fix(sidecar_init): log after spawn in start_all to close SIGTERM race

`start_all()` was logging "starting {name}" before appending the
process to `self.procs`, so a SIGTERM arriving between the log write
and the append would call `request_shutdown()` with the new daemon
absent from `self.procs` and therefore never forwarded SIGTERM.
Moving the log after the append eliminates the window.

Signal handlers are also moved before `sup.start_all()` in `main()` so
they are registered before any child is spawned; previously there was a
window where SIGTERM used the default handler (silent process death) if
it arrived between `start_all()` returning and `signal.signal()`.

`TestMainEndToEnd._run` is updated to use a reader thread and a
`wait_for_output` synchronisation barrier instead of a fixed sleep, so
`test_sigterm_clean_shutdown` does not race against slow CI startup time.

.gitea/workflows/test.yml

@@ -71,15 +71,11 @@ jobs:
       - name: Run integration tests
         run: python3 -m unittest discover -t . -s tests/integration -v
 
-  # Combined unit+integration coverage report (informational). See
-  # docs/decisions/0004-coverage-policy.md.
-  #
-  # The hard diff-coverage gate (changed lines >= 90%) is DEFERRED: the
-  # Firecracker backend's VM/SSH orchestration is covered by the integration
-  # suite, which needs /dev/kvm + the provisioned TAP/nft pool — a
-  # container-based runner skips it and those lines read uncovered, so the
-  # gate can't pass here. Re-enabling it on a self-hosted KVM runner is
-  # tracked separately (see PRD 0069 / #348 and the ci-runner branch).
+  # Combined unit+integration coverage + the diff-coverage gate.
+  # See docs/decisions/0004-coverage-policy.md. The hard gate is diff
+  # coverage (new/changed lines >= 90%); the combined + critical reports
+  # are informational and degrade gracefully when the runner has no
+  # Docker (integration tests skip, those modules just read lower).
   coverage:
     runs-on: ubuntu-latest
     steps:
@@ -96,5 +92,10 @@ jobs:
       - name: Install dev requirements
         run: python3 -m pip install -r requirements-dev.txt
 
-      - name: Combined coverage report (unit + integration)
+      - name: Combined coverage (unit + integration)
         run: PYTHON=python3 bash scripts/coverage.sh critical
+
+      - name: Diff-coverage gate (changed lines >= 90%)
+        run: |
+          git fetch --no-tags origin main:refs/remotes/origin/main
+          python3 scripts/diff_coverage.py --base origin/main --min 90

AGENTS.md

@@ -9,11 +9,11 @@ host. A Python CLI (entry point `cli.py`, package `bot_bottle/`) orchestrates
 the runtime lifecycle and the copying of skills and env vars into it.
 The default backend on compatible macOS hosts is macos-container:
 agents and sidecar bundles run through Apple's `container` CLI without
-requiring Docker. On KVM-capable Linux hosts the default is firecracker:
-agents run in a Firecracker microVM reached over SSH on a point-to-point
-TAP, while the sidecar bundle still uses Docker. The legacy Docker
-backend remains available with `BOT_BOTTLE_BACKEND=docker` or
-`--backend=docker`.
+requiring Docker. The smolmachines backend remains available with
+`BOT_BOTTLE_BACKEND=smolmachines` or `--backend=smolmachines`; agents
+run in a libkrun micro-VM, while the sidecar bundle still uses Docker.
+The legacy Docker backend remains available with `BOT_BOTTLE_BACKEND=docker`
+or `--backend=docker`.
 
 ## Goals
 

Dockerfile.sidecars

@@ -24,7 +24,7 @@
 # Exposed ports inside the container:
 #   9099  egress (mitmproxy, agent-facing HTTPS proxy)
 #   9418  git-gate (git-daemon)
-#   9420  git-gate smart HTTP (VM-backend agent-facing transport)
+#   9420  git-gate smart HTTP (smolmachines agent-facing transport)
 #   9100  supervise (MCP HTTP)
 
 # Stage 1: gitleaks binary. The upstream gitleaks image is alpine
@@ -64,10 +64,8 @@ COPY --from=gitleaks-src /usr/bin/gitleaks /usr/bin/gitleaks
 COPY bot_bottle/egress_addon_core.py /app/egress_addon_core.py
 COPY bot_bottle/egress_dlp_config.py /app/egress_dlp_config.py
 COPY bot_bottle/egress_addon.py      /app/egress_addon.py
-COPY bot_bottle/policy_resolver.py   /app/policy_resolver.py
 COPY bot_bottle/dlp_detectors.py     /app/dlp_detectors.py
 COPY bot_bottle/yaml_subset.py       /app/yaml_subset.py
-COPY bot_bottle/paths.py             /app/paths.py
 COPY bot_bottle/migrations.py        /app/migrations.py
 COPY bot_bottle/db_store.py          /app/db_store.py
 COPY bot_bottle/supervise_types.py   /app/supervise_types.py

README.md

@@ -5,7 +5,7 @@
 # bot-bottle
 
 [![test](https://gitea.dideric.is/didericis/bot-bottle/actions/workflows/test.yml/badge.svg?branch=main)](https://gitea.dideric.is/didericis/bot-bottle/actions?workflow=test.yml)
-[![coverage](https://img.shields.io/badge/coverage-82%25-brightgreen)](https://coverage.readthedocs.io/)
+[![coverage](https://img.shields.io/badge/coverage-84%25-brightgreen)](https://coverage.readthedocs.io/)
 [![core coverage](https://img.shields.io/badge/core%20coverage-95%25-brightgreen)](https://gitea.dideric.is/didericis/bot-bottle/src/branch/main/docs/decisions/0004-coverage-policy.md)
 
 **Problem:** Developer wants to run a coding agent without supervision, but they don't want a prompt injected or misbehaving agent wrecking their environment or exfiltrating sensitive data.
@@ -25,14 +25,14 @@
 - **Provider templates (Claude, Codex)** — `Dockerfile.claude` / `Dockerfile.codex`, or a bottle-supplied Dockerfile. Claude auth via long-lived OAuth token; Codex via opt-in host device-auth forwarding.
 - **gVisor auto-detect** — on Linux hosts where `runsc` is registered with Docker, every bottle launches under it for a userspace syscall barrier; no manifest config required.
 - **Apple Container backend (macOS default when available)** — runs the agent and sidecar bundle with Apple's `container` CLI, using a host-only agent network plus a separate sidecar egress network.
-- **Firecracker backend (Linux default when available)** — runs the agent in a KVM Firecracker microVM reached over SSH on a point-to-point TAP, with the sidecar bundle in Docker. A dedicated, fail-closed `nftables` table isolates the guest, closing the raw DNS/IP exfiltration gap that exists in the legacy Docker backend. Requires KVM (`/dev/kvm`) and a one-time privileged network-pool setup.
-- **Legacy Docker backend** — still available for examples, CI, and hosts without Apple Container or KVM via `BOT_BOTTLE_BACKEND=docker` or `--backend=docker`.
+- **Smolmachines backend** — runs the agent in a libkrun micro-VM while the sidecar bundle stays in Docker. TSI and smolmachines DNS filtering close the raw DNS exfiltration gap that exists in the legacy Docker backend. Runs on macOS (Hypervisor.framework) and Linux (KVM, `/dev/kvm`).
+- **Legacy Docker backend** — still available for examples, CI, and hosts without Apple Container via `BOT_BOTTLE_BACKEND=docker` or `--backend=docker`.
 
 ## Architecture
 
 On the default macOS Apple Container backend, a bottle is an agent container on a host-only internal network plus a sidecar bundle attached to both that internal network and a NAT egress network. The agent gets HTTP(S)_PROXY and CA bundle env vars pointing at the sidecar's internal-network IP, so HTTP/HTTPS traffic flows through the sidecar instead of direct egress. `bottle.git` / git-gate is intentionally deferred on this backend until a safe Apple Container key-delivery path exists.
 
-On the Firecracker backend, a bottle is an agent microVM plus a Docker sidecar bundle for egress, git-gate, and supervise. The VM reaches the sidecars over a per-bottle point-to-point TAP link; a dedicated fail-closed `nftables` table (`inet bot_bottle_fc`) confines the guest to that link, so nothing leaves the box except through the sidecars. The TAP pool and nft table are provisioned once (root); per-launch needs no privilege.
+On the smolmachines backend, a bottle is an agent micro-VM plus a Docker sidecar bundle for egress, git-gate, and supervise. The VM reaches the sidecars through a per-bottle loopback alias allowed by TSI; smolmachines handles DNS filtering below the guest OS.
 
 On the legacy Docker backend, the same logical bottle is two containers per agent: an `agent` container and a `sidecars` container. They share a per-agent Docker `--internal` network; the agent has no default route off-box.
 
@@ -71,24 +71,25 @@ When the agent exits, `cli.py` tears down every sidecar and both networks; nothi
 
 ## Quickstart
 
-On compatible macOS hosts, the default backend requires Apple's `container` CLI and does not require Docker. The Firecracker backend (Linux) requires Docker on the host for the sidecar bundle plus the `firecracker` binary and KVM. The legacy Docker backend requires Docker. Claude bottles also need a long-lived Claude Code OAuth token (`claude setup-token`) exported as `BOT_BOTTLE_CLAUDE_OAUTH_TOKEN`.
+On compatible macOS hosts, the default backend requires Apple's `container` CLI and does not require Docker. The smolmachines backend requires Docker on the host for the sidecar bundle plus `smolvm` (macOS or Linux). The legacy Docker backend requires Docker. Claude bottles also need a long-lived Claude Code OAuth token (`claude setup-token`) exported as `BOT_BOTTLE_CLAUDE_OAUTH_TOKEN`.
 
-Use `BOT_BOTTLE_BACKEND=docker ./cli.py start <agent>` on hosts where neither Apple Container nor KVM is available and Docker is the desired backend.
+Use `BOT_BOTTLE_BACKEND=docker ./cli.py start <agent>` on hosts where Apple Container is not installed and Docker is the desired backend.
 
-### Firecracker on Linux
+### smolmachines on Linux
 
-On Linux, a KVM-capable host defaults to the Firecracker backend. It needs:
+The smolmachines backend runs on Linux as well as macOS. On Linux, `smolvm`/libkrun use KVM, so the host needs:
 
 - **`/dev/kvm`** present and accessible. Load `kvm-intel` or `kvm-amd` (and enable virtualization in BIOS/firmware). The invoking user must be in the `kvm` group: `sudo usermod -aG kvm "$USER"` then re-login. bot-bottle preflights this and reports exactly what's missing.
-- **`firecracker`** on `PATH`: grab a release from <https://github.com/firecracker-microvm/firecracker/releases>. Start flows print this pointer when the binary is missing.
-- **Docker** for the sidecar bundle and image build.
-- **A one-time privileged network setup** — the per-bottle TAP pool plus the fail-closed `nftables` isolation table. Run `./cli.py backend setup --backend=firecracker` for the host-appropriate config (a NixOS module, a `sudo` script elsewhere); `./cli.py backend status --backend=firecracker` reports what's present, including whether the pool range collides with an existing route. The pool defaults to `10.243.0.0/16` (an obscure RFC-1918 block that dodges docker/libvirt/LAN and, deliberately, Tailscale's `100.64.0.0/10` CGNAT range); override with `BOT_BOTTLE_FC_IP_BASE` if it clashes on your host.
+- **`smolvm`** on `PATH`: `curl -sSL https://smolmachines.com/install.sh | sh`.
+- **Docker** for the sidecar bundle and image build, same as macOS.
+
+Per-bottle isolation works the same as macOS without any `ifconfig`/sudo step — all of `127.0.0.0/8` is already loopback on Linux, so each bottle's sidecar bundle is published on its own `127.0.0.<N>` and TSI's allowlist is scoped to that `/32`.
 
 ```sh
-BOT_BOTTLE_BACKEND=firecracker ./cli.py start <agent>
+BOT_BOTTLE_BACKEND=smolmachines ./cli.py start <agent>
 ```
 
-> **NixOS:** enable `virtualisation.docker`, ensure the KVM module is loaded (`boot.kernelModules = [ "kvm-intel" ];` or `kvm-amd`), and add your user to the `kvm` and `docker` groups. For the network pool, consume the flake module — `imports = [ inputs.bot-bottle.nixosModules.firecracker-netpool ]; services.bot-bottle-firecracker = { enable = true; owner = "you"; };` — then `nixos-rebuild switch` (imperative nft/TAP rules don't survive a rebuild; channel users can `imports = [ <bot-bottle>/nix/firecracker-netpool.nix ]`). `firecracker` isn't in nixpkgs by default as a user binary — install the release binary (pin the version) and put it on `PATH`.
+> **NixOS:** enable `virtualisation.docker`, ensure the KVM module is loaded (`boot.kernelModules = [ "kvm-intel" ];` or `kvm-amd`), and add your user to the `kvm` and `docker` groups. If you run bottles from a Gitea Actions runner, use a `host`-label runner so Docker, `smolvm`, and `/dev/kvm` are all reachable from the job. `smolvm` isn't in nixpkgs — install the release binary (pin the version) and put it on the runner's `PATH`.
 
 ```sh
 ./cli.py start <agent>   # builds the image on first run, drops you into claude

bot_bottle/__init__.py

@@ -1 +1,11 @@
 """bot-bottle: Python implementation of the agent container launcher."""
+
+from .bottle import BottleError, destroy, freeze, resume_headless, start_headless
+
+__all__ = [
+    "BottleError",
+    "destroy",
+    "freeze",
+    "resume_headless",
+    "start_headless",
+]

bot_bottle/agent_provider.py

@@ -227,9 +227,9 @@ class AgentProvider(ABC):
         from .backend.util import AGENT_CA_PATH, log_ca_fingerprint, select_ca_cert
         from .log import die
         cert_host_path, label = select_ca_cert(plan.egress_plan)
-        # Ensure the target directory exists. A backend's rootfs build
-        # may not preserve the empty /usr/local/share/ca-certificates/
-        # directory; mkdir -p is idempotent and safe for all backends.
+        # Ensure the target directory exists. smolvm's pack step may not
+        # preserve the empty /usr/local/share/ca-certificates/ directory
+        # on Linux; mkdir -p is idempotent and safe for all backends.
         bottle.exec("mkdir -p /usr/local/share/ca-certificates", user="root")
         bottle.cp_in(str(cert_host_path), AGENT_CA_PATH)
         r = bottle.exec(

bot_bottle/api.py

@@ -0,0 +1,14 @@
+"""Compatibility wrapper for the public bottle runner API.
+
+The implementation lives in :mod:`bot_bottle.bottle.runner`.
+"""
+
+from .bottle.runner import BottleError, destroy, freeze, resume_headless, start_headless
+
+__all__ = [
+    "BottleError",
+    "destroy",
+    "freeze",
+    "resume_headless",
+    "start_headless",
+]

bot_bottle/audit_store.py

@@ -6,13 +6,11 @@ import sqlite3
 from pathlib import Path
 
 try:
-    from .supervise_types import AuditEntry
-    from .paths import host_db_path
+    from .supervise_types import AuditEntry, host_db_path
     from .db_store import DbStore
     from .migrations import TableMigrations
 except ImportError:
-    from supervise_types import AuditEntry  # type: ignore[import-not-found]  # pylint: disable=import-error,no-name-in-module
-    from paths import host_db_path  # type: ignore[import-not-found]  # pylint: disable=import-error,no-name-in-module
+    from supervise_types import AuditEntry, host_db_path  # type: ignore[import-not-found]  # pylint: disable=import-error,no-name-in-module
     from db_store import DbStore  # type: ignore[import-not-found]  # pylint: disable=import-error,no-name-in-module
     from migrations import TableMigrations  # type: ignore[import-not-found]  # pylint: disable=import-error,no-name-in-module
 

bot_bottle/backend/__init__.py

@@ -26,9 +26,8 @@ backend exposes five methods:
 
 Selection is driven by `--backend` on `start` or BOT_BOTTLE_BACKEND
 (env var). When neither is set, compatible macOS hosts default to
-`macos-container`; Linux hosts with KVM default to `firecracker`;
-otherwise `docker`. Per PRD 0003 the manifest does not carry a
-backend field; the host picks.
+`macos-container`; other hosts default to `smolmachines`. Per PRD 0003
+the manifest does not carry a backend field; the host picks.
 """
 
 from __future__ import annotations
@@ -38,7 +37,7 @@ import shlex
 import sys
 from abc import ABC, abstractmethod
 from contextlib import AbstractContextManager
-from dataclasses import dataclass
+from dataclasses import dataclass, field
 from pathlib import Path
 from typing import Any, Generic, Sequence, TypeVar
 
@@ -79,6 +78,11 @@ class BottleSpec:
     # True when launched via --headless (no TTY, no interactive prompts).
     # The git-gate host-key preflight uses this to error rather than prompt.
     headless: bool = False
+    # Forge sidecar env vars (PRD forge-native-integration, chunk 1).
+    # Passed by the orchestrator at launch time; the forge sidecar reads
+    # them to connect to Gitea. Empty for non-forge runs. The agent
+    # process itself does not receive these.
+    forge_env: dict[str, str] = field(default_factory=dict)
 
 
 @dataclass(frozen=True)
@@ -98,14 +102,14 @@ class BottlePlan(ABC):
     @property
     def git_gate_insteadof_host(self) -> str:
         """Host (and optional port) used in git-gate insteadOf URLs.
-        Docker uses the compose-network DNS alias; VM backends may
-        override with an IP:port when the guest has no DNS."""
+        Docker uses the compose-network DNS alias; smolmachines
+        overrides with a loopback IP:port since TSI has no DNS."""
         return "git-gate"
 
     @property
     def git_gate_insteadof_scheme(self) -> str:
         """URL scheme for git-gate insteadOf rewrites. 'git' for
-        Docker (git daemon); VM backends may override (e.g. 'http'
+        Docker (git daemon); 'http' for smolmachines (HTTP proxy
         over a published host port)."""
         return "git"
     egress_plan: EgressPlan
@@ -183,8 +187,8 @@ class BottleCleanupPlan(ABC):
 class ExecResult:
     """Captured result of `Bottle.exec`. Backend-neutral: the Docker
     impl populates it from a `subprocess.CompletedProcess`, but a
-    VM backend could populate it from any source that produces a
-    returncode + captured streams."""
+    future fly/smolmachines backend could populate it from any source
+    that produces a returncode + captured streams."""
 
     returncode: int
     stdout: str
@@ -202,7 +206,7 @@ class ActiveAgent:
     of sidecar daemons currently up for this bottle (`egress`,
     `git-gate`, `supervise`); the dashboard uses it to
     gate edit verbs. `backend_name` is the matching key in
-    `_BACKENDS` (`docker` / `firecracker` / `macos-container`) — used by the active-
+    `_BACKENDS` (`docker` / `smolmachines` / `macos-container`) — used by the active-
     list rendering to disambiguate and by the dashboard's
     re-attach path."""
 
@@ -507,7 +511,7 @@ class BottleBackend(ABC, Generic[PlanT, CleanupT]):
         MCP entry inside the guest.
 
         Default returns "" so backends without supervise support
-        don't have to implement it. Docker and firecracker override."""
+        don't have to implement it. Docker and smolmachines override."""
         del plan
         return ""
 
@@ -524,60 +528,27 @@ class BottleBackend(ABC, Generic[PlanT, CleanupT]):
     def enumerate_active(self) -> Sequence[ActiveAgent]:
         """Return every currently-running agent on this backend.
         Empty when none. Backend-specific: docker queries `docker
-        compose ls`; firecracker cross-references its running sidecar
-        containers against per-bottle metadata."""
+        compose ls`; smolmachines queries `smolvm machine ls --json`
+        + cross-references its bundle container."""
 
     @classmethod
     @abstractmethod
     def is_available(cls) -> bool:
         """Whether this backend's runtime prerequisites are satisfied
-        on the current host. Docker → `docker` on PATH; firecracker →
-        Linux + KVM. Used by the cross-backend
+        on the current host. Docker → `docker` on PATH; smolmachines
+        → `smolvm` on PATH. Used by the cross-backend
         `enumerate_active_agents` / `cmd_cleanup` to skip backends
         the operator hasn't installed, so a docker-only host
         doesn't fail when `cli.py list active` walks past
-        firecracker."""
-
-    @classmethod
-    @abstractmethod
-    def setup(cls) -> int:
-        """Emit this backend's one-time host setup — privileged network
-        pool, daemon bring-up, install pointers, etc. — as
-        host-appropriate config or commands. Prints to stdout/stderr and
-        returns a shell exit code (0 = nothing to report / success). A
-        backend that needs no host setup prints a short note and returns
-        0. Invoked generically by `./cli.py backend setup [--backend=…]`
-        so operators can provision any backend without a
-        backend-specific command. Classmethod (like `is_available`) —
-        it's a host query, not per-bottle state."""
-
-    @classmethod
-    @abstractmethod
-    def status(cls) -> int:
-        """Report whether this backend's prerequisites are satisfied on
-        the host — binaries, daemon reachability, network pool, range
-        conflicts, etc. Prints a human-readable summary; returns 0 when
-        the backend is ready to launch and non-zero when something is
-        missing. Invoked by `./cli.py backend status [--backend=…]`."""
-
-    @classmethod
-    @abstractmethod
-    def teardown(cls) -> int:
-        """Undo `setup()` — the inverse operation, surfaced as
-        `./cli.py backend teardown [--backend=…]` (uninstall). Symmetric
-        with setup: where setup is advisory (prints the privileged
-        commands / declarative config to apply), teardown prints the
-        commands / config change to remove the host prerequisites. A
-        backend with no host setup prints a short note and returns 0.
-        Not called by the launch path or the test suite."""
+        smolmachines."""
 
 
 # Import concrete backend classes AFTER the base types are defined, so
 # each backend module can pull BottleSpec / BottlePlan / BottleBackend
 # via `from . import ...` without hitting a partially-initialized module.
 from .docker import DockerBottleBackend  # noqa: E402  # pylint: disable=wrong-import-position
-from .firecracker import FirecrackerBottleBackend  # noqa: E402  # pylint: disable=wrong-import-position
 from .macos_container import MacosContainerBottleBackend  # noqa: E402  # pylint: disable=wrong-import-position
+from .smolmachines import SmolmachinesBottleBackend  # noqa: E402  # pylint: disable=wrong-import-position
 
 # Freezer is imported after the backend classes for the same reason:
 # Freezer.commit_slug constructs ActiveAgent, which must be fully
@@ -591,8 +562,8 @@ from .freeze import CommitCancelled, Freezer, get_freezer  # noqa: E402  # pylin
 # unparameterized methods (prepare → plan → launch(plan), cleanup, etc.).
 _BACKENDS: dict[str, BottleBackend[Any, Any]] = {
     "docker": DockerBottleBackend(),
-    "firecracker": FirecrackerBottleBackend(),
     "macos-container": MacosContainerBottleBackend(),
+    "smolmachines": SmolmachinesBottleBackend(),
 }
 
 
@@ -605,8 +576,7 @@ def get_bottle_backend(
       1. explicit arg (CLI `--backend=<name>` passes through here)
       2. BOT_BOTTLE_BACKEND env var
       3. `macos-container` on compatible macOS hosts
-      4. `firecracker` on KVM-capable Linux hosts
-      5. default `docker`
+      4. default `smolmachines`
 
     Dies with a pointer at the known backends if the chosen name
     isn't implemented."""
@@ -620,13 +590,7 @@ def get_bottle_backend(
 def _default_backend_name() -> str:
     if has_backend("macos-container"):
         return "macos-container"
-    # A KVM-capable Linux host defaults to firecracker even when the
-    # `firecracker` binary isn't installed yet: selecting it here routes
-    # start through firecracker's preflight, which prints an install
-    # pointer, instead of silently falling back to docker.
-    if FirecrackerBottleBackend.is_host_capable():
-        return "firecracker"
-    return "docker"
+    return "smolmachines"
 
 
 def known_backend_names() -> tuple[str, ...]:
@@ -640,7 +604,7 @@ def has_backend(name: str) -> bool:
     """Whether the named backend's runtime prerequisites are
     available on the current host. Cross-backend callers (list,
     cleanup) skip unavailable backends so a docker-only host
-    doesn't fail when the firecracker backend isn't usable,
+    doesn't fail when the smolmachines backend isn't installed,
     and vice versa.
 
     Returns False for unknown names so callers can pass

bot_bottle/backend/docker/backend.py

@@ -54,21 +54,6 @@ class DockerBottleBackend(BottleBackend["DockerBottlePlan", "DockerBottleCleanup
         launch."""
         return shutil.which("docker") is not None
 
-    @classmethod
-    def setup(cls) -> int:
-        from . import setup as _setup
-        return _setup.setup()
-
-    @classmethod
-    def status(cls) -> int:
-        from . import setup as _setup
-        return _setup.status()
-
-    @classmethod
-    def teardown(cls) -> int:
-        from . import setup as _setup
-        return _setup.teardown()
-
     def _preflight(self) -> None:
         _resolve_plan.preflight()
 

bot_bottle/backend/docker/cleanup.py

@@ -18,7 +18,8 @@ scan, just as a fallback bucket alongside the project list.
 
 `cleanup` removes everything in the plan.
 
-Active-agent enumeration lives in `backend/docker/enumerate.py`.
+Active-agent enumeration lives in `backend/docker/enumerate.py`
+(mirror of `backend/smolmachines/enumerate.py`).
 """
 
 from __future__ import annotations
@@ -26,11 +27,11 @@ from __future__ import annotations
 import shutil
 import subprocess
 
-from ...paths import bot_bottle_root
+from ... import supervise as _supervise
 from ...log import info, warn
 from . import util as docker_mod
 from .bottle_cleanup_plan import DockerBottleCleanupPlan
-from ...bottle_state import bottle_state_dir, is_preserved
+from ...bottle.state import bottle_state_dir, is_preserved
 from .compose import COMPOSE_PROJECT_PREFIX, list_compose_projects
 
 
@@ -92,9 +93,9 @@ def _list_orphan_state_dirs(
 
     `protected_identities` is the set of slugs that are live in
     ANY backend — used so this docker-side check doesn't reap a
-    running non-docker bottle's state dir (the layout is shared
-    across backends)."""
-    state_root = bot_bottle_root() / "state"
+    running smolmachines bottle's state dir (the layout is shared
+    across both backends)."""
+    state_root = _supervise.bot_bottle_root() / "state"
     if not state_root.is_dir():
         return []
     orphans: list[str] = []
@@ -118,7 +119,7 @@ def prepare_cleanup() -> DockerBottleCleanupPlan:
 
     Pulls the union of live identities across backends via
     `enumerate_active_agents()` so the orphan-state-dir bucket
-    doesn't include slugs whose non-docker bottle is still up."""
+    doesn't include slugs whose smolmachines VM is still up."""
     docker_mod.require_docker()
     projects = list_compose_projects()
     project_set = set(projects)

bot_bottle/backend/docker/enumerate.py

@@ -1,6 +1,7 @@
 """Active-agent enumeration for the docker backend.
 
-Returns `ActiveAgent` records the CLI `list active` command and the
+Mirrors `backend/smolmachines/enumerate.py`: returns
+`ActiveAgent` records the CLI `list active` command and the
 dashboard agents pane consume. Empty when docker isn't reachable
 — gated by `has_backend('docker')` at the cross-backend caller
 so this module trusts that docker is available when called.
@@ -14,7 +15,7 @@ from __future__ import annotations
 import subprocess
 
 from .. import ActiveAgent
-from ...bottle_state import read_metadata
+from ...bottle.state import read_metadata
 from .compose import compose_project_name, list_active_slugs
 
 

bot_bottle/backend/docker/launch.py

@@ -46,7 +46,7 @@ from . import network as network_mod
 from . import util as docker_mod
 from .bottle import DockerBottle
 from .bottle_plan import DockerBottlePlan
-from ...bottle_state import (
+from ...bottle.state import (
     bottle_state_dir,
     egress_state_dir,
     git_gate_state_dir,

bot_bottle/backend/docker/setup.py

@@ -1,89 +0,0 @@
-"""Host setup + status for the Docker backend.
-
-Unlike Firecracker, the Docker backend needs no privileged one-time
-host provisioning (no TAP pool / nft table) — networks and the sidecar
-bundle are created per-launch. So `setup()` is mostly an install/daemon
-pointer, and `status()` reports whether docker is usable.
-
-This is intentionally minimal; a richer version (daemon config checks,
-gVisor/runsc install guidance, rootless-docker hints) is tracked
-separately. Reached via `DockerBottleBackend.setup` / `.status`, which
-the generic `./cli.py backend {setup,status}` dispatches to.
-"""
-
-from __future__ import annotations
-
-import shutil
-import subprocess
-import sys
-
-from . import util as _util
-
-
-def _docker_on_path() -> bool:
-    return shutil.which("docker") is not None
-
-
-def _daemon_reachable() -> bool:
-    if not _docker_on_path():
-        return False
-    return subprocess.run(
-        ["docker", "info"],
-        stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, check=False,
-    ).returncode == 0
-
-
-def _print_install_pointer() -> None:
-    sys.stderr.write("Docker is required but was not found on PATH.\n")
-    sys.stderr.write("  macOS: Docker Desktop  https://docs.docker.com/desktop/install/mac-install/\n")
-    sys.stderr.write("  Linux: Docker Engine   https://docs.docker.com/engine/install/\n")
-
-
-def setup() -> int:
-    if not _docker_on_path():
-        _print_install_pointer()
-        return 1
-    sys.stderr.write(
-        "Docker backend: no privileged host setup required — networks and "
-        "the sidecar bundle are created per-launch.\n"
-    )
-    if not _daemon_reachable():
-        sys.stderr.write(
-            "The Docker daemon isn't reachable; start it (e.g. Docker "
-            "Desktop, or `systemctl start docker`).\n"
-        )
-        return 1
-    if not _util.runsc_available():
-        sys.stderr.write(
-            "Optional: register the gVisor (`runsc`) runtime with Docker for "
-            "a userspace syscall barrier; bottles auto-detect and use it.\n"
-        )
-    return 0
-
-
-def teardown() -> int:
-    sys.stderr.write(
-        "Docker backend: nothing to undo — it provisions no privileged host "
-        "state (networks and the sidecar bundle are per-launch and are "
-        "removed by `./cli.py cleanup`). Docker itself is left installed.\n"
-    )
-    return 0
-
-
-def status() -> int:
-    ok = True
-    if _docker_on_path():
-        sys.stderr.write("docker on PATH: yes\n")
-    else:
-        sys.stderr.write("docker on PATH: NO\n")
-        ok = False
-    if ok and _daemon_reachable():
-        sys.stderr.write("docker daemon: reachable\n")
-    elif ok:
-        sys.stderr.write("docker daemon: UNREACHABLE\n")
-        ok = False
-    runsc = _docker_on_path() and _util.runsc_available()
-    sys.stderr.write(f"gVisor runsc runtime: {'registered' if runsc else 'not registered (optional)'}\n")
-    if not ok:
-        sys.stderr.write("\nRun: ./cli.py backend setup --backend=docker\n")
-    return 0 if ok else 1

bot_bottle/backend/docker/util.py

@@ -167,6 +167,36 @@ def commit_container(container_name: str, image_tag: str) -> None:
     info(f"committed {container_name!r} → {image_tag!r}")
 
 
+def image_id(ref: str) -> str:
+    """Return the content-addressed image ID (e.g.
+    `sha256:abcd...`) for `ref`. The smolmachines backend keys its
+    `.smolmachine` artifact cache on this, so a Dockerfile change
+    that produces a new image automatically invalidates the cache."""
+    r = subprocess.run(
+        ["docker", "image", "inspect", "--format", "{{.Id}}", ref],
+        capture_output=True,
+        text=True,
+        check=False,
+    )
+    if r.returncode != 0:
+        die(
+            f"docker image inspect for {ref!r} failed: "
+            f"{(r.stderr or '').strip() or '<no stderr>'}"
+        )
+    return r.stdout.strip()
+
+
+def save(ref: str, output: str) -> None:
+    """`docker save REF -o OUTPUT`. Writes a tarball of the image
+    layers + manifest to the host path. Used by smolmachines
+    prepare to hand the agent image to a containerized crane that
+    pushes it to the ephemeral registry — bypassing the docker
+    daemon's `docker push` (which on Docker Desktop can't reach a
+    host-loopback registry and refuses plain-HTTP pushes to
+    non-loopback hosts)."""
+    subprocess.run(["docker", "save", ref, "-o", output], check=True)
+
+
 def _silent_run(cmd: Iterable[str]) -> int:
     return subprocess.run(
         list(cmd),

bot_bottle/backend/egress_apply.py

@@ -9,7 +9,7 @@ from __future__ import annotations
 from abc import ABC, abstractmethod
 from pathlib import Path
 
-from ..bottle_state import egress_state_dir
+from ..bottle.state import egress_state_dir
 from ..egress import EGRESS_ROUTES_FILENAME
 from ..egress_addon_core import LOG_OFF, load_config
 

bot_bottle/backend/firecracker/__init__.py

@@ -1,7 +0,0 @@
-"""Firecracker backend: Linux KVM microVM isolation (issue #342)."""
-
-from __future__ import annotations
-
-from .backend import FirecrackerBottleBackend
-
-__all__ = ["FirecrackerBottleBackend"]

bot_bottle/backend/firecracker/bottle.py

@@ -1,189 +0,0 @@
-"""Bottle handle for a Firecracker microVM, over SSH.
-
-Every operation routes through SSH to the guest (dropbear, listening on
-the TAP link). `exec` pipes a script over stdin and captures output;
-`cp_in` uses scp; `exec_agent` uses `ssh -t` for an interactive PTY
-session. `ssh -t` forwards the host terminal's SIGWINCH to the remote
-PTY natively, so no separate resize bridge is needed.
-
-Commands run as the image's `node` user via `runuser`, with HOME/USER/
-PATH and the bottle env (HTTPS_PROXY at the sidecar, CA paths, …) set
-per-invocation through `env` (the VM itself just runs the init; it has
-no baked-in process env like a `docker run` container would).
-"""
-
-from __future__ import annotations
-
-import os
-import shlex
-import subprocess
-import sys
-from pathlib import Path
-from typing import Mapping, cast
-
-from ...agent_provider import PromptMode, prompt_args
-from .. import Bottle, ExecResult
-from ..terminal import exec_shell_script
-from . import util
-
-
-_HOME_FOR = {"node": "/home/node", "root": "/root"}
-_DEFAULT_PATH_FOR = {
-    "node": (
-        "/home/node/.local/bin:"
-        "/home/node/.codex/packages/standalone/current/bin:"
-        "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
-    ),
-    "root": "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
-}
-
-
-def _env_assignments_for(user: str, env: Mapping[str, str]) -> list[str]:
-    home = _HOME_FOR.get(user, f"/home/{user}")
-    out = [f"HOME={home}", f"USER={user}"]
-    if "PATH" not in env:
-        out.append(f"PATH={_DEFAULT_PATH_FOR.get(user, _DEFAULT_PATH_FOR['root'])}")
-    for k, v in env.items():
-        out.append(f"{k}={v}")
-    return out
-
-
-class FirecrackerBottle(Bottle):
-    def __init__(
-        self,
-        name: str,
-        *,
-        private_key: Path,
-        guest_ip: str,
-        guest_env: Mapping[str, str] | None = None,
-        prompt_path_in_guest: str | None = None,
-        agent_command: str = "claude",
-        agent_prompt_mode: PromptMode = "append_file",
-        agent_provider_template: str = "claude",
-        terminal_title: str = "",
-        terminal_color: str = "",
-        agent_workdir: str = "/home/node",
-    ) -> None:
-        self.name = name
-        self._private_key = private_key
-        self._guest_ip = guest_ip
-        self._guest_env = dict(guest_env or {})
-        self.prompt_path = prompt_path_in_guest
-        self._agent_prompt_mode = agent_prompt_mode
-        self.agent_command = agent_command
-        self.terminal_title = terminal_title
-        self.terminal_color = terminal_color
-        self.agent_provider_template = agent_provider_template
-        self.agent_workdir = agent_workdir
-
-    def _ssh(self, *, tty: bool) -> list[str]:
-        argv = util.ssh_base_argv(self._private_key, self._guest_ip)
-        if tty:
-            # -t: allocate a remote PTY and forward window-size changes.
-            argv.insert(1, "-t")
-        return argv
-
-    def _agent_remote_argv(self, argv: list[str]) -> list[str]:
-        """The `runuser … <agent> …` command run inside the guest."""
-        full_argv = list(argv)
-        full_argv.extend(
-            prompt_args(
-                cast(PromptMode, self._agent_prompt_mode),
-                self.prompt_path,
-                argv=full_argv,
-            )
-        )
-        # ALWAYS cd into the workdir before exec'ing the agent. The
-        # control SSH logs in as root, so the inherited cwd is /root —
-        # which the agent (running as node) can't even read now that
-        # /root is root-owned. Run the agent from the node workdir
-        # (default /home/node) so its cwd is node-accessible; otherwise
-        # Node's process.cwd(), the shell-snapshot machinery, and
-        # `/doctor` all fail on the unreadable /root.
-        # Run the agent from the node workdir (default /home/node), NOT
-        # the /root cwd inherited from the root SSH login — /root is now
-        # root-owned and unreadable by node, which breaks Node's
-        # process.cwd(), the shell-snapshot machinery, and `/doctor`.
-        # Use `env --chdir` rather than a `sh -c 'cd … && exec "$@"'`
-        # wrapper: ssh space-joins everything after the host into one
-        # string for the guest shell, so a quoted script + $@ would be
-        # re-split and mangled (exec'ing the $0 placeholder). All-simple
-        # words survive that join.
-        workdir = self.agent_workdir or _HOME_FOR["node"]
-        remote = ["runuser", "-u", "node", "--",
-                  "env", f"--chdir={workdir}",
-                  *_env_assignments_for("node", self._guest_env),
-                  self.agent_command, *full_argv]
-        return remote
-
-    def agent_argv(self, argv: list[str], *, tty: bool = True) -> list[str]:
-        return [*self._ssh(tty=tty), "--", *self._agent_remote_argv(argv)]
-
-    def exec_agent(self, argv: list[str], *, tty: bool = True) -> int:
-        agent_argv = self.agent_argv(argv, tty=tty)
-        script = (
-            exec_shell_script(agent_argv, self.terminal_title, self.terminal_color)
-            if tty else None
-        )
-        if script is None:
-            return subprocess.run(agent_argv, check=False).returncode
-        return subprocess.run(["sh", "-lc", script], check=False).returncode
-
-    def exec(self, script: str, *, user: str = "node") -> ExecResult:
-        # Pipe the script over stdin (`sh -s`) so nothing needs shell
-        # quoting through the SSH command line.
-        remote = ["runuser", "-u", user, "--",
-                  "env", *_env_assignments_for(user, self._guest_env),
-                  "/bin/sh", "-s"]
-        result = subprocess.run(
-            [*self._ssh(tty=False), "--", *remote],
-            input=script, capture_output=True, text=True, check=False,
-        )
-        return ExecResult(
-            returncode=result.returncode,
-            stdout=result.stdout,
-            stderr=result.stderr,
-        )
-
-    def cp_in(self, host_path: str, container_path: str) -> None:
-        # Stream a tar over the SSH exec channel rather than scp: the
-        # guest runs dropbear, which ships no sftp-server/scp, but every
-        # agent image has `tar`. Copy so `container_path` becomes a copy
-        # of `host_path` (docker cp semantics — callers rm -rf the
-        # destination first).
-        host_parent = os.path.dirname(host_path.rstrip("/")) or "/"
-        host_base = os.path.basename(host_path.rstrip("/"))
-        guest_parent = os.path.dirname(container_path.rstrip("/")) or "/"
-        guest_base = os.path.basename(container_path.rstrip("/"))
-        remote = (
-            f"mkdir -p {shlex.quote(guest_parent)} && "
-            f"cd {shlex.quote(guest_parent)} && "
-            f"rm -rf {shlex.quote(guest_base)} && tar -xf - && "
-            f"{{ [ {shlex.quote(host_base)} = {shlex.quote(guest_base)} ] || "
-            f"mv {shlex.quote(host_base)} {shlex.quote(guest_base)}; }}"
-        )
-        tar = subprocess.Popen(
-            ["tar", "-C", host_parent, "-cf", "-", host_base],
-            stdout=subprocess.PIPE,
-        )
-        # Pass the command as one arg: ssh space-joins everything after
-        # the host into a single string for the guest's login shell, so a
-        # `sh -c <remote>` split would drop everything past the first word
-        # (the guest shell runs `<remote>` directly; stdin carries the
-        # tar).
-        ssh = subprocess.run(
-            [*self._ssh(tty=False), "--", remote],
-            stdin=tar.stdout, capture_output=True, text=True, check=False,
-        )
-        tar.wait()
-        if tar.returncode != 0 or ssh.returncode != 0:
-            sys.stderr.write(ssh.stderr)
-            raise subprocess.CalledProcessError(
-                ssh.returncode or tar.returncode,
-                ["cp_in", host_path, container_path],
-            )
-
-    def close(self) -> None:
-        # Real teardown (VM terminate, TAP release) lives on the launch
-        # ExitStack; this is the idempotent alias the ABC expects.
-        pass

bot_bottle/backend/firecracker/bottle_cleanup_plan.py

@@ -1,32 +0,0 @@
-"""Cleanup plan for the Firecracker backend."""
-
-from __future__ import annotations
-
-from dataclasses import dataclass
-
-from ...log import info
-from .. import BottleCleanupPlan
-
-
-@dataclass(frozen=True)
-class FirecrackerBottleCleanupPlan(BottleCleanupPlan):
-    # PIDs of orphaned firecracker VMM processes and the sidecar
-    # containers left behind by previous bottles.
-    vm_pids: tuple[int, ...] = ()
-    containers: tuple[str, ...] = ()
-    run_dirs: tuple[str, ...] = ()
-
-    def print(self) -> None:
-        if self.empty:
-            info("firecracker cleanup: nothing to remove")
-            return
-        for pid in self.vm_pids:
-            info(f"firecracker VM process: pid {pid}")
-        for name in self.containers:
-            info(f"firecracker sidecar container: {name}")
-        for path in self.run_dirs:
-            info(f"firecracker run dir: {path}")
-
-    @property
-    def empty(self) -> bool:
-        return not (self.vm_pids or self.containers or self.run_dirs)

bot_bottle/backend/firecracker/bottle_plan.py

@@ -1,63 +0,0 @@
-"""Plan type for the Firecracker backend."""
-
-from __future__ import annotations
-
-from dataclasses import dataclass, field
-from pathlib import Path
-
-from ...agent_provider import PromptMode
-from .. import BottlePlan
-
-
-@dataclass(frozen=True)
-class FirecrackerBottlePlan(BottlePlan):
-    slug: str
-    forwarded_env: dict[str, str] = field(repr=False)
-    # Stamped by launch once the sidecar is up and its ports are
-    # published on the host-side TAP IP (empty at prepare time).
-    agent_proxy_url: str = ""
-    agent_git_gate_url: str = ""
-    agent_supervise_url: str = ""
-
-    @property
-    def container_name(self) -> str:
-        """Instance name, reused for the sidecar container + VM run dir.
-        Matches the `bot-bottle-<slug>` convention the other backends
-        use so cleanup/enumerate discovery-by-prefix keeps working."""
-        return self.agent_provision.instance_name
-
-    @property
-    def image(self) -> str:
-        return self.agent_provision.image
-
-    @property
-    def dockerfile_path(self) -> str:
-        return self.agent_provision.dockerfile
-
-    @property
-    def prompt_file(self) -> Path:
-        return self.agent_provision.prompt_file
-
-    @property
-    def agent_command(self) -> str:
-        return self.agent_provision.command
-
-    @property
-    def agent_prompt_mode(self) -> PromptMode:
-        return self.agent_provision.prompt_mode
-
-    @property
-    def agent_provider_template(self) -> str:
-        return self.agent_provision.template
-
-    @property
-    def git_gate_insteadof_host(self) -> str:
-        if self.agent_git_gate_url.startswith("http://"):
-            return self.agent_git_gate_url.removeprefix("http://").rstrip("/")
-        return super().git_gate_insteadof_host
-
-    @property
-    def git_gate_insteadof_scheme(self) -> str:
-        if self.agent_git_gate_url.startswith("http://"):
-            return "http"
-        return super().git_gate_insteadof_scheme

bot_bottle/backend/firecracker/cleanup.py

@@ -1,90 +0,0 @@
-"""Cleanup for the Firecracker backend.
-
-Orphans are: firecracker VMM processes whose config lives under our run
-dir, the `bot-bottle-sidecars-*` containers, and the per-bottle run
-dirs. TAP slots free themselves (the flock drops when the launcher
-exits), so there is nothing to reclaim there.
-"""
-
-from __future__ import annotations
-
-import os
-import shutil
-import signal
-import subprocess
-from pathlib import Path
-
-from ...log import info
-from . import util
-from .bottle_cleanup_plan import FirecrackerBottleCleanupPlan
-
-_SIDECAR_PREFIX = "bot-bottle-sidecars-"
-
-
-def _run_root() -> Path:
-    return util.cache_dir() / "run"
-
-
-def _orphan_vm_pids() -> list[int]:
-    """firecracker processes whose --config-file is under our run dir."""
-    run_root = str(_run_root())
-    result = subprocess.run(
-        ["pgrep", "-a", "firecracker"],
-        capture_output=True, text=True, check=False,
-    )
-    if result.returncode != 0:
-        return []
-    pids: list[int] = []
-    for line in result.stdout.splitlines():
-        parts = line.split(None, 1)
-        if len(parts) != 2 or run_root not in parts[1]:
-            continue
-        try:
-            pids.append(int(parts[0]))
-        except ValueError:
-            continue
-    return pids
-
-
-def _sidecar_containers() -> list[str]:
-    result = subprocess.run(
-        ["docker", "ps", "-a", "--format", "{{.Names}}",
-         "--filter", f"name={_SIDECAR_PREFIX}"],
-        capture_output=True, text=True, check=False,
-    )
-    if result.returncode != 0:
-        return []
-    return sorted(n.strip() for n in result.stdout.splitlines() if n.strip())
-
-
-def _run_dirs() -> list[str]:
-    run_root = _run_root()
-    if not run_root.is_dir():
-        return []
-    return sorted(str(p) for p in run_root.iterdir() if p.is_dir())
-
-
-def prepare_cleanup() -> FirecrackerBottleCleanupPlan:
-    return FirecrackerBottleCleanupPlan(
-        vm_pids=tuple(_orphan_vm_pids()),
-        containers=tuple(_sidecar_containers()),
-        run_dirs=tuple(_run_dirs()),
-    )
-
-
-def cleanup(plan: FirecrackerBottleCleanupPlan) -> None:
-    for pid in plan.vm_pids:
-        info(f"kill firecracker VM pid {pid}")
-        try:
-            os.kill(pid, signal.SIGTERM)
-        except ProcessLookupError:
-            pass
-    for name in plan.containers:
-        info(f"docker rm -f {name}")
-        subprocess.run(
-            ["docker", "rm", "-f", name],
-            stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, check=False,
-        )
-    for path in plan.run_dirs:
-        info(f"rm -rf {path}")
-        shutil.rmtree(path, ignore_errors=True)

bot_bottle/backend/firecracker/enumerate.py

@@ -1,43 +0,0 @@
-"""Active-agent enumeration for the Firecracker backend.
-
-The agent runs in a VM (no container to list), so a live bottle is
-identified by its running sidecar container `bot-bottle-sidecars-<slug>`
-— the same discovery-by-prefix the other backends use.
-"""
-
-from __future__ import annotations
-
-import subprocess
-
-from ...bottle_state import read_metadata
-from .. import ActiveAgent
-
-_SIDECAR_PREFIX = "bot-bottle-sidecars-"
-
-
-def enumerate_active() -> list[ActiveAgent]:
-    result = subprocess.run(
-        ["docker", "ps", "--format", "{{.Names}}",
-         "--filter", f"name={_SIDECAR_PREFIX}"],
-        capture_output=True, text=True, check=False,
-    )
-    if result.returncode != 0:
-        return []
-    out: list[ActiveAgent] = []
-    for name in sorted(n.strip() for n in result.stdout.splitlines() if n.strip()):
-        slug = name[len(_SIDECAR_PREFIX):]
-        metadata = read_metadata(slug)
-        if metadata is None or metadata.backend != "firecracker":
-            # Skip sidecars owned by another backend (docker shares the
-            # container-name prefix).
-            continue
-        out.append(ActiveAgent(
-            backend_name="firecracker",
-            slug=slug,
-            agent_name=metadata.agent_name,
-            started_at=metadata.started_at,
-            services=(),
-            label=metadata.label,
-            color=metadata.color,
-        ))
-    return out

bot_bottle/backend/firecracker/firecracker_vm.py

@@ -1,173 +0,0 @@
-"""Firecracker microVM process lifecycle.
-
-A bottle VM is one `firecracker` process booted from a JSON config
-(kernel + writable rootfs ext4 + one TAP network interface). We run it
-`--no-api`: all configuration is in the config file, and teardown is a
-process signal — the microVM dies with its VMM, which is exactly the
-ephemeral-bottle semantics we want. No API socket, no runtime
-reconfiguration.
-
-The guest gets its IP from the kernel `ip=` cmdline (kernel-level
-autoconfig, no in-guest iproute2) and its SSH pubkey from a `bb_pubkey=`
-cmdline arg the init decodes.
-"""
-
-from __future__ import annotations
-
-import base64
-import json
-import signal
-import subprocess
-import time
-from dataclasses import dataclass
-from pathlib import Path
-
-from ...log import die, info
-from . import util
-
-
-# Serial console off the critical path but captured to a log for
-# debugging boot failures. `reboot=k panic=1 pci=off` are the standard
-# Firecracker guest args; `i8042.*` skip the (absent) PS/2 probe to
-# shave boot time.
-_BASE_BOOT_ARGS = (
-    "console=ttyS0 reboot=k panic=1 pci=off "
-    "i8042.noaux i8042.nomux i8042.nopnp i8042.dumbkbd "
-    "root=/dev/vda rw init=/bb-init"
-)
-
-
-@dataclass
-class VmHandle:
-    """A running microVM: its VMM process, guest IP, and console log."""
-
-    process: subprocess.Popen[bytes]
-    guest_ip: str
-    console_log: Path
-
-    def is_alive(self) -> bool:
-        return self.process.poll() is None
-
-    def terminate(self) -> None:
-        """Stop the VMM (and thus the guest). SIGTERM, then SIGKILL."""
-        if self.process.poll() is not None:
-            return
-        self.process.send_signal(signal.SIGTERM)
-        try:
-            self.process.wait(timeout=5)
-        except subprocess.TimeoutExpired:
-            self.process.kill()
-            self.process.wait(timeout=5)
-
-
-def _boot_args(guest_ip: str, host_ip: str, pubkey: str) -> str:
-    # ip=<client>::<gw>:<netmask>::<dev>:off — /31 point-to-point link,
-    # so netmask is 255.255.255.254 and the gateway is the host TAP IP.
-    ip_arg = f"ip={guest_ip}::{host_ip}:255.255.255.254::eth0:off"
-    pub_b64 = base64.b64encode(pubkey.encode()).decode()
-    return f"{_BASE_BOOT_ARGS} {ip_arg} bb_pubkey={pub_b64}"
-
-
-def _config(
-    *,
-    rootfs: Path,
-    tap: str,
-    guest_ip: str,
-    host_ip: str,
-    pubkey: str,
-    vcpus: int,
-    mem_mib: int,
-    guest_mac: str,
-) -> dict[str, object]:
-    return {
-        "boot-source": {
-            "kernel_image_path": str(util.kernel_path()),
-            "boot_args": _boot_args(guest_ip, host_ip, pubkey),
-        },
-        "drives": [
-            {
-                "drive_id": "rootfs",
-                "path_on_host": str(rootfs),
-                "is_root_device": True,
-                "is_read_only": False,
-            }
-        ],
-        "network-interfaces": [
-            {
-                "iface_id": "eth0",
-                "host_dev_name": tap,
-                "guest_mac": guest_mac,
-            }
-        ],
-        "machine-config": {
-            "vcpu_count": vcpus,
-            "mem_size_mib": mem_mib,
-        },
-    }
-
-
-def boot(
-    *,
-    name: str,
-    rootfs: Path,
-    tap: str,
-    guest_ip: str,
-    host_ip: str,
-    pubkey: str,
-    run_dir: Path,
-    vcpus: int = 2,
-    mem_mib: int = 2048,
-    guest_mac: str = "06:00:AC:10:00:02",
-) -> VmHandle:
-    """Write the config and launch the VMM. Returns once the process is
-    spawned; callers wait for SSH readiness separately."""
-    run_dir.mkdir(parents=True, exist_ok=True)
-    config_path = run_dir / "config.json"
-    console_log = run_dir / "console.log"
-    config_path.write_text(json.dumps(
-        _config(
-            rootfs=rootfs, tap=tap, guest_ip=guest_ip, host_ip=host_ip,
-            pubkey=pubkey, vcpus=vcpus, mem_mib=mem_mib, guest_mac=guest_mac,
-        ),
-        indent=2,
-    ))
-
-    info(f"booting microVM {name} on {tap} (guest {guest_ip})")
-    log_fh = console_log.open("wb")
-    process = subprocess.Popen(
-        ["firecracker", "--no-api", "--config-file", str(config_path)],
-        stdout=log_fh, stderr=subprocess.STDOUT, stdin=subprocess.DEVNULL,
-    )
-    return VmHandle(process=process, guest_ip=guest_ip, console_log=console_log)
-
-
-def wait_for_ssh(
-    vm: VmHandle, private_key: Path, *, timeout: float = 30.0,
-) -> None:
-    """Poll SSH until the guest accepts a command or the deadline
-    passes. Dies (with the console tail) if the VMM exits early or the
-    guest never comes up — a boot failure must be loud, not a hang."""
-    deadline = time.monotonic() + timeout
-    probe = util.ssh_base_argv(private_key, vm.guest_ip) + ["true"]
-    while time.monotonic() < deadline:
-        if not vm.is_alive():
-            die(f"microVM exited during boot (rc={vm.process.returncode}).\n"
-                f"{_console_tail(vm.console_log)}")
-        result = subprocess.run(
-            probe, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL,
-            check=False,
-        )
-        if result.returncode == 0:
-            return
-        time.sleep(0.5)
-    die(f"microVM {vm.guest_ip} did not accept SSH within {timeout:.0f}s.\n"
-        f"{_console_tail(vm.console_log)}")
-
-
-def _console_tail(console_log: Path, lines: int = 25) -> str:
-    try:
-        text = console_log.read_text(errors="replace").splitlines()
-    except OSError:
-        return "(no console log)"
-    tail = "\n".join(text[-lines:])
-    return f"--- guest console (last {lines} lines) ---\n{tail}"

bot_bottle/backend/firecracker/freezer.py

@@ -1,76 +0,0 @@
-"""FirecrackerFreezer — snapshot a running microVM to a Docker image.
-
-The VM is live and can't be block-copied safely, so — like the macOS
-backend — we stream the guest root filesystem out over the control
-channel (SSH here) and rebuild an image from it. The bottle keeps
-running after the snapshot.
-"""
-
-from __future__ import annotations
-
-import json
-import os
-import subprocess
-import tempfile
-from pathlib import Path
-
-from ...log import die, info
-from .. import ActiveAgent
-from ..freeze import Freezer
-from . import util
-
-
-class FirecrackerFreezer(Freezer):
-    backend_name = "firecracker"
-
-    def _freeze(self, agent: ActiveAgent) -> str:
-        run_dir = util.cache_dir() / "run" / agent.slug
-        private_key = run_dir / "bottle_id_ed25519"
-        guest_ip = _guest_ip_from_config(run_dir / "config.json")
-        if not private_key.is_file() or not guest_ip:
-            die(f"cannot freeze {agent.slug}: run dir {run_dir} is missing the "
-                f"SSH key or VM config (is the bottle still running?)")
-        image_tag = f"bot-bottle-committed-{agent.slug}:latest"
-        _commit_via_ssh(private_key, guest_ip, image_tag)
-        info(f"committed {agent.slug} -> {image_tag!r}")
-        return image_tag
-
-    def _export_hint(self, slug: str, image_ref: str) -> None:
-        info(f"to export for migration:      docker image save {image_ref} "
-             f"-o {slug}.tar")
-
-
-def _guest_ip_from_config(config_path: Path) -> str:
-    try:
-        cfg = json.loads(config_path.read_text())
-    except (OSError, json.JSONDecodeError):
-        return ""
-    boot_args = cfg.get("boot-source", {}).get("boot_args", "")
-    for token in boot_args.split():
-        if token.startswith("ip="):
-            # ip=<client>::<gw>:<mask>::<dev>:off
-            return token[len("ip="):].split(":", 1)[0]
-    return ""
-
-
-def _commit_via_ssh(private_key: Path, guest_ip: str, image_tag: str) -> None:
-    with tempfile.TemporaryDirectory(prefix="bot-bottle-fc-commit.") as tmp:
-        rootfs_tar = os.path.join(tmp, "rootfs.tar")
-        ssh = util.ssh_base_argv(private_key, guest_ip)
-        with open(rootfs_tar, "wb") as tar_out:
-            result = subprocess.run(
-                [*ssh, "--", "tar", "--create", "--one-file-system",
-                 "--exclude=./proc", "--exclude=./sys", "--exclude=./dev",
-                 "--exclude=./run", "--file=-", "--directory=/", "."],
-                stdout=tar_out, stderr=subprocess.PIPE, check=False,
-            )
-        if result.returncode != 0:
-            die(f"ssh tar for {guest_ip} failed: "
-                f"{(result.stderr or b'').decode().strip() or '<no stderr>'}")
-        with open(os.path.join(tmp, "Dockerfile"), "w", encoding="utf-8") as f:
-            f.write("FROM scratch\nADD rootfs.tar /\nUSER node\nWORKDIR /home/node\n")
-        build = subprocess.run(
-            ["docker", "build", "-t", image_tag, tmp], check=False,
-        )
-        if build.returncode != 0:
-            die(f"docker build for {image_tag!r} failed")

bot_bottle/backend/firecracker/isolation_probe.py

@@ -1,116 +0,0 @@
-"""Empirical, post-boot isolation probe — the authoritative fail-closed
-egress-boundary check.
-
-The pre-boot nft check can't be trusted on every host (listing an
-nftables table typically needs root; the launcher runs unprivileged).
-So before the agent ever runs, we prove the boundary directly: open a
-canary TCP listener on a host IP the VM must NOT be able to reach (the
-host's primary non-TAP address), then have the guest try to connect. If
-the isolation rules are in force the connection is dropped and times
-out; if it succeeds, the VM can reach host services it shouldn't — a
-sandbox escape — and we refuse to continue.
-
-The listener is load-bearing: without it a "blocked" result could just
-be connection-refused. With it, a reachable canary means a real leak
-and a timeout means a real drop.
-"""
-
-from __future__ import annotations
-
-import socket
-import subprocess
-import threading
-from pathlib import Path
-
-from ...log import die, info, warn
-from . import util
-
-
-def _host_primary_ip() -> str:
-    """The source IP the host uses for off-box traffic (its LAN
-    address) — a canary the VM must not reach. Empty if the host has no
-    such route (isolated box)."""
-    result = subprocess.run(
-        ["ip", "-o", "route", "get", "1.1.1.1"],
-        capture_output=True, text=True, check=False,
-    )
-    if result.returncode != 0:
-        return ""
-    tokens = result.stdout.split()
-    # `... src <addr> ...` — the address the host would use as source.
-    if "src" in tokens:
-        idx = tokens.index("src")
-        if idx + 1 < len(tokens):
-            return tokens[idx + 1]
-    return ""
-
-
-# Guest-side connect test: exit 0 = reached the canary (LEAK), 1 =
-# blocked (good), 2 = no usable tool (inconclusive -> fail-closed).
-_GUEST_PROBE = r"""
-h="$1"; p="$2"
-if command -v python3 >/dev/null 2>&1; then
-  python3 - "$h" "$p" <<'PY'
-import socket, sys
-s = socket.socket(); s.settimeout(3)
-sys.exit(0 if s.connect_ex((sys.argv[1], int(sys.argv[2]))) == 0 else 1)
-PY
-elif command -v bash >/dev/null 2>&1; then
-  timeout 3 bash -c "exec 3<>/dev/tcp/$h/$p" >/dev/null 2>&1
-elif command -v nc >/dev/null 2>&1; then
-  nc -w3 -z "$h" "$p" >/dev/null 2>&1
-else
-  exit 2
-fi
-"""
-
-
-def verify_isolation(private_key: Path, guest_ip: str) -> None:
-    """Prove the VM cannot reach the host's primary IP. Dies
-    (fail-closed) on a confirmed leak or if the guest has no tool to
-    run the test. Warns (does not fail) when the host has no canary
-    address to test against."""
-    canary_ip = _host_primary_ip()
-    if not canary_ip:
-        warn("isolation probe skipped: host has no non-TAP route to test "
-             "against (isolated box).")
-        return
-
-    listener = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
-    listener.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
-    listener.bind((canary_ip, 0))
-    listener.listen(1)
-    listener.settimeout(6)
-    canary_port = listener.getsockname()[1]
-
-    accepted: list[bool] = []
-
-    def _accept() -> None:
-        try:
-            conn, _ = listener.accept()
-            accepted.append(True)
-            conn.close()
-        except OSError:
-            pass
-
-    thread = threading.Thread(target=_accept, daemon=True)
-    thread.start()
-
-    ssh = util.ssh_base_argv(private_key, guest_ip)
-    result = subprocess.run(
-        [*ssh, "--", "sh", "-s", "--", canary_ip, str(canary_port)],
-        input=_GUEST_PROBE, capture_output=True, text=True, check=False,
-    )
-    thread.join(timeout=7)
-    listener.close()
-
-    if result.returncode == 0 or accepted:
-        die(f"ISOLATION FAILURE: the VM reached the host canary "
-            f"{canary_ip}:{canary_port}. The egress boundary is not in "
-            f"force — refusing to run the agent (fail-closed). Verify the "
-            f"nft table with: ./cli.py backend setup --backend=firecracker")
-    if result.returncode == 2:
-        die("isolation probe inconclusive: the guest has no python3/bash/nc "
-            "to run the connectivity test. Refusing to continue "
-            "(fail-closed).")
-    info(f"isolation verified: VM cannot reach host {canary_ip}")

bot_bottle/backend/firecracker/launch.py

@@ -1,404 +0,0 @@
-"""Launch flow for the Firecracker backend.
-
-Per bottle:
-  1. mint the egress CA, build the agent image (docker), export it to a
-     cached ext4 rootfs;
-  2. claim a free TAP pool slot (rootless flock);
-  3. bring up the Docker sidecar bundle, publishing egress / git-gate /
-     supervise on the slot's host-side TAP IP at fixed ports;
-  4. boot the microVM on that TAP; wait for SSH;
-  5. provision (CA, prompt, skills, workspace, git, supervise) over SSH.
-
-Isolation is enforced by the operator-provisioned nft table (checked
-fail-closed in preflight): a VM reaches only its sidecar (DNAT'd from
-the host TAP IP) and nothing else. The agent's HTTPS_PROXY therefore
-points at `http://<host_tap_ip>:9099`, its only route to the world.
-"""
-
-from __future__ import annotations
-
-import dataclasses
-import os
-import subprocess
-from contextlib import ExitStack, contextmanager
-from pathlib import Path
-from typing import Callable, Generator
-
-from ...bottle_state import (
-    egress_state_dir,
-    git_gate_state_dir,
-    read_committed_image,
-)
-from ...egress import (
-    EGRESS_ROUTES_IN_CONTAINER,
-    egress_agent_env_entries,
-    egress_resolve_token_values,
-    egress_sidecar_env_entries,
-)
-from ...git_gate import (
-    provision_git_gate_dynamic_keys,
-    revoke_git_gate_provisioned_keys,
-)
-from ...log import die, info, warn
-from ...supervise import DB_PATH_IN_CONTAINER, SUPERVISE_PORT
-from ...util import expand_tilde
-from ..docker.egress import (
-    EGRESS_CA_IN_CONTAINER,
-    EGRESS_PORT,
-    egress_tls_init,
-)
-from ..docker.git_gate import (
-    GIT_GATE_ACCESS_HOOK_IN_CONTAINER,
-    GIT_GATE_CREDS_DIR_IN_CONTAINER,
-    GIT_GATE_ENTRYPOINT_IN_CONTAINER,
-    GIT_GATE_HOOK_IN_CONTAINER,
-)
-from ..docker.sidecar_bundle import (
-    SIDECAR_BUNDLE_DOCKERFILE,
-    SIDECAR_BUNDLE_IMAGE,
-)
-from ..util import AGENT_CA_BUNDLE, AGENT_CA_PATH
-from . import firecracker_vm, isolation_probe, netpool, util
-from .bottle import FirecrackerBottle
-from .bottle_plan import FirecrackerBottlePlan
-
-
-_REPO_DIR = str(Path(__file__).resolve().parent.parent.parent.parent)
-_GIT_HTTP_PORT = 9420
-_GIT_GATE_READY_FILE = "/run/git-gate/ready"
-
-
-def sidecar_container_name(slug: str) -> str:
-    return f"bot-bottle-sidecars-{slug}"
-
-
-@contextmanager
-def launch(
-    plan: FirecrackerBottlePlan,
-    *,
-    provision: Callable[[FirecrackerBottlePlan, "FirecrackerBottle"], str | None],
-) -> Generator[FirecrackerBottle, None, None]:
-    stack = ExitStack()
-    bottle_for_revoke = plan.manifest.bottle
-    git_gate_dir_for_revoke = git_gate_state_dir(plan.slug)
-
-    def teardown() -> None:
-        teardown_exc: BaseException | None = None
-        try:
-            stack.close()
-        except BaseException as exc:  # noqa: W0718 - teardown must continue
-            teardown_exc = exc
-            warn(f"firecracker teardown failed: {exc!r}")
-        revoke_git_gate_provisioned_keys(bottle_for_revoke, git_gate_dir_for_revoke)
-        if teardown_exc is not None:
-            raise teardown_exc
-
-    try:
-        plan = _mint_certs(plan)
-        plan = _build_agent_image(plan)
-
-        # Claim a TAP slot; the flock is held until teardown closes it.
-        slot, lock = netpool.allocate(plan.slug)
-        stack.callback(lock.close)
-        info(f"firecracker slot {slot.iface}: host={slot.host_ip} "
-             f"guest={slot.guest_ip}")
-
-        plan = _provision_git_gate_keys(plan)
-
-        sidecar_name = sidecar_container_name(plan.slug)
-        _force_remove_container(sidecar_name)
-        _start_sidecar_bundle(plan, sidecar_name, slot.host_ip)
-        stack.callback(_force_remove_container, sidecar_name)
-        _stage_git_gate(plan, sidecar_name)
-
-        plan = _stamp_agent_urls(plan, slot.host_ip)
-
-        # Build the per-bottle rootfs + SSH key, then boot.
-        base_dir = util.build_base_rootfs_dir(plan.image)
-        run_dir = util.cache_dir() / "run" / plan.slug
-        run_dir.mkdir(parents=True, exist_ok=True)
-        rootfs = run_dir / "rootfs.ext4"
-        util.build_rootfs_ext4(base_dir, rootfs)
-        private_key, pubkey = util.generate_keypair(run_dir)
-
-        vm = firecracker_vm.boot(
-            name=plan.container_name,
-            rootfs=rootfs,
-            tap=slot.iface,
-            guest_ip=slot.guest_ip,
-            host_ip=slot.host_ip,
-            pubkey=pubkey,
-            run_dir=run_dir,
-        )
-        stack.callback(vm.terminate)
-        firecracker_vm.wait_for_ssh(vm, private_key)
-
-        # Authoritative fail-closed egress-boundary check, before the
-        # agent runs: prove the VM cannot reach the host directly.
-        isolation_probe.verify_isolation(private_key, slot.guest_ip)
-
-        bottle = FirecrackerBottle(
-            plan.container_name,
-            private_key=private_key,
-            guest_ip=slot.guest_ip,
-            guest_env=_agent_guest_env(plan, slot.host_ip),
-            agent_command=plan.agent_command,
-            agent_prompt_mode=plan.agent_prompt_mode,
-            agent_provider_template=plan.agent_provider_template,
-            terminal_title=(
-                f"{plan.spec.label} ({plan.spec.agent_name})"
-                if plan.spec.label else plan.spec.agent_name
-            ),
-            terminal_color=plan.spec.color,
-            agent_workdir=plan.workspace_plan.workdir,
-        )
-        bottle.prompt_path = provision(plan, bottle)
-
-        yield bottle
-    finally:
-        teardown()
-
-
-def _mint_certs(plan: FirecrackerBottlePlan) -> FirecrackerBottlePlan:
-    egress_ca_host, egress_ca_cert_only = egress_tls_init(egress_state_dir(plan.slug))
-    egress_plan = dataclasses.replace(
-        plan.egress_plan,
-        mitmproxy_ca_host_path=egress_ca_host,
-        mitmproxy_ca_cert_only_host_path=egress_ca_cert_only,
-    )
-    return dataclasses.replace(plan, egress_plan=egress_plan)
-
-
-def _build_agent_image(plan: FirecrackerBottlePlan) -> FirecrackerBottlePlan:
-    _docker_build(SIDECAR_BUNDLE_IMAGE, _REPO_DIR, dockerfile=SIDECAR_BUNDLE_DOCKERFILE)
-    committed = read_committed_image(plan.slug)
-    if committed and _image_exists(committed):
-        info(f"using committed image {committed!r}")
-        return dataclasses.replace(
-            plan,
-            agent_provision=dataclasses.replace(plan.agent_provision, image=committed),
-        )
-    _docker_build(plan.image, _REPO_DIR, dockerfile=plan.dockerfile_path)
-    return plan
-
-
-def _provision_git_gate_keys(plan: FirecrackerBottlePlan) -> FirecrackerBottlePlan:
-    if not plan.git_gate_plan.upstreams:
-        return plan
-    git_gate_plan = provision_git_gate_dynamic_keys(
-        plan.manifest.bottle, plan.git_gate_plan, git_gate_state_dir(plan.slug),
-    )
-    return dataclasses.replace(plan, git_gate_plan=git_gate_plan)
-
-
-def _stamp_agent_urls(
-    plan: FirecrackerBottlePlan, host_ip: str,
-) -> FirecrackerBottlePlan:
-    proxy_url = f"http://{host_ip}:{EGRESS_PORT}"
-    supervise_url = (
-        f"http://{host_ip}:{SUPERVISE_PORT}/" if plan.supervise_plan is not None else ""
-    )
-    git_gate_url = (
-        f"http://{host_ip}:{_GIT_HTTP_PORT}" if plan.git_gate_plan.upstreams else ""
-    )
-    return dataclasses.replace(
-        plan,
-        agent_proxy_url=proxy_url,
-        agent_git_gate_url=git_gate_url,
-        agent_supervise_url=supervise_url,
-    )
-
-
-# --- sidecar bundle (Docker) ----------------------------------------
-
-def _start_sidecar_bundle(
-    plan: FirecrackerBottlePlan, sidecar_name: str, host_ip: str,
-) -> None:
-    argv = ["docker", "run", "--name", sidecar_name, "--detach", "--rm",
-            "-e", f"BOT_BOTTLE_SIDECAR_DAEMONS={','.join(_sidecar_daemons(plan))}"]
-    for entry in _sidecar_env_entries(plan):
-        argv += ["-e", entry]
-    for host_path, container_path, read_only in _sidecar_mounts(plan):
-        argv += ["-v", f"{host_path}:{container_path}{':ro' if read_only else ''}"]
-    # Publish on the slot's host TAP IP at fixed ports — each bottle
-    # has a distinct host_ip, so fixed ports never collide, and the VM
-    # reaches them at a stable, well-known address (its only route out).
-    for port in _sidecar_ports(plan):
-        argv += ["-p", f"{host_ip}:{port}:{port}"]
-    argv.append(SIDECAR_BUNDLE_IMAGE)
-
-    effective_env = {**dict(os.environ), **plan.agent_provision.provisioned_env}
-    token_values = egress_resolve_token_values(
-        plan.egress_plan.token_env_map, effective_env,
-    )
-    env = {**os.environ, **token_values}
-    info(f"docker run sidecar bundle {sidecar_name} (published on {host_ip})")
-    result = subprocess.run(argv, capture_output=True, text=True, env=env, check=False)
-    if result.returncode != 0:
-        die(f"docker run for sidecar bundle {sidecar_name} failed: "
-            f"{(result.stderr or '').strip() or '<no stderr>'}")
-
-
-def _sidecar_daemons(plan: FirecrackerBottlePlan) -> tuple[str, ...]:
-    daemons = ["egress"]
-    if plan.git_gate_plan.upstreams:
-        daemons += ["git-gate", "git-http"]
-    if plan.supervise_plan is not None:
-        daemons.append("supervise")
-    return tuple(daemons)
-
-
-def _sidecar_ports(plan: FirecrackerBottlePlan) -> tuple[int, ...]:
-    ports = [EGRESS_PORT]
-    if plan.git_gate_plan.upstreams:
-        ports.append(_GIT_HTTP_PORT)
-    if plan.supervise_plan is not None:
-        ports.append(SUPERVISE_PORT)
-    return tuple(ports)
-
-
-def _sidecar_env_entries(plan: FirecrackerBottlePlan) -> tuple[str, ...]:
-    env: list[str] = list(egress_sidecar_env_entries(plan.egress_plan))
-    if plan.git_gate_plan.upstreams:
-        env.append(f"BOT_BOTTLE_GIT_GATE_READY_FILE={_GIT_GATE_READY_FILE}")
-    if plan.supervise_plan is not None:
-        env += [
-            f"SUPERVISE_BOTTLE_SLUG={plan.slug}",
-            f"SUPERVISE_DB_PATH={DB_PATH_IN_CONTAINER}",
-            f"SUPERVISE_PORT={SUPERVISE_PORT}",
-        ]
-    return tuple(env)
-
-
-def _sidecar_mounts(
-    plan: FirecrackerBottlePlan,
-) -> tuple[tuple[str, str, bool], ...]:
-    mounts: list[tuple[str, str, bool]] = []
-    ep = plan.egress_plan
-    mounts.append((str(ep.mitmproxy_ca_host_path.parent),
-                   str(Path(EGRESS_CA_IN_CONTAINER).parent), False))
-    if ep.routes:
-        mounts.append((str(ep.routes_path.parent),
-                       str(Path(EGRESS_ROUTES_IN_CONTAINER).parent), True))
-    sp = plan.supervise_plan
-    if sp is not None:
-        mounts.append((str(sp.db_path.parent),
-                       str(Path(DB_PATH_IN_CONTAINER).parent), False))
-    return tuple(mounts)
-
-
-def _stage_git_gate(plan: FirecrackerBottlePlan, sidecar_name: str) -> None:
-    gp = plan.git_gate_plan
-    if not gp.upstreams:
-        return
-    _docker_exec(sidecar_name, [
-        "mkdir", "-p",
-        str(Path(GIT_GATE_HOOK_IN_CONTAINER).parent),
-        GIT_GATE_CREDS_DIR_IN_CONTAINER, "/git",
-        str(Path(_GIT_GATE_READY_FILE).parent),
-    ])
-    for host_path, container_path in _git_gate_files(plan):
-        _docker_cp(host_path, f"{sidecar_name}:{container_path}")
-    _docker_exec(sidecar_name, [
-        "sh", "-c",
-        f"chmod 755 {GIT_GATE_ENTRYPOINT_IN_CONTAINER} "
-        f"{GIT_GATE_HOOK_IN_CONTAINER} {GIT_GATE_ACCESS_HOOK_IN_CONTAINER} && "
-        f"chmod 600 {GIT_GATE_CREDS_DIR_IN_CONTAINER}/* && "
-        f"touch {_GIT_GATE_READY_FILE}",
-    ])
-
-
-def _git_gate_files(plan: FirecrackerBottlePlan) -> tuple[tuple[str, str], ...]:
-    gp = plan.git_gate_plan
-    files: list[tuple[str, str]] = [
-        (str(gp.entrypoint_script), GIT_GATE_ENTRYPOINT_IN_CONTAINER),
-        (str(gp.hook_script), GIT_GATE_HOOK_IN_CONTAINER),
-        (str(gp.access_hook_script), GIT_GATE_ACCESS_HOOK_IN_CONTAINER),
-    ]
-    for upstream in gp.upstreams:
-        files.append((expand_tilde(upstream.identity_file),
-                      f"{GIT_GATE_CREDS_DIR_IN_CONTAINER}/{upstream.name}-key"))
-        if upstream.known_hosts_file:
-            files.append((str(upstream.known_hosts_file),
-                          f"{GIT_GATE_CREDS_DIR_IN_CONTAINER}/{upstream.name}-known_hosts"))
-    return tuple(files)
-
-
-# --- agent guest env -------------------------------------------------
-
-def _agent_guest_env(plan: FirecrackerBottlePlan, host_ip: str) -> dict[str, str]:
-    """Env injected into every agent/exec call over SSH. The VM has no
-    baked process env (it just runs init), so the proxy/CA/git/supervise
-    wiring is applied per-invocation."""
-    proxy_url = f"http://{host_ip}:{EGRESS_PORT}"
-    no_proxy = f"localhost,127.0.0.1,{host_ip}"
-    env: dict[str, str] = {
-        "HTTPS_PROXY": proxy_url, "HTTP_PROXY": proxy_url,
-        "https_proxy": proxy_url, "http_proxy": proxy_url,
-        "NO_PROXY": no_proxy, "no_proxy": no_proxy,
-        "NODE_EXTRA_CA_CERTS": AGENT_CA_PATH,
-        "SSL_CERT_FILE": AGENT_CA_BUNDLE,
-        "REQUESTS_CA_BUNDLE": AGENT_CA_BUNDLE,
-    }
-    if plan.agent_git_gate_url:
-        env["GIT_GATE_URL"] = plan.agent_git_gate_url
-    if plan.agent_supervise_url:
-        env["MCP_SUPERVISE_URL"] = plan.agent_supervise_url
-    for entry in egress_agent_env_entries(plan.egress_plan):
-        key, _, value = entry.partition("=")
-        env[key] = value
-    env.update(plan.agent_provision.guest_env)
-    # Forwarded (bare-name) env: resolve host values now, since the VM
-    # can't inherit them from a `docker run --env NAME`.
-    for name in plan.forwarded_env:
-        value = os.environ.get(name)
-        if value is not None:
-            env[name] = value
-    return env
-
-
-# --- docker helpers --------------------------------------------------
-
-def _docker_build(ref: str, context: str, *, dockerfile: str = "") -> None:
-    info(f"docker build {ref}")
-    args = ["docker", "build", "-t", ref]
-    if dockerfile:
-        if not os.path.isabs(dockerfile):
-            dockerfile = os.path.join(context, dockerfile)
-        args += ["-f", dockerfile]
-    args.append(context)
-    result = subprocess.run(args, check=False)
-    if result.returncode != 0:
-        die(f"docker build for {ref!r} failed")
-
-
-def _image_exists(ref: str) -> bool:
-    return subprocess.run(
-        ["docker", "image", "inspect", ref],
-        stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, check=False,
-    ).returncode == 0
-
-
-def _force_remove_container(name: str) -> None:
-    subprocess.run(
-        ["docker", "rm", "-f", name],
-        stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, check=False,
-    )
-
-
-def _docker_exec(name: str, argv: list[str]) -> None:
-    result = subprocess.run(
-        ["docker", "exec", name, *argv], capture_output=True, text=True, check=False,
-    )
-    if result.returncode != 0:
-        die(f"docker exec in {name} failed: "
-            f"{(result.stderr or '').strip() or '<no stderr>'}")
-
-
-def _docker_cp(host_path: str, dest: str) -> None:
-    result = subprocess.run(
-        ["docker", "cp", host_path, dest], capture_output=True, text=True, check=False,
-    )
-    if result.returncode != 0:
-        die(f"docker cp {host_path} -> {dest} failed: "
-            f"{(result.stderr or '').strip() or '<no stderr>'}")

bot_bottle/backend/firecracker/netpool.defaults.env

@@ -1,17 +0,0 @@
-# Firecracker network-pool defaults — the SINGLE source of these values.
-#
-# Read by every consumer so they can't drift:
-#   * netpool.py  — parses this for the Python defaults (below).
-#   * scripts/firecracker-netpool.sh — falls back to these when the
-#     matching BOT_BOTTLE_FC_* env var is unset.
-#   * nix/firecracker-netpool.nix — readFile-parses this for its option
-#     defaults, then passes the resolved values back as Environment=.
-#
-# Plain KEY=VALUE (no quoting, no inline comments, no spaces around `=`)
-# so it is bash-sourceable, systemd EnvironmentFile-compatible, and
-# trivially parseable from Python and Nix. A real BOT_BOTTLE_FC_* env
-# var of the same name always overrides the value here.
-BOT_BOTTLE_FC_POOL_SIZE=8
-BOT_BOTTLE_FC_IP_BASE=10.243.0.0
-BOT_BOTTLE_FC_IFACE_PREFIX=bbfc
-BOT_BOTTLE_FC_NFT_TABLE=bot_bottle_fc

bot_bottle/backend/firecracker/netpool.py

@@ -1,321 +0,0 @@
-"""Firecracker network pool: constants, IP math, allocation, and the
-config renderers (shell command + NixOS module) shown to operators.
-
-The Firecracker backend needs a privileged one-time network setup:
-a pool of point-to-point TAP devices (owned by the invoking user, so
-`./cli.py start` never needs root) and a dedicated nftables table that
-isolates every VM. The pool parameters live in exactly one place —
-`netpool.defaults.env`, a plain KEY=VALUE file next to this module —
-and every consumer reads *that*: this module (below), the shell script
-(`scripts/firecracker-netpool.sh`), and the NixOS module
-(`nix/firecracker-netpool.nix`). A `BOT_BOTTLE_FC_*` env var of the
-same name always overrides the file, and the backend's fail-closed
-preflight derives from these accessors, so nothing can drift.
-
-Topology (per slot i):
-  * TAP  ``bbfc{i}``  — no shared bridge, so no docker0 / virbr0 / cni0
-    / br-* collisions.
-  * a /31 host<->guest link: host = base + 2i (the gateway the VM
-    routes through), guest = base + 2i + 1 (the VM's address).
-  * isolation via ``table inet bot_bottle_fc``: a VM reaches only its
-    own sidecar (DNAT'd from the host TAP IP) and nothing else.
-
-The default IP block is ``10.243.0.0/16`` — an intentionally obscure
-corner of RFC-1918 private space. RFC-1918 is the range *designated*
-for private links; we pick a high, unusual /16 to steer clear of the
-common occupants (Docker's 172.17-31, libvirt's 192.168.122, k8s
-10.42/10.244, and typical home LANs on 192.168.0/1.x or 10.0.0.x).
-We deliberately avoid ``100.64.0.0/10`` (RFC-6598 CGNAT) because
-Tailscale hands out node addresses from exactly that range. No default
-is collision-proof, so `overlapping_routes()` is the real guard —
-`backend setup`/`status` and the launch preflight call it to catch
-a base that clashes with something already on the host.
-"""
-
-from __future__ import annotations
-
-import fcntl
-import ipaddress
-import os
-import subprocess
-from dataclasses import dataclass
-from pathlib import Path
-from typing import IO
-
-from ...log import die
-
-
-# The pool defaults live in one shared file (see module docstring); the
-# shell script and NixOS module read the same file, so the values can't
-# drift. This is a packaged data file — a missing/broken install is a
-# hard error, surfaced here rather than as confusing empty defaults.
-DEFAULTS_FILE = Path(__file__).with_name("netpool.defaults.env")
-
-
-def _load_defaults() -> dict[str, str]:
-    out: dict[str, str] = {}
-    for raw in DEFAULTS_FILE.read_text().splitlines():
-        line = raw.strip()
-        if not line or line.startswith("#") or "=" not in line:
-            continue
-        key, _, value = line.partition("=")
-        out[key.strip()] = value.strip()
-    return out
-
-
-_DEFAULTS = _load_defaults()
-
-
-def _cfg(key: str) -> str:
-    """A `BOT_BOTTLE_FC_*` env var overrides the shared-file default."""
-    try:
-        return os.environ.get(key) or _DEFAULTS[key]
-    except KeyError:
-        die(f"{key} is missing from {DEFAULTS_FILE.name} (broken install)")
-
-
-# Interface names are capped at 15 chars (IFNAMSIZ-1); "bbfc" + a small
-# index stays well under that and is distinctive enough to grep for.
-IFACE_PREFIX = _cfg("BOT_BOTTLE_FC_IFACE_PREFIX")
-NFT_TABLE = _cfg("BOT_BOTTLE_FC_NFT_TABLE")
-
-
-def pool_size() -> int:
-    return int(_cfg("BOT_BOTTLE_FC_POOL_SIZE"))
-
-
-def ip_base() -> str:
-    return _cfg("BOT_BOTTLE_FC_IP_BASE")
-
-
-# Sidecar ports the VM reaches at its host-side TAP IP. Kept in sync
-# with the backend constants (egress 9099, supervise 9100, git-http
-# 9420); rendered into the setup output for operator visibility.
-SIDECAR_PORTS = (9099, 9100, 9420)
-
-
-@dataclass(frozen=True)
-class Slot:
-    """One pool slot: a TAP device and its host/guest /31 addresses."""
-
-    index: int
-    iface: str
-    host_ip: str
-    guest_ip: str
-
-    @property
-    def guest_cidr(self) -> str:
-        """Guest address with the /31 prefix, for the kernel `ip=` arg."""
-        return f"{self.guest_ip}/31"
-
-
-def slot(index: int) -> Slot:
-    base = int(ipaddress.IPv4Address(ip_base()))
-    return Slot(
-        index=index,
-        iface=f"{IFACE_PREFIX}{index}",
-        host_ip=str(ipaddress.IPv4Address(base + 2 * index)),
-        guest_ip=str(ipaddress.IPv4Address(base + 2 * index + 1)),
-    )
-
-
-def all_slots() -> list[Slot]:
-    return [slot(i) for i in range(pool_size())]
-
-
-# --- fail-closed verification ---------------------------------------
-
-def _run_ok(argv: list[str]) -> bool:
-    """Run a probe command, treating a missing binary as failure
-    (rather than crashing) so callers can stay fail-closed."""
-    try:
-        return subprocess.run(
-            argv, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL,
-            check=False,
-        ).returncode == 0
-    except FileNotFoundError:
-        return False
-
-
-def nft_table_present() -> bool:
-    """True iff the isolation table exists in the active nftables
-    backend. The backend's preflight treats absence as fatal — the VM
-    must not boot without its egress boundary in place.
-
-    Listing may require root; when it can't be confirmed here the
-    launch path falls back to an empirical post-boot isolation probe.
-    Returns False (fail-closed) if `nft` is unavailable."""
-    return _run_ok(["nft", "list", "table", "inet", NFT_TABLE])
-
-
-def tap_present(iface: str) -> bool:
-    # `ip link show` is unprivileged, so the TAP-pool check is reliable
-    # for the non-root launcher.
-    return _run_ok(["ip", "link", "show", iface])
-
-
-def missing_taps() -> list[str]:
-    """Pool TAPs that the one-time setup has not created yet."""
-    return [s.iface for s in all_slots() if not tap_present(s.iface)]
-
-
-@dataclass(frozen=True)
-class RouteConflict:
-    """An existing host route whose destination overlaps the pool range
-    but isn't one of our own bbfc TAPs — i.e. the chosen IP base clashes
-    with something already on the host (a Tailscale CGNAT peer, a
-    docker/libvirt bridge, the LAN…)."""
-
-    dst: str
-    dev: str
-
-
-def _pool_span() -> tuple[int, int]:
-    """Inclusive [first, last] integer bounds of every address the pool
-    occupies: base .. base + 2*pool_size - 1."""
-    base = int(ipaddress.IPv4Address(ip_base()))
-    return base, base + 2 * pool_size() - 1
-
-
-def overlapping_routes() -> list[RouteConflict]:
-    """Existing routes whose destination overlaps the pool's address
-    range, excluding our own `bbfc*` TAP routes and the default route.
-
-    A non-empty result means `BOT_BOTTLE_FC_IP_BASE` collides with
-    something already configured on this host, so the pool would shadow
-    (or be shadowed by) it. Empty on success — or when `ip` is missing
-    or unparseable, since this is an advisory guard, not the fail-closed
-    isolation check (that's the nft table + post-boot probe)."""
-    import json
-
-    try:
-        proc = subprocess.run(
-            ["ip", "-json", "route", "show", "table", "all"],
-            capture_output=True, text=True, check=False,
-        )
-    except FileNotFoundError:
-        return []
-    if proc.returncode != 0 or not proc.stdout.strip():
-        return []
-    try:
-        routes = json.loads(proc.stdout)
-    except json.JSONDecodeError:
-        return []
-
-    lo, hi = _pool_span()
-    conflicts: list[RouteConflict] = []
-    for r in routes:
-        if not isinstance(r, dict):
-            continue
-        dst = r.get("dst")
-        dev = r.get("dev", "")
-        if not isinstance(dst, str) or dst in ("", "default"):
-            continue
-        if isinstance(dev, str) and dev.startswith(IFACE_PREFIX):
-            continue  # our own pool link
-        try:
-            net = ipaddress.ip_network(dst, strict=False)
-        except ValueError:
-            continue
-        if net.version != 4:
-            continue
-        r_lo = int(net.network_address)
-        r_hi = int(net.broadcast_address)
-        if r_lo <= hi and lo <= r_hi:  # ranges intersect
-            conflicts.append(RouteConflict(dst=dst, dev=str(dev)))
-    return conflicts
-
-
-# --- allocation ------------------------------------------------------
-
-def _lock_dir() -> Path:
-    d = Path.home() / ".cache" / "bot-bottle" / "firecracker" / "pool"
-    d.mkdir(parents=True, exist_ok=True)
-    return d
-
-
-def allocate(slug: str) -> tuple[Slot, IO[str]]:
-    """Claim a free pool slot for one bottle. Returns the slot and the
-    held lock file — the caller keeps it open for the VM's lifetime and
-    closes it on teardown; the flock auto-releases if the launcher
-    crashes, so a slot is never leaked. Dies when the pool is
-    exhausted.
-
-    A per-slot `flock` (rather than inspecting running processes) makes
-    allocation race-free across concurrent launches without a central
-    registry: the first launcher to grab the lock owns the slot."""
-    del slug  # logged by the caller; allocation is purely lock-driven
-    for s in all_slots():
-        lock_path = _lock_dir() / f"{s.iface}.lock"
-        handle = open(lock_path, "w", encoding="utf-8")
-        try:
-            fcntl.flock(handle, fcntl.LOCK_EX | fcntl.LOCK_NB)
-        except OSError:
-            handle.close()
-            continue
-        return s, handle
-    die(f"Firecracker TAP pool exhausted ({pool_size()} slots, all in "
-        f"use). Stop a running bottle or raise BOT_BOTTLE_FC_POOL_SIZE "
-        f"and re-run `./cli.py backend setup --backend=firecracker`.")
-    raise AssertionError("unreachable")
-
-
-# --- config renderers (shown by `./cli.py backend setup`) -----------
-
-# The persistent unit is the portable install: the same systemd oneshot
-# on every systemd distro (Debian/Ubuntu/Fedora/RHEL/Arch/…).
-SYSTEMD_UNIT = "bot-bottle-firecracker-netpool.service"
-
-
-def render_shell_setup() -> str:
-    """The imperative one-shot command — non-persistent fallback for
-    hosts without systemd (OpenRC/runit/manual)."""
-    env = _nondefault_env()
-    prefix = f"{env} " if env else ""
-    return f"sudo {prefix}./scripts/firecracker-netpool.sh up"
-
-
-def render_systemd_unit(owner: str, script_path: str) -> str:
-    """A portable systemd oneshot unit for the pool — identical across
-    every systemd distro. ExecStart/ExecStop delegate to the bundled
-    shell script (the single source of bring-up logic); pool params are
-    pinned via Environment= so the unit matches the CLI's current
-    settings and doesn't depend on $SUDO_USER at boot (systemd runs it
-    as root with no SUDO_USER, which would otherwise own the TAPs as
-    root and break the rootless launch)."""
-    return f"""[Unit]
-Description=bot-bottle Firecracker TAP pool + nft isolation table
-After=network-pre.target
-Wants=network-pre.target
-
-[Service]
-Type=oneshot
-RemainAfterExit=yes
-Environment=BOT_BOTTLE_FC_POOL_SIZE={pool_size()}
-Environment=BOT_BOTTLE_FC_IP_BASE={ip_base()}
-Environment=BOT_BOTTLE_FC_IFACE_PREFIX={IFACE_PREFIX}
-Environment=BOT_BOTTLE_FC_OWNER={owner}
-ExecStart={script_path} up
-ExecStop={script_path} down
-
-[Install]
-WantedBy=multi-user.target
-"""
-
-
-# The NixOS setup is a real, importable module (nix/firecracker-netpool.nix,
-# exposed as the flake output nixosModules.firecracker-netpool) rather than a
-# generated paste — see `backend setup` output.
-
-
-def _nondefault_env() -> str:
-    """Render any non-default pool env overrides so the printed shell
-    command reproduces the operator's current settings."""
-    pairs = []
-    if os.environ.get("BOT_BOTTLE_FC_POOL_SIZE"):
-        pairs.append(f"BOT_BOTTLE_FC_POOL_SIZE={pool_size()}")
-    if os.environ.get("BOT_BOTTLE_FC_IP_BASE"):
-        pairs.append(f"BOT_BOTTLE_FC_IP_BASE={ip_base()}")
-    if os.environ.get("BOT_BOTTLE_FC_IFACE_PREFIX"):
-        pairs.append(f"BOT_BOTTLE_FC_IFACE_PREFIX={IFACE_PREFIX}")
-    return " ".join(pairs)

bot_bottle/backend/firecracker/resolve_plan.py

@@ -1,47 +0,0 @@
-"""Prepare step for the Firecracker backend."""
-
-from __future__ import annotations
-
-from pathlib import Path
-
-from ...agent_provider import AgentProvisionPlan
-from ...egress import EgressPlan
-from ...env import ResolvedEnv
-from ...git_gate import GitGatePlan
-from ...manifest import Manifest
-from ...supervise import SupervisePlan
-from .. import BottleSpec
-from . import util
-from .bottle_plan import FirecrackerBottlePlan
-
-
-def preflight() -> None:
-    util.require_firecracker()
-
-
-def build_guest_env(resolved_env: ResolvedEnv) -> dict[str, str]:
-    return dict(resolved_env.literals)
-
-
-def resolve_plan(
-    spec: BottleSpec,
-    manifest: Manifest,
-    slug: str,
-    resolved_env: ResolvedEnv,
-    agent_provision_plan: AgentProvisionPlan,
-    egress_plan: EgressPlan,
-    supervise_plan: SupervisePlan | None,
-    git_gate_plan: GitGatePlan,
-    stage_dir: Path,
-) -> FirecrackerBottlePlan:
-    return FirecrackerBottlePlan(
-        spec=spec,
-        manifest=manifest,
-        stage_dir=stage_dir,
-        slug=slug,
-        forwarded_env=dict(resolved_env.forwarded),
-        git_gate_plan=git_gate_plan,
-        egress_plan=egress_plan,
-        supervise_plan=supervise_plan,
-        agent_provision=agent_provision_plan,
-    )

bot_bottle/backend/firecracker/setup.py

@@ -1,276 +0,0 @@
-"""Host setup + status for the Firecracker backend.
-
-`setup()` prints the host-appropriate config for the privileged,
-one-time network pool (TAP devices + isolation nftables table) the
-backend needs. On NixOS it points at the flake module (and prints a
-paste-able fallback); elsewhere it prints the sudo command for the
-bundled setup script. `status()` reports what's present, including
-whether the pool range collides with an existing route.
-
-Called through `FirecrackerBottleBackend.setup` / `.status`, which the
-generic `./cli.py backend {setup,status}` command dispatches to.
-"""
-
-from __future__ import annotations
-
-import os
-import shutil
-import subprocess
-import sys
-from pathlib import Path
-
-from . import netpool
-from . import util
-
-
-_FC_RELEASES = "https://github.com/firecracker-microvm/firecracker/releases"
-_UNIT_PATH = Path("/etc/systemd/system") / netpool.SYSTEMD_UNIT
-
-
-def _owner() -> str:
-    # Under `sudo`, USER is root but SUDO_USER is the real invoker — the
-    # TAPs must be owned by them so `./cli.py start` stays rootless.
-    return os.environ.get("SUDO_USER") or os.environ.get("USER") or "youruser"
-
-
-def _has_systemd() -> bool:
-    return Path("/run/systemd/system").is_dir()
-
-
-def _module_path() -> str:
-    """Absolute path to the importable NixOS module in this checkout."""
-    return str(Path(__file__).resolve().parents[3] / "nix" / "firecracker-netpool.nix")
-
-
-def _script_path() -> str:
-    """Absolute path to the bundled bring-up script in this checkout."""
-    return str(Path(__file__).resolve().parents[3] / "scripts" / "firecracker-netpool.sh")
-
-
-def _print_prereqs() -> None:
-    """The firecracker binary + KVM + guest artifacts, shown before the
-    privileged network-pool step so operators see the full picture."""
-    fc = shutil.which("firecracker")
-    if fc:
-        sys.stderr.write(f"1) firecracker binary: found ({fc}).\n")
-    else:
-        sys.stderr.write(
-            "1) firecracker binary: NOT found on PATH. Install a release binary "
-            "and put it on PATH:\n"
-            f"     {_FC_RELEASES}\n"
-            "   e.g.: download firecracker-vX.Y.Z-$(uname -m).tgz, extract, and\n"
-            "     install -m755 release-*/firecracker-* ~/.local/bin/firecracker\n"
-            "   (NixOS: not packaged as a user binary — fetch the release, pin\n"
-            "    the version, and add it to PATH.)\n"
-        )
-    if util.is_host_capable():
-        sys.stderr.write("   KVM: /dev/kvm present.\n")
-    else:
-        sys.stderr.write(
-            "   KVM: /dev/kvm missing/unusable — load kvm-intel/kvm-amd, enable\n"
-            "   virtualization in firmware, and add your user to the `kvm` group.\n"
-        )
-    sys.stderr.write(
-        "   Guest artifacts: a kernel (BOT_BOTTLE_FC_KERNEL) and static dropbear\n"
-        "   (BOT_BOTTLE_FC_DROPBEAR) must be cached, and `mke2fs` (e2fsprogs) is\n"
-        "   needed to build the rootfs.\n\n"
-    )
-
-
-def _is_nixos() -> bool:
-    if Path("/etc/NIXOS").exists():
-        return True
-    try:
-        return "ID=nixos" in Path("/etc/os-release").read_text()
-    except OSError:
-        return False
-
-
-def _warn_overlaps() -> None:
-    """Warn if the chosen pool range collides with an existing host route
-    (Tailscale CGNAT peer, a docker/libvirt bridge, the LAN…)."""
-    conflicts = netpool.overlapping_routes()
-    if not conflicts:
-        return
-    detail = "\n".join(f"    {c.dst} dev {c.dev}" for c in conflicts)
-    sys.stderr.write(
-        f"WARNING: pool range (base {netpool.ip_base()}, "
-        f"{netpool.pool_size()} slots) overlaps existing routes:\n"
-        f"{detail}\n"
-        "Set BOT_BOTTLE_FC_IP_BASE to a free range before setup, or the "
-        "pool may shadow / be shadowed by the above.\n\n"
-    )
-
-
-def setup() -> int:
-    sys.stderr.write("Firecracker backend — one-time host setup.\n\n")
-    _print_prereqs()
-    slots = netpool.all_slots()
-    sys.stderr.write(
-        f"2) network pool: {len(slots)} slots "
-        f"({slots[0].iface}..{slots[-1].iface}), base {netpool.ip_base()} — "
-        f"TAP devices + nft isolation table, privileged (needs root once).\n\n"
-    )
-    _warn_overlaps()
-    if _is_nixos():
-        sys.stderr.write(
-            "Detected NixOS. Import the module — it is NON-INVASIVE: it does "
-            "not flip networking.nftables.enable or systemd.network.enable, so "
-            "your existing (iptables) firewall and Docker are untouched. A "
-            "systemd oneshot brings the pool up alongside them.\n\n"
-            "  # flake users:\n"
-            "  inputs.bot-bottle.url = \"git+ssh://<your-bot-bottle-remote>\";\n"
-            "  imports = [ inputs.bot-bottle.nixosModules.firecracker-netpool ];\n"
-            "  # channel (non-flake) users — import the file directly:\n"
-            f"  imports = [ {_module_path()} ];\n\n"
-            f"  services.bot-bottle-firecracker = {{ enable = true; owner = \"{_owner()}\"; }};\n\n"
-            "Then `nixos-rebuild switch`.\n"
-        )
-    elif _has_systemd():
-        _setup_systemd()
-    else:
-        sys.stderr.write(
-            "No systemd detected. Run the one-time bring-up as root (and add "
-            "your own boot persistence — e.g. an OpenRC/runit service):\n\n"
-        )
-        sys.stdout.write(netpool.render_shell_setup() + "\n")
-    return 0
-
-
-def _setup_systemd() -> None:
-    """Install the pool as a persistent systemd unit — the portable path,
-    identical on every systemd distro. Performs the install directly when
-    run as root; otherwise prints a self-contained copy-paste block."""
-    unit = netpool.render_systemd_unit(_owner(), _script_path())
-    sys.stderr.write(
-        f"Persistent install (systemd — same on every systemd distro). Needs "
-        f"`nft` (nftables) and `ip` (iproute2); install via your package "
-        f"manager if `backend status` reports them missing.\n\n"
-    )
-    if os.geteuid() == 0:
-        _UNIT_PATH.write_text(unit)
-        subprocess.run(["systemctl", "daemon-reload"], check=False)
-        rc = subprocess.run(
-            ["systemctl", "enable", "--now", netpool.SYSTEMD_UNIT], check=False,
-        ).returncode
-        if rc == 0:
-            sys.stderr.write(
-                f"Installed and started {netpool.SYSTEMD_UNIT}. Verify with "
-                f"`./cli.py backend status --backend=firecracker`.\n"
-            )
-        else:
-            sys.stderr.write(
-                f"Wrote {_UNIT_PATH} but `systemctl enable --now` failed — "
-                f"check `systemctl status {netpool.SYSTEMD_UNIT}`.\n"
-            )
-        return
-    sys.stderr.write(
-        "Install the unit (one copy-paste; enables it on boot too):\n\n"
-    )
-    sys.stdout.write(
-        f"sudo tee {_UNIT_PATH} >/dev/null <<'UNIT'\n"
-        f"{unit}"
-        f"UNIT\n"
-        f"sudo systemctl daemon-reload\n"
-        f"sudo systemctl enable --now {netpool.SYSTEMD_UNIT}\n"
-    )
-    sys.stderr.write(
-        f"\n(Or re-run this as root to install it directly: "
-        f"sudo ./cli.py backend setup --backend=firecracker)\n"
-    )
-
-
-def teardown() -> int:
-    slots = netpool.all_slots()
-    sys.stderr.write(
-        f"Undo the Firecracker network pool ({len(slots)} slots, base "
-        f"{netpool.ip_base()}) — a privileged operation.\n\n"
-    )
-    if _is_nixos():
-        sys.stderr.write(
-            "On NixOS: set `services.bot-bottle-firecracker.enable = false;` "
-            "(or drop the module import) and `nixos-rebuild switch`. The TAP "
-            "netdevs and nft table are removed declaratively.\n\n"
-            "To tear down imperatively before a rebuild (does not persist):\n\n"
-        )
-        sys.stdout.write("sudo ./scripts/firecracker-netpool.sh down\n")
-        return 0
-    if _has_systemd():
-        if os.geteuid() == 0:
-            subprocess.run(
-                ["systemctl", "disable", "--now", netpool.SYSTEMD_UNIT],
-                check=False,
-            )
-            _UNIT_PATH.unlink(missing_ok=True)
-            subprocess.run(["systemctl", "daemon-reload"], check=False)
-            sys.stderr.write(
-                f"Stopped, disabled, and removed {netpool.SYSTEMD_UNIT}.\n"
-            )
-        else:
-            sys.stderr.write("Remove the persistent unit (one copy-paste):\n\n")
-            sys.stdout.write(
-                f"sudo systemctl disable --now {netpool.SYSTEMD_UNIT}\n"
-                f"sudo rm -f {_UNIT_PATH}\n"
-                f"sudo systemctl daemon-reload\n"
-            )
-        return 0
-    sys.stderr.write("Run the teardown as root:\n\n")
-    sys.stdout.write("sudo ./scripts/firecracker-netpool.sh down\n")
-    return 0
-
-
-def status() -> int:
-    # Readiness == what the launch preflight hard-requires: the TAP pool
-    # present (unprivileged, authoritative) and no range overlap. Listing
-    # the nft table usually needs root, so — like the preflight — an
-    # unconfirmable table is reported but NOT treated as not-ready; the
-    # post-boot isolation probe is the authoritative check. This keeps an
-    # unprivileged `backend status` usable as a launch gate.
-    ok = True
-    missing = netpool.missing_taps()
-    total = netpool.pool_size()
-    if missing:
-        sys.stderr.write(f"TAP pool: {total - len(missing)}/{total} present "
-                         f"(missing: {', '.join(missing)})\n")
-        ok = False
-    else:
-        sys.stderr.write(f"TAP pool: {total}/{total} present\n")
-    if shutil.which("nft") is None:
-        sys.stderr.write(f"nft table inet {netpool.NFT_TABLE}: unverified "
-                         f"(nft not on PATH; enforced + checked post-boot)\n")
-    elif netpool.nft_table_present():
-        sys.stderr.write(f"nft table inet {netpool.NFT_TABLE}: present\n")
-    else:
-        sys.stderr.write(f"nft table inet {netpool.NFT_TABLE}: not confirmable "
-                         f"unprivileged (listing needs root; verified post-boot)\n")
-    conflicts = netpool.overlapping_routes()
-    if conflicts:
-        detail = ", ".join(f"{c.dst} dev {c.dev}" for c in conflicts)
-        sys.stderr.write(f"range overlap: base {netpool.ip_base()} CLASHES "
-                         f"with {detail}\n")
-        ok = False
-    else:
-        sys.stderr.write(f"range overlap: none (base {netpool.ip_base()})\n")
-    _report_persistence()
-    if not ok:
-        sys.stderr.write("\nRun: ./cli.py backend setup --backend=firecracker\n")
-    return 0 if ok else 1
-
-
-def _report_persistence() -> None:
-    """Report whether the pool is installed as the persistent systemd
-    unit (so it survives reboot) vs brought up imperatively. Advisory —
-    doesn't affect launch readiness."""
-    if not _has_systemd():
-        return
-    state = subprocess.run(
-        ["systemctl", "is-active", netpool.SYSTEMD_UNIT],
-        capture_output=True, text=True, check=False,
-    ).stdout.strip() or "unknown"
-    if state == "active":
-        sys.stderr.write(f"persistence: {netpool.SYSTEMD_UNIT} active "
-                         f"(survives reboot)\n")
-    else:
-        sys.stderr.write(f"persistence: {netpool.SYSTEMD_UNIT} {state} — pool "
-                         f"is not installed as a persistent unit (install with "
-                         f"`backend setup` so it survives reboot)\n")

bot_bottle/backend/firecracker/util.py

@@ -1,323 +0,0 @@
-"""Host-side primitives for the Firecracker backend.
-
-Covers the pieces that don't need root at launch time: locating the
-firecracker binary / guest kernel / injected dropbear, the fail-closed
-preflight (KVM + kernel + isolation table + TAP pool must all be
-present before a VM boots), the rootless rootfs pipeline
-(`docker export` -> `mke2fs -d`, no mount), and per-bottle SSH key
-generation.
-
-The privileged network setup (TAP pool + nft table) is a one-time
-operator step — see `netpool.py`, `scripts/firecracker-netpool.sh`,
-and `./cli.py backend setup --backend=firecracker`.
-"""
-
-from __future__ import annotations
-
-import os
-import platform
-import shutil
-import subprocess
-from pathlib import Path
-
-from ...log import die, info, warn
-from . import netpool
-
-
-# Guest agent images are Debian-family with USER node; the VM is
-# reached over SSH as root (init drops the pubkey into both root's and
-# node's authorized_keys) and commands `runuser` down to node.
-GUEST_SSH_USER = "root"
-
-# `/dev/kvm` must exist and be openable by the invoking user.
-_KVM_DEVICE = "/dev/kvm"
-
-
-def cache_dir() -> Path:
-    d = Path(
-        os.environ.get(
-            "BOT_BOTTLE_FC_CACHE",
-            str(Path.home() / ".cache" / "bot-bottle" / "firecracker"),
-        )
-    )
-    d.mkdir(parents=True, exist_ok=True)
-    return d
-
-
-def kernel_path() -> Path:
-    return Path(os.environ.get("BOT_BOTTLE_FC_KERNEL", str(cache_dir() / "vmlinux")))
-
-
-def dropbear_path() -> Path:
-    """The static dropbear injected into every guest rootfs as its SSH
-    server. Must be statically linked — the guest has none of the
-    host's shared libraries."""
-    return Path(
-        os.environ.get("BOT_BOTTLE_FC_DROPBEAR", str(cache_dir() / "dropbear"))
-    )
-
-
-# --- availability + preflight ---------------------------------------
-
-def is_linux() -> bool:
-    return platform.system() == "Linux"
-
-
-def is_host_capable() -> bool:
-    """Whether this host *could* run firecracker — Linux with KVM —
-    regardless of whether the `firecracker` binary is installed. Used
-    for default-backend selection so a KVM Linux host that hasn't
-    installed firecracker yet still selects it and gets an install
-    pointer at launch (see `require_firecracker`), rather than silently
-    falling back to docker."""
-    return is_linux() and os.path.exists(_KVM_DEVICE)
-
-
-def is_available() -> bool:
-    """Cheap capability probe used by cross-backend enumeration —
-    firecracker on PATH, on Linux, with KVM. Does not check the
-    (operator-provisioned) kernel / pool, so an available-but-unset
-    host still shows up and gets an actionable error at launch."""
-    return is_host_capable() and shutil.which("firecracker") is not None
-
-
-def require_firecracker() -> None:
-    """Fail-closed preflight. Every check that gates the security
-    boundary (the isolation table, the TAP pool) errors rather than
-    booting a VM without it."""
-    if not is_linux():
-        die("firecracker backend is only supported on Linux (KVM). "
-            "On macOS use --backend=macos-container.")
-    if shutil.which("firecracker") is None:
-        info("Firecracker is required but was not found on PATH.")
-        info("Install: https://github.com/firecracker-microvm/firecracker/releases")
-        die("firecracker not found on PATH")
-    _require_kvm()
-    if not kernel_path().is_file():
-        die(f"guest kernel not found at {kernel_path()}. Set "
-            "BOT_BOTTLE_FC_KERNEL or place a vmlinux there.")
-    if not dropbear_path().is_file():
-        die(f"static dropbear not found at {dropbear_path()}. Set "
-            "BOT_BOTTLE_FC_DROPBEAR or cache one there.")
-    if shutil.which("mke2fs") is None:
-        die("mke2fs (e2fsprogs) not found — required to build guest rootfs")
-    _require_network_pool()
-
-
-def _require_kvm() -> None:
-    if not os.path.exists(_KVM_DEVICE):
-        die(f"{_KVM_DEVICE} is missing. Enable KVM (load kvm-intel/kvm-amd; "
-            "confirm virtualization is on in firmware).")
-    if not os.access(_KVM_DEVICE, os.R_OK | os.W_OK):
-        die(f"{_KVM_DEVICE} exists but is not accessible. Add your user to "
-            "the `kvm` group and re-login.")
-
-
-def _require_network_pool() -> None:
-    """Fail-closed on the parts we can check unprivileged; defer the
-    rest to the post-boot isolation probe.
-
-    The TAP pool is verified here (`ip link show` is unprivileged). The
-    nft table can only be *confirmed present* here when `nft` is
-    queryable — which usually needs root — so a missing/absent nft is
-    not treated as fatal at this stage: the authoritative check is the
-    empirical isolation probe run after boot, before the agent starts
-    (see isolation_probe.verify_isolation). What we must never do is
-    boot without the TAP pool."""
-    conflicts = netpool.overlapping_routes()
-    if conflicts:
-        detail = "; ".join(f"{c.dst} dev {c.dev}" for c in conflicts)
-        warn(f"Firecracker pool range ({netpool.ip_base()}, "
-             f"{netpool.pool_size()} slots) overlaps existing routes: "
-             f"{detail}. This can shadow or be shadowed by that route; "
-             f"set BOT_BOTTLE_FC_IP_BASE to a free range and re-run "
-             f"./cli.py backend setup --backend=firecracker.")
-    missing = netpool.missing_taps()
-    if missing:
-        die(f"network pool incomplete — missing TAP devices: "
-            f"{', '.join(missing)}.\n    ./cli.py backend setup --backend=firecracker")
-    if shutil.which("nft") is not None and not netpool.nft_table_present():
-        # nft is queryable and says the table is absent — that's a
-        # definite, catchable misconfiguration; fail early.
-        warn(f"isolation table `inet {netpool.NFT_TABLE}` not found via nft. "
-             "If this is a permissions issue it will be re-checked "
-             "empirically after boot; otherwise run: "
-             "./cli.py backend setup --backend=firecracker")
-
-
-# --- rootfs pipeline (rootless) -------------------------------------
-
-def docker_image_id(ref: str) -> str:
-    """The image's content digest, used as the rootfs cache key."""
-    result = subprocess.run(
-        ["docker", "image", "inspect", "--format", "{{.Id}}", ref],
-        capture_output=True, text=True, check=False,
-    )
-    if result.returncode != 0 or not result.stdout.strip():
-        die(f"docker image inspect for {ref!r} failed: "
-            f"{(result.stderr or '').strip() or '<no output>'}")
-    return result.stdout.strip().replace("sha256:", "")[:16]
-
-
-def build_base_rootfs_dir(image_ref: str) -> Path:
-    """Export the agent image's filesystem and inject the guest init +
-    static dropbear. Cached by image digest — the per-bottle bits
-    (authorized_keys, IP) are passed at boot via the kernel cmdline, so
-    this tree carries nothing bottle-specific and is safely shared.
-
-    Returns the prepared directory (read as the `mke2fs -d` source)."""
-    digest = docker_image_id(image_ref)
-    base = cache_dir() / "rootfs" / digest
-    ready = base / ".bb-ready"
-    if ready.is_file():
-        return base
-
-    if base.exists():
-        shutil.rmtree(base, ignore_errors=True)
-    base.mkdir(parents=True)
-
-    info(f"exporting {image_ref} rootfs -> {base}")
-    cid = subprocess.run(
-        ["docker", "create", image_ref, "sleep", "infinity"],
-        capture_output=True, text=True, check=False,
-    )
-    if cid.returncode != 0 or not cid.stdout.strip():
-        die(f"docker create {image_ref!r} failed: {cid.stderr.strip()}")
-    container = cid.stdout.strip()
-    try:
-        export = subprocess.Popen(
-            ["docker", "export", container], stdout=subprocess.PIPE,
-        )
-        untar = subprocess.run(
-            ["tar", "-x", "-C", str(base)], stdin=export.stdout, check=False,
-        )
-        export.wait()
-        if export.returncode != 0 or untar.returncode != 0:
-            die(f"exporting rootfs for {image_ref!r} failed")
-    finally:
-        subprocess.run(
-            ["docker", "rm", "-f", container],
-            stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, check=False,
-        )
-
-    _inject_guest_boot(base)
-    ready.write_text("ok\n")
-    return base
-
-
-def _inject_guest_boot(rootfs: Path) -> None:
-    """Drop the static dropbear and the PID-1 init into the rootfs."""
-    shutil.copy2(dropbear_path(), rootfs / "bb-dropbear")
-    os.chmod(rootfs / "bb-dropbear", 0o755)
-    init = rootfs / "bb-init"
-    init.write_text(_GUEST_INIT)
-    os.chmod(init, 0o755)
-
-
-def build_rootfs_ext4(base_dir: Path, out_path: Path, *, slack_mib: int = 1024) -> None:
-    """Build a fresh, writable ext4 for one bottle from the cached base
-    dir. Rootless: `mke2fs -d` populates the image from a directory
-    without mounting. Each call produces an independent disk, so the
-    shared base dir stays untouched and concurrent bottles don't race."""
-    used_mib = _dir_size_mib(base_dir)
-    size_mib = used_mib + slack_mib
-    out_path.parent.mkdir(parents=True, exist_ok=True)
-    result = subprocess.run(
-        ["mke2fs", "-q", "-t", "ext4", "-d", str(base_dir), "-F",
-         str(out_path), f"{size_mib}M"],
-        capture_output=True, text=True, check=False,
-    )
-    if result.returncode != 0:
-        die(f"mke2fs for {out_path} failed: {result.stderr.strip()}")
-
-
-def _dir_size_mib(path: Path) -> int:
-    result = subprocess.run(
-        ["du", "-sm", str(path)], capture_output=True, text=True, check=False,
-    )
-    try:
-        return int(result.stdout.split()[0])
-    except (ValueError, IndexError):
-        return 2048
-
-
-# --- per-bottle SSH keys --------------------------------------------
-
-def generate_keypair(dest_dir: Path) -> tuple[Path, str]:
-    """Mint a per-bottle ed25519 keypair. Returns (private_key_path,
-    public_key_line). The public line is injected into the guest via
-    the boot cmdline; the private key authenticates host->guest SSH."""
-    dest_dir.mkdir(parents=True, exist_ok=True)
-    key = dest_dir / "bottle_id_ed25519"
-    if key.exists():
-        key.unlink()
-    (dest_dir / "bottle_id_ed25519.pub").unlink(missing_ok=True)
-    subprocess.run(
-        ["ssh-keygen", "-t", "ed25519", "-N", "", "-q", "-f", str(key),
-         "-C", "bot-bottle-firecracker"],
-        check=True,
-    )
-    pub = (dest_dir / "bottle_id_ed25519.pub").read_text().strip()
-    return key, pub
-
-
-def ssh_base_argv(private_key: Path, guest_ip: str) -> list[str]:
-    """Common SSH options for host->guest control. The VM is ephemeral
-    and per-bottle, so host-key TOFU is meaningless — pin no known_hosts
-    and skip the check rather than accumulate churn."""
-    return [
-        "ssh",
-        "-i", str(private_key),
-        # Only offer the per-bottle key — don't let an agent or the
-        # operator's ~/.ssh/config inject other identities (newer
-        # OpenSSH otherwise may not reliably present the -i key).
-        "-o", "IdentitiesOnly=yes",
-        "-o", "StrictHostKeyChecking=no",
-        "-o", "UserKnownHostsFile=/dev/null",
-        "-o", "LogLevel=ERROR",
-        "-o", "ConnectTimeout=5",
-        f"{GUEST_SSH_USER}@{guest_ip}",
-    ]
-
-
-# PID-1 init injected into every guest. Kept dependency-light: relies
-# only on coreutils + a POSIX shell (present in the Debian-family agent
-# images). The kernel `ip=` cmdline configures eth0 before init runs,
-# so no iproute2 is needed. The per-bottle SSH pubkey arrives base64 on
-# the cmdline; dropbear generates ephemeral host keys with -R.
-_GUEST_INIT = r"""#!/bin/sh
-# bot-bottle Firecracker guest init (PID 1).
-mount -t proc proc /proc 2>/dev/null
-mount -t sysfs sys /sys 2>/dev/null
-mount -t devtmpfs dev /dev 2>/dev/null
-mkdir -p /dev/pts && mount -t devpts devpts /dev/pts 2>/dev/null
-mount -o remount,rw / 2>/dev/null
-
-# Install the per-bottle SSH pubkey from the kernel cmdline.
-KEY=$(sed -n 's/.*bb_pubkey=\([^ ]*\).*/\1/p' /proc/cmdline | base64 -d 2>/dev/null)
-if [ -n "$KEY" ]; then
-    for home in /root /home/node; do
-        mkdir -p "$home/.ssh"
-        printf '%s\n' "$KEY" > "$home/.ssh/authorized_keys"
-        chmod 700 "$home/.ssh"
-        chmod 600 "$home/.ssh/authorized_keys"
-    done
-    chown -R node:node /home/node/.ssh 2>/dev/null || true
-fi
-
-# The rootless rootfs build (`docker export | tar` as a non-root user)
-# can't preserve uid 0, so every path lands owned by the build uid,
-# which maps to `node` (uid 1000) in-guest — including /root. dropbear
-# (like OpenSSH) refuses root's authorized_keys unless the home dir is
-# owned by root, so restore root's ownership of its own home.
-chown -R 0:0 /root 2>/dev/null || true
-
-mkdir -p /etc/dropbear /run
-# -R: generate host keys on demand. -E: log auth failures to stderr,
-# captured in the host-side console.log for debugging.
-/bb-dropbear -R -E -p 22 &
-
-# Reap zombies as PID 1. dropbear is always a child, so `wait` blocks
-# rather than busy-looping.
-while : ; do wait ; done
-"""

bot_bottle/backend/freeze.py

@@ -16,7 +16,7 @@ from __future__ import annotations
 from abc import ABC, abstractmethod
 
 from . import ActiveAgent
-from ..bottle_state import mark_preserved, write_committed_image
+from ..bottle.state import mark_preserved, write_committed_image
 from ..log import die, info
 
 
@@ -66,7 +66,7 @@ class Freezer(ABC):
 
     def commit_slug(self, slug: str) -> None:
         """Convenience entry for cmd_commit when only a slug is available."""
-        from ..bottle_state import read_metadata
+        from ..bottle.state import read_metadata
         metadata = read_metadata(slug)
         agent = ActiveAgent(
             backend_name=self.backend_name,
@@ -90,11 +90,11 @@ def get_freezer(backend_name: str) -> Freezer:
     if resolved == "macos-container":
         from .macos_container.freezer import MacosContainerFreezer
         return MacosContainerFreezer()
-    if resolved == "firecracker":
-        from .firecracker.freezer import FirecrackerFreezer
-        return FirecrackerFreezer()
+    if resolved == "smolmachines":
+        from .smolmachines.freezer import SmolmachinesFreezer
+        return SmolmachinesFreezer()
     die(
         f"commit is only supported for docker, macos-container, and "
-        f"firecracker; backend {backend_name!r} has no freezer"
+        f"smolmachines; backend {backend_name!r} has no freezer"
     )
     raise AssertionError("unreachable")

bot_bottle/backend/macos_container/backend.py

@@ -36,21 +36,6 @@ class MacosContainerBottleBackend(
     def is_available(cls) -> bool:
         return _container.is_available()
 
-    @classmethod
-    def setup(cls) -> int:
-        from . import setup as _setup
-        return _setup.setup()
-
-    @classmethod
-    def status(cls) -> int:
-        from . import setup as _setup
-        return _setup.status()
-
-    @classmethod
-    def teardown(cls) -> int:
-        from . import setup as _setup
-        return _setup.teardown()
-
     def _preflight(self) -> None:
         _resolve_plan.preflight()
 

bot_bottle/backend/macos_container/enumerate.py

@@ -4,7 +4,7 @@ from __future__ import annotations
 
 import subprocess
 
-from ...bottle_state import read_metadata
+from ...bottle.state import read_metadata
 from .. import ActiveAgent
 
 _PREFIX = "bot-bottle-"

bot_bottle/backend/macos_container/launch.py

@@ -17,7 +17,7 @@ from contextlib import ExitStack, contextmanager
 from pathlib import Path
 from typing import Callable, Generator
 
-from ...bottle_state import (
+from ...bottle.state import (
     egress_state_dir,
     git_gate_state_dir,
     read_committed_image,

bot_bottle/backend/macos_container/setup.py

@@ -1,79 +0,0 @@
-"""Host setup + status for the macOS Apple Container backend.
-
-Like Docker, this backend needs no privileged network-pool provisioning
-— it wants Apple's `container` CLI installed and its system service
-running. `setup()` points at the install/`container system start` steps;
-`status()` reports readiness. Reached via
-`MacosContainerBottleBackend.setup` / `.status`, dispatched from the
-generic `./cli.py backend {setup,status}`.
-"""
-
-from __future__ import annotations
-
-import shutil
-import subprocess
-import sys
-
-from . import util as _container
-
-
-def _service_running() -> bool:
-    if shutil.which("container") is None:
-        return False
-    return subprocess.run(
-        ["container", "system", "status"],
-        stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, check=False,
-    ).returncode == 0
-
-
-def setup() -> int:
-    if not _container.is_macos():
-        sys.stderr.write("macos-container backend requires macOS.\n")
-        return 1
-    if shutil.which("container") is None:
-        sys.stderr.write("Apple Container is required but was not found on PATH.\n")
-        sys.stderr.write("Install: https://github.com/apple/container/releases\n")
-        return 1
-    if not _service_running():
-        sys.stderr.write(
-            "Apple Container is installed but its system service isn't "
-            "running. Start it with: container system start\n"
-        )
-        return 1
-    sys.stderr.write(
-        "macos-container backend: ready — no privileged host setup required.\n"
-    )
-    return 0
-
-
-def teardown() -> int:
-    sys.stderr.write(
-        "macos-container backend: nothing to undo — it provisions no "
-        "privileged host state. The Apple Container CLI and its system "
-        "service are left as-is (stop the service yourself with "
-        "`container system stop` if you want).\n"
-    )
-    return 0
-
-
-def status() -> int:
-    ok = True
-    if _container.is_macos():
-        sys.stderr.write("host: macOS\n")
-    else:
-        sys.stderr.write("host: NOT macOS (backend unsupported here)\n")
-        ok = False
-    if shutil.which("container") is not None:
-        sys.stderr.write("container CLI on PATH: yes\n")
-    else:
-        sys.stderr.write("container CLI on PATH: NO\n")
-        ok = False
-    if ok:
-        sys.stderr.write(
-            f"container system service: {'running' if _service_running() else 'NOT running'}\n"
-        )
-        if not _service_running():
-            ok = False
-    if not ok:
-        sys.stderr.write("\nRun: ./cli.py backend setup --backend=macos-container\n")
-    return 0 if ok else 1

bot_bottle/backend/print_util.py

@@ -1,8 +1,9 @@
 """Shared print helpers for BottlePlan.print implementations.
 
-Lifts the multi-value label printer out of DockerBottlePlan so every
-backend (and any future backend) renders the same two-column
-scannable preflight without duplicating the indent math."""
+Lifts the multi-value label printer out of DockerBottlePlan so the
+smolmachines backend (and any future backend) renders the same
+two-column scannable preflight without duplicating the indent
+math."""
 
 from __future__ import annotations
 

bot_bottle/backend/resolve_common.py

@@ -1,7 +1,7 @@
-"""Shared helpers used across backends' resolve_plan steps.
+"""Shared helpers used by both backends' resolve_plan steps.
 
 Each helper owns one well-defined step of the per-bottle plan
-resolution so the backends don't repeat the same logic.
+resolution so docker and smolmachines don't repeat the same logic.
 Backend-specific steps (container names, env-file, per-bottle
 Dockerfile overrides, subnet allocation) stay in the backend's own
 resolve_plan.py.
@@ -15,7 +15,7 @@ from datetime import datetime, timezone
 from pathlib import Path
 
 from ..agent_provider import AgentProvisionPlan
-from ..bottle_state import (
+from ..bottle.state import (
     BottleMetadata,
     agent_state_dir,
     bottle_identity,

bot_bottle/backend/smolmachines/__init__.py

@@ -0,0 +1,15 @@
+"""smolmachines bottle backend (PRD 0023).
+
+Selectable via `BOT_BOTTLE_BACKEND=smolmachines`. Runs each
+bottle inside a per-agent microVM (libkrun / Hypervisor.framework
+on macOS) with a userspace gvproxy gateway as the egress
+primitive. The sidecar bundle (PRD 0024) runs as a host-side
+docker container reached only through gvproxy's port-forward list.
+
+Chunk 1 (this commit) ships the backend skeleton + Smolfile +
+gvproxy renderers + preflight check. VM lifecycle, sidecar
+bringup, and provisioning land in later chunks."""
+
+from .backend import SmolmachinesBottleBackend  # noqa: F401
+
+__all__ = ["SmolmachinesBottleBackend"]

bot_bottle/backend/smolmachines/backend.py

@@ -1,10 +1,11 @@
-"""FirecrackerBottleBackend — Linux microVM implementation.
+"""SmolmachinesBottleBackend — the smolmachines implementation of
+BottleBackend (PRD 0023).
 
-Replaces smolmachines on Linux (issue #342): mature KVM-based
-isolation via Firecracker, SSH control over a point-to-point TAP, and a
-fail-closed nftables egress boundary. Selected by
-`BOT_BOTTLE_BACKEND=firecracker` or `--backend=firecracker`.
-"""
+Per PRD 0050 the per-provider provisioning steps (prompt, skills,
+the declarative provision-plan apply, supervise MCP registration)
+live on the `AgentProvider` plugin under `bot_bottle/contrib/`. The
+smolmachines backend only owns the steps that are about backend
+infrastructure: CA install (no-op for now), workspace, git copy-in."""
 
 from __future__ import annotations
 
@@ -16,50 +17,34 @@ from ...agent_provider import AgentProvisionPlan
 from ...egress import EgressPlan
 from ...env import ResolvedEnv
 from ...git_gate import GitGatePlan
-from ...manifest import Manifest
 from ...supervise import SupervisePlan
+from ...manifest import Manifest
 from .. import ActiveAgent, BottleBackend, BottleSpec
 from . import cleanup as _cleanup
 from . import enumerate as _enumerate
 from . import launch as _launch
 from . import resolve_plan as _resolve_plan
-from . import util as _util
-from .bottle import FirecrackerBottle
-from .bottle_cleanup_plan import FirecrackerBottleCleanupPlan
-from .bottle_plan import FirecrackerBottlePlan
+from . import smolvm as _smolvm
+from .bottle import SmolmachinesBottle
+from .bottle_cleanup_plan import SmolmachinesBottleCleanupPlan
+from .bottle_plan import SmolmachinesBottlePlan
 
 
-class FirecrackerBottleBackend(
-    BottleBackend["FirecrackerBottlePlan", "FirecrackerBottleCleanupPlan"]
+class SmolmachinesBottleBackend(
+    BottleBackend["SmolmachinesBottlePlan", "SmolmachinesBottleCleanupPlan"]
 ):
-    name = "firecracker"
+    """smolmachines backend. Selected by
+    `BOT_BOTTLE_BACKEND=smolmachines`."""
+
+    name = "smolmachines"
 
     @classmethod
     def is_available(cls) -> bool:
-        return _util.is_available()
-
-    @classmethod
-    def is_host_capable(cls) -> bool:
-        """Linux + KVM, regardless of whether the `firecracker` binary
-        is installed. Drives default-backend selection so a capable host
-        without the binary still lands on firecracker and gets an
-        install pointer at launch."""
-        return _util.is_host_capable()
-
-    @classmethod
-    def setup(cls) -> int:
-        from . import setup as _setup
-        return _setup.setup()
-
-    @classmethod
-    def status(cls) -> int:
-        from . import setup as _setup
-        return _setup.status()
-
-    @classmethod
-    def teardown(cls) -> int:
-        from . import setup as _setup
-        return _setup.teardown()
+        """`smolvm` on PATH. The backend additionally needs macOS
+        for libkrun + TSI, but `enumerate_active` / `cleanup` are
+        host-shell ops that gracefully no-op on Linux too — the
+        runtime check happens at `prepare`."""
+        return _smolvm.is_available()
 
     def _preflight(self) -> None:
         _resolve_plan.preflight()
@@ -79,7 +64,7 @@ class FirecrackerBottleBackend(
         git_gate_plan: GitGatePlan,
         supervise_plan: SupervisePlan | None,
         stage_dir: Path,
-    ) -> FirecrackerBottlePlan:
+    ) -> SmolmachinesBottlePlan:
         return _resolve_plan.resolve_plan(
             spec,
             manifest=manifest,
@@ -94,19 +79,23 @@ class FirecrackerBottleBackend(
 
     @contextmanager
     def launch(
-        self, plan: FirecrackerBottlePlan
-    ) -> Generator[FirecrackerBottle, None, None]:
+        self, plan: SmolmachinesBottlePlan
+    ) -> Generator[SmolmachinesBottle, None, None]:
         with _launch.launch(plan, provision=self.provision) as bottle:
             yield bottle
 
-    def prepare_cleanup(self) -> FirecrackerBottleCleanupPlan:
+    def supervise_mcp_url(self, plan: SmolmachinesBottlePlan) -> str:
+        """The smolmachines guest reaches the supervise sidecar via a
+        host-published random port the launch step pinned earlier
+        (`http://<loopback_ip>:<random_port>/`). `agent_supervise_url`
+        on the plan is "" when the bottle has no sidecar."""
+        return plan.agent_supervise_url
+
+    def prepare_cleanup(self) -> SmolmachinesBottleCleanupPlan:
         return _cleanup.prepare_cleanup()
 
-    def cleanup(self, plan: FirecrackerBottleCleanupPlan) -> None:
+    def cleanup(self, plan: SmolmachinesBottleCleanupPlan) -> None:
         _cleanup.cleanup(plan)
 
     def enumerate_active(self) -> Sequence[ActiveAgent]:
         return _enumerate.enumerate_active()
-
-    def supervise_mcp_url(self, plan: FirecrackerBottlePlan) -> str:
-        return plan.agent_supervise_url

bot_bottle/backend/smolmachines/bottle.py

@@ -0,0 +1,217 @@
+"""SmolmachinesBottle — running-instance handle (PRD 0023 chunk 2d).
+
+Routes `exec_agent` / `exec` / `cp_in` through `smolvm machine
+exec` / `smolvm machine cp`. The handle is yielded by `launch`
+and torn down via the surrounding ExitStack on context exit;
+`close` is a no-op idempotent alias so the BottleBackend ABC's
+context-manager contract is satisfied.
+
+User context: `smolvm machine exec` runs commands as root in the
+VM, but the agent image's USER is `node` and agent CLIs may refuse
+to run as root in bypass modes. Both
+`exec_agent` and `exec` switch to the requested user (default
+`node`) via `runuser -u <user> --` and set `HOME` / `USER`
+through `smolvm -e` — avoiding `runuser -l`'s login-shell wiring
+(PAM session setup, /etc/profile sourcing) which can hang on a
+minimal Debian VM with no PAM session config."""
+
+from __future__ import annotations
+
+import subprocess
+import sys
+import time
+import shlex
+from typing import Mapping, cast
+
+from ...agent_provider import PromptMode, prompt_args
+from .. import Bottle, ExecResult
+from ..terminal import exec_shell_script
+from . import pty_resize as _pty_resize
+from . import smolvm as _smolvm
+
+
+# Absolute path to the pty_resize wrapper. Invoke as
+# `python <path>` rather than `python -m <dotted-path>` so the
+# wrapper runs regardless of cwd / sys.path — it has no
+# bot_bottle.* imports, so it's self-contained.
+_PTY_RESIZE_SCRIPT = _pty_resize.__file__
+
+
+# Per-user env the agent image's USER (node) expects. Some providers
+# write session state under the user's home directory;
+# bare `runuser -u` inherits root's HOME=/root, which claude
+# can't write to. Set HOME / USER explicitly through smolvm -e
+# so the child process sees them.
+_HOME_FOR = {
+    "node": "/home/node",
+    "root": "/root",
+}
+
+_DEFAULT_PATH_FOR = {
+    # Committed smolmachine snapshots are rebuilt from a rootfs tarball and
+    # lose Docker image ENV metadata. Restore the provider CLI path here so
+    # resumed Codex bottles can still find the per-user install.
+    "node": (
+        "/home/node/.local/bin:"
+        "/home/node/.codex/packages/standalone/current/bin:"
+        "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
+    ),
+    "root": "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
+}
+
+
+def _env_assignments_for(user: str, env: Mapping[str, str]) -> list[str]:
+    home = _HOME_FOR.get(user, f"/home/{user}")
+    out = [f"HOME={home}", f"USER={user}"]
+    if "PATH" not in env:
+        out.append(f"PATH={_DEFAULT_PATH_FOR.get(user, _DEFAULT_PATH_FOR['root'])}")
+    for k, v in env.items():
+        out.append(f"{k}={v}")
+    return out
+
+
+class SmolmachinesBottle(Bottle):
+    """Handle returned by `SmolmachinesBottleBackend.launch`. The
+    underlying VM lifecycle (create / start / stop / delete) lives
+    on the launch ExitStack — this class only routes runtime
+    operations to the right `smolvm machine ...` subcommand."""
+
+    def __init__(
+        self,
+        machine_name: str,
+        *,
+        prompt_path: str | None = None,
+        guest_env: Mapping[str, str] | None = None,
+        agent_command: str = "claude",
+        agent_prompt_mode: PromptMode = "append_file",
+        agent_provider_template: str = "claude",
+        terminal_title: str = "",
+        terminal_color: str = "",
+        agent_workdir: str = "/home/node",
+    ) -> None:
+        self.name = machine_name
+        # In-VM path to the agent's prompt file. None when the
+        # agent declared no prompt (file still exists; we just
+        # don't pass --append-system-prompt-file).
+        self.prompt_path = prompt_path
+        # Env vars the agent process needs (HTTPS_PROXY,
+        # CLAUDE_CODE_OAUTH_TOKEN, manifest-declared bottle env, …).
+        # Forwarded on every `smolvm machine exec` via `-e K=V`
+        # because exec doesn't inherit from machine_create's env.
+        self._guest_env = dict(guest_env or {})
+        self._agent_prompt_mode = agent_prompt_mode
+        self.agent_command = agent_command
+        self.terminal_title = terminal_title
+        self.terminal_color = terminal_color
+        self.agent_provider_template = agent_provider_template
+        self.agent_workdir = agent_workdir
+
+    def agent_argv(
+        self, argv: list[str], *, tty: bool = True,
+    ) -> list[str]:
+        flags = ["smolvm", "machine", "exec", "--name", self.name]
+        if tty:
+            flags += ["-i", "-t"]
+        agent_tail = ["env", *_env_assignments_for("node", self._guest_env)]
+        if self.agent_workdir and self.agent_workdir != _HOME_FOR["node"]:
+            agent_tail += [
+                "sh", "-lc",
+                f"cd {shlex.quote(self.agent_workdir)} && exec \"$@\"",
+                "bot-bottle-agent",
+            ]
+        agent_tail.append(self.agent_command)
+        provider_prompt_args = prompt_args(
+            cast(PromptMode, self._agent_prompt_mode), self.prompt_path, argv=argv,
+        )
+        if cast(PromptMode, self._agent_prompt_mode) == "read_prompt_file":
+            agent_tail += argv
+            agent_tail += provider_prompt_args
+        else:
+            agent_tail += provider_prompt_args
+            agent_tail += argv
+        flags += ["--", "runuser", "-u", "node", "--", *agent_tail]
+        if not tty:
+            # No PTY allocated — no SIGWINCH to forward, no resize
+            # bridge needed. Skip the wrapper so non-interactive
+            # exec paths (e.g., provisioning shell-outs that
+            # happen to go through this method) stay light.
+            return flags
+        return [
+            sys.executable, _PTY_RESIZE_SCRIPT,
+            self.name, "--", *flags,
+        ]
+
+    def exec_agent(self, argv: list[str], *, tty: bool = True) -> int:
+        """Run the selected agent interactively inside the VM as the `node`
+        user. Inherits the operator's terminal (stdin / stdout /
+        stderr) so the session feels native. Blocks until the agent
+        exits; returns the in-VM exit code.
+
+        We bypass the captured-output `machine_exec` helper here
+        because that one wraps stdout/stderr in pipes — fine for
+        scripted exec, wrong for an interactive shell. Drop down
+        to `subprocess.run` with the TTY inherited.
+
+        UID switches via `runuser -u node --` (not `-l`) so we
+        avoid login-shell wiring. HOME / USER come from `smolvm
+        -e` instead, which sets them on the process env."""
+        agent_argv = self.agent_argv(argv, tty=tty)
+        script = exec_shell_script(agent_argv, self.terminal_title, self.terminal_color) if tty else None
+        if script is None:
+            return subprocess.run(agent_argv, check=False).returncode
+        # Use sh -c (not -lc) so the script inherits PATH from the calling
+        # process. sh -l sources login-shell init files (e.g. /etc/profile)
+        # which may NOT include smolvm's location when it was installed via
+        # homebrew. The calling process (./cli.py) already has smolvm on PATH
+        # (provision steps succeed), so -c is sufficient.
+        return subprocess.run(["sh", "-c", script], check=False).returncode
+
+    # smolvm/libkrun can SIGKILL an otherwise-normal exec during
+    # early-VM provisioning. Retry once after a short settle so
+    # callers (provision_ca, etc.) don't have to handle it themselves.
+    _SIGKILL_EXIT = 128 + 9
+
+    def exec(self, script: str, *, user: str = "node") -> ExecResult:
+        """Run a POSIX shell script as `user` (default `node`) and
+        capture the result. Matches the docker backend's `exec`,
+        which defaults to the image's USER (also node) — so test
+        helpers / provision shell-outs run with the same identity
+        on both backends. Pass `user="root"` for tests that need
+        root.
+
+        `runuser -u <user> -- env ... /bin/sh -c <script>` switches UID
+        without invoking a login shell, then sets HOME / USER and the
+        bottle env in the child process.
+
+        Retries once on SIGKILL (exit 137) — libkrun occasionally
+        kills short-lived execs during VM bring-up."""
+        r = self._exec_raw(script, user=user)
+        if r.returncode == self._SIGKILL_EXIT:
+            time.sleep(1.0)
+            r = self._exec_raw(script, user=user)
+        return r
+
+    def _exec_raw(self, script: str, *, user: str = "node") -> ExecResult:
+        argv = [
+            "--", "runuser", "-u", user, "--",
+            "env", *_env_assignments_for(user, self._guest_env),
+            "/bin/sh", "-c", script,
+        ]
+        r = subprocess.run(
+            ["smolvm", "machine", "exec", "--name", self.name] + argv,
+            capture_output=True, text=True, check=False,
+        )
+        return ExecResult(
+            returncode=r.returncode,
+            stdout=r.stdout or "",
+            stderr=r.stderr or "",
+        )
+
+    def cp_in(self, host_path: str, container_path: str) -> None:
+        """Copy a host path into the guest at `container_path`."""
+        _smolvm.machine_cp(host_path, f"{self.name}:{container_path}")
+
+    def close(self) -> None:
+        # Real teardown lives on the launch ExitStack; this is just
+        # the idempotent alias the BottleBackend ABC expects.
+        pass

bot_bottle/backend/smolmachines/bottle_cleanup_plan.py

@@ -0,0 +1,55 @@
+"""SmolmachinesBottleCleanupPlan — concrete BottleCleanupPlan (issue #77).
+
+Tracks the resources `SmolmachinesBottleBackend.cleanup` will
+remove:
+
+  - machines:  smolvm machines whose name starts with
+               `bot-bottle-` (running or stopped). Stopped +
+               deleted via `smolvm machine stop` + `machine delete -f`.
+  - bundles:   docker containers `bot-bottle-sidecars-<slug>`
+               left over from a smolmachines bottle (the bundle's
+               port-forwards stay published on lo0 aliases until
+               the container is gone). Removed via `docker rm -f`.
+  - networks:  docker networks `bot-bottle-bundle-<slug>`
+               attached to the bundles. Removed via
+               `docker network rm`.
+
+Smolmachines state dirs live under the same `~/.bot-bottle/state/`
+path the docker backend uses; the docker backend's
+`prepare_cleanup` already enumerates orphan state dirs and is the
+single source of truth for that bucket (consults
+`enumerate_active_bottles()` so it doesn't reap a live
+smolmachines bottle's dir)."""
+
+from __future__ import annotations
+
+import sys
+from dataclasses import dataclass
+
+from ...log import info
+from .. import BottleCleanupPlan
+
+
+@dataclass(frozen=True)
+class SmolmachinesBottleCleanupPlan(BottleCleanupPlan):
+    """Resources SmolmachinesBottleBackend.cleanup will remove.
+    Produced by `prepare_cleanup`; sorted so the y/N output is
+    stable."""
+
+    machines: tuple[str, ...] = ()
+    bundles: tuple[str, ...] = ()
+    networks: tuple[str, ...] = ()
+
+    @property
+    def empty(self) -> bool:
+        return not self.machines and not self.bundles and not self.networks
+
+    def print(self) -> None:
+        print(file=sys.stderr)
+        for name in self.machines:
+            info(f"smolvm machine:  {name}")
+        for name in self.bundles:
+            info(f"bundle container:{name}")
+        for name in self.networks:
+            info(f"bundle network:  {name}")
+        print(file=sys.stderr)

bot_bottle/backend/smolmachines/bottle_plan.py

@@ -0,0 +1,109 @@
+"""SmolmachinesBottlePlan — concrete BottlePlan for the smolmachines
+backend (PRD 0023).
+
+Slug + bundle docker subnet / gateway / pinned IP + smolvm
+machine name + agent `.smolmachine` artifact + per-bottle guest
+env. Provisioning fields (CA cert path, prompt path, etc.) land
+in chunk 4."""
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+from pathlib import Path
+
+from ...agent_provider import PromptMode
+from .. import BottlePlan
+
+
+@dataclass(frozen=True)
+class SmolmachinesBottlePlan(BottlePlan):
+    """Resolved fields the launch step needs to bring up the bottle.
+
+    Inherits `spec`, `stage_dir`, `git_gate_plan`, `egress_plan`,
+    `supervise_plan`, and `agent_provision` from BottlePlan."""
+
+    slug: str
+    # Per-bottle docker subnet for the sidecar bundle container.
+    # The bundle runs at `bundle_ip` (always `.2`); the gateway is
+    # at `.1`. smolvm's TSI allowlist is set to `bundle_ip/32`.
+    bundle_subnet: str
+    bundle_gateway: str
+    bundle_ip: str
+    # In-guest env vars (HTTPS_PROXY etc) — IP-literal URLs since
+    # the guest has no DNS resolver inside the TSI allowlist.
+    # Passed to `smolvm machine create` as `-e K=V` flags.
+    # Smolfile-rendering is gone (smolvm 0.8.0's
+    # `--smolfile` is mutually exclusive with `--from`, and
+    # `--from` is the path that avoids the registry-pull race).
+    guest_env: dict[str, str]
+    # Inner Plans for the sidecar bundle daemons. The same shape the
+    # docker backend uses — same `.prepare()` calls produced
+    # them — but our launch step doesn't populate the
+    # docker-specific network fields (internal_network,
+    # egress_network) because the smolmachines bundle isn't on
+    # docker's `--internal` + egress bridge topology; it's on a
+    # per-bottle bridge with a pinned IP. The unused fields stay
+    # at their dataclass defaults.
+    # Agent-side endpoints. On Docker Desktop the docker bridge
+    # IPs aren't reachable from the smolvm guest (TSI uses macOS
+    # networking; docker container IPs live in the daemon's VM),
+    # so the agent dials the bundle via host loopback +
+    # docker-published random ports. Empty at prepare time;
+    # launch populates these after bundle bringup via
+    # `dataclasses.replace`. Format: a `host:port` for git-gate
+    # (insteadOf URL prefix) + full URLs for proxy / supervise.
+    agent_proxy_url: str = ""
+    agent_git_gate_host: str = ""
+    agent_supervise_url: str = ""
+
+    @property
+    def machine_name(self) -> str:
+        """smolvm machine name. `machine_create` boots from a packed
+        `.smolmachine` artifact (pre-baked at prepare time via
+        `smolvm pack create`); using `--from` instead of `--image`
+        avoids the registry-pull race we hit when machine_start tried
+        to fetch on-demand and the libkrun agent's network attempt
+        got refused by macOS."""
+        return self.agent_provision.instance_name
+
+    @property
+    def agent_image(self) -> str:
+        """Agent image ref (docker tag). `launch` runs the
+        build → save → registry push → smolvm pack pipeline against
+        this and feeds the resulting `.smolmachine` artifact to
+        `machine_create --from`. The pipeline runs at launch time
+        (not prepare time) so the docker build output doesn't garble
+        the dashboard's preflight modal."""
+        return self.agent_provision.image
+
+    @property
+    def prompt_file(self) -> Path:
+        """Path to the agent's prompt file on the host. Always written
+        (mode 0o600) so the in-VM path always exists; the file is
+        empty when the agent has no prompt — claude-code reads it
+        via --append-system-prompt-file only when non-empty."""
+        return self.agent_provision.prompt_file
+
+    @property
+    def git_gate_insteadof_host(self) -> str:
+        return self.agent_git_gate_host
+
+    @property
+    def git_gate_insteadof_scheme(self) -> str:
+        return "http"
+
+    @property
+    def agent_command(self) -> str:
+        return self.agent_provision.command
+
+    @property
+    def agent_prompt_mode(self) -> PromptMode:
+        return self.agent_provision.prompt_mode
+
+    @property
+    def agent_provider_template(self) -> str:
+        return self.agent_provision.template
+
+    @property
+    def agent_dockerfile_path(self) -> str:
+        return self.agent_provision.dockerfile

bot_bottle/backend/smolmachines/cleanup.py

@@ -0,0 +1,159 @@
+"""Cleanup + active-listing for the smolmachines backend (issue #77).
+
+`prepare_cleanup` enumerates leftover smolmachines resources:
+
+  - smolvm machines (`smolvm machine ls --json`) whose name starts
+    with `bot-bottle-`.
+  - bundle docker containers (`bot-bottle-sidecars-<slug>`).
+  - bundle docker networks (`bot-bottle-bundle-<slug>`).
+
+State dirs live under `~/.bot-bottle/state/<identity>/` —
+shared layout with the docker backend, which has the single
+orphan-state-dir enumerator (it already consults
+`enumerate_active_agents()` so a live smolmachines bottle's dir
+is preserved).
+
+`cleanup` removes everything in the plan: stop + delete each VM,
+force-rm each container, rm each network. Each step is
+best-effort — a failure on one resource doesn't block the others."""
+
+from __future__ import annotations
+
+import json
+import subprocess
+
+from ...log import info, warn
+from . import sidecar_bundle as _bundle
+from . import smolvm as _smolvm
+from .bottle_cleanup_plan import SmolmachinesBottleCleanupPlan
+
+
+# Both names start with the same prefix the launcher uses.
+_VM_PREFIX = "bot-bottle-"
+_BUNDLE_PREFIX = _bundle.bundle_container_name("")          # `bot-bottle-sidecars-`
+_NETWORK_PREFIX = _bundle.bundle_network_name("")           # `bot-bottle-bundle-`
+
+
+def prepare_cleanup() -> SmolmachinesBottleCleanupPlan:
+    """Enumerate every smolmachines-owned resource on the host.
+    No side effects. Returns an empty plan when smolvm isn't on
+    PATH (no machines to reap) — `cleanup` is a no-op in that
+    case too."""
+    machines = _list_bot_bottle_machines()
+    bundles = _list_bundle_containers()
+    networks = _list_bundle_networks()
+    return SmolmachinesBottleCleanupPlan(
+        machines=tuple(sorted(machines)),
+        bundles=tuple(sorted(bundles)),
+        networks=tuple(sorted(networks)),
+    )
+
+
+def cleanup(plan: SmolmachinesBottleCleanupPlan) -> None:
+    """Remove everything in the plan. Order matters: stop VMs
+    first (they hold ports on lo0 aliases via libkrun), then the
+    bundle containers (which hold the host port-forwards), then
+    the networks (which docker won't reap until the containers
+    are gone)."""
+    for name in plan.machines:
+        info(f"stopping smolvm machine {name}")
+        subprocess.run(
+            ["smolvm", "machine", "stop", "--name", name],
+            stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL,
+            check=False,
+        )
+        info(f"deleting smolvm machine {name}")
+        r = subprocess.run(
+            ["smolvm", "machine", "delete", "-f", name],
+            capture_output=True, text=True, check=False,
+        )
+        if r.returncode != 0:
+            warn(
+                f"smolvm machine delete -f {name} failed: "
+                f"{(r.stderr or '').strip()}"
+            )
+
+    for name in plan.bundles:
+        info(f"removing bundle container {name}")
+        subprocess.run(
+            ["docker", "rm", "-f", name],
+            stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL,
+            check=False,
+        )
+
+    for name in plan.networks:
+        info(f"removing bundle network {name}")
+        r = subprocess.run(
+            ["docker", "network", "rm", name],
+            capture_output=True, text=True, check=False,
+        )
+        if r.returncode != 0 and "no such network" not in (r.stderr or "").lower():
+            warn(
+                f"docker network rm {name} failed: "
+                f"{(r.stderr or '').strip()}"
+            )
+
+
+def _list_bot_bottle_machines() -> list[str]:
+    """All smolvm machines named `bot-bottle-*`, regardless of
+    state (running / stopped / created). Empty when smolvm isn't
+    installed."""
+    if not _smolvm.is_available():
+        return []
+    r = subprocess.run(
+        ["smolvm", "machine", "ls", "--json"],
+        capture_output=True, text=True, check=False,
+    )
+    if r.returncode != 0:
+        return []
+    try:
+        machines = json.loads(r.stdout or "[]")
+    except json.JSONDecodeError:
+        return []
+    return [
+        m["name"] for m in machines
+        if isinstance(m, dict)
+        and m.get("name", "").startswith(_VM_PREFIX)
+    ]
+
+
+def _list_bundle_containers() -> list[str]:
+    """All docker containers named `bot-bottle-sidecars-*`,
+    running or stopped. Empty when docker isn't installed."""
+    # Late import: `backend/__init__` imports this module
+    # transitively via the smolmachines backend.
+    from .. import has_backend
+    if not has_backend("docker"):
+        return []
+    r = subprocess.run(
+        ["docker", "ps", "-a",
+         "--filter", f"name=^{_BUNDLE_PREFIX}",
+         "--format", "{{.Names}}"],
+        capture_output=True, text=True, check=False,
+    )
+    if r.returncode != 0:
+        return []
+    return [
+        line for line in (r.stdout or "").splitlines()
+        if line and line.startswith(_BUNDLE_PREFIX)
+    ]
+
+
+def _list_bundle_networks() -> list[str]:
+    """All docker networks named `bot-bottle-bundle-*`. Empty
+    when docker isn't installed."""
+    from .. import has_backend
+    if not has_backend("docker"):
+        return []
+    r = subprocess.run(
+        ["docker", "network", "ls",
+         "--filter", f"name={_NETWORK_PREFIX}",
+         "--format", "{{.Name}}"],
+        capture_output=True, text=True, check=False,
+    )
+    if r.returncode != 0:
+        return []
+    return [
+        line for line in (r.stdout or "").splitlines()
+        if line and line.startswith(_NETWORK_PREFIX)
+    ]

bot_bottle/backend/smolmachines/egress_apply.py

@@ -0,0 +1,21 @@
+"""Egress apply for the smolmachines backend.
+
+The smolmachines sidecar bundle runs as a host-side Docker container,
+so egress signalling is identical to the docker backend.
+"""
+
+from __future__ import annotations
+
+from ..docker.egress_apply import (  # noqa: F401
+    DockerEgressApplicator,
+    EgressApplyError,
+    applicator,
+    fetch_current_routes,
+)
+
+__all__ = [
+    "DockerEgressApplicator",
+    "EgressApplyError",
+    "applicator",
+    "fetch_current_routes",
+]

bot_bottle/backend/smolmachines/enumerate.py

@@ -0,0 +1,123 @@
+"""Active-agent enumeration for the smolmachines backend (PRD
+0023 chunk 4 follow-up + issue #77).
+
+Returns a list of `ActiveAgent` records — same shape the docker
+backend produces — so CLI `list active` and the dashboard agents
+pane render both backends through one code path.
+
+A smolmachines agent is "active" when its smolvm guest is
+running. We cross-reference against the per-bottle sidecar
+bundle container to populate the `services` field (which daemons
+are up in the bundle); without a bundle we still surface the VM
+so the operator can see + clean it up.
+
+The cross-backend caller gates on `has_backend("smolmachines")`
+and `has_backend("docker")`, so this module assumes both are
+available when called. Both subprocess calls below still
+tolerate "command not on PATH" defensively, but the gate is the
+intended access pattern."""
+
+from __future__ import annotations
+
+import json
+import subprocess
+
+from .. import ActiveAgent
+from ...bottle.state import read_metadata
+from . import sidecar_bundle as _bundle
+
+
+# Smolvm VM names produced by prepare are `bot-bottle-<slug>`,
+# matching the bundle container name pattern. We use the prefix
+# both as a filter and to strip back to the slug.
+_VM_NAME_PREFIX = "bot-bottle-"
+
+
+def enumerate_active() -> list[ActiveAgent]:
+    """All currently-running smolmachines-backed agents. Empty
+    list when no matching VMs are running. Caller is responsible
+    for gating on `has_backend('smolmachines')` if needed; if
+    smolvm is missing the `smolvm machine ls` call below returns
+    nothing silently."""
+    result = subprocess.run(
+        ["smolvm", "machine", "ls", "--json"],
+        capture_output=True, text=True, check=False,
+    )
+    if result.returncode != 0:
+        return []
+    try:
+        machines = json.loads(result.stdout or "[]")
+    except json.JSONDecodeError:
+        return []
+    services_by_slug = _query_bundle_services()
+    out: list[ActiveAgent] = []
+    for m in machines:
+        name = m.get("name") or ""
+        state = m.get("state") or ""
+        if state != "running" or not name.startswith(_VM_NAME_PREFIX):
+            continue
+        slug = name[len(_VM_NAME_PREFIX):]
+        metadata = read_metadata(slug)
+        out.append(ActiveAgent(
+            backend_name="smolmachines",
+            slug=slug,
+            agent_name=metadata.agent_name if metadata else "?",
+            started_at=metadata.started_at if metadata else "",
+            services=services_by_slug.get(slug, ()),
+            label=metadata.label if metadata else "",
+            color=metadata.color if metadata else "",
+        ))
+    return out
+
+
+def _query_bundle_services() -> dict[str, tuple[str, ...]]:
+    """`{slug: ('egress', ...)}` from each running bundle container's
+    `BOT_BOTTLE_SIDECAR_DAEMONS` env var.
+    Smolmachines bundles all run the PRD-0024 image with the
+    same daemon set declared via env, so one inspect per bundle
+    gets us the picture without exec'ing into the container.
+
+    Returns an empty mapping when the docker backend isn't
+    available — the bundle services field on each ActiveAgent
+    just shows up empty, matching the docker backend's "starting"
+    state."""
+    # Late import: `has_backend` lives on the backend package's
+    # __init__, which imports this module transitively. Pulling
+    # the name in at call time sidesteps the cycle.
+    from .. import has_backend
+    if not has_backend("docker"):
+        return {}
+    ps = subprocess.run(
+        ["docker", "ps",
+         "--filter", "name=" + _bundle.bundle_container_name(""),
+         "--format", "{{.Names}}"],
+        capture_output=True, text=True, check=False,
+    )
+    if ps.returncode != 0:
+        return {}
+    out: dict[str, tuple[str, ...]] = {}
+    for line in (ps.stdout or "").splitlines():
+        name = line.strip()
+        if not name:
+            continue
+        slug = name.removeprefix(_bundle.bundle_container_name(""))
+        if not slug:
+            continue
+        inspect = subprocess.run(
+            ["docker", "inspect", name, "--format", "{{json .Config.Env}}"],
+            capture_output=True, text=True, check=False,
+        )
+        if inspect.returncode != 0:
+            continue
+        try:
+            env_list = json.loads(inspect.stdout or "[]")
+        except json.JSONDecodeError:
+            continue
+        for entry in env_list:
+            key, _, value = entry.partition("=")
+            if key == "BOT_BOTTLE_SIDECAR_DAEMONS":
+                out[slug] = tuple(sorted(
+                    d for d in value.split(",") if d
+                ))
+                break
+    return out

bot_bottle/backend/smolmachines/freezer.py

@@ -0,0 +1,145 @@
+"""SmolmachinesFreezer — snapshot a smolmachines bottle.
+
+`smolvm pack create --from-vm` requires the VM to be stopped, and smolvm
+removes VMs when stopped (same issue as Apple Container). Instead, exec
+into the running VM as root to write a gzip-compressed tar of the root
+filesystem to /var/tmp, then copy it to the host with `smolvm machine cp`,
+build a Docker image from the archive, convert it to a smolmachine artifact
+via the existing registry pipeline, and record the sidecar path. The VM
+stays running throughout."""
+
+from __future__ import annotations
+
+import tempfile
+from pathlib import Path
+
+from .. import ActiveAgent
+from ..freeze import Freezer
+from ..docker import util as docker_mod
+from .local_registry import crane_push_tarball, ephemeral_registry
+from .smolvm import machine_cp, machine_exec, pack_create
+from ...bottle.state import bottle_state_dir
+from ...log import die, info
+
+
+# Temp file written inside the VM during commit. Lives in /var/tmp
+# (on-disk, unlike tmpfs /tmp) to survive for machine_cp.
+_VM_COMMIT_TAR = "/var/tmp/.bot-bottle-commit.tar.gz"
+
+
+class SmolmachinesFreezer(Freezer):
+    """Freezes a smolmachines bottle via exec-tar + Docker image + smolmachine pack.
+
+    The VM is NOT stopped. We exec into the running VM to write a compressed
+    tar of the root filesystem to /var/tmp, copy it to the host with
+    machine_cp, build a Docker image (Docker's ADD decompresses .tar.gz
+    automatically), then run the same image→registry→pack_create pipeline
+    that _ensure_smolmachine uses for fresh builds."""
+
+    backend_name = "smolmachines"
+
+    def _freeze(self, agent: ActiveAgent) -> str:
+        machine = f"bot-bottle-{agent.slug}"
+        image_ref = f"bot-bottle-committed-{agent.slug}:latest"
+        output_dir = bottle_state_dir(agent.slug)
+        output_dir.mkdir(parents=True, exist_ok=True)
+        binary = output_dir / "committed-smolmachine"
+        sidecar = output_dir / "committed-smolmachine.smolmachine"
+        _snapshot_running_vm(machine, image_ref, binary)
+        return str(sidecar)
+
+    def _export_hint(self, slug: str, image_ref: str) -> None:
+        info(f"to export for migration:      cp {image_ref} {slug}.smolmachine")
+
+
+def _snapshot_running_vm(machine: str, image_ref: str, binary: Path) -> None:
+    """Exec-tar the running VM, build a Docker image, and pack to a smolmachine.
+
+    binary:  destination for the launcher (sibling .smolmachine is the artifact
+             that machine_create --from consumes, same convention as pack_create).
+    """
+    with tempfile.TemporaryDirectory(prefix="bot-bottle-vm-commit.") as tmp:
+        tmp_path = Path(tmp)
+        # Use .tar.gz — Docker ADD decompresses automatically and the
+        # compressed archive fits in the VM's /var/tmp more easily.
+        rootfs_tar_gz = tmp_path / "rootfs.tar.gz"
+        dockerfile = tmp_path / "Dockerfile"
+
+        _exec_tar_to_file(machine, rootfs_tar_gz)
+
+        dockerfile.write_text(
+            "FROM scratch\n"
+            "ADD rootfs.tar.gz /\n"
+            "USER node\n"
+            "WORKDIR /home/node\n"
+        )
+        docker_mod.build_image(image_ref, str(tmp_path), dockerfile=str(dockerfile))
+
+    image_tarball = binary.parent / "committed.image.tar"
+    docker_mod.save(image_ref, str(image_tarball))
+    try:
+        with ephemeral_registry() as handle:
+            digest = docker_mod.image_id(image_ref).split(":", 1)[-1][:16]
+            push_ref = f"{handle.push_endpoint}/bot-bottle-committed:{digest}"
+            pack_ref = f"{handle.pull_endpoint}/bot-bottle-committed:{digest}"
+            crane_push_tarball(handle, str(image_tarball), push_ref)
+            pack_create(pack_ref, binary)
+    finally:
+        image_tarball.unlink(missing_ok=True)
+
+
+def _exec_tar_to_file(machine: str, dest: Path) -> None:
+    """Snapshot the running VM's root filesystem to dest (.tar.gz).
+
+    Writes a gzip-compressed tar to _VM_COMMIT_TAR inside the VM via
+    machine_exec (same mechanism as provisioning), then copies it to the
+    host with machine_cp. This avoids binary-stdout piping through the
+    smolvm exec channel, which does not reliably handle large binary output.
+
+    A connectivity probe (machine_exec true) runs first so a concurrent-exec
+    limitation (smolvm may reject a second exec while -i -t is active) is
+    reported clearly rather than as a silent failure."""
+    # Connectivity probe — if smolvm rejects concurrent exec while an
+    # interactive session is running, fail clearly here.
+    probe = machine_exec(machine, ["true"])
+    if probe.returncode != 0:
+        die(
+            f"smolvm exec is not available for {machine!r} "
+            f"(exit {probe.returncode}: {probe.stderr.strip() or probe.stdout.strip() or '<no output>'}). "
+            f"If an interactive session is active, smolvm may not support concurrent exec."
+        )
+
+    # Create the compressed tar inside the VM.
+    # tar exits 1 when files change during archiving (normal for a live
+    # filesystem); only treat exit > 1 as fatal.
+    tar_result = machine_exec(
+        machine,
+        [
+            "tar", "--create", "--gzip",
+            "--exclude=./proc",
+            "--exclude=./sys",
+            "--exclude=./dev",
+            "--exclude=./run",
+            # /tmp and /var/tmp are ephemeral. Their stale contents
+            # (e.g. /tmp/claude-<uid>) have uid remapped by smolvm's
+            # pack process, causing Claude Code to refuse to use them
+            # on resume. Exclude both; _init_vm recreates them with
+            # mkdir -p + correct ownership on every boot.
+            "--exclude=./tmp",
+            "--exclude=./var/tmp",
+            f"--file={_VM_COMMIT_TAR}",
+            "--directory=/",
+            ".",
+        ],
+    )
+    if tar_result.returncode > 1:
+        die(
+            f"smolvm exec tar {machine!r} failed (exit {tar_result.returncode}): "
+            f"{tar_result.stderr.strip() or tar_result.stdout.strip() or '<no output>'}"
+        )
+
+    # Copy from VM to host, then clean up.
+    try:
+        machine_cp(f"{machine}:{_VM_COMMIT_TAR}", str(dest))
+    finally:
+        machine_exec(machine, ["rm", "-f", _VM_COMMIT_TAR])

bot_bottle/backend/smolmachines/launch.py

@@ -0,0 +1,521 @@
+"""End-to-end launch flow for the smolmachines backend
+(PRD 0023 chunks 2d + 4b).
+
+Brings up the per-bottle docker bridge + sidecar bundle (with
+real daemons + their config files), creates + starts the smolvm
+guest pointed at the bundle's pinned IP via TSI's
+`--allow-cidr <bundle-ip>/32` allowlist, yields a
+`SmolmachinesBottle` handle, tears everything down on context
+exit.
+
+The bundle's daemons consume the inner Plans the docker backend
+already produces: egress reads routes + CAs from the EgressPlan.
+Git-gate + supervise plumb through the same plans the docker
+backend uses, minus the docker-network fields that don't apply here."""
+
+from __future__ import annotations
+
+import dataclasses
+import os
+import platform
+from contextlib import ExitStack, contextmanager
+from pathlib import Path
+from typing import Callable, Generator
+
+from ...egress import (
+    EGRESS_ROUTES_IN_CONTAINER,
+    egress_agent_env_entries,
+    egress_resolve_token_values,
+    egress_sidecar_env_entries,
+)
+from ...supervise import DB_PATH_IN_CONTAINER, SUPERVISE_PORT
+from ...util import expand_tilde
+from ..docker import util as docker_mod
+from ..docker.egress import (
+    EGRESS_CA_IN_CONTAINER,
+    EGRESS_PORT as _EGRESS_PORT,
+    egress_tls_init,
+)
+from ..docker.git_gate import (
+    GIT_GATE_ACCESS_HOOK_IN_CONTAINER,
+    GIT_GATE_CREDS_DIR_IN_CONTAINER,
+    GIT_GATE_ENTRYPOINT_IN_CONTAINER,
+    GIT_GATE_HOOK_IN_CONTAINER,
+)
+from ...git_gate import (
+    provision_git_gate_dynamic_keys,
+    revoke_git_gate_provisioned_keys,
+)
+from ...log import info, warn
+from ...bottle.state import (
+    egress_state_dir,
+    git_gate_state_dir,
+    read_committed_image,
+)
+from . import loopback_alias as _loopback
+from . import sidecar_bundle as _bundle
+from . import smolvm as _smolvm
+from .bottle import SmolmachinesBottle
+from .bottle_plan import SmolmachinesBottlePlan
+from .local_registry import crane_push_tarball, ephemeral_registry
+
+
+# Repo root, used as the `docker build` context for the agent image.
+_REPO_DIR = str(Path(__file__).resolve().parent.parent.parent.parent)
+
+
+# Per-host cache for `smolvm pack create` outputs. Keyed by the
+# docker image ID so a Dockerfile change automatically invalidates
+# the cache. `pack create` is idempotent on the smolvm side but
+# takes several seconds even on a no-op rebuild.
+_SMOLMACHINE_CACHE_DIR = Path.home() / ".cache" / "bot-bottle" / "smolmachines"
+
+
+# Container-internal listening ports for each bundle daemon. The
+# bundle publishes each one on a random host loopback port (see
+# `_bundle.start_bundle`), and `_bundle.bundle_host_port` looks
+# them up post-start.
+_GIT_HTTP_PORT = 9420
+_SUPERVISE_PORT = SUPERVISE_PORT
+
+
+@contextmanager
+def launch(
+    plan: SmolmachinesBottlePlan,
+    *,
+    provision: Callable[[SmolmachinesBottlePlan, "SmolmachinesBottle"], str | None],
+) -> Generator[SmolmachinesBottle, None, None]:
+    """Build + run the bottle and yield a handle; tear everything
+    down on exit. Errors during bringup unwind any partial state
+    via the ExitStack."""
+    stack = ExitStack()
+    try:
+        loopback_ip, network = _allocate_resources(plan, stack)
+        plan = _mint_certs(plan)
+        proxy_host = _proxy_host(plan, loopback_ip)
+        plan = _start_bundle(plan, network, proxy_host, stack)
+        plan = _discover_urls(plan, proxy_host)
+
+        agent_from_path = _agent_from_path(plan)
+
+        _launch_vm(plan, agent_from_path, proxy_host, stack)
+        _init_vm(plan)
+
+        bottle = SmolmachinesBottle(
+            plan.machine_name,
+            prompt_path=None,
+            guest_env=plan.guest_env,
+            agent_command=plan.agent_command,
+            agent_prompt_mode=plan.agent_prompt_mode,
+            agent_provider_template=plan.agent_provider_template,
+            terminal_title=f"{plan.spec.label} ({plan.spec.agent_name})" if plan.spec.label else plan.spec.agent_name,
+            terminal_color=plan.spec.color,
+            agent_workdir=plan.workspace_plan.workdir,
+        )
+        bottle.prompt_path = provision(plan, bottle)
+
+        yield bottle
+    finally:
+        _teardown_smolmachines(stack, plan)
+
+
+def _teardown_smolmachines(
+    stack: ExitStack,
+    plan: SmolmachinesBottlePlan,
+) -> None:
+    """Unwind the ExitStack, then revoke any provisioned deploy keys.
+
+    ExitStack errors are caught and logged (non-fatal) so that key
+    revocation always runs. Revocation errors propagate — a stranded
+    deploy key is a security concern the operator must address."""
+    teardown_exc: BaseException | None = None
+    try:
+        stack.close()
+    except BaseException as exc:  # noqa: W0718 — teardown must not fail
+        teardown_exc = exc
+        warn(f"smolmachines teardown failed: {exc!r}")
+    bottle = plan.manifest.bottle
+    revoke_git_gate_provisioned_keys(bottle, git_gate_state_dir(plan.slug))
+    if teardown_exc is not None:
+        raise teardown_exc
+
+
+def _allocate_resources(
+    plan: SmolmachinesBottlePlan,
+    stack: ExitStack,
+) -> tuple[str, str]:
+    """Reserve a loopback alias and create the per-bottle docker bridge.
+
+    The per-bottle alias scopes TSI's allowlist to this bottle's
+    published ports so the agent can't reach other bottles' or host
+    services' ports on loopback. On macOS `ensure_pool` first
+    sudo-aliases the pool on `lo0`; on Linux that's a no-op since
+    all of 127.0.0.0/8 is already loopback, but the per-bottle
+    allocation runs on both."""
+    _loopback.ensure_pool()
+    loopback_ip = _loopback.allocate(plan.slug)
+    network = _bundle.bundle_network_name(plan.slug)
+    _bundle.create_bundle_network(network, plan.bundle_subnet, plan.bundle_gateway)
+    stack.callback(_bundle.remove_bundle_network, network)
+    return loopback_ip, network
+
+
+def _mint_certs(plan: SmolmachinesBottlePlan) -> SmolmachinesBottlePlan:
+    """Mint the egress MITM CA and return the plan with CA paths filled."""
+    egress_ca_host, egress_ca_cert_only = egress_tls_init(
+        egress_state_dir(plan.slug),
+    )
+    egress_plan = dataclasses.replace(
+        plan.egress_plan,
+        mitmproxy_ca_host_path=egress_ca_host,
+        mitmproxy_ca_cert_only_host_path=egress_ca_cert_only,
+    )
+    return dataclasses.replace(plan, egress_plan=egress_plan)
+
+
+def _start_bundle(
+    plan: SmolmachinesBottlePlan,
+    network: str,
+    proxy_host: str,
+    stack: ExitStack,
+) -> SmolmachinesBottlePlan:
+    """Build the BundleLaunchSpec, resolve token env, start the
+    sidecar bundle container, and register teardown."""
+    plan = _provision_git_gate_keys(plan)
+    bundle_spec = _bundle_launch_spec(plan, network, proxy_host)
+    token_env = _resolve_token_env(plan, dict(os.environ))
+    _bundle.ensure_bundle_image(bundle_spec.image)
+    _bundle.start_bundle(bundle_spec, env={**os.environ, **token_env})
+    stack.callback(_bundle.stop_bundle, plan.slug)
+    return plan
+
+
+def _provision_git_gate_keys(
+    plan: SmolmachinesBottlePlan,
+) -> SmolmachinesBottlePlan:
+    if not plan.git_gate_plan.upstreams:
+        return plan
+    git_gate_plan = provision_git_gate_dynamic_keys(
+        plan.manifest.bottle,
+        plan.git_gate_plan,
+        git_gate_state_dir(plan.slug),
+    )
+    return dataclasses.replace(plan, git_gate_plan=git_gate_plan)
+
+
+def _discover_urls(
+    plan: SmolmachinesBottlePlan,
+    proxy_host: str,
+) -> SmolmachinesBottlePlan:
+    """Discover host-side ports for published container ports and
+    return the plan with URLs + guest_env stamped in.
+
+    `proxy_host` is the host IP that both TSI's allowlist and
+    docker's port-forward bindings are keyed to. On macOS it is the
+    per-bottle loopback alias; on Linux it is the per-bottle bridge
+    gateway (see `_proxy_host`). The agent dials the published port
+    on this IP for all bundle-hosted services.
+
+    NO_PROXY includes `proxy_host` so supervise + git-gate URLs
+    bypass HTTPS_PROXY."""
+    agent_facing_host_port = _bundle.bundle_host_port(
+        plan.slug, _EGRESS_PORT, host_ip=proxy_host,
+    )
+    agent_proxy_url = f"http://{proxy_host}:{agent_facing_host_port}"
+
+    agent_git_gate_host = ""
+    if plan.git_gate_plan.upstreams:
+        git_gate_host_port = _bundle.bundle_host_port(
+            plan.slug, _GIT_HTTP_PORT, host_ip=proxy_host,
+        )
+        agent_git_gate_host = f"{proxy_host}:{git_gate_host_port}"
+
+    agent_supervise_url = ""
+    if plan.supervise_plan is not None:
+        supervise_host_port = _bundle.bundle_host_port(
+            plan.slug, _SUPERVISE_PORT, host_ip=proxy_host,
+        )
+        agent_supervise_url = f"http://{proxy_host}:{supervise_host_port}/"
+
+    existing_no_proxy = plan.guest_env.get("NO_PROXY", "localhost,127.0.0.1")
+    no_proxy = f"{existing_no_proxy},{proxy_host}"
+    guest_env = {
+        **plan.guest_env,
+        "HTTPS_PROXY": agent_proxy_url,
+        "HTTP_PROXY":  agent_proxy_url,
+        "https_proxy": agent_proxy_url,
+        "http_proxy":  agent_proxy_url,
+        "NO_PROXY":    no_proxy,
+        "no_proxy":    no_proxy,
+    }
+    if agent_git_gate_host:
+        guest_env["GIT_GATE_URL"] = f"http://{agent_git_gate_host}"
+    if agent_supervise_url:
+        guest_env["MCP_SUPERVISE_URL"] = agent_supervise_url
+    for entry in egress_agent_env_entries(plan.egress_plan):
+        name, value = entry.split("=", 1)
+        guest_env[name] = value
+
+    return dataclasses.replace(
+        plan,
+        guest_env=guest_env,
+        agent_proxy_url=agent_proxy_url,
+        agent_git_gate_host=agent_git_gate_host,
+        agent_supervise_url=agent_supervise_url,
+    )
+
+
+def _launch_vm(
+    plan: SmolmachinesBottlePlan,
+    agent_from_path: Path,
+    proxy_host: str,
+    stack: ExitStack,
+) -> None:
+    """Create, patch, and start the smolvm VM; register teardown.
+
+    --allow-cidr is `proxy_host/32` — the per-bottle loopback alias
+    on macOS or the bridge gateway on Linux (see `_proxy_host`). This
+    ensures the guest can only reach bundle ports published on that IP,
+    not the container IP directly. force_allowlist confirms the
+    allowlist persisted (patching smolvm 0.8.0's silent-drop of
+    --allow-cidr when combined with --from) and fails closed if it
+    can't. Smolfile isn't usable here — smolvm 0.8.0 makes --from
+    and --smolfile mutually exclusive."""
+    tsi_cidr = f"{proxy_host}/32"
+    _smolvm.machine_create(
+        plan.machine_name,
+        from_path=agent_from_path,
+        allow_cidrs=[tsi_cidr],
+        env=plan.guest_env,
+    )
+    stack.callback(_smolvm.machine_delete, plan.machine_name)
+    # Confirm the booted VM's TSI allowlist will actually enforce the
+    # /32 before start (smolvm 0.8.0 silently drops `--allow-cidr`
+    # with `--from`, so the persisted state DB is patched if needed).
+    # Fails closed if enforcement can't be confirmed.
+    _loopback.force_allowlist(plan.machine_name, [tsi_cidr])
+    _smolvm.machine_start(plan.machine_name)
+    stack.callback(_smolvm.machine_stop, plan.machine_name)
+
+
+def _init_vm(plan: SmolmachinesBottlePlan) -> None:
+    """Repair filesystem ownership and wait for exec channel readiness.
+
+    Ownership repair: smolvm's pack process remaps files to the host
+    invoker's uid (e.g. 501 on macOS, 1000 on Linux). The chowns use
+    names not numbers so they're correct on either. /home/node must
+    be node:node so
+    Claude Code can write ~/.claude.json; /tmp + /var/tmp need root
+    mode 1777 so non-root processes can create per-uid scratch dirs.
+    All folded into one sh -c to avoid back-to-back exec calls
+    immediately after machine_start (libkrun exec-channel race).
+
+    mkdir -p guards: when booting from a committed snapshot, /tmp and
+    /var/tmp are excluded from the archive (they're ephemeral and their
+    stale contents would have wrong uid after smolvm's uid remap). The
+    directories must be created before chown/chmod can set permissions.
+
+    wait_exec_ready polls until the exec channel is ready for the
+    subsequent provision calls, replacing the empirical sleep."""
+    _smolvm.machine_exec(plan.machine_name, [
+        "sh", "-c",
+        "mkdir -p /tmp /var/tmp && "
+        "chown -R node:node /home/node && "
+        "chown root:root /tmp /var/tmp && "
+        "chmod 1777 /tmp /var/tmp",
+    ])
+    _smolvm.wait_exec_ready(plan.machine_name)
+
+
+def _proxy_host(plan: SmolmachinesBottlePlan, loopback_ip: str) -> str:
+    """Return the host IP for TSI's allowlist and docker port-forward bindings.
+
+    On macOS, the per-bottle loopback alias (e.g. ``127.0.0.16``) works
+    because macOS's network stack lets TSI intercept 127.x.x.x connects
+    from the guest before they reach the host's own loopback.
+
+    On Linux, the guest kernel's LOCAL routing table routes all
+    ``127.0.0.0/8`` to the guest's own loopback — those packets never
+    reach eth0 and TSI never sees them. Using the per-bottle bridge
+    gateway (e.g. ``192.168.N.1``) instead sidesteps the problem: it
+    is not a loopback address, so the guest routes it via eth0 and TSI
+    intercepts it normally. The TSI allowlist is ``gateway/32``, which
+    is distinct from the container IP (``192.168.N.2``), so the agent
+    still can't reach the egress daemon directly — TSI blocks any
+    connection to the container IP that isn't via the published port."""
+    if platform.system() == "Linux":
+        return plan.bundle_gateway
+    return loopback_ip
+
+
+def _bundle_launch_spec(
+    plan: SmolmachinesBottlePlan, network: str, proxy_host: str,
+) -> _bundle.BundleLaunchSpec:
+    """Build a BundleLaunchSpec from the resolved inner Plans.
+
+    Daemons in the CSV:
+      - egress is always present.
+      - git-gate + git-http are conditional on plan.git_gate_plan.upstreams.
+      - supervise is conditional on plan.supervise_plan.
+
+    Env + volumes are the union of the sidecar daemons' needs, with
+    daemon-private values only (HTTPS_PROXY is scoped to the
+    egress process by egress_entrypoint.sh — see PRD 0024's bundle
+    bind-address PR)."""
+    daemons: list[str] = ["egress"]
+    env: list[str] = []
+    volumes: list[tuple[str, str, bool]] = []
+
+    # --- egress -----------------------------------------------
+    ep = plan.egress_plan
+    volumes.append((str(ep.mitmproxy_ca_host_path), EGRESS_CA_IN_CONTAINER, True))
+    if ep.routes:
+        volumes.append((str(ep.routes_path.parent), str(Path(EGRESS_ROUTES_IN_CONTAINER).parent), True))
+    env.extend(egress_sidecar_env_entries(ep))
+
+    # --- git-gate ---------------------------------------------
+    gp = plan.git_gate_plan
+    if gp.upstreams:
+        daemons += ["git-gate", "git-http"]
+        volumes += [
+            (str(gp.entrypoint_script), GIT_GATE_ENTRYPOINT_IN_CONTAINER, True),
+            (str(gp.hook_script), GIT_GATE_HOOK_IN_CONTAINER, True),
+            (str(gp.access_hook_script), GIT_GATE_ACCESS_HOOK_IN_CONTAINER, True),
+        ]
+        for u in gp.upstreams:
+            keypath = expand_tilde(u.identity_file)
+            volumes.append((
+                keypath,
+                f"{GIT_GATE_CREDS_DIR_IN_CONTAINER}/{u.name}-key",
+                True,
+            ))
+            if u.known_hosts_file:
+                volumes.append((
+                    str(u.known_hosts_file),
+                    f"{GIT_GATE_CREDS_DIR_IN_CONTAINER}/{u.name}-known_hosts",
+                    True,
+                ))
+
+    # --- supervise --------------------------------------------
+    sp = plan.supervise_plan
+    if sp is not None:
+        daemons.append("supervise")
+        env += [
+            f"SUPERVISE_BOTTLE_SLUG={plan.slug}",
+            f"SUPERVISE_DB_PATH={DB_PATH_IN_CONTAINER}",
+            f"SUPERVISE_PORT={SUPERVISE_PORT}",
+        ]
+        volumes.append((str(sp.db_path), DB_PATH_IN_CONTAINER, False))
+
+    # Container ports the agent reaches from the smolvm guest —
+    # published on `proxy_host` so the TSI allowlist and the docker
+    # port-forward bindings point at the same IP. Egress is always
+    # the agent's HTTP/HTTPS proxy.
+    ports_to_publish: list[int] = [_EGRESS_PORT]
+    if gp.upstreams:
+        ports_to_publish.append(_GIT_HTTP_PORT)
+    if sp is not None:
+        ports_to_publish.append(_SUPERVISE_PORT)
+
+    return _bundle.BundleLaunchSpec(
+        slug=plan.slug,
+        network_name=network,
+        subnet=plan.bundle_subnet,
+        gateway=plan.bundle_gateway,
+        bundle_ip=plan.bundle_ip,
+        daemons_csv=",".join(daemons),
+        environment=tuple(env),
+        volumes=tuple(volumes),
+        ports_to_publish=tuple(ports_to_publish),
+        publish_host_ip=proxy_host,
+    )
+
+
+def _resolve_token_env(
+    plan: SmolmachinesBottlePlan, host_env: dict[str, str],
+) -> dict[str, str]:
+    """Resolve the egress token env-var values from the host's
+    environ so they reach the bundle's process env via docker's
+    `-e NAME` inheritance. Empty when no routes declare auth."""
+    effective_env = {**host_env, **plan.agent_provision.provisioned_env}
+    return egress_resolve_token_values(plan.egress_plan.token_env_map, effective_env)
+
+
+def _agent_from_path(plan: SmolmachinesBottlePlan) -> Path:
+    """Return the `.smolmachine` artifact used for `machine create --from`.
+
+    Prefer a committed VM artifact when one is recorded and still
+    present. If the file was removed, fall back to the normal image
+    build + pack cache path.
+    """
+    committed = read_committed_image(plan.slug)
+    if committed:
+        committed_path = Path(committed)
+        if committed_path.is_file():
+            info(f"using committed smolmachine {str(committed_path)!r}")
+            return committed_path
+
+    # Build the agent image and pack it into a `.smolmachine`
+    # artifact (or hit the per-Dockerfile-digest cache). Runs here,
+    # not in prepare, so the docker-build output doesn't garble the
+    # dashboard's preflight modal.
+    return _ensure_smolmachine(
+        plan.agent_image,
+        dockerfile=plan.agent_dockerfile_path,
+    )
+
+
+def _ensure_smolmachine(image_ref: str, *, dockerfile: str = "") -> Path:
+    """Build the agent docker image and convert it into a
+    `.smolmachine` artifact, caching the result under
+    `~/.cache/bot-bottle/smolmachines/` keyed by the docker image
+    ID (so a Dockerfile change automatically invalidates the cache).
+
+    Returns the `.smolmachine.smolmachine` sidecar path — that's
+    the file `machine create --from` consumes (pack create produces
+    a launcher binary at `.smolmachine` plus the sidecar alongside
+    it; the sidecar is the actual artifact).
+
+    Conversion path: `docker build` (the existing layer cache
+    makes no-change rebuilds cheap) → `docker save` to a tarball
+    → spin up an ephemeral registry on a private docker network →
+    `crane push --insecure` from a one-shot container on the same
+    network → `smolvm pack create --image localhost:<host port>/...`
+    → tear down the registry + network. The crane push detour
+    sidesteps the Docker-Desktop daemon's HTTPS preference for
+    non-loopback registries — see the `local_registry` module
+    docstring for the gory details.
+
+    Each pack-create costs several seconds even on a hot cache,
+    so we skip the whole pipeline when the cached sidecar is
+    already on disk for this image ID."""
+    _SMOLMACHINE_CACHE_DIR.mkdir(parents=True, exist_ok=True)
+    docker_mod.build_image(image_ref, _REPO_DIR, dockerfile=dockerfile)
+    # `sha256:abcd...` -> `abcd...` first 16 chars: short enough to
+    # keep filenames manageable, long enough to make collisions
+    # astronomically unlikely.
+    digest = docker_mod.image_id(image_ref).split(":", 1)[-1][:16]
+    binary = _SMOLMACHINE_CACHE_DIR / f"{digest}.smolmachine"
+    sidecar = _SMOLMACHINE_CACHE_DIR / f"{digest}.smolmachine.smolmachine"
+    if sidecar.is_file():
+        return sidecar
+    tarball = _SMOLMACHINE_CACHE_DIR / f"{digest}.image.tar"
+    docker_mod.save(image_ref, str(tarball))
+    # On Linux, `docker save -o` writes the tarball with owner-only
+    # permissions (mode 600). The crane push container runs as UID
+    # 65532 (distroless nonroot) and can't read it through a bind
+    # mount unless world-read is set. The tarball is temporary and
+    # lives in ~/.cache, so 644 is safe.
+    tarball.chmod(0o644)
+    try:
+        with ephemeral_registry() as handle:
+            push_ref = f"{handle.push_endpoint}/bot-bottle:{digest}"
+            pack_ref = f"{handle.pull_endpoint}/bot-bottle:{digest}"
+            crane_push_tarball(handle, str(tarball), push_ref)
+            _smolvm.pack_create(pack_ref, binary)
+    finally:
+        # Tarball is ~500MB-1GB for the agent image; reclaim once
+        # the smolmachine artifact exists. The artifact itself is
+        # the long-lived cache entry.
+        tarball.unlink(missing_ok=True)
+    return sidecar

bot_bottle/backend/smolmachines/local_registry.py

@@ -0,0 +1,236 @@
+"""Ephemeral local OCI registry for the smolmachines agent-image
+conversion path (PRD 0023 chunk 4c).
+
+`smolvm pack create --image <ref>` only accepts OCI registry refs
+— it can't read the local docker daemon's image cache, an OCI
+layout directory, or a `docker save` tarball. To convert the
+agent's Dockerfile-built image into a `.smolmachine` artifact we
+spin up a short-lived `registry:2.8.3` container alongside a
+`crane` helper container on a private docker network, push via
+`crane push --insecure <tarball> <registry-container>:5000/...`,
+and let smolvm pull from the registry's published host port. The
+network + both containers are torn down after the pack completes.
+
+Why this two-container dance instead of plain `docker push`:
+- Docker Desktop's daemon runs in its own Linux VM, so its
+  `localhost` is not the host's loopback. A registry bound to
+  the host's 127.0.0.1 is unreachable from the daemon side.
+- `host.docker.internal` is reachable from the daemon but isn't
+  in Docker's default insecure-registries CIDRs (only `::1/128`
+  and `127.0.0.0/8` are), so `docker push` to it tries HTTPS,
+  hits a plain-HTTP registry, and dies with
+  `http: server gave HTTP response to HTTPS client`. Adding
+  `host.docker.internal` to daemon.json works but is a one-time
+  manual step the user has to do in Docker Desktop's UI.
+- Going through a docker network sidesteps the host-vs-daemon
+  loopback mismatch (crane and registry containers see each
+  other on the network) AND the HTTPS preference (crane has an
+  `--insecure` flag that forces plain HTTP).
+
+The registry is also published on a random host port so smolvm
+— a host process — can pull from `localhost:<port>` via Docker's
+port-forward. smolvm's bundled crane auto-falls-back to HTTP for
+localhost addresses, so no insecure-registries config is needed
+on that side either."""
+
+from __future__ import annotations
+
+import os
+import socket
+import subprocess
+import time
+import uuid
+from contextlib import contextmanager
+from dataclasses import dataclass
+from typing import Generator
+
+from ...log import die
+
+
+# registry:2.8.3, pinned by digest. Same env-override pattern as the
+# sidecar image pin in bot_bottle/backend/docker/sidecar_bundle.py.
+REGISTRY_IMAGE = os.environ.get(
+    "BOT_BOTTLE_REGISTRY_IMAGE",
+    "registry@sha256:a3d8aaa63ed8681a604f1dea0aa03f100d5895b6a58ace528858a7b332415373",
+)
+
+
+# gcr.io/go-containerregistry/crane:latest, pinned by digest. ~10MB,
+# stable upstream from Google; we only invoke `crane push --insecure`
+# against a localhost-equivalent registry, so the trust surface is
+# narrow.
+CRANE_IMAGE = os.environ.get(
+    "BOT_BOTTLE_CRANE_IMAGE",
+    (
+        "gcr.io/go-containerregistry/crane@sha256:"
+        "0ae17ecb34315aa7cbff28f6eddee3b7adae0b2f90101260d990804db1eb0084"
+    ),
+)
+
+
+# Internal port the registry binds to inside its container — fixed
+# by the registry:2 image. The host-side mapping is random.
+_REGISTRY_CONTAINER_PORT = "5000"
+
+
+# How long to wait for the registry's HTTP layer to bind before
+# giving up. Two seconds is empirically enough; 10s leaves headroom
+# for slow CI runners without making the failure mode chatty.
+_READY_TIMEOUT_S = 10.0
+
+
+@dataclass(frozen=True)
+class RegistryHandle:
+    """Everything callers need to push to + pull from the ephemeral
+    registry.
+
+    `network` is the per-session docker network — a `crane push`
+    container has to join it to reach the registry by name.
+    `push_endpoint` is the `<host>:<port>` form to embed in image
+    refs given to the crane push container (resolves via docker
+    network DNS). `pull_endpoint` is the `<host>:<port>` form a
+    host process (smolvm) uses; the registry's host port mapping
+    backs this."""
+
+    network: str
+    push_endpoint: str
+    pull_endpoint: str
+
+
+@contextmanager
+def ephemeral_registry() -> Generator[RegistryHandle, None, None]:
+    """Bring up a per-session docker network + a `registry:2.8.3`
+    container on it (published on a random host port), yield a
+    `RegistryHandle`, force-remove both on exit.
+
+    The container is started with `--rm` so a clean exit cleans up
+    on its own; the `finally` block force-removes on abnormal exit
+    (the calling process crashes between yield and close)."""
+    session_id = uuid.uuid4().hex[:12]
+    network = f"bot-bottle-registry-net-{session_id}"
+    registry_name = f"bot-bottle-registry-{session_id}"
+
+    subprocess.run(
+        ["docker", "network", "create", network],
+        check=True,
+        capture_output=True,
+    )
+    try:
+        subprocess.run(
+            [
+                "docker", "run", "-d", "--rm",
+                "--name", registry_name,
+                "--network", network,
+                # `-p :5000` (no IP prefix) binds the container's
+                # port 5000 on a random host port across all
+                # interfaces. The host side reaches the registry
+                # via this port — smolvm's `pack create` pulls from
+                # `localhost:<port>` and the docker port-forward
+                # routes there.
+                "-p", _REGISTRY_CONTAINER_PORT,
+                REGISTRY_IMAGE,
+            ],
+            check=True,
+            capture_output=True,
+        )
+        try:
+            port = _host_port(registry_name)
+            _wait_ready(port)
+            yield RegistryHandle(
+                network=network,
+                push_endpoint=f"{registry_name}:{_REGISTRY_CONTAINER_PORT}",
+                pull_endpoint=f"localhost:{port}",
+            )
+        finally:
+            subprocess.run(
+                ["docker", "rm", "-f", registry_name],
+                check=False,
+                capture_output=True,
+            )
+    finally:
+        subprocess.run(
+            ["docker", "network", "rm", network],
+            check=False,
+            capture_output=True,
+        )
+
+
+def crane_push_tarball(handle: RegistryHandle, tarball_path: str, ref: str) -> None:
+    """Run `crane push --insecure <tarball> <ref>` inside a one-shot
+    container on the registry's docker network. `ref` should
+    reference the registry by `handle.push_endpoint` so the crane
+    container resolves it via docker network DNS.
+
+    Doesn't go through `docker push` to avoid the Docker-Desktop
+    daemon's HTTPS preference for non-loopback hostnames — crane's
+    `--insecure` flag forces plain HTTP, which is what the
+    registry container speaks."""
+    r = subprocess.run(
+        [
+            "docker", "run", "--rm",
+            "--network", handle.network,
+            "-v", f"{tarball_path}:/img.tar:ro",
+            CRANE_IMAGE,
+            "push", "--insecure", "/img.tar", ref,
+        ],
+        capture_output=True,
+        text=True,
+        check=False,
+    )
+    if r.returncode != 0:
+        die(
+            f"crane push of {tarball_path!r} to {ref!r} failed: "
+            f"{(r.stderr or r.stdout or '').strip() or '<no output>'}"
+        )
+
+
+def _host_port(name: str) -> int:
+    """Resolve the host-side port docker mapped to the registry's
+    container port. `docker port <name> 5000/tcp` returns one or
+    more `host:port` lines (one per address family) — we take the
+    first."""
+    r = subprocess.run(
+        ["docker", "port", name, f"{_REGISTRY_CONTAINER_PORT}/tcp"],
+        capture_output=True,
+        text=True,
+        check=False,
+    )
+    if r.returncode != 0:
+        die(
+            f"docker port {name} {_REGISTRY_CONTAINER_PORT}/tcp failed: "
+            f"{(r.stderr or '').strip() or '<no stderr>'}"
+        )
+    # `0.0.0.0:54321\n[::]:54321\n` — split on the last colon to
+    # handle either IPv4 or IPv6 host syntax.
+    line = (r.stdout or "").splitlines()[0].strip()
+    _, _, port_str = line.rpartition(":")
+    try:
+        return int(port_str)
+    except ValueError:
+        die(f"unexpected `docker port` output: {line!r}")
+
+
+def _wait_ready(port: int) -> None:
+    """Block until the registry's HTTP layer accepts a TCP
+    connection on `127.0.0.1:<port>`, or `_READY_TIMEOUT_S`
+    elapses.
+
+    A successful TCP connect is sufficient — registry:2.8.3 binds
+    after it's ready to serve `/v2/` requests, so the push that
+    follows will land on a working server. We probe loopback
+    specifically (not via the docker network) because this helper
+    runs on the host."""
+    deadline = time.monotonic() + _READY_TIMEOUT_S
+    last_err: Exception | None = None
+    while time.monotonic() < deadline:
+        try:
+            with socket.create_connection(("127.0.0.1", port), timeout=0.5):
+                return
+        except OSError as e:
+            last_err = e
+            time.sleep(0.1)
+    die(
+        f"local registry on 127.0.0.1:{port} did not accept "
+        f"connections within {_READY_TIMEOUT_S:.0f}s "
+        f"(last error: {last_err})"
+    )

bot_bottle/backend/smolmachines/loopback_alias.py

@@ -0,0 +1,314 @@
+"""Per-bottle loopback alias allocation + TSI allowlist
+enforcement (PRD 0023, follow-up to PR #74).
+
+After the pivot to host-loopback port-forwards, the smolmachines
+TSI allowlist was `127.0.0.1/32` — which meant the agent VM could
+reach **any** service bound to macOS's loopback, not just the
+bundle's published ports. Real downgrade from the docker
+backend's `--internal` network isolation.
+
+This module narrows the allowlist by allocating each bottle a
+unique loopback alias (`127.0.0.16` .. `127.0.0.31`). The
+bundle's port-forwards bind to that alias, and the alias's /32
+is what TSI allows.
+
+**Smolvm 0.8.0 quirk + workaround.** `smolvm machine create
+--from <smolmachine> --net --allow-cidr X/32` silently drops the
+flag — verified empirically that the agent process's allowlist
+ends up `null` in smolvm's persistent state DB (`~/Library/
+Application Support/smolvm/server/smolvm.db`, `vms` table,
+`data` BLOB), and the booted VM reaches all of `127.0.0.0/8`
+regardless of what we passed. Workaround: after machine_create,
+open the SQLite DB and patch the row's `allowed_cidrs` field
+directly. Smolvm reads the DB at machine_start, so the patched
+value takes effect on boot. Tested: enforcement is real — the
+guest's connect to a non-allowlisted IP fails with `Permission
+denied`. Other paths we tried (machine update, stop-edit-
+agent.config.json-restart, --smolfile, --image localhost:N/...)
+were dead ends.
+
+macOS only configures `127.0.0.1` on `lo0` by default; the
+additional aliases require `sudo ifconfig lo0 alias`. We lazily
+sudo-add the missing pool on first use per boot — the aliases
+persist on `lo0` until reboot, so subsequent launches don't
+prompt.
+
+On Linux the whole `127.0.0.0/8` is already routed to `lo`, so
+docker can publish a bundle's ports directly on `127.0.0.<N>`
+with no `ifconfig`/sudo step. `ensure_pool` is therefore a no-op
+on Linux, but per-bottle alias *allocation* and the TSI allowlist
+DB patch run on both platforms — the isolation property is
+identical, it's just cheaper to set up on Linux. The state-DB
+path differs per platform (see `_smolvm_db_path`).
+
+Allocation is coordinated by inspecting running bundle
+containers' published host IPs — each bottle's bundle owns the
+alias appearing in its port bindings. The lowest-numbered free
+alias gets handed to a new bottle."""
+
+from __future__ import annotations
+
+import fcntl
+import json
+import os
+import platform
+import re
+import sqlite3
+import subprocess
+from pathlib import Path
+from typing import Iterable
+
+from ...log import die, info
+
+
+def _smolvm_db_path() -> Path:
+    """smolvm's persistent VM state — a SQLite DB whose `vms` table
+    holds one JSON BLOB per machine. macOS stores it under
+    `Application Support`; Linux follows the XDG base-dir spec
+    (`$XDG_DATA_HOME`, default `~/.local/share`).
+
+    NOTE: the Linux location is inferred from smolvm's documented
+    `~/.local/share` install layout and must be confirmed against a
+    real Linux smolvm install. If it's wrong, `force_allowlist`'s
+    fail-closed check turns it into a clear launch-time error rather
+    than a silent escape."""
+    if platform.system() == "Darwin":
+        return (
+            Path.home()
+            / "Library"
+            / "Application Support"
+            / "smolvm"
+            / "server"
+            / "smolvm.db"
+        )
+    xdg_data = os.environ.get("XDG_DATA_HOME")
+    base = Path(xdg_data) if xdg_data else Path.home() / ".local" / "share"
+    return base / "smolvm" / "server" / "smolvm.db"
+
+
+# Resolved once at import: the host platform doesn't change within a
+# process. Tests patch this attribute directly.
+_SMOLVM_DB_PATH = _smolvm_db_path()
+
+
+# Sixteen aliases by default. Tunable for hosts that want more
+# concurrent bottles (each bottle reserves one alias for its
+# bundle bringup). The range is chosen to avoid the reserved
+# 127.0.0.1/2/3 ports (1 is the default, 2 is sometimes used by
+# CUPS, 3 by other macOS services) and stay well clear of
+# 127.0.0.53 (systemd-resolved) and 127.0.0.54 (libvirt).
+_POOL_START = 16
+_POOL_END = 31  # inclusive
+
+
+# File lock that serialises concurrent allocate() calls so two
+# simultaneous launches can't read the same docker state and claim
+# the same alias. Narrowed to the allocate() call itself; docker run
+# runs after the lock is released. Once the container is running it
+# appears in docker state and future allocate() calls will see it.
+_ALLOC_LOCK_PATH = Path.home() / ".cache" / "bot-bottle" / "smolmachines.lock"
+
+
+# Loopback aliases pool: 127.0.0.<start>..127.0.0.<end>.
+def _pool_addresses() -> list[str]:
+    return [f"127.0.0.{i}" for i in range(_POOL_START, _POOL_END + 1)]
+
+
+def _is_macos() -> bool:
+    return platform.system() == "Darwin"
+
+
+def ensure_pool() -> None:
+    """Make sure each address in the pool is up on `lo0`. Lazily
+    runs `sudo ifconfig lo0 alias <ip>/32 up` for missing entries
+    (sudo prompts once, then the aliases persist on lo0 until
+    reboot). No-op on non-macOS hosts."""
+    if not _is_macos():
+        return
+    missing = [ip for ip in _pool_addresses() if not _alias_present(ip)]
+    if not missing:
+        return
+    info(
+        f"smolmachines needs {len(missing)} loopback alias(es) on lo0 "
+        f"({', '.join(missing[:3])}{', ...' if len(missing) > 3 else ''}) "
+        f"to scope per-bottle TSI allowlists. sudo will prompt once; "
+        f"aliases persist until reboot."
+    )
+    for ip in missing:
+        result = subprocess.run(
+            ["sudo", "-p", "bot-bottle (loopback alias): ",
+             "ifconfig", "lo0", "alias", f"{ip}/32", "up"],
+            check=False,
+        )
+        if result.returncode != 0:
+            die(
+                f"sudo ifconfig lo0 alias {ip} failed (exit "
+                f"{result.returncode}). Re-run with sudo available, "
+                f"or add manually: sudo ifconfig lo0 alias {ip}/32 up"
+            )
+
+
+def force_allowlist(machine_name: str, allowed_cidrs: list[str]) -> None:
+    """Ensure the machine's persisted TSI allowlist equals
+    `allowed_cidrs`, failing **closed** if that can't be confirmed.
+
+    Runs on both macOS and Linux. It exists because smolvm 0.8.0
+    silently drops `--allow-cidr` when combined with `--from`, so
+    the allowlist has to be written into smolvm's persistent state
+    DB before `machine start`. Rather than assume the flag was
+    dropped, we read the persisted row and only patch when it
+    doesn't already match — so a newer smolvm that honors the flag
+    is left untouched.
+
+    Must run AFTER `smolvm machine create` (the row has to exist)
+    and BEFORE `smolvm machine start` (smolvm reads the row on
+    start; in-flight VMs don't pick up changes).
+
+    Fail-closed: if the state DB is missing, the row is missing, or
+    the allowlist still doesn't match after patching, we `die()`
+    rather than boot a VM whose egress confinement we can't verify
+    — an unconfirmed allowlist is a sandbox-escape risk (the agent
+    VM could reach all of host loopback)."""
+    want = list(allowed_cidrs)
+    if not _SMOLVM_DB_PATH.is_file():
+        die(
+            f"smolvm state DB not found at {_SMOLVM_DB_PATH}; cannot "
+            f"confirm the TSI allowlist is enforced. Refusing to launch "
+            f"(fail-closed). Check `smolvm --version` and the DB "
+            f"location for your platform."
+        )
+    con = sqlite3.connect(str(_SMOLVM_DB_PATH))
+    try:
+        cfg = _read_machine_cfg(con, machine_name)
+        if cfg.get("allowed_cidrs") != want:
+            cfg["allowed_cidrs"] = want
+            # Write as BLOB (the column type smolvm uses) — passing a
+            # plain str makes sqlite store it as Text and smolvm then
+            # fails to read it.
+            con.execute(
+                "UPDATE vms SET data = ? WHERE name = ?",
+                (sqlite3.Binary(json.dumps(cfg).encode()), machine_name),
+            )
+            con.commit()
+            cfg = _read_machine_cfg(con, machine_name)
+        if cfg.get("allowed_cidrs") != want:
+            die(
+                f"could not enforce TSI allowlist {want!r} for machine "
+                f"{machine_name!r} (persisted value is "
+                f"{cfg.get('allowed_cidrs')!r}). Refusing to launch "
+                f"(fail-closed)."
+            )
+    finally:
+        con.close()
+
+
+def _read_machine_cfg(con: sqlite3.Connection, machine_name: str) -> dict[str, object]:
+    """Read + JSON-decode a machine's `data` BLOB from the smolvm
+    state DB. Dies (fail-closed) if the row is missing — the caller
+    can't confirm enforcement without it."""
+    row = con.execute(
+        "SELECT data FROM vms WHERE name = ?", (machine_name,),
+    ).fetchone()
+    if row is None:
+        die(
+            f"smolvm DB has no row for machine {machine_name!r} — "
+            f"machine_create must run before force_allowlist."
+        )
+    return json.loads(row[0])
+
+
+def allocate(_slug: str) -> str:
+    """Pick the lowest-numbered alias from the pool not already
+    in use by a running smolmachines bundle. Bails when the pool
+    is exhausted — the caller should report the limit to the
+    operator. `_slug` is logged for traceability; not otherwise
+    used (no on-disk reservation, allocation is purely
+    docker-state-driven).
+
+    Runs on both platforms: the allocation logic (docker-state
+    inspection + the file lock) is platform-independent. macOS
+    needs `ensure_pool` to have aliased the addresses on `lo0`
+    first; on Linux all of `127.0.0.0/8` is already loopback, so
+    docker can publish on the chosen `127.0.0.<N>` with no setup.
+    Per-bottle scoping (so the agent can't reach other bottles' or
+    host services' loopback ports) therefore holds on both.
+
+    An exclusive file lock serialises concurrent calls so two
+    simultaneous launches don't read the same docker state and
+    claim the same alias."""
+    _ALLOC_LOCK_PATH.parent.mkdir(parents=True, exist_ok=True)
+    with open(_ALLOC_LOCK_PATH, "w", encoding="utf-8") as lf:
+        fcntl.flock(lf, fcntl.LOCK_EX)
+        return _allocate_locked()
+
+
+def _allocate_locked() -> str:
+    in_use = _aliases_in_use()
+    for ip in _pool_addresses():
+        if ip not in in_use:
+            return ip
+    die(
+        f"smolmachines loopback alias pool exhausted "
+        f"({_POOL_END - _POOL_START + 1} aliases, all in use). "
+        f"Stop a running bottle (`smolvm machine ls --json`) or "
+        f"raise _POOL_END in loopback_alias.py."
+    )
+
+
+def _alias_present(ip: str) -> bool:
+    """True iff `ifconfig lo0` shows `<ip>` as an inet address.
+    Exact-match — `127.0.0.1` shouldn't match `127.0.0.16`."""
+    result = subprocess.run(
+        ["/sbin/ifconfig", "lo0"],
+        capture_output=True, text=True, check=False,
+    )
+    if result.returncode != 0:
+        return False
+    pattern = re.compile(rf"\binet {re.escape(ip)}\b")
+    return bool(pattern.search(result.stdout or ""))
+
+
+def _aliases_in_use() -> set[str]:
+    """Aliases already bound by another smolmachines bundle's
+    published-port mappings. We inspect every container whose
+    name matches the smolmachines bundle prefix and pull the
+    `HostIp` out of its port bindings."""
+    result = subprocess.run(
+        ["docker", "ps", "--format", "{{.Names}}",
+         "--filter", "name=bot-bottle-sidecars-"],
+        capture_output=True, text=True, check=False,
+    )
+    if result.returncode != 0:
+        return set()
+    names = [n.strip() for n in (result.stdout or "").splitlines() if n.strip()]
+    in_use: set[str] = set()
+    for name in names:
+        in_use.update(_host_ips_for_container(name))
+    return in_use
+
+
+def _host_ips_for_container(name: str) -> Iterable[str]:
+    """Yield the `HostIp` values across all port bindings on
+    container `name`. A bundle binds three or four ports and
+    they all share the same HostIp, so callers can take any."""
+    result = subprocess.run(
+        ["docker", "inspect", name,
+         "--format", "{{json .HostConfig.PortBindings}}"],
+        capture_output=True, text=True, check=False,
+    )
+    if result.returncode != 0:
+        return ()
+    try:
+        bindings = json.loads(result.stdout or "{}")
+    except json.JSONDecodeError:
+        return ()
+    seen: set[str] = set()
+    for _port, mappings in (bindings or {}).items():
+        for m in mappings or []:
+            host_ip = m.get("HostIp") or ""
+            if host_ip:
+                seen.add(host_ip)
+    return seen
+
+
+__all__ = ["allocate", "ensure_pool", "force_allowlist"]

bot_bottle/backend/smolmachines/provision/__init__.py

@@ -0,0 +1,12 @@
+"""Backend-infrastructure provisioners for the smolmachines backend.
+
+Per PRD 0050 the per-provider provisioning steps (prompt, skills,
+declarative provision-plan apply, supervise MCP registration) live on
+the `AgentProvider` plugin under `bot_bottle/contrib/`. CA and git
+provisioning also moved to the AgentProvider ABC (with Debian/node
+defaults); user plugins override them for non-standard images.
+
+No modules remain in this subpackage. Workspace copying now runs
+through `BottleBackend.provision_workspace` against the running
+bottle for every backend.
+"""

bot_bottle/backend/smolmachines/pty_resize.py

@@ -0,0 +1,151 @@
+"""Host-side SIGWINCH → in-VM PTY resize bridge (issue #82).
+
+smolvm 0.8.0 `machine exec -t` allocates an in-VM PTY but never
+forwards the host terminal's window size (TIOCSWINSZ) to it. The
+PTY's initial size is `0 0`, and any host-side resize during the
+session goes unnoticed — the in-VM claude TUI keeps rendering for
+whatever (typically tiny) box it last saw, ignoring the operator's
+tmux pane resize. `docker exec -it` does this forwarding
+automatically; smolvm doesn't.
+
+This module wraps `smolvm machine exec` with a thin parent
+process that:
+
+  1. Spawns the original argv as a child (it gets the inherited
+     TTY, so claude's stdin/stdout/stderr work unchanged).
+  2. On startup + every host SIGWINCH, reads the host terminal
+     size via TIOCGWINSZ on stdin (or stderr if stdin isn't a
+     TTY — tmux respawn-pane gives us a TTY on stdout/stderr)
+     and pushes it into the VM with a side-channel
+     `smolvm machine exec -- sh -c 'for f in /dev/pts/*; do
+     stty -F $f cols X rows Y; done'`. The kernel delivers
+     SIGWINCH to the foreground process group on the slave end
+     automatically, so claude picks up the new size without
+     extra signalling.
+  3. Waits on the child and exits with its returncode.
+
+The dashboard's tmux pane respawn calls `bottle.agent_argv`
+which now prepends `[sys.executable, -m, ..., <machine>, --, ...]`
+to the smolvm argv. Foreground handoff (curses endwin →
+subprocess.run) goes through the same path so behavior is
+identical.
+
+Removable once smolvm grows native SIGWINCH forwarding (upstream
+follow-up tracked separately)."""
+
+from __future__ import annotations
+
+import fcntl
+import signal
+import struct
+import subprocess
+import sys
+import termios
+import threading
+from types import FrameType
+
+
+# How long to wait after the main exec starts before pushing the
+# initial size. Concurrent `smolvm machine exec` invocations race
+# libkrun's per-exec OCI config write during the main exec's
+# bringup window; the side-channel firing immediately corrupts
+# `config.json` and the main exec dies with SIGKILL (rc=137) or
+# libkrun's "parse error: trailing garbage" depending on
+# scheduling. Two seconds is well past the bringup window on a
+# warm VM, well under the operator's "this is unresponsive"
+# threshold, and short enough that claude's initial render
+# almost always fires after the size has been set.
+_STARTUP_SYNC_DELAY_SEC = 2.0
+
+
+def _read_winsize() -> tuple[int, int] | None:
+    """Return `(rows, cols)` from whichever of stdin / stdout /
+    stderr is a TTY, or None if none are. Different invocation
+    surfaces give us different TTYs:
+
+      - foreground handoff (curses endwin → subprocess.run): all
+        three are the operator's terminal.
+      - tmux respawn-pane: tmux sets all three to the pane's PTY.
+      - non-TTY (someone piped stdin in tests): none are; the
+        sync just no-ops, which is the right behavior."""
+    for stream in (sys.stdin, sys.stdout, sys.stderr):
+        try:
+            fd = stream.fileno()
+            data = fcntl.ioctl(fd, termios.TIOCGWINSZ, b"\x00" * 8)
+        except OSError:
+            continue
+        rows, cols, _, _ = struct.unpack("hhhh", data)
+        if rows > 0 and cols > 0:
+            return rows, cols
+    return None
+
+
+def _push_size(machine: str, rows: int, cols: int) -> None:
+    """Side-channel `smolvm machine exec` that sets the size of
+    every PTY in the VM. The shell `for` loop covers the case of
+    multiple concurrent interactive sessions (rare but cheap to
+    handle); `stty -F` returns silently on PTYs that don't apply.
+
+    Best-effort: swallow failures. A failed resize doesn't break
+    the session — it just leaves the in-VM PTY at its old size.
+
+    `stdin=DEVNULL` is load-bearing: under tmux, inheriting the
+    pane PTY here means two concurrent smolvm processes (this one
+    and the agent session the wrapper is shepherding) share the
+    PTY's foreground-process-group / input plumbing, and smolvm
+    bails with an internal config-parse error or SIGKILL within
+    ~100ms of the side-channel firing. Outside tmux the same
+    pattern survived, presumably because iTerm's PTY plumbing is
+    more forgiving than tmux's, but the DEVNULL is the right
+    default either way — the side-channel never needs stdin."""
+    subprocess.run(
+        ["smolvm", "machine", "exec", "--name", machine, "--",
+         "sh", "-c",
+         f"for f in /dev/pts/*; do "
+         f"stty -F \"$f\" cols {cols} rows {rows} 2>/dev/null; "
+         f"done"],
+        stdin=subprocess.DEVNULL,
+        stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL,
+        check=False,
+    )
+
+
+def main(argv: list[str]) -> int:
+    """Entry point. `argv` shape: `<machine> -- <smolvm-argv...>`.
+
+    We don't use argparse — the `--` separator is the contract and
+    everything past it is forwarded verbatim. Keeps the wrapper
+    transparent for callers building argv programmatically."""
+    if len(argv) < 3 or argv[1] != "--":
+        sys.stderr.write(
+            "usage: python -m bot_bottle.backend.smolmachines.pty_resize "
+            "<machine> -- <smolvm-argv...>\n"
+        )
+        return 2
+    machine = argv[0]
+    inner = argv[2:]
+
+    def sync(_signum: int | None = None, _frame: FrameType | None = None) -> None:
+        size = _read_winsize()
+        if size is None:
+            return
+        _push_size(machine, *size)
+
+    signal.signal(signal.SIGWINCH, sync)  # type: ignore[arg-type]
+
+    proc = subprocess.Popen(inner)
+    # Initial sync is deferred — see _STARTUP_SYNC_DELAY_SEC.
+    # daemon=True so the timer doesn't block exit when the child
+    # finishes before the delay elapses.
+    timer = threading.Timer(_STARTUP_SYNC_DELAY_SEC, sync)
+    timer.daemon = True
+    timer.start()
+    while True:
+        try:
+            return proc.wait()
+        except KeyboardInterrupt:
+            proc.send_signal(signal.SIGINT)
+
+
+if __name__ == "__main__":
+    sys.exit(main(sys.argv[1:]))

bot_bottle/backend/smolmachines/resolve_plan.py

@@ -0,0 +1,83 @@
+"""smolmachines `_resolve_plan` (PRD 0023 chunks 2d + 4c).
+
+Resolves the per-bottle docker subnet + bundle IP and assembles
+the guest env. The agent's docker image build → smolmachine
+pack pipeline runs in `launch.launch`, not here, so the
+dashboard's preflight modal isn't garbled by docker-build output
+before the operator has confirmed.
+
+No VM bringup — that's `launch.launch`'s job."""
+
+from __future__ import annotations
+
+from pathlib import Path
+
+from .. import BottleSpec
+from ...manifest import Manifest
+from ...env import ResolvedEnv
+from ...agent_provider import AgentProvisionPlan
+from ...egress import EgressPlan
+from ...supervise import SupervisePlan
+from ...git_gate import GitGatePlan
+from .bottle_plan import SmolmachinesBottlePlan
+from .util import smolmachines_bundle_subnet, smolmachines_preflight
+
+def preflight() -> None:
+    smolmachines_preflight()
+
+
+def build_guest_env(resolved_env: ResolvedEnv) -> dict[str, str]:
+    # Agent's env: resolve through resolve_env() so ?prompt entries
+    # are prompted and ${HOST_VAR} entries are interpolated — matching
+    # the Docker backend's contract. Forwarded (secret/interpolated)
+    # values still reach the guest as -e K=V smolvm flags because
+    # smolvm 0.8.0 has no env-file or stdin injection path; this is
+    # the known argv-exposure gap documented in PRD 0038.
+    # HTTPS_PROXY / GIT_GATE_URL / MCP_SUPERVISE_URL are populated
+    # in launch.py after bundle bringup.
+    return {
+        **resolved_env.literals,
+        **resolved_env.forwarded,
+        "NO_PROXY":    "localhost,127.0.0.1",
+        "NODE_EXTRA_CA_CERTS": "/etc/ssl/certs/ca-certificates.crt",
+        "SSL_CERT_FILE":       "/etc/ssl/certs/ca-certificates.crt",
+        "REQUESTS_CA_BUNDLE":  "/etc/ssl/certs/ca-certificates.crt",
+    }
+
+
+def resolve_plan(
+    spec: BottleSpec,
+    manifest: Manifest,
+    slug: str,
+    resolved_env: ResolvedEnv,
+    agent_provision_plan: AgentProvisionPlan,
+    egress_plan: EgressPlan,
+    supervise_plan: SupervisePlan | None,
+    git_gate_plan: GitGatePlan,
+    stage_dir: Path,
+) -> SmolmachinesBottlePlan:
+    """Materialize the smolmachines plan. The bundle's docker
+    subnet + pinned IP are derived from the slug; the agent's
+    `.smolmachine` artifact is built (or cache-hit) here so
+    launch's `machine create --from` boots without a registry
+    pull. Per-bottle guest env + the TSI allow_cidrs land on the
+    plan for launch to pass straight through to
+    `machine create` flags."""
+
+    # ==== smolmachines specific setup ====
+    subnet, gateway, bundle_ip = smolmachines_bundle_subnet(slug)
+
+    return SmolmachinesBottlePlan(
+        spec=spec,
+        manifest=manifest,
+        stage_dir=stage_dir,
+        slug=slug,
+        bundle_subnet=subnet,
+        bundle_gateway=gateway,
+        bundle_ip=bundle_ip,
+        guest_env=agent_provision_plan.guest_env,
+        git_gate_plan=git_gate_plan,
+        egress_plan=egress_plan,
+        supervise_plan=supervise_plan,
+        agent_provision=agent_provision_plan,
+    )

bot_bottle/backend/smolmachines/sidecar_bundle.py

@@ -0,0 +1,242 @@
+"""Per-bottle sidecar bundle bringup for the smolmachines backend
+(PRD 0023).
+
+Two docker resources per bottle live here:
+
+  - **A dedicated bridge network**, subnet derived from the slug.
+    The bundle container gets a pinned IP at `<subnet>.2` so the
+    smolvm guest's TSI allowlist (`<bundle-ip>/32`) has a stable
+    target. Without pinning, we'd have to inspect the container's
+    assigned IP after start and feed it back into the Smolfile
+    — a race we can sidestep with `--ip`.
+
+  - **The bundle container itself**, running the PRD 0024 bundle
+    image (`bot-bottle-sidecars:latest` by default). Same
+    image, same daemons, same daemon-private env / bind-mounts
+    as the docker backend.
+
+This module ships the lifecycle primitives only — create
+network, start bundle, stop bundle, remove network — wrapped
+around `subprocess.run(["docker", ...])`. Wiring them into the
+launch flow + populating the `BundleLaunchSpec` from the inner
+Plans (EgressPlan, …) lands in chunk 2d."""
+
+from __future__ import annotations
+
+import subprocess
+from dataclasses import dataclass, field
+from pathlib import Path
+from typing import Sequence
+
+from ...log import die, warn
+from ..docker import util as docker_mod
+from ..docker.sidecar_bundle import (
+    SIDECAR_BUNDLE_DOCKERFILE,
+    SIDECAR_BUNDLE_IMAGE,
+)
+
+
+_REPO_DIR = str(Path(__file__).resolve().parent.parent.parent.parent)
+
+
+def bundle_network_name(slug: str) -> str:
+    """`bot-bottle-bundle-<slug>` — distinct from the docker
+    backend's `bot-bottle-net-<slug>` so a smolmachines bottle
+    and a docker bottle for the same agent don't collide on
+    network name."""
+    return f"bot-bottle-bundle-{slug}"
+
+
+def bundle_container_name(slug: str) -> str:
+    """`bot-bottle-sidecars-<slug>` — same name shape the docker
+    backend uses for the bundle (PRD 0024 chunk 5). The dashboard's
+    prefix-based discovery covers both backends with one filter."""
+    return f"bot-bottle-sidecars-{slug}"
+
+
+@dataclass(frozen=True)
+class BundleLaunchSpec:
+    """Everything `start_bundle` needs to bring up one bundle
+    container. Populated by chunk-2d's launch flow from the inner
+    Plans the prepare step already produces."""
+
+    slug: str
+    network_name: str
+    subnet: str
+    gateway: str
+    bundle_ip: str
+    image: str = SIDECAR_BUNDLE_IMAGE
+    # Daemon subset CSV for BOT_BOTTLE_SIDECAR_DAEMONS. The
+    # supervisor inside the bundle reads it to skip
+    # bottle-irrelevant daemons (e.g. supervise=False bottles).
+    daemons_csv: str = "egress"
+    # Plain "KEY=VALUE" strings + "KEY" bare names (the bare-name
+    # form inherits the value from the docker-run subprocess env,
+    # matching the docker backend's compose-up secret-forwarding
+    # pattern).
+    environment: Sequence[str] = field(default_factory=tuple)
+    # (host_path, container_path, read_only) bind mounts.
+    volumes: Sequence[tuple[str, str, bool]] = field(default_factory=tuple)
+    # Container ports to publish on `publish_host_ip`, random
+    # host-side port per entry. The smolvm guest's TSI talks via
+    # macOS networking, so docker container IPs (192.168.x.x in
+    # the daemon's bridge) aren't directly reachable from the
+    # guest — host-loopback port-forwards are. Egress's port
+    # is bundle-internal and never published.
+    ports_to_publish: Sequence[int] = field(default_factory=tuple)
+    # Loopback IP to bind published ports against. Per-bottle
+    # loopback aliases (`127.0.0.16` etc., added via sudo
+    # ifconfig lo0 alias) narrow the TSI allowlist so a bottle
+    # can't reach other bottles' (or other host services') ports
+    # via 127.0.0.1.
+    publish_host_ip: str = "127.0.0.1"
+
+
+def ensure_bundle_image(image: str = SIDECAR_BUNDLE_IMAGE) -> None:
+    """Build the sidecar bundle image before `docker run`.
+
+    The Docker backend gets this for free from compose's `build:`
+    stanza. smolmachines starts the bundle with plain `docker run`,
+    so without an explicit build a first launch tries to pull the
+    local-only `bot-bottle-sidecars:latest` tag from a registry.
+    """
+    docker_mod.build_image(
+        image,
+        _REPO_DIR,
+        dockerfile=SIDECAR_BUNDLE_DOCKERFILE,
+    )
+
+
+def create_bundle_network(network_name: str, subnet: str, gateway: str) -> None:
+    """`docker network create` with an explicit subnet + gateway
+    so the bundle's `--ip` lands on the address the Smolfile's
+    TSI allowlist points at. Idempotent on the caller's side —
+    `start_bundle` catches the "network exists" error and treats
+    it as success (chunk-2d teardown is paired with each create).
+    """
+    result = subprocess.run(
+        ["docker", "network", "create",
+         "--subnet", subnet, "--gateway", gateway,
+         network_name],
+        capture_output=True, text=True, check=False,
+    )
+    if result.returncode != 0:
+        # Already-exists is fine on a resume path; everything else
+        # is fatal — the bundle won't have an addressable network.
+        if "already exists" in (result.stderr or "").lower():
+            return
+        die(
+            f"docker network create {network_name} failed: "
+            f"{(result.stderr or '').strip()}"
+        )
+
+
+def remove_bundle_network(network_name: str) -> None:
+    """Idempotent: a missing network returns success."""
+    result = subprocess.run(
+        ["docker", "network", "rm", network_name],
+        capture_output=True, text=True, check=False,
+    )
+    if result.returncode == 0:
+        return
+    if "no such network" in (result.stderr or "").lower():
+        return
+    # Network with attached containers is the common non-fatal
+    # case during a partial teardown — warn but don't die.
+    warn(
+        f"docker network rm {network_name} failed: "
+        f"{(result.stderr or '').strip()}"
+    )
+
+
+def start_bundle(spec: BundleLaunchSpec, *,
+                 env: dict[str, str] | None = None) -> None:
+    """Bring the bundle container up on the per-bottle bridge with
+    the pinned IP. Argv is built deterministically from `spec`;
+    `env` is the host subprocess env (forwarded values for any
+    bare-name entries in `spec.environment`)."""
+    container = bundle_container_name(spec.slug)
+    argv = [
+        "docker", "run",
+        "--name", container,
+        "--detach",
+        "--rm",
+        "--network", spec.network_name,
+        "--ip", spec.bundle_ip,
+        "-e", f"BOT_BOTTLE_SIDECAR_DAEMONS={spec.daemons_csv}",
+    ]
+    for entry in spec.environment:
+        argv += ["-e", entry]
+    for host_path, container_path, read_only in spec.volumes:
+        suffix = ":ro" if read_only else ""
+        argv += ["-v", f"{host_path}:{container_path}{suffix}"]
+    # Loopback-only host port-forwards — the smolvm guest's TSI
+    # uses macOS networking, and macOS loopback is the only host
+    # surface that round-trips into Docker Desktop's daemon VM.
+    # Binds to the per-bottle alias so TSI's IP-only allowlist
+    # narrows reachability to this bottle's bundle only.
+    for port in spec.ports_to_publish:
+        argv += ["-p", f"{spec.publish_host_ip}::{port}"]
+    argv.append(spec.image)
+    result = subprocess.run(
+        argv, capture_output=True, text=True,
+        env=dict(env) if env is not None else None, check=False,
+    )
+    if result.returncode != 0:
+        die(
+            f"docker run for bundle {container} failed: "
+            f"{(result.stderr or '').strip()}"
+        )
+
+
+def bundle_host_port(
+    slug: str, container_port: int, *, host_ip: str = "127.0.0.1",
+) -> int:
+    """`docker port <bundle> <container_port>/tcp` → the random
+    host-side port docker assigned for the binding on `host_ip`.
+    Called after `start_bundle` on each container port listed in
+    `BundleLaunchSpec.ports_to_publish` so the launch step can
+    build the agent's HTTPS_PROXY / GIT_GATE / SUPERVISE URLs in
+    `<host_ip>:<host port>` form."""
+    container = bundle_container_name(slug)
+    result = subprocess.run(
+        ["docker", "port", container, f"{container_port}/tcp"],
+        capture_output=True, text=True, check=False,
+    )
+    if result.returncode != 0:
+        die(
+            f"docker port {container} {container_port}/tcp failed: "
+            f"{(result.stderr or '').strip() or '<no stderr>'}"
+        )
+    # Each line looks like `127.0.0.16:54321` — one per address
+    # family / host IP. Match on the expected host_ip prefix so
+    # bottles bound to per-bottle aliases pick the right line.
+    for raw in (result.stdout or "").splitlines():
+        line = raw.strip()
+        if line.startswith(f"{host_ip}:"):
+            _, _, port_str = line.rpartition(":")
+            try:
+                return int(port_str)
+            except ValueError:
+                die(f"unexpected `docker port` output: {line!r}")
+    die(
+        f"no port mapping on {host_ip} for {container} "
+        f"{container_port}/tcp; got: {(result.stdout or '').strip()!r}"
+    )
+
+
+def stop_bundle(slug: str) -> None:
+    """Idempotent: a missing container returns success."""
+    container = bundle_container_name(slug)
+    result = subprocess.run(
+        ["docker", "rm", "-f", container],
+        capture_output=True, text=True, check=False,
+    )
+    if result.returncode == 0:
+        return
+    if "no such container" in (result.stderr or "").lower():
+        return
+    warn(
+        f"docker rm -f {container} failed: "
+        f"{(result.stderr or '').strip()}"
+    )

bot_bottle/backend/smolmachines/smolvm.py

@@ -0,0 +1,268 @@
+"""Thin subprocess wrapper around the `smolvm` CLI (PRD 0023).
+
+One thin Python function per smolvm subcommand the launch flow
+needs. Two design choices worth flagging:
+
+  - **No daemon, no SDK.** smolvm 0.8.0 ships a `smolvm serve`
+    HTTP API as the long-term-clean integration target. The
+    project's stdlib-first ethos + the lower-overhead CLI calls
+    push v1 to shell out via `subprocess.run`. If a future
+    smolvm release makes `serve` mandatory (or significantly
+    faster), revisit.
+
+  - **Two return shapes.** `SmolvmRunResult` (returncode + stdout
+    + stderr captured) is returned by `machine_exec` because the
+    caller cares about the in-VM command's exit status, and by
+    test helpers that introspect output. The other calls
+    (`machine_start`, `machine_stop`, `pack_create`, etc.) raise
+    `SmolvmError` on non-zero exit — failure to start a VM is
+    fatal to the launch flow, not something callers want to
+    branch on.
+
+The wrapper is unit-tested with `subprocess.run` mocked; the
+integration smoke test (chunk 2d) exercises against a real
+smolvm binary."""
+
+from __future__ import annotations
+
+import json
+import shutil
+import subprocess
+import time
+from dataclasses import dataclass
+from pathlib import Path
+from typing import Mapping, Sequence
+
+
+
+_SMOLVM = "smolvm"
+
+
+@dataclass(frozen=True)
+class SmolvmRunResult:
+    """Captured result of an in-VM command. Mirrors the structure
+    `Bottle.exec` returns so callers can hand it straight through."""
+    returncode: int
+    stdout: str
+    stderr: str
+
+
+class SmolvmError(RuntimeError):
+    """Raised when a smolvm subprocess returns non-zero on a path
+    where the caller has no useful branch to take (start failed,
+    pack failed, etc.). Carries the captured stderr for the
+    operator-facing log line."""
+
+    def __init__(self, argv: Sequence[str], result: subprocess.CompletedProcess[str]):
+        self.argv = list(argv)
+        self.returncode = result.returncode
+        self.stdout = result.stdout
+        self.stderr = result.stderr
+        cmd = " ".join(self.argv)
+        super().__init__(
+            f"{cmd!r} failed (exit {result.returncode}): "
+            f"{(result.stderr or '').strip() or '<no stderr>'}"
+        )
+
+
+def _smolvm(*args: str, env: Mapping[str, str] | None = None,
+            check: bool = True) -> subprocess.CompletedProcess[str]:
+    """One subprocess call into the smolvm CLI. `check=True`
+    raises SmolvmError on non-zero; `check=False` returns the
+    CompletedProcess for the caller to inspect."""
+    argv = [_SMOLVM, *args]
+    result = subprocess.run(
+        argv,
+        capture_output=True,
+        text=True,
+        env=dict(env) if env is not None else None,
+        check=False,
+    )
+    if check and result.returncode != 0:
+        raise SmolvmError(argv, result)
+    return result
+
+
+# --- Pack ----------------------------------------------------------------
+
+
+def pack_create(image: str, output: Path) -> None:
+    """`smolvm pack create --image <image> -o <output>`. Converts
+    an OCI image into a self-contained `.smolmachine` artifact
+    smolvm can boot via `machine create --from`. Idempotent on the
+    smolvm side — re-running with the same image+output rebuilds
+    from layer cache."""
+    _smolvm("pack", "create", "--image", image, "-o", str(output))
+
+
+def pack_create_from_vm(name: str, output: Path) -> None:
+    """`smolvm pack create --from-vm <name> -o <output>`.
+
+    Snapshots an existing persistent VM into a pack artifact. As
+    with `pack_create`, smolvm writes a launcher at `output` and the
+    bootable sidecar at `output.smolmachine`.
+    """
+    _smolvm("pack", "create", "--from-vm", name, "-o", str(output))
+
+
+# --- Machine lifecycle ---------------------------------------------------
+
+
+def machine_create(
+    name: str,
+    *,
+    image: str | None = None,
+    from_path: Path | None = None,
+    allow_cidrs: Sequence[str] = (),
+    env: Mapping[str, str] | None = None,
+) -> None:
+    """`smolvm machine create --name NAME [--image IMG | --from PATH]
+    [--allow-cidr CIDR ...] [-e K=V ...]`. NAME is passed as
+    `--name` (smolvm 1.4.7+; earlier versions took it positionally).
+
+    `image` (registry ref like `alpine:latest`) and `from_path`
+    (a `.smolmachine` artifact) are mutually exclusive — one or
+    the other tells smolvm what to boot. The wrapper doesn't
+    enforce exclusivity; smolvm errors clearly enough.
+
+    `allow_cidrs` and `env` are passed as CLI flags instead of a
+    Smolfile because `--from` and `--smolfile` are themselves
+    mutually exclusive in smolvm 0.8.0 — and we want `--from`'s
+    no-pull-at-start property. The flag form gives the same
+    result without the Smolfile complication.
+
+    `--net` is sent explicitly when `allow_cidrs` is non-empty.
+    `--allow-cidr` implies `--net` per the CLI help, but sending
+    `--net` explicitly is harmless and ensures the guest has
+    network access even if that implication changes across versions."""
+    args: list[str] = ["machine", "create", "--name", name]
+    if image is not None:
+        args += ["--image", image]
+    if from_path is not None:
+        args += ["--from", str(from_path)]
+    if allow_cidrs:
+        args.append("--net")
+    for cidr in allow_cidrs:
+        args += ["--allow-cidr", cidr]
+    if env:
+        for k, v in env.items():
+            args += ["-e", f"{k}={v}"]
+    _smolvm(*args)
+
+
+def machine_is_running(name: str) -> bool:
+    """Return True if the named VM is in the 'running' state."""
+    result = _smolvm("machine", "ls", "--json", check=False)
+    if result.returncode != 0:
+        return False
+    try:
+        machines = json.loads(result.stdout or "[]")
+    except ValueError:
+        return False
+    return any(
+        isinstance(m, dict) and m.get("name") == name and m.get("state") == "running"
+        for m in machines
+    )
+
+
+def machine_start(name: str) -> None:
+    """`smolvm machine start --name NAME`."""
+    _smolvm("machine", "start", "--name", name)
+
+
+def machine_stop(name: str) -> None:
+    """`smolvm machine stop --name NAME`. Idempotent against
+    already-stopped machines: smolvm prints a notice and exits 0
+    in that case, so no special handling here."""
+    _smolvm("machine", "stop", "--name", name)
+
+
+def machine_delete(name: str) -> None:
+    """`smolvm machine delete --name NAME -f`. `-f` skips the
+    interactive confirmation — required for non-interactive teardown."""
+    _smolvm("machine", "delete", "--name", name, "-f")
+
+
+def machine_exec(
+    name: str,
+    argv: Sequence[str],
+    *,
+    env: Mapping[str, str] | None = None,
+    workdir: str | None = None,
+    timeout: str | None = None,
+) -> SmolvmRunResult:
+    """`smolvm machine exec --name NAME [-w DIR] [--timeout DUR]
+    [-e K=V ...] -- ARGV...`. Returns the captured result rather
+    than raising — callers (including `Bottle.exec`) care about
+    the in-VM command's exit code, not just whether smolvm ran.
+
+    `env` here is in-VM env vars (`-e K=V`), not the host
+    subprocess env — smolvm's own argv carries them through the
+    VMM."""
+    flags: list[str] = ["machine", "exec", "--name", name]
+    if workdir is not None:
+        flags += ["-w", workdir]
+    if timeout is not None:
+        flags += ["--timeout", timeout]
+    if env:
+        for k, v in env.items():
+            flags += ["-e", f"{k}={v}"]
+    # `--` separator before the command. smolvm's CLI requires it
+    # so its own flag parser doesn't grab argv items that look
+    # like flags.
+    flags.append("--")
+    flags += list(argv)
+    result = _smolvm(*flags, check=False)
+    return SmolvmRunResult(
+        returncode=result.returncode,
+        stdout=result.stdout or "",
+        stderr=result.stderr or "",
+    )
+
+
+def wait_exec_ready(name: str, *, timeout: float = 5.0) -> None:
+    """Poll `machine exec true` until exit 0 or `timeout` elapses.
+
+    Replaces `time.sleep(1.5)` after `machine_start`: libkrun's exec
+    channel needs a brief warm-up before back-to-back exec calls are
+    safe. Polling exits as soon as the channel is ready and fails
+    loudly if the VM never responds."""
+    deadline = time.monotonic() + timeout
+    delay = 0.1
+    while time.monotonic() < deadline:
+        r = machine_exec(name, ["true"])
+        if r.returncode == 0:
+            return
+        remaining = deadline - time.monotonic()
+        if remaining <= 0:
+            break
+        time.sleep(min(delay, remaining))
+        delay = min(delay * 2, 0.5)
+    argv = ["smolvm", "machine", "exec", "--name", name, "--", "true"]
+    raise SmolvmError(
+        argv,
+        subprocess.CompletedProcess(
+            args=argv, returncode=-1, stdout="",
+            stderr=f"exec channel not ready after {timeout:.0f}s — VM may have failed to boot.",
+        ),
+    )
+
+
+def machine_cp(src: str, dst: str) -> None:
+    """`smolvm machine cp SRC DST`. Path syntax: `machine:path` to
+    reference a path inside the VM, bare path for the host. Both
+    SRC and DST are positional; either side can be machine: or
+    bare. Empty path is a no-op (returns immediately without
+    invoking smolvm)."""
+    if not src or not dst:
+        return
+    _smolvm("machine", "cp", src, dst)
+
+
+# --- Discovery -----------------------------------------------------------
+
+
+def is_available() -> bool:
+    """True iff `smolvm` is on PATH. Used by the integration test
+    suite's skip-guards."""
+    return shutil.which(_SMOLVM) is not None

bot_bottle/backend/smolmachines/util.py

@@ -0,0 +1,82 @@
+"""Slug / preflight / subnet helpers for the smolmachines backend
+(PRD 0023). Kept in its own module so the renderers can be
+unit-tested without importing the docker subprocess paths."""
+
+from __future__ import annotations
+
+import hashlib
+import os
+import platform
+import shutil
+
+from ...log import die
+
+# libkrun's Linux backend drives the guest through KVM, so the host
+# must expose `/dev/kvm` and the invoking user must be able to open
+# it. macOS uses Hypervisor.framework and needs no device node.
+_KVM_DEVICE = "/dev/kvm"
+
+
+def smolmachines_preflight() -> None:
+    """Ensure the host can run the smolmachines backend before the
+    launch flow starts. Called from `_resolve_plan`; surfaces a
+    clear, actionable error instead of a cryptic `smolvm` failure
+    deep in launch.
+
+    Checks `smolvm` is on PATH (both platforms) and, on Linux,
+    that `/dev/kvm` exists and is accessible. `gvproxy` is no
+    longer required — see the PRD's design pivot section."""
+    if shutil.which("smolvm") is None:
+        die(
+            "BOT_BOTTLE_BACKEND=smolmachines requires `smolvm` on "
+            "PATH. Install with: "
+            "curl -sSL https://smolmachines.com/install.sh | sh. "
+            "To use the legacy Docker backend instead, set "
+            "BOT_BOTTLE_BACKEND=docker or pass --backend=docker."
+        )
+    if platform.system() == "Linux":
+        _preflight_kvm()
+
+
+def _preflight_kvm() -> None:
+    """Linux-only: libkrun needs `/dev/kvm`. Distinguish 'KVM not
+    enabled' from 'no permission' so the operator knows which to
+    fix."""
+    if not os.path.exists(_KVM_DEVICE):
+        die(
+            f"BOT_BOTTLE_BACKEND=smolmachines needs {_KVM_DEVICE} on "
+            "Linux but it is missing. Enable KVM: load the kvm-intel "
+            "or kvm-amd kernel module (and confirm virtualization is "
+            "enabled in BIOS/firmware). To use the legacy Docker "
+            "backend instead, set BOT_BOTTLE_BACKEND=docker."
+        )
+    if not os.access(_KVM_DEVICE, os.R_OK | os.W_OK):
+        die(
+            f"{_KVM_DEVICE} exists but is not readable/writable by the "
+            "current user. Add your user to the `kvm` group "
+            "(`sudo usermod -aG kvm \"$USER\"`) and re-login, or run "
+            "with access to the device."
+        )
+
+
+def smolmachines_bundle_subnet(slug: str) -> tuple[str, str, str]:
+    """Derive a per-bottle docker subnet + gateway IP + bundle IP
+    from the slug.
+
+    Returns `(subnet_cidr, gateway_ip, bundle_ip)`. The third
+    octet comes from SHA-256 of the slug mod 254 (skipping 17 to
+    avoid the docker-default bridge), so parallel bottles get
+    distinct /24s and `resume` reuses the same /24. The bundle
+    container always lands at `.2`; gateway is `.1`; the smolvm
+    Smolfile's `allow_cidrs` is `<bundle_ip>/32`."""
+    digest = hashlib.sha256(slug.encode("utf-8")).digest()
+    octet = (digest[0] % 254) + 1
+    # Skip the docker-default bridge to dodge the most common
+    # collision (operators with `docker0` at 172.17.x.x or a
+    # 192.168.17.x VPN client).
+    if octet == 17:
+        octet = 18
+    subnet = f"192.168.{octet}.0/24"
+    gateway = f"192.168.{octet}.1"
+    bundle_ip = f"192.168.{octet}.2"
+    return subnet, gateway, bundle_ip

bot_bottle/bottle/__init__.py

@@ -0,0 +1,11 @@
+"""Bottle lifecycle primitives."""
+
+from .runner import BottleError, destroy, freeze, resume_headless, start_headless
+
+__all__ = [
+    "BottleError",
+    "destroy",
+    "freeze",
+    "resume_headless",
+    "start_headless",
+]

bot_bottle/bottle/runner.py

@@ -0,0 +1,258 @@
+"""Public Python API for programmatic bottle orchestration.
+
+Stable surface for bot-bottle-orchestrator (and other Python callers) to
+drive bottles without invoking the CLI as a subprocess.  Every function
+converts ``Die`` and non-zero agent exit codes to ``BottleError`` so
+callers use exception handling rather than inspecting return values.
+
+The Protocol the orchestrator's ``BottleRunner`` targets looks like::
+
+    class BottleRunner(Protocol):
+        def start(self, agent: str, *, prompt: str, ...) -> str: ...
+        def resume(self, slug: str, *, prompt: str) -> None: ...
+        def freeze(self, slug: str) -> None: ...
+        def destroy(self, slug: str) -> None: ...
+
+A ``SubprocessBottleRunner`` calls ``./cli.py`` for each operation.  A
+``ProgrammaticBottleRunner`` calls these functions directly; the Protocol
+call sites in ``lifecycle.py`` are unchanged.
+"""
+
+from __future__ import annotations
+
+from typing import Sequence, cast
+
+from ..backend import BottleSpec
+from ..backend.freeze import CommitCancelled, get_freezer
+from .state import cleanup_state, clear_preserve_marker, read_metadata
+from ..cli._common import USER_CWD
+from ..cli.start import _launch_bottle, _peek_agent_bottle, _uniquify_label_headless
+from ..log import Die
+from ..manifest import ManifestError, ManifestIndex
+
+
+class BottleError(Exception):
+    """Raised when a bottle operation fails.
+
+    ``exit_code`` carries the agent process's exit code when the failure is
+    a non-zero agent exit; 1 for all other failure modes (missing state,
+    backend errors, etc.)."""
+
+    def __init__(self, message: str, *, exit_code: int = 1) -> None:
+        super().__init__(message)
+        self.exit_code = exit_code
+
+
+def start_headless(
+    agent_name: str,
+    *,
+    prompt: str,
+    bottles: Sequence[str] | None = None,
+    label: str | None = None,
+    color: str | None = None,
+    backend_name: str | None = None,
+    copy_cwd: bool = False,
+    forge_env: dict[str, str] | None = None,
+    user_cwd: str | None = None,
+) -> str:
+    """Launch a new bottle headlessly.  Returns the bottle slug.
+
+    ``forge_env`` is passed through to the forge sidecar (not the agent)
+    when the bottle is forge-targeted; it carries the credentials and
+    context the sidecar needs to call the forge API.
+
+    Raises ``BottleError`` on configuration errors or if the agent exits
+    non-zero.  The returned slug can be passed to ``freeze()``,
+    ``resume_headless()``, or ``destroy()`` for subsequent lifecycle
+    operations."""
+    cwd = user_cwd or USER_CWD
+    try:
+        manifest = ManifestIndex.resolve(cwd)
+        manifest.require_agent(agent_name)
+    except (Die, ManifestError) as exc:
+        raise BottleError(str(exc)) from exc
+
+    if bottles:
+        bottle_names: tuple[str, ...] = tuple(bottles)
+    else:
+        default_bottle = _peek_agent_bottle(manifest, agent_name)
+        if not default_bottle:
+            raise BottleError(
+                f"agent '{agent_name}' has no default bottle; "
+                f"pass bottles=[...]"
+            )
+        bottle_names = (default_bottle,)
+
+    spec = BottleSpec(
+        manifest=manifest,
+        agent_name=agent_name,
+        copy_cwd=copy_cwd,
+        user_cwd=cwd,
+        label=_uniquify_label_headless(label or agent_name),
+        color=color or "",
+        bottle_names=bottle_names,
+        forge_env=dict(forge_env) if forge_env else {},
+    )
+    try:
+        slug, exit_code = _launch_bottle(
+            spec,
+            dry_run=False,
+            backend_name=backend_name,
+            assume_yes=True,
+            headless_prompt_text=prompt,
+        )
+    except Die as exc:
+        raise BottleError(exc.message, exit_code=cast(int, exc.code)) from exc
+    if exit_code != 0:
+        raise BottleError(
+            f"agent exited {exit_code} (slug={slug!r})", exit_code=exit_code
+        )
+    return slug
+
+
+def resume_headless(
+    slug: str,
+    *,
+    prompt: str,
+    backend_name: str | None = None,
+    forge_env: dict[str, str] | None = None,
+) -> None:
+    """Resume a frozen bottle headlessly with ``prompt``.
+
+    ``forge_env`` re-supplies forge context for the new session (the
+    sidecar is relaunched alongside the agent on resume).
+
+    Raises ``BottleError`` on missing state, backend errors, or non-zero
+    agent exit."""
+    metadata = read_metadata(slug)
+    if metadata is None:
+        raise BottleError(
+            f"no state recorded for slug {slug!r}; "
+            f"check ~/.bot-bottle/state/ or call start_headless() to create a new bottle"
+        )
+
+    try:
+        manifest = ManifestIndex.resolve(metadata.cwd or USER_CWD)
+        manifest.require_agent(metadata.agent_name)
+    except (Die, ManifestError) as exc:
+        raise BottleError(str(exc)) from exc
+
+    spec = BottleSpec(
+        manifest=manifest,
+        agent_name=metadata.agent_name,
+        copy_cwd=metadata.copy_cwd,
+        user_cwd=metadata.cwd or USER_CWD,
+        identity=metadata.identity,
+        bottle_names=tuple(metadata.bottle_names),
+        forge_env=dict(forge_env) if forge_env else {},
+    )
+    try:
+        _, exit_code = _launch_bottle(
+            spec,
+            dry_run=False,
+            backend_name=backend_name or metadata.backend or None,
+            assume_yes=True,
+            headless_prompt_text=prompt,
+        )
+    except Die as exc:
+        raise BottleError(exc.message, exit_code=cast(int, exc.code)) from exc
+    if exit_code != 0:
+        raise BottleError(
+            f"agent exited {exit_code} resuming {slug!r}", exit_code=exit_code
+        )
+
+
+def freeze(slug: str, *, backend_name: str | None = None) -> None:
+    """Freeze the named bottle to a resumable artifact.
+
+    Reads the bottle's backend from its metadata when ``backend_name`` is
+    not supplied.  Raises ``BottleError`` if the freeze fails."""
+    metadata = read_metadata(slug)
+    resolved_backend = backend_name or (metadata.backend if metadata else "") or "docker"
+    try:
+        get_freezer(resolved_backend).commit_slug(slug)
+    except CommitCancelled as exc:
+        raise BottleError(f"freeze cancelled for {slug!r}") from exc
+    except Die as exc:
+        raise BottleError(exc.message, exit_code=cast(int, exc.code)) from exc
+
+
+def destroy(slug: str, *, backend_name: str | None = None) -> None:
+    """Destroy the named bottle, removing all resources and state.
+
+    Brings down any running resources for ``slug``, then removes the
+    per-bottle state directory.  Idempotent: a slug with no running
+    resources or no state directory is not an error."""
+    metadata = read_metadata(slug)
+    resolved_backend = backend_name or (metadata.backend if metadata else "") or "docker"
+    try:
+        if resolved_backend == "docker":
+            _destroy_docker(slug)
+        elif resolved_backend == "smolmachines":
+            _destroy_smolmachines(slug)
+        # macos-container: the container is torn down inside the launch
+        # context manager; no persistent VM survives, so nothing extra is
+        # needed at destroy time beyond the state-dir removal below.
+    except Die as exc:
+        raise BottleError(exc.message, exit_code=cast(int, exc.code)) from exc
+    clear_preserve_marker(slug)
+    cleanup_state(slug)
+
+
+# --- backend-specific helpers -----------------------------------------------
+
+
+def _destroy_docker(slug: str) -> None:
+    """Best-effort ``docker compose down`` for a Docker bottle.
+
+    No-op when the compose file is absent — the project was already
+    brought down (normal for a frozen bottle) or was never created."""
+    from ..backend.docker.compose import (
+        compose_down,
+        compose_file_path,
+        compose_project_name,
+    )
+    from .state import bottle_state_dir
+
+    state_dir = bottle_state_dir(slug)
+    compose_file = compose_file_path(state_dir)
+    if compose_file.exists():
+        compose_down(compose_project_name(slug), compose_file)
+
+
+def _destroy_smolmachines(slug: str) -> None:
+    """Best-effort stop + delete for a smolmachines bottle.
+
+    Both steps are best-effort: a machine that is already gone does not
+    cause an error; partial failures are logged as warnings."""
+    import subprocess
+
+    from ..log import warn
+
+    machine = f"bot-bottle-{slug}"
+    subprocess.run(
+        ["smolvm", "machine", "stop", "--name", machine],
+        stdout=subprocess.DEVNULL,
+        stderr=subprocess.DEVNULL,
+        check=False,
+    )
+    r = subprocess.run(
+        ["smolvm", "machine", "delete", "-f", machine],
+        capture_output=True,
+        text=True,
+        check=False,
+    )
+    if r.returncode != 0:
+        warn(
+            f"smolvm machine delete -f {machine!r} failed "
+            f"(may already be gone): {(r.stderr or '').strip()}"
+        )
+
+
+__all__ = [
+    "BottleError",
+    "destroy",
+    "freeze",
+    "resume_headless",
+    "start_headless",
+]

bot_bottle/bottle/state.py

@@ -0,0 +1,364 @@
+"""Per-bottle persistent state.
+
+Holds optional per-bottle Dockerfile overrides, the transcript snapshot
+the state-preservation helper saves before teardown, and the launch metadata that lets
+`cli.py resume <identity>` reconstruct a bottle's spec. State
+lives at:
+
+    ~/.bot-bottle/state/<identity>/
+        metadata.json     — agent_name + cwd + started_at (for resume)
+        Dockerfile        — per-bottle override (absent → use repo's)
+        transcript/       — last snapshotted agent state (best-effort)
+
+When the per-bottle Dockerfile is present, the launch step builds
+the agent image with a per-bottle tag (bot-bottle-rebuilt-<id>)
+from this file rather than the repo's. The build context is still
+the repo root so the Dockerfile can COPY bot_bottle source files
+the same way the original does.
+
+Identity model:
+- Every `cli.py start <agent>` mints a fresh identity via
+  `bottle_identity(agent_name)`: slug-prefix for readability plus a
+  5-char random suffix for parallel-safe uniqueness. The metadata
+  written at launch time pins (agent_name, cwd) to that identity.
+- `cli.py resume <identity>` reads the metadata and re-launches a
+  bottle pinned to the same identity, picking up any per-bottle
+  Dockerfile and transcript snapshot.
+"""
+
+from __future__ import annotations
+
+import dataclasses
+import json
+import secrets
+import string
+from dataclasses import dataclass
+from pathlib import Path
+from typing import cast
+
+from .. import supervise as _supervise
+
+
+# Directory layout: ~/.bot-bottle/state/<identity>/...
+_STATE_SUBDIR = "state"
+_PER_BOTTLE_DOCKERFILE_NAME = "Dockerfile"
+_COMMITTED_IMAGE_NAME = "committed-image"
+_TRANSCRIPT_SUBDIR = "transcript"
+# Per-sidecar scratch subdirs. PRD 0018 chunk 2: bind-mount sources
+# live here so chunk 3's `docker compose up` can find them at stable
+# paths. Each sidecar's `prepare()` writes config + CAs into its own
+# subdir; the launch step is unchanged today (still `docker cp`).
+_EGRESS_SUBDIR = "egress"
+_GIT_GATE_SUBDIR = "git-gate"
+_SUPERVISE_SUBDIR = "supervise"
+_AGENT_SUBDIR = "agent"
+_METADATA_NAME = "metadata.json"
+# Live-config dir bind-mounted into the supervise sidecar (read-only).
+# Host's apply paths keep these files fresh so supervise's
+# `list-egress-routes` MCP tool returns the current state —
+# not a snapshot from launch time.
+_LIVE_CONFIG_SUBDIR = "live-config"
+LIVE_CONFIG_ROUTES_NAME = "routes.yaml"
+LIVE_CONFIG_ALLOWLIST_NAME = "allowlist"
+# Empty marker file. Session preservation writes it before teardown so
+# cli.py's session-end cleanup knows to preserve the state dir for
+# `cli.py resume <identity>`. Absent = clean up.
+_PRESERVE_MARKER = ".preserve"
+
+# 5 chars of base36 alphabet ≈ 60M combinations. Plenty for human
+# operators starting bottles by hand; collision-free in practice.
+_RANDOM_SUFFIX_LEN = 5
+_SUFFIX_ALPHABET = string.ascii_lowercase + string.digits
+
+
+def bottle_identity(agent_name: str) -> str:
+    """Mint a fresh per-launch bottle identity. The slug-prefix is
+    `slugify(agent_name)` for readability; the suffix is 5 random
+    base36 chars so two simultaneous `start <agent>` invocations
+    don't collide on container/network names.
+
+    Every call produces a different identity (non-deterministic).
+    To continue an existing bottle's state, use the recorded
+    identity from BottleMetadata via `cli.py resume <identity>`,
+    not this function."""
+    from ..backend.docker import util as docker_mod
+    slug = docker_mod.slugify(agent_name)
+    suffix = "".join(secrets.choice(_SUFFIX_ALPHABET) for _ in range(_RANDOM_SUFFIX_LEN))
+    return f"{slug}-{suffix}"
+
+
+@dataclass(frozen=True)
+class BottleMetadata:
+    """Persistent record of how a bottle was launched, written at
+    start time and read by `cli.py resume`. Lives at
+    ~/.bot-bottle/state/<identity>/metadata.json."""
+
+    identity: str
+    agent_name: str
+    cwd: str           # empty string when --cwd was not passed
+    copy_cwd: bool
+    started_at: str    # ISO 8601 UTC
+    # PRD 0018 chunk 3: derivable from identity via
+    # `compose_project_name(identity)`, but persisted explicitly so
+    # dashboard / cleanup / resume tooling can read it without
+    # importing the compose module. Empty string for state dirs
+    # written before chunk 3 (resume / inspect should fall back to
+    # deriving from identity in that case).
+    compose_project: str = ""
+    # PRD 0040: backend name ("docker" or "smolmachines"). Empty string
+    # for state dirs written before PRD 0040; callers default to "docker"
+    # for backward compatibility.
+    backend: str = ""
+    label: str = ""
+    color: str = ""
+    # Ordered bottle names selected at launch (issue #269). Empty tuple
+    # for state dirs written before this change; resume falls back to
+    # the agent's `bottle:` field in that case.
+    bottle_names: tuple[str, ...] = ()
+
+
+def metadata_path(identity: str) -> Path:
+    return bottle_state_dir(identity) / _METADATA_NAME
+
+
+def write_metadata(metadata: BottleMetadata) -> Path:
+    """Persist `metadata` to ~/.bot-bottle/state/<identity>/metadata.json.
+    Mode 0o644 — no secrets, just (agent_name, cwd, timestamp)."""
+    path = metadata_path(metadata.identity)
+    path.parent.mkdir(parents=True, exist_ok=True)
+    path.write_text(json.dumps(dataclasses.asdict(metadata), indent=2) + "\n")
+    path.chmod(0o644)
+    return path
+
+
+def read_metadata(identity: str) -> BottleMetadata | None:
+    """Return the metadata for `identity`, or None if no state has
+    been recorded for it. Used by `cli.py resume` to reconstruct
+    the launch spec."""
+    path = metadata_path(identity)
+    if not path.is_file():
+        return None
+    raw = json.loads(path.read_text())
+    if not isinstance(raw, dict):
+        return None
+    raw_typed = cast(dict[str, object], raw)
+    raw_bottle_names = raw_typed.get("bottle_names", [])
+    bottle_names: tuple[str, ...] = ()
+    if isinstance(raw_bottle_names, list):
+        bottle_names = tuple(str(n) for n in raw_bottle_names if isinstance(n, str))
+    return BottleMetadata(
+        identity=str(raw_typed.get("identity", identity)),
+        agent_name=str(raw_typed.get("agent_name", "")),
+        cwd=str(raw_typed.get("cwd", "")),
+        copy_cwd=bool(raw_typed.get("copy_cwd", False)),
+        started_at=str(raw_typed.get("started_at", "")),
+        compose_project=str(raw_typed.get("compose_project", "")),
+        backend=str(raw_typed.get("backend", "")),
+        label=str(raw_typed.get("label", "")),
+        color=str(raw_typed.get("color", "")),
+        bottle_names=bottle_names,
+    )
+
+
+def bottle_state_dir(identity: str) -> Path:
+    """Per-bottle state directory on the host. Created lazily by the
+    write helpers; readers tolerate its absence."""
+    return _supervise.bot_bottle_root() / _STATE_SUBDIR / identity
+
+
+def per_bottle_dockerfile_path(identity: str) -> Path:
+    return bottle_state_dir(identity) / _PER_BOTTLE_DOCKERFILE_NAME
+
+
+def per_bottle_dockerfile(identity: str) -> str | None:
+    """Return the per-bottle Dockerfile content if present, else
+    None. None means: use the provider or manifest Dockerfile."""
+    p = per_bottle_dockerfile_path(identity)
+    if p.is_file():
+        return p.read_text()
+    return None
+
+
+def write_per_bottle_dockerfile(identity: str, content: str) -> Path:
+    p = per_bottle_dockerfile_path(identity)
+    p.parent.mkdir(parents=True, exist_ok=True)
+    p.write_text(content)
+    p.chmod(0o644)
+    return p
+
+
+def committed_image_path(identity: str) -> Path:
+    return bottle_state_dir(identity) / _COMMITTED_IMAGE_NAME
+
+
+def write_committed_image(identity: str, image_tag: str) -> Path:
+    """Persist the committed image tag for `identity`. The next
+    `cli.py resume <identity>` will boot from this image instead of
+    rebuilding from the Dockerfile."""
+    path = committed_image_path(identity)
+    path.parent.mkdir(parents=True, exist_ok=True)
+    path.write_text(image_tag.strip() + "\n")
+    path.chmod(0o644)
+    return path
+
+
+def read_committed_image(identity: str) -> str | None:
+    """Return the committed image tag for `identity`, or None if no
+    commit has been recorded. Used by the Docker launch step to skip
+    the Dockerfile build when a committed snapshot exists."""
+    path = committed_image_path(identity)
+    if not path.is_file():
+        return None
+    tag = path.read_text().strip()
+    return tag or None
+
+
+def per_bottle_image_tag(identity: str) -> str:
+    """Image tag for a rebuilt bottle. Distinct from the base
+    bot-bottle-claude:latest so per-bottle rebuilds don't collide in
+    the docker image cache."""
+    return f"bot-bottle-rebuilt-{identity}:latest"
+
+
+def live_config_dir(identity: str) -> Path:
+    """Per-bottle live-config dir. Bind-mounted read-only into the
+    supervise sidecar; the host's apply paths refresh the files on
+    every operator approval so the agent's `list-*` MCP tools always
+    return current state."""
+    return bottle_state_dir(identity) / _LIVE_CONFIG_SUBDIR
+
+
+def live_routes_path(identity: str) -> Path:
+    return live_config_dir(identity) / LIVE_CONFIG_ROUTES_NAME
+
+
+def live_allowlist_path(identity: str) -> Path:
+    return live_config_dir(identity) / LIVE_CONFIG_ALLOWLIST_NAME
+
+
+def write_live_config(
+    identity: str, *, routes: str = "", allowlist: str = "",
+) -> Path:
+    """Initialise (or refresh) the live-config dir. Empty-string args
+    leave the existing file alone (caller passes only what it knows).
+    Returns the live-config dir path."""
+    d = live_config_dir(identity)
+    d.mkdir(parents=True, exist_ok=True)
+    if routes:
+        p = live_routes_path(identity)
+        p.write_text(routes)
+        p.chmod(0o644)
+    if allowlist:
+        p = live_allowlist_path(identity)
+        p.write_text(allowlist)
+        p.chmod(0o644)
+    return d
+
+
+def transcript_snapshot_dir(identity: str) -> Path:
+    """Where agent session snapshots are kept for resume flows."""
+    return bottle_state_dir(identity) / _TRANSCRIPT_SUBDIR
+
+
+# --- Per-sidecar scratch subdirs (PRD 0018 chunk 2) ------------------------
+#
+# Each sidecar gets its own subdir under the bottle's state dir for
+# bind-mount sources (config, CAs, hooks, etc.). Prepare-time writes
+# land here; the state dir's normal cleanup (`cleanup_state`) reaps
+# them along with everything else when the bottle session ends and
+# nothing requested preservation.
+
+
+def egress_state_dir(identity: str) -> Path:
+    """State subdir for the egress sidecar: routes.yaml + the
+    per-bottle mitmproxy CA. Bind-mount source from chunk 3 onward."""
+    return bottle_state_dir(identity) / _EGRESS_SUBDIR
+
+
+def git_gate_state_dir(identity: str) -> Path:
+    """State subdir for the git-gate sidecar: entrypoint + hooks +
+    per-upstream known_hosts. Bind-mount source from chunk 3
+    onward."""
+    return bottle_state_dir(identity) / _GIT_GATE_SUBDIR
+
+
+def supervise_state_dir(identity: str) -> Path:
+    """State subdir reserved for supervise sidecar bind-mount sources.
+    The queue dir is intentionally NOT under here — it lives at
+    ~/.bot-bottle/queue/<slug>/ alongside the audit logs, so it
+    survives state-dir cleanup."""
+    return bottle_state_dir(identity) / _SUPERVISE_SUBDIR
+
+
+def agent_state_dir(identity: str) -> Path:
+    """State subdir for the agent's prepare-time scratch files: the
+    env file (docker --env-file source) and the prompt file."""
+    return bottle_state_dir(identity) / _AGENT_SUBDIR
+
+
+# --- Preserve-on-close marker ----------------------------------------------
+
+
+def preserve_marker_path(identity: str) -> Path:
+    return bottle_state_dir(identity) / _PRESERVE_MARKER
+
+
+def mark_preserved(identity: str) -> Path:
+    """Mark this bottle's state for preservation across session
+    teardown so cli.py's session-end cleanup leaves the state dir
+    intact for a subsequent `cli.py resume`."""
+    path = preserve_marker_path(identity)
+    path.parent.mkdir(parents=True, exist_ok=True)
+    path.touch()
+    return path
+
+
+def is_preserved(identity: str) -> bool:
+    return preserve_marker_path(identity).exists()
+
+
+def clear_preserve_marker(identity: str) -> None:
+    """Idempotent removal. Called at fresh launch (start or resume)
+    so a marker left from a prior preserved session doesn't keep
+    state alive past the next normal session-end."""
+    try:
+        preserve_marker_path(identity).unlink()
+    except FileNotFoundError:
+        pass
+
+
+def cleanup_state(identity: str) -> None:
+    """Remove the per-bottle state dir entirely. Called by cli.py
+    when a bottle session ends and is_preserved(identity) is False.
+    Idempotent — missing dir is success."""
+    import shutil
+    state_dir = bottle_state_dir(identity)
+    if state_dir.is_dir():
+        shutil.rmtree(state_dir, ignore_errors=True)
+
+
+__all__ = [
+    "BottleMetadata",
+    "agent_state_dir",
+    "bottle_identity",
+    "bottle_state_dir",
+    "cleanup_state",
+    "clear_preserve_marker",
+    "committed_image_path",
+    "egress_state_dir",
+    "git_gate_state_dir",
+    "is_preserved",
+    "mark_preserved",
+    "metadata_path",
+    "per_bottle_dockerfile",
+    "per_bottle_dockerfile_path",
+    "per_bottle_image_tag",
+    "preserve_marker_path",
+    "read_committed_image",
+    "read_metadata",
+    "supervise_state_dir",
+    "transcript_snapshot_dir",
+    "write_committed_image",
+    "write_metadata",
+    "write_per_bottle_dockerfile",
+]

bot_bottle/bottle_state.py

@@ -1,363 +1,6 @@
-"""Per-bottle persistent state.
+"""Compatibility wrapper for per-bottle persistent state.
 
-Holds optional per-bottle Dockerfile overrides, the transcript snapshot
-the state-preservation helper saves before teardown, and the launch metadata that lets
-`cli.py resume <identity>` reconstruct a bottle's spec. State
-lives at:
-
-    ~/.bot-bottle/state/<identity>/
-        metadata.json     — agent_name + cwd + started_at (for resume)
-        Dockerfile        — per-bottle override (absent → use repo's)
-        transcript/       — last snapshotted agent state (best-effort)
-
-When the per-bottle Dockerfile is present, the launch step builds
-the agent image with a per-bottle tag (bot-bottle-rebuilt-<id>)
-from this file rather than the repo's. The build context is still
-the repo root so the Dockerfile can COPY bot_bottle source files
-the same way the original does.
-
-Identity model:
-- Every `cli.py start <agent>` mints a fresh identity via
-  `bottle_identity(agent_name)`: slug-prefix for readability plus a
-  5-char random suffix for parallel-safe uniqueness. The metadata
-  written at launch time pins (agent_name, cwd) to that identity.
-- `cli.py resume <identity>` reads the metadata and re-launches a
-  bottle pinned to the same identity, picking up any per-bottle
-  Dockerfile and transcript snapshot.
+The implementation lives in :mod:`bot_bottle.bottle.state`.
 """
 
-from __future__ import annotations
-
-import dataclasses
-import json
-import secrets
-import string
-from dataclasses import dataclass
-from pathlib import Path
-from typing import cast
-
-from .paths import bot_bottle_root
-
-
-# Directory layout: ~/.bot-bottle/state/<identity>/...
-_STATE_SUBDIR = "state"
-_PER_BOTTLE_DOCKERFILE_NAME = "Dockerfile"
-_COMMITTED_IMAGE_NAME = "committed-image"
-_TRANSCRIPT_SUBDIR = "transcript"
-# Per-sidecar scratch subdirs. PRD 0018 chunk 2: bind-mount sources
-# live here so chunk 3's `docker compose up` can find them at stable
-# paths. Each sidecar's `prepare()` writes config + CAs into its own
-# subdir; the launch step is unchanged today (still `docker cp`).
-_EGRESS_SUBDIR = "egress"
-_GIT_GATE_SUBDIR = "git-gate"
-_SUPERVISE_SUBDIR = "supervise"
-_AGENT_SUBDIR = "agent"
-_METADATA_NAME = "metadata.json"
-# Live-config dir bind-mounted into the supervise sidecar (read-only).
-# Host's apply paths keep these files fresh so supervise's
-# `list-egress-routes` MCP tool returns the current state —
-# not a snapshot from launch time.
-_LIVE_CONFIG_SUBDIR = "live-config"
-LIVE_CONFIG_ROUTES_NAME = "routes.yaml"
-LIVE_CONFIG_ALLOWLIST_NAME = "allowlist"
-# Empty marker file. Session preservation writes it before teardown so
-# cli.py's session-end cleanup knows to preserve the state dir for
-# `cli.py resume <identity>`. Absent = clean up.
-_PRESERVE_MARKER = ".preserve"
-
-# 5 chars of base36 alphabet ≈ 60M combinations. Plenty for human
-# operators starting bottles by hand; collision-free in practice.
-_RANDOM_SUFFIX_LEN = 5
-_SUFFIX_ALPHABET = string.ascii_lowercase + string.digits
-
-
-def bottle_identity(agent_name: str) -> str:
-    """Mint a fresh per-launch bottle identity. The slug-prefix is
-    `slugify(agent_name)` for readability; the suffix is 5 random
-    base36 chars so two simultaneous `start <agent>` invocations
-    don't collide on container/network names.
-
-    Every call produces a different identity (non-deterministic).
-    To continue an existing bottle's state, use the recorded
-    identity from BottleMetadata via `cli.py resume <identity>`,
-    not this function."""
-    from .backend.docker import util as docker_mod
-    slug = docker_mod.slugify(agent_name)
-    suffix = "".join(secrets.choice(_SUFFIX_ALPHABET) for _ in range(_RANDOM_SUFFIX_LEN))
-    return f"{slug}-{suffix}"
-
-
-@dataclass(frozen=True)
-class BottleMetadata:
-    """Persistent record of how a bottle was launched, written at
-    start time and read by `cli.py resume`. Lives at
-    ~/.bot-bottle/state/<identity>/metadata.json."""
-
-    identity: str
-    agent_name: str
-    cwd: str           # empty string when --cwd was not passed
-    copy_cwd: bool
-    started_at: str    # ISO 8601 UTC
-    # PRD 0018 chunk 3: derivable from identity via
-    # `compose_project_name(identity)`, but persisted explicitly so
-    # dashboard / cleanup / resume tooling can read it without
-    # importing the compose module. Empty string for state dirs
-    # written before chunk 3 (resume / inspect should fall back to
-    # deriving from identity in that case).
-    compose_project: str = ""
-    # PRD 0040: backend name ("docker", "firecracker", "macos-container").
-    # Empty string for state dirs written before PRD 0040; callers default
-    # to "docker" for backward compatibility.
-    backend: str = ""
-    label: str = ""
-    color: str = ""
-    # Ordered bottle names selected at launch (issue #269). Empty tuple
-    # for state dirs written before this change; resume falls back to
-    # the agent's `bottle:` field in that case.
-    bottle_names: tuple[str, ...] = ()
-
-
-def metadata_path(identity: str) -> Path:
-    return bottle_state_dir(identity) / _METADATA_NAME
-
-
-def write_metadata(metadata: BottleMetadata) -> Path:
-    """Persist `metadata` to ~/.bot-bottle/state/<identity>/metadata.json.
-    Mode 0o644 — no secrets, just (agent_name, cwd, timestamp)."""
-    path = metadata_path(metadata.identity)
-    path.parent.mkdir(parents=True, exist_ok=True)
-    path.write_text(json.dumps(dataclasses.asdict(metadata), indent=2) + "\n")
-    path.chmod(0o644)
-    return path
-
-
-def read_metadata(identity: str) -> BottleMetadata | None:
-    """Return the metadata for `identity`, or None if no state has
-    been recorded for it. Used by `cli.py resume` to reconstruct
-    the launch spec."""
-    path = metadata_path(identity)
-    if not path.is_file():
-        return None
-    raw = json.loads(path.read_text())
-    if not isinstance(raw, dict):
-        return None
-    raw_typed = cast(dict[str, object], raw)
-    raw_bottle_names = raw_typed.get("bottle_names", [])
-    bottle_names: tuple[str, ...] = ()
-    if isinstance(raw_bottle_names, list):
-        bottle_names = tuple(str(n) for n in raw_bottle_names if isinstance(n, str))
-    return BottleMetadata(
-        identity=str(raw_typed.get("identity", identity)),
-        agent_name=str(raw_typed.get("agent_name", "")),
-        cwd=str(raw_typed.get("cwd", "")),
-        copy_cwd=bool(raw_typed.get("copy_cwd", False)),
-        started_at=str(raw_typed.get("started_at", "")),
-        compose_project=str(raw_typed.get("compose_project", "")),
-        backend=str(raw_typed.get("backend", "")),
-        label=str(raw_typed.get("label", "")),
-        color=str(raw_typed.get("color", "")),
-        bottle_names=bottle_names,
-    )
-
-
-def bottle_state_dir(identity: str) -> Path:
-    """Per-bottle state directory on the host. Created lazily by the
-    write helpers; readers tolerate its absence."""
-    return bot_bottle_root() / _STATE_SUBDIR / identity
-
-
-def per_bottle_dockerfile_path(identity: str) -> Path:
-    return bottle_state_dir(identity) / _PER_BOTTLE_DOCKERFILE_NAME
-
-
-def per_bottle_dockerfile(identity: str) -> str | None:
-    """Return the per-bottle Dockerfile content if present, else
-    None. None means: use the provider or manifest Dockerfile."""
-    p = per_bottle_dockerfile_path(identity)
-    if p.is_file():
-        return p.read_text()
-    return None
-
-
-def write_per_bottle_dockerfile(identity: str, content: str) -> Path:
-    p = per_bottle_dockerfile_path(identity)
-    p.parent.mkdir(parents=True, exist_ok=True)
-    p.write_text(content)
-    p.chmod(0o644)
-    return p
-
-
-def committed_image_path(identity: str) -> Path:
-    return bottle_state_dir(identity) / _COMMITTED_IMAGE_NAME
-
-
-def write_committed_image(identity: str, image_tag: str) -> Path:
-    """Persist the committed image tag for `identity`. The next
-    `cli.py resume <identity>` will boot from this image instead of
-    rebuilding from the Dockerfile."""
-    path = committed_image_path(identity)
-    path.parent.mkdir(parents=True, exist_ok=True)
-    path.write_text(image_tag.strip() + "\n")
-    path.chmod(0o644)
-    return path
-
-
-def read_committed_image(identity: str) -> str | None:
-    """Return the committed image tag for `identity`, or None if no
-    commit has been recorded. Used by the Docker launch step to skip
-    the Dockerfile build when a committed snapshot exists."""
-    path = committed_image_path(identity)
-    if not path.is_file():
-        return None
-    tag = path.read_text().strip()
-    return tag or None
-
-
-def per_bottle_image_tag(identity: str) -> str:
-    """Image tag for a rebuilt bottle. Distinct from the base
-    bot-bottle-claude:latest so per-bottle rebuilds don't collide in
-    the docker image cache."""
-    return f"bot-bottle-rebuilt-{identity}:latest"
-
-
-def live_config_dir(identity: str) -> Path:
-    """Per-bottle live-config dir. Bind-mounted read-only into the
-    supervise sidecar; the host's apply paths refresh the files on
-    every operator approval so the agent's `list-*` MCP tools always
-    return current state."""
-    return bottle_state_dir(identity) / _LIVE_CONFIG_SUBDIR
-
-
-def live_routes_path(identity: str) -> Path:
-    return live_config_dir(identity) / LIVE_CONFIG_ROUTES_NAME
-
-
-def live_allowlist_path(identity: str) -> Path:
-    return live_config_dir(identity) / LIVE_CONFIG_ALLOWLIST_NAME
-
-
-def write_live_config(
-    identity: str, *, routes: str = "", allowlist: str = "",
-) -> Path:
-    """Initialise (or refresh) the live-config dir. Empty-string args
-    leave the existing file alone (caller passes only what it knows).
-    Returns the live-config dir path."""
-    d = live_config_dir(identity)
-    d.mkdir(parents=True, exist_ok=True)
-    if routes:
-        p = live_routes_path(identity)
-        p.write_text(routes)
-        p.chmod(0o644)
-    if allowlist:
-        p = live_allowlist_path(identity)
-        p.write_text(allowlist)
-        p.chmod(0o644)
-    return d
-
-
-def transcript_snapshot_dir(identity: str) -> Path:
-    """Where agent session snapshots are kept for resume flows."""
-    return bottle_state_dir(identity) / _TRANSCRIPT_SUBDIR
-
-
-# --- Per-sidecar scratch subdirs (PRD 0018 chunk 2) ------------------------
-#
-# Each sidecar gets its own subdir under the bottle's state dir for
-# bind-mount sources (config, CAs, hooks, etc.). Prepare-time writes
-# land here; the state dir's normal cleanup (`cleanup_state`) reaps
-# them along with everything else when the bottle session ends and
-# nothing requested preservation.
-
-
-def egress_state_dir(identity: str) -> Path:
-    """State subdir for the egress sidecar: routes.yaml + the
-    per-bottle mitmproxy CA. Bind-mount source from chunk 3 onward."""
-    return bottle_state_dir(identity) / _EGRESS_SUBDIR
-
-
-def git_gate_state_dir(identity: str) -> Path:
-    """State subdir for the git-gate sidecar: entrypoint + hooks +
-    per-upstream known_hosts. Bind-mount source from chunk 3
-    onward."""
-    return bottle_state_dir(identity) / _GIT_GATE_SUBDIR
-
-
-def supervise_state_dir(identity: str) -> Path:
-    """State subdir reserved for supervise sidecar bind-mount sources.
-    Runtime queue/audit rows live in the host-level bot-bottle SQLite
-    database, so they survive state-dir cleanup."""
-    return bottle_state_dir(identity) / _SUPERVISE_SUBDIR
-
-
-def agent_state_dir(identity: str) -> Path:
-    """State subdir for the agent's prepare-time scratch files: the
-    env file (docker --env-file source) and the prompt file."""
-    return bottle_state_dir(identity) / _AGENT_SUBDIR
-
-
-# --- Preserve-on-close marker ----------------------------------------------
-
-
-def preserve_marker_path(identity: str) -> Path:
-    return bottle_state_dir(identity) / _PRESERVE_MARKER
-
-
-def mark_preserved(identity: str) -> Path:
-    """Mark this bottle's state for preservation across session
-    teardown so cli.py's session-end cleanup leaves the state dir
-    intact for a subsequent `cli.py resume`."""
-    path = preserve_marker_path(identity)
-    path.parent.mkdir(parents=True, exist_ok=True)
-    path.touch()
-    return path
-
-
-def is_preserved(identity: str) -> bool:
-    return preserve_marker_path(identity).exists()
-
-
-def clear_preserve_marker(identity: str) -> None:
-    """Idempotent removal. Called at fresh launch (start or resume)
-    so a marker left from a prior preserved session doesn't keep
-    state alive past the next normal session-end."""
-    try:
-        preserve_marker_path(identity).unlink()
-    except FileNotFoundError:
-        pass
-
-
-def cleanup_state(identity: str) -> None:
-    """Remove the per-bottle state dir entirely. Called by cli.py
-    when a bottle session ends and is_preserved(identity) is False.
-    Idempotent — missing dir is success."""
-    import shutil
-    state_dir = bottle_state_dir(identity)
-    if state_dir.is_dir():
-        shutil.rmtree(state_dir, ignore_errors=True)
-
-
-__all__ = [
-    "BottleMetadata",
-    "agent_state_dir",
-    "bottle_identity",
-    "bottle_state_dir",
-    "cleanup_state",
-    "clear_preserve_marker",
-    "committed_image_path",
-    "egress_state_dir",
-    "git_gate_state_dir",
-    "is_preserved",
-    "mark_preserved",
-    "metadata_path",
-    "per_bottle_dockerfile",
-    "per_bottle_dockerfile_path",
-    "per_bottle_image_tag",
-    "preserve_marker_path",
-    "read_committed_image",
-    "read_metadata",
-    "supervise_state_dir",
-    "transcript_snapshot_dir",
-    "write_committed_image",
-    "write_metadata",
-    "write_per_bottle_dockerfile",
-]
+from .bottle.state import *  # noqa: F403

bot_bottle/cli/__init__.py

@@ -1,6 +1,6 @@
 """Main CLI dispatcher.
 
-Commands: backend, cleanup, commit, edit, info, init, list, resume, start, supervise
+Commands: cleanup, commit, edit, info, init, list, resume, start, supervise
 """
 
 from __future__ import annotations
@@ -13,7 +13,6 @@ from ..manifest import ManifestError
 from ..store_manager import StoreManager
 from ._common import PROG
 from . import list as _list_mod
-from .backend import cmd_backend
 from .cleanup import cmd_cleanup
 from .commit import cmd_commit
 from .edit import cmd_edit
@@ -26,7 +25,6 @@ from .supervise import cmd_supervise
 cmd_list = _list_mod.cmd_list
 
 COMMANDS = {
-    "backend": cmd_backend,
     "cleanup": cmd_cleanup,
     "commit": cmd_commit,
     "edit": cmd_edit,
@@ -42,7 +40,6 @@ COMMANDS = {
 def usage() -> None:
     sys.stderr.write(f"usage: {PROG} <command> [args...]\n\n")
     sys.stderr.write("Commands:\n")
-    sys.stderr.write("  backend   set up / check / undo a backend's host prerequisites (setup|status|teardown)\n")
     sys.stderr.write("  cleanup   stop and remove all active bot-bottle containers\n")
     sys.stderr.write("  commit    snapshot a running bottle's container state to a Docker image\n")
     sys.stderr.write("  edit      open an agent in vim for editing\n")

bot_bottle/cli/backend.py

@@ -1,46 +0,0 @@
-"""`backend` CLI command — generic host setup/status across backends.
-
-`./cli.py backend setup    [--backend=NAME]` provisions (or points at how
-to provision) the chosen backend's one-time host prerequisites.
-`./cli.py backend status   [--backend=NAME]` reports readiness.
-`./cli.py backend teardown [--backend=NAME]` undoes setup (uninstall).
-
-All dispatch to the backend's `setup()` / `status()` / `teardown()`
-classmethods, so there are no backend-specific commands — swapping
-backends is just a different `--backend` (or `$BOT_BOTTLE_BACKEND`, or
-the host default).
-"""
-
-from __future__ import annotations
-
-import argparse
-
-from ..backend import get_bottle_backend, known_backend_names
-from ._common import PROG
-
-
-def cmd_backend(args: list[str]) -> int:
-    parser = argparse.ArgumentParser(
-        prog=f"{PROG} backend",
-        description="Set up or check a backend's host prerequisites.",
-    )
-    parser.add_argument(
-        "action",
-        choices=("setup", "status", "teardown"),
-        help="setup: provision/print host prerequisites; status: report "
-             "readiness; teardown: undo setup (uninstall)",
-    )
-    parser.add_argument(
-        "--backend",
-        choices=known_backend_names(),
-        default=None,
-        help="backend to target (default: $BOT_BOTTLE_BACKEND or the host default)",
-    )
-    ns = parser.parse_args(args)
-
-    backend = get_bottle_backend(ns.backend)
-    if ns.action == "setup":
-        return backend.setup()
-    if ns.action == "teardown":
-        return backend.teardown()
-    return backend.status()

bot_bottle/cli/cleanup.py

@@ -1,14 +1,14 @@
 """cleanup: stop and remove all orphaned bot-bottle resources.
 
-Walks every registered backend (docker, firecracker, macos-container)
-so a single `./cli.py cleanup` reaps every backend's leftovers — a
-firecracker bottle's sidecars won't survive a docker-only cleanup pass
-(issue addressed alongside #77).
+Walks every registered backend (docker + smolmachines) so a single
+`./cli.py cleanup` reaps both backends' leftovers — orphaned
+smolvm machines won't survive a docker-only cleanup pass (issue
+addressed alongside #77).
 
 Each backend's `prepare_cleanup` enumerates its own resources;
 docker's `_list_orphan_state_dirs` consults
 `enumerate_active_agents()` for the union of live identities so
-state dirs of running non-docker bottles aren't reaped. State
+state dirs of running smolmachines bottles aren't reaped. State
 dirs are shared layout, so docker is the single owner of that
 bucket.
 

bot_bottle/cli/commit.py

@@ -2,10 +2,10 @@
 
 Docker bottles are committed to a local Docker image. Macos-container
 bottles are exported and rebuilt as a local Apple Container image.
-Firecracker bottles stream the guest rootfs out over SSH and rebuild a
-local Docker image. The resulting reference is stored in per-bottle
-state so the next `./cli.py resume <slug>` boots from the snapshot
-instead of rebuilding from the Dockerfile.
+Smolmachines bottles are packed from the running VM into a
+`.smolmachine` artifact. The resulting reference is stored in
+per-bottle state so the next `./cli.py resume <slug>` boots from the
+snapshot instead of rebuilding from the Dockerfile.
 """
 
 from __future__ import annotations
@@ -14,7 +14,7 @@ import argparse
 
 from ..backend import enumerate_active_agents
 from ..backend.freeze import CommitCancelled, get_freezer
-from ..bottle_state import read_metadata
+from ..bottle.state import read_metadata
 from ..log import die
 from ._common import PROG
 from . import tui

bot_bottle/cli/list.py

@@ -45,9 +45,8 @@ def cmd_list(argv: list[str]) -> int:
             print(name)
         return 0
 
-    # `active` enumerates every backend (docker, firecracker,
-    # macos-container) so non-docker bottles aren't hidden behind
-    # the env var.
+    # `active` enumerates every backend (docker + smolmachines)
+    # so smolmachines bottles aren't hidden behind the env var.
     active = enumerate_active_agents()
     if not active:
         print("no active bot-bottle bottles", file=sys.stderr)

bot_bottle/cli/resume.py

@@ -17,7 +17,7 @@ from __future__ import annotations
 import argparse
 
 from ..backend import BottleSpec
-from ..bottle_state import read_metadata
+from ..bottle.state import read_metadata
 from ..log import die
 from ..manifest import ManifestIndex
 from ._common import PROG, USER_CWD
@@ -27,12 +27,34 @@ from .start import _launch_bottle
 def cmd_resume(argv: list[str]) -> int:
     parser = argparse.ArgumentParser(prog=f"{PROG} resume", add_help=True)
     parser.add_argument("--dry-run", action="store_true")
+    parser.add_argument(
+        "--headless",
+        action="store_true",
+        help=(
+            "non-interactive rehydrate: deliver --prompt to the agent and "
+            "skip the y/N preflight. For orchestrators / the freeze-rehydrate "
+            "loop."
+        ),
+    )
+    parser.add_argument(
+        "--prompt",
+        default=None,
+        help="follow-up prompt delivered to the agent (required with --headless)",
+    )
     parser.add_argument(
         "identity",
         help="bottle identity from a prior `start` (see its session-end output)",
     )
     args = parser.parse_args(argv)
 
+    if args.prompt and not args.headless:
+        die("--prompt is only valid with --headless")
+    if args.headless and not args.prompt:
+        die(
+            "--headless requires --prompt: "
+            "./cli.py resume <identity> --headless --prompt 'Address the review'"
+        )
+
     metadata = read_metadata(args.identity)
     if metadata is None:
         die(
@@ -52,8 +74,11 @@ def cmd_resume(argv: list[str]) -> int:
         bottle_names=tuple(metadata.bottle_names),
     )
     backend_name = metadata.backend or None
-    return _launch_bottle(
+    _, rc = _launch_bottle(
         spec,
         dry_run=args.dry_run,
         backend_name=backend_name,
+        assume_yes=args.headless,
+        headless_prompt_text=args.prompt or "",
     )
+    return rc

bot_bottle/cli/start.py

@@ -31,7 +31,7 @@ from ..backend import (
 )
 from ..backend.docker import util as docker_mod
 from ..backend.docker.bottle_plan import DockerBottlePlan
-from ..bottle_state import (
+from ..bottle.state import (
     cleanup_state,
     is_preserved,
     mark_preserved,
@@ -151,11 +151,12 @@ def cmd_start(argv: list[str]) -> int:
         color=color,
         bottle_names=bottle_names,
     )
-    return _launch_bottle(
+    _, rc = _launch_bottle(
         spec,
         dry_run=dry_run,
         backend_name=backend_name,
     )
+    return rc
 
 
 # --- Headless launch -----------------------------------------------------
@@ -211,13 +212,14 @@ def _start_headless(
         bottle_names=bottle_names,
         headless=True,
     )
-    return _launch_bottle(
+    _, rc = _launch_bottle(
         spec,
         dry_run=dry_run,
         backend_name=backend_name,
         assume_yes=True,
         headless_prompt_text=prompt,
     )
+    return rc
 
 
 def _uniquify_label_headless(label: str) -> str:
@@ -506,11 +508,16 @@ def _launch_bottle(
     backend_name: str | None = None,
     assume_yes: bool = False,
     headless_prompt_text: str = "",
-) -> int:
+) -> tuple[str, int]:
     """Shared launch core for `start` and `resume`. Builds the plan,
     prints / dry-runs / prompts as appropriate, brings the bottle up,
     attaches claude, and prints the resume hint on session end.
 
+    Returns ``(slug, exit_code)`` where ``slug`` is the bottle identity
+    (empty string when the launch was aborted before a slug was minted)
+    and ``exit_code`` is the agent process's exit code (0 on clean exit
+    or when launch was aborted before the agent ran).
+
     `assume_yes` skips the interactive y/N confirmation (headless /
     orchestrator launches), where there is no human at the prompt.
 
@@ -519,6 +526,7 @@ def _launch_bottle(
     agent receives the initial task without interactive input."""
     stage_dir = Path(tempfile.mkdtemp(prefix="bot-bottle-stage."))
     identity = ""
+    exit_code = 0
     try:
         plan, identity = prepare_with_preflight(
             spec,
@@ -529,7 +537,7 @@ def _launch_bottle(
             backend_name=backend_name,
         )
         if plan is None:
-            return 0
+            return identity, 0
 
         backend = get_bottle_backend(backend_name)
         with backend.launch(plan) as bottle:
@@ -556,7 +564,7 @@ def _launch_bottle(
             # Ctrl-Cs / OOM kills before cleanup removes the state dir.
             if agent_provider_template == "claude":
                 capture_claude_session_state(identity, exit_code)
-        return 0
+        return identity, exit_code
     finally:
         # PRD 0018 chunk 2: prepare now writes the bottle's bind-mount
         # sources under state/<slug>/. If we never reached the

bot_bottle/cli/supervise.py

@@ -19,8 +19,8 @@ from dataclasses import dataclass
 from datetime import datetime, timezone
 from pathlib import Path
 
-from ..paths import bot_bottle_root
-from ..bottle_state import read_metadata
+from .. import supervise as _supervise
+from ..bottle.state import read_metadata
 from ..backend.docker.egress_apply import (
     EgressApplyError,
     applicator as _docker_applicator,
@@ -28,6 +28,9 @@ from ..backend.docker.egress_apply import (
 from ..backend.macos_container.egress_apply import (
     applicator as _macos_applicator,
 )
+from ..backend.smolmachines.egress_apply import (
+    applicator as _smolmachines_applicator,
+)
 from ..log import Die, error, info
 
 from ..supervise import (
@@ -76,6 +79,8 @@ def apply_routes_change(slug: str, content: str) -> tuple[str, str]:
     backend = meta.backend if meta is not None else ""
     if backend == "macos-container":
         return _macos_applicator.apply_routes_change(slug, content)
+    if backend == "smolmachines":
+        return _smolmachines_applicator.apply_routes_change(slug, content)
     return _docker_applicator.apply_routes_change(slug, content)
 
 
@@ -276,7 +281,7 @@ def _write_crash_log(exc: BaseException) -> Path:
     )
     entry = f"=== supervise crash {stamp} ===\n{body}\n"
     try:
-        log_dir = bot_bottle_root() / "logs"
+        log_dir = _supervise.bot_bottle_root() / "logs"
         log_dir.mkdir(parents=True, exist_ok=True)
         path = log_dir / "supervise-crash.log"
         with path.open("a", encoding="utf-8") as fh:

bot_bottle/contrib/forge/base.py

@@ -0,0 +1,165 @@
+"""Forge abstraction (PRD forge-native-integration, chunk 3).
+
+The `Forge` abstract class is the provider-agnostic surface a forge
+sidecar dispatches to: read issues/comments, post comments, edit
+descriptions, and the membership / PR lookups the orchestrator needs.
+Each forge (Gitea first) implements it; the sidecar protocol and the
+agent prompt stay forge-agnostic.
+
+`signal_done` is deliberately *not* a `Forge` method — completion is a
+sidecar concept relayed to the orchestrator over a queue dir, not a
+forge API operation.
+
+`ScopedForge` enforces the PRD's **read-anywhere / write-scoped** model:
+reads pass through to any issue/PR for context; writes are rejected
+unless the target is the assigned issue or one of its PRs. This bounds
+the blast radius of a prompt-injected agent below repo-wide API-key
+permissions.
+"""
+
+from __future__ import annotations
+
+import abc
+from collections.abc import Iterable
+from dataclasses import dataclass
+
+
+@dataclass(frozen=True)
+class Issue:
+    """A forge issue (not a PR — see `PullRequest`)."""
+
+    number: int
+    title: str
+    body: str
+    state: str  # "open" | "closed"
+
+
+@dataclass(frozen=True)
+class PullRequest:
+    """A forge pull request. Kept distinct from `Issue` even though some
+    forges model PRs as issues on the wire: the domain objects carry
+    different data (a PR has merge state) and are read through different
+    methods (`read_pr` vs `read_issue`)."""
+
+    number: int
+    title: str
+    body: str
+    state: str  # "open" | "closed"
+    merged: bool
+
+
+@dataclass(frozen=True)
+class Comment:
+    id: int
+    user: str  # login of the comment author
+    body: str
+
+
+class ForgeScopeError(PermissionError):
+    """Raised by `ScopedForge` when a write targets an issue/PR outside
+    the assigned scope."""
+
+
+class Forge(abc.ABC):
+    """Provider-agnostic forge operations. Implementations wrap a
+    per-provider HTTP client and translate to `Issue` / `Comment`."""
+
+    @abc.abstractmethod
+    def read_issue(self, number: int) -> Issue:
+        """Read an issue body (read-anywhere)."""
+
+    @abc.abstractmethod
+    def read_pr(self, number: int) -> PullRequest:
+        """Read a pull request, including its merge state (read-anywhere)."""
+
+    @abc.abstractmethod
+    def read_comments(self, number: int) -> list[Comment]:
+        """Read a thread's comments (read-anywhere)."""
+
+    @abc.abstractmethod
+    def post_comment(self, number: int, body: str) -> None:
+        """Post a comment to an issue or PR (write-scoped)."""
+
+    @abc.abstractmethod
+    def update_description(self, number: int, body: str) -> None:
+        """Replace an issue or PR body (write-scoped)."""
+
+    @abc.abstractmethod
+    def is_org_member(self, org: str, username: str) -> bool:
+        """Whether `username` is a member of `org`."""
+
+    @abc.abstractmethod
+    def get_pr_for_issue(self, number: int) -> int | None:
+        """The PR number linked to an issue, or None when there is none."""
+
+    @abc.abstractmethod
+    def is_pr_open(self, number: int) -> bool:
+        """Whether the given PR is still open."""
+
+
+class ScopedForge(Forge):
+    """Read-anywhere / write-scoped wrapper around a concrete `Forge`.
+
+    `post_comment` and `update_description` are rejected with
+    `ForgeScopeError` unless the target number is the assigned issue or
+    one of the assigned PRs. Every other method delegates unchanged, so
+    reads, membership checks, and PR lookups work against any number for
+    context.
+
+    The writable set is fixed at construction. The sidecar reconstructs
+    a `ScopedForge` when a PR is discovered (`get_pr_for_issue`) so the
+    new PR becomes writable; this class does not mutate its own scope.
+    """
+
+    def __init__(
+        self,
+        inner: Forge,
+        *,
+        assigned_issue: int,
+        assigned_prs: Iterable[int] = (),
+    ) -> None:
+        self._inner = inner
+        self._assigned_issue = assigned_issue
+        self._writable = {assigned_issue, *assigned_prs}
+
+    @property
+    def writable(self) -> frozenset[int]:
+        return frozenset(self._writable)
+
+    def _check_write(self, number: int) -> None:
+        if number not in self._writable:
+            allowed = ", ".join(str(n) for n in sorted(self._writable))
+            raise ForgeScopeError(
+                f"write to #{number} denied: out of assigned scope "
+                f"(writable: {allowed})"
+            )
+
+    # --- read-anywhere: pass through --------------------------------------
+
+    def read_issue(self, number: int) -> Issue:
+        return self._inner.read_issue(number)
+
+    def read_pr(self, number: int) -> PullRequest:
+        return self._inner.read_pr(number)
+
+    def read_comments(self, number: int) -> list[Comment]:
+        return self._inner.read_comments(number)
+
+    def is_org_member(self, org: str, username: str) -> bool:
+        return self._inner.is_org_member(org, username)
+
+    def get_pr_for_issue(self, number: int) -> int | None:
+        return self._inner.get_pr_for_issue(number)
+
+    def is_pr_open(self, number: int) -> bool:
+        return self._inner.is_pr_open(number)
+
+    # --- write-scoped: check then delegate --------------------------------
+
+    def post_comment(self, number: int, body: str) -> None:
+        self._check_write(number)
+        self._inner.post_comment(number, body)
+
+    def update_description(self, number: int, body: str) -> None:
+        self._check_write(number)
+        self._inner.update_description(number, body)

bot_bottle/contrib/gitea/client.py

@@ -0,0 +1,174 @@
+"""Gitea HTTP client + `GiteaForge` (PRD forge-native-integration, chunk 3).
+
+`GiteaClient` is the thin stdlib-only HTTP transport (mirrors
+`deploy_key_provisioner.py`: `urllib.request`, bounded timeouts,
+structured error bodies). `GiteaForge` adapts it to the provider-agnostic
+`Forge` surface.
+
+Unlike the option-2 design, the token is held here (the sidecar process
+owns it) and passed to the client directly — there is no agent-side
+cred-proxy route, because the agent never makes forge calls. The HTTP
+client is the one piece shared with `GiteaDeployKeyProvisioner`; the two
+are deliberately *not* unified behind a common abstract base (see the
+deferral note in the PRD).
+"""
+
+from __future__ import annotations
+
+import json
+import urllib.error
+import urllib.request
+from typing import Any
+
+from ..forge.base import Comment, Forge, Issue, PullRequest
+
+# Bound every Gitea call: a hung instance must not stall the sidecar.
+_API_TIMEOUT_SECS = 30
+
+
+class GiteaClient:
+    """Thin authenticated HTTP client for one repo's Gitea API.
+
+    `api_url` is the API base *including* `/api/v1` (matching the
+    `FORGE_GITEA_API` env var), e.g. `https://gitea.example.com/api/v1`.
+    """
+
+    def __init__(self, *, api_url: str, owner: str, repo: str, token: str) -> None:
+        self._api_url = api_url.rstrip("/")
+        self._owner = owner
+        self._repo = repo
+        self._token = token
+
+    # --- low-level request -------------------------------------------------
+
+    def _request(
+        self, method: str, path: str, *, body: dict[str, Any] | None = None
+    ) -> tuple[int, Any]:
+        """Issue an authenticated request. Returns `(status, parsed_json)`;
+        parsed_json is None when the response has no body. Raises
+        `RuntimeError` on any non-2xx except where callers special-case
+        the HTTPError themselves (membership 404)."""
+        url = f"{self._api_url}{path}"
+        data = json.dumps(body).encode() if body is not None else None
+        headers = {"Authorization": f"token {self._token}"}
+        if data is not None:
+            headers["Content-Type"] = "application/json"
+        req = urllib.request.Request(url, data=data, headers=headers, method=method)
+        with urllib.request.urlopen(req, timeout=_API_TIMEOUT_SECS) as resp:
+            raw = resp.read()
+            parsed = json.loads(raw) if raw else None
+            return resp.status, parsed
+
+    def _repo_path(self, suffix: str) -> str:
+        return f"/repos/{self._owner}/{self._repo}{suffix}"
+
+    # --- operations --------------------------------------------------------
+
+    def is_org_member(self, org: str, username: str) -> bool:
+        """GET /orgs/{org}/members/{username}: 2xx → member, 404 → not.
+        Other errors propagate so a misconfigured token fails loudly."""
+        url = f"{self._api_url}/orgs/{org}/members/{username}"
+        req = urllib.request.Request(
+            url, headers={"Authorization": f"token {self._token}"}, method="GET"
+        )
+        try:
+            with urllib.request.urlopen(req, timeout=_API_TIMEOUT_SECS):
+                return True
+        except urllib.error.HTTPError as exc:
+            if exc.code == 404:
+                return False
+            raise RuntimeError(
+                f"org membership check failed for {org}/{username}: "
+                f"HTTP {exc.code} — {_read_error_body(exc)}"
+            ) from exc
+
+    def get_issue(self, number: int) -> dict[str, Any]:
+        _status, body = self._request("GET", self._repo_path(f"/issues/{number}"))
+        return body or {}
+
+    def get_comments(self, number: int) -> list[dict[str, Any]]:
+        _status, body = self._request(
+            "GET", self._repo_path(f"/issues/{number}/comments")
+        )
+        return body or []
+
+    def post_comment(self, number: int, body: str) -> None:
+        self._request(
+            "POST",
+            self._repo_path(f"/issues/{number}/comments"),
+            body={"body": body},
+        )
+
+    def patch_issue_body(self, number: int, body: str) -> None:
+        self._request(
+            "PATCH", self._repo_path(f"/issues/{number}"), body={"body": body}
+        )
+
+    def get_pull(self, number: int) -> dict[str, Any]:
+        _status, body = self._request("GET", self._repo_path(f"/pulls/{number}"))
+        return body or {}
+
+
+class GiteaForge(Forge):
+    """`Forge` over a `GiteaClient`."""
+
+    def __init__(self, client: GiteaClient) -> None:
+        self._client = client
+
+    def read_issue(self, number: int) -> Issue:
+        raw = self._client.get_issue(number)
+        return Issue(
+            number=int(raw.get("number", number)),
+            title=str(raw.get("title", "")),
+            body=str(raw.get("body", "") or ""),
+            state=str(raw.get("state", "")),
+        )
+
+    def read_pr(self, number: int) -> PullRequest:
+        raw = self._client.get_pull(number)
+        return PullRequest(
+            number=int(raw.get("number", number)),
+            title=str(raw.get("title", "")),
+            body=str(raw.get("body", "") or ""),
+            state=str(raw.get("state", "")),
+            merged=bool(raw.get("merged", False)),
+        )
+
+    def read_comments(self, number: int) -> list[Comment]:
+        return [
+            Comment(
+                id=int(c.get("id", 0)),
+                user=str((c.get("user") or {}).get("login", "")),
+                body=str(c.get("body", "") or ""),
+            )
+            for c in self._client.get_comments(number)
+        ]
+
+    def post_comment(self, number: int, body: str) -> None:
+        self._client.post_comment(number, body)
+
+    def update_description(self, number: int, body: str) -> None:
+        self._client.patch_issue_body(number, body)
+
+    def is_org_member(self, org: str, username: str) -> bool:
+        return self._client.is_org_member(org, username)
+
+    def get_pr_for_issue(self, number: int) -> int | None:
+        """Gitea models a PR as an issue with the same number, exposing a
+        `pull_request` object on the issue. When the queried number is
+        itself a PR, return it; otherwise None. (The orchestrator tracks
+        the issue→PR mapping in forge state for the cross-number case.)"""
+        raw = self._client.get_issue(number)
+        if raw.get("pull_request"):
+            return int(raw.get("number", number))
+        return None
+
+    def is_pr_open(self, number: int) -> bool:
+        return self.read_pr(number).state == "open"
+
+
+def _read_error_body(exc: urllib.error.HTTPError) -> str:
+    try:
+        return exc.read().decode("utf-8", errors="replace")
+    except Exception:  # pylint: disable=broad-exception-caught
+        return ""

bot_bottle/contrib/gitea/forge_state.py

@@ -0,0 +1,171 @@
+"""Forge state persistence (PRD forge-native-integration, chunk 2).
+
+The orchestrator tracks one record per forge-targeted issue so it can
+map an incoming webhook back to the bottle handling it, drive the
+freeze / rehydrate loop, and run the watchdog.
+
+State is stored in a local SQLite database in `~/.bot-bottle/`. Access
+goes through the thin `ForgeStateStore` CRUD interface so the backing
+store (location or engine) can be swapped without touching callers;
+`SqliteForgeStateStore` is the first implementation.
+"""
+
+from __future__ import annotations
+
+import abc
+import json
+import sqlite3
+from dataclasses import dataclass, field
+from pathlib import Path
+
+from ...supervise import bot_bottle_root
+
+_DB_FILENAME = "bot-bottle.db"
+
+# Lifecycle: a bottle is launched (running), frozen on the done signal,
+# and destroyed when the PR closes.
+STATUS_RUNNING = "running"
+STATUS_FROZEN = "frozen"
+STATUS_DESTROYED = "destroyed"
+
+
+@dataclass
+class ForgeState:
+    """One forge-targeted issue's bottle lifecycle record."""
+
+    owner: str
+    repo: str
+    issue_number: int
+    slug: str
+    agent_name: str
+    bottle_names: list[str] = field(default_factory=list)
+    backend_name: str = ""
+    agent_git_user: str = ""
+    pr_number: int | None = None
+    status: str = STATUS_RUNNING
+    last_checkin_at: str = ""
+
+
+class ForgeStateStore(abc.ABC):
+    """Thin CRUD surface over forge state. Implementations back it with a
+    concrete store; callers depend only on this interface so the storage
+    location/engine is swappable."""
+
+    @abc.abstractmethod
+    def upsert(self, state: ForgeState) -> None:
+        """Insert or replace the record keyed by (owner, repo, issue)."""
+
+    @abc.abstractmethod
+    def get(self, owner: str, repo: str, issue_number: int) -> ForgeState | None:
+        """Fetch one record, or None when absent."""
+
+    @abc.abstractmethod
+    def delete(self, owner: str, repo: str, issue_number: int) -> None:
+        """Remove a record. Missing is success (idempotent)."""
+
+    @abc.abstractmethod
+    def all(self) -> list[ForgeState]:
+        """Every record, for the status table and the watchdog sweep."""
+
+
+def default_db_path() -> Path:
+    return bot_bottle_root() / _DB_FILENAME
+
+
+class SqliteForgeStateStore(ForgeStateStore):
+    """SQLite-backed `ForgeStateStore`. The database lives at
+    `~/.bot-bottle/bot-bottle.db` by default; pass `db_path` to point at
+    a different location (tests, alternate homes)."""
+
+    def __init__(self, db_path: Path | None = None) -> None:
+        self._db_path = db_path or default_db_path()
+        self._db_path.parent.mkdir(parents=True, exist_ok=True)
+        with self._connect() as conn:
+            conn.execute(
+                """
+                CREATE TABLE IF NOT EXISTS forge_state (
+                    owner           TEXT    NOT NULL,
+                    repo            TEXT    NOT NULL,
+                    issue_number    INTEGER NOT NULL,
+                    slug            TEXT    NOT NULL,
+                    agent_name      TEXT    NOT NULL,
+                    bottle_names    TEXT    NOT NULL,
+                    backend_name    TEXT    NOT NULL,
+                    agent_git_user  TEXT    NOT NULL,
+                    pr_number       INTEGER,
+                    status          TEXT    NOT NULL,
+                    last_checkin_at TEXT    NOT NULL,
+                    PRIMARY KEY (owner, repo, issue_number)
+                )
+                """
+            )
+
+    def _connect(self) -> sqlite3.Connection:
+        conn = sqlite3.connect(self._db_path)
+        conn.row_factory = sqlite3.Row
+        return conn
+
+    def upsert(self, state: ForgeState) -> None:
+        with self._connect() as conn:
+            conn.execute(
+                """
+                INSERT OR REPLACE INTO forge_state (
+                    owner, repo, issue_number, slug, agent_name,
+                    bottle_names, backend_name, agent_git_user,
+                    pr_number, status, last_checkin_at
+                ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+                """,
+                (
+                    state.owner,
+                    state.repo,
+                    state.issue_number,
+                    state.slug,
+                    state.agent_name,
+                    json.dumps(state.bottle_names),
+                    state.backend_name,
+                    state.agent_git_user,
+                    state.pr_number,
+                    state.status,
+                    state.last_checkin_at,
+                ),
+            )
+
+    def get(self, owner: str, repo: str, issue_number: int) -> ForgeState | None:
+        with self._connect() as conn:
+            row = conn.execute(
+                "SELECT * FROM forge_state "
+                "WHERE owner = ? AND repo = ? AND issue_number = ?",
+                (owner, repo, issue_number),
+            ).fetchone()
+        return _row_to_state(row) if row is not None else None
+
+    def delete(self, owner: str, repo: str, issue_number: int) -> None:
+        with self._connect() as conn:
+            conn.execute(
+                "DELETE FROM forge_state "
+                "WHERE owner = ? AND repo = ? AND issue_number = ?",
+                (owner, repo, issue_number),
+            )
+
+    def all(self) -> list[ForgeState]:
+        with self._connect() as conn:
+            rows = conn.execute(
+                "SELECT * FROM forge_state ORDER BY owner, repo, issue_number"
+            ).fetchall()
+        return [_row_to_state(row) for row in rows]
+
+
+def _row_to_state(row: sqlite3.Row) -> ForgeState:
+    return ForgeState(
+        owner=row["owner"],
+        repo=row["repo"],
+        issue_number=row["issue_number"],
+        slug=row["slug"],
+        agent_name=row["agent_name"],
+        bottle_names=json.loads(row["bottle_names"]),
+        backend_name=row["backend_name"],
+        agent_git_user=row["agent_git_user"],
+        pr_number=row["pr_number"],
+        status=row["status"],
+        last_checkin_at=row["last_checkin_at"],
+    )

bot_bottle/docker_cmd.py

@@ -1,27 +0,0 @@
-"""Lean, framework-free `docker` subprocess primitive.
-
-Deliberately a top-level module with a single stdlib import so it can be
-reused from anywhere without cost. It is intentionally *not* placed in
-`backend.docker.util`: importing that module runs `backend/__init__.py`,
-which eagerly loads all three bottle backends (docker + firecracker +
-macos) plus the manifest/egress/git-gate/supervise framework — ~76 modules
-— which would drag the whole backend layer into the deliberately-lean
-orchestrator. This primitive stays free of that so both the orchestrator's
-docker components and (in time) `backend.docker.util` can share it."""
-
-from __future__ import annotations
-
-import subprocess
-
-
-def run_docker(argv: list[str]) -> subprocess.CompletedProcess[str]:
-    """Run a `docker` command, capturing stdout/stderr as text. Never raises
-    on a non-zero exit — callers inspect `returncode` / `stderr` so they can
-    stay fail-closed or tolerate idempotent no-ops (e.g. removing an
-    already-absent container)."""
-    return subprocess.run(
-        argv, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True, check=False,
-    )
-
-
-__all__ = ["run_docker"]

bot_bottle/egress_addon.py

@@ -32,7 +32,6 @@ from egress_addon_core import (  # type: ignore[import-not-found]  # pylint: dis
     is_git_push_request,
     load_config,
     match_route,
-    resolve_client_config,
     outbound_scan_headers,
     route_to_yaml_dict,
     scan_inbound,
@@ -52,26 +51,11 @@ try:
 except ImportError:  # pragma: no cover - host-side path
     from bot_bottle import supervise as _sv  # type: ignore[import-not-found]
 
-try:
-    from policy_resolver import PolicyResolver  # type: ignore[import-not-found]
-except ImportError:  # pragma: no cover - host-side path
-    from bot_bottle.policy_resolver import PolicyResolver
-
 
 DEFAULT_ROUTES_PATH = "/etc/egress/routes.yaml"
 
 INTROSPECT_HOST = "_egress.local"
 
-# Consolidated (multi-tenant) mode: when this points at the per-host
-# orchestrator's control plane, the addon resolves each client's Config by
-# source IP per request instead of using a single static routes file. Unset
-# → legacy per-bottle single-tenant mode (unchanged).
-ORCHESTRATOR_URL_ENV = "BOT_BOTTLE_ORCHESTRATOR_URL"
-
-# App-layer identity token (defense-in-depth over the source-IP invariant);
-# the agent injects it, the addon strips it so it never leaks upstream.
-IDENTITY_HEADER = "x-bot-bottle-identity"
-
 # Seconds the egress proxy holds a token-blocked request open waiting for the
 # operator's supervisor decision (PRD 0062), overridable via env.
 DEFAULT_TOKEN_ALLOW_TIMEOUT_SECONDS = 300.0
@@ -88,17 +72,9 @@ _TOKEN_ALLOW_JUSTIFICATION = (
 
 
 class EgressAddon:
-    # Class default so addons built via __new__ (e.g. in tests) default to
-    # single-tenant; __init__ sets the instance attribute for real runs.
-    _resolver: "PolicyResolver | None" = None
-
     def __init__(self) -> None:
         self.routes_path = os.environ.get("EGRESS_ROUTES", DEFAULT_ROUTES_PATH)
         self.config: Config = Config(routes=())
-        # Consolidated mode: resolve per-client Config from the orchestrator.
-        # Absent → single-tenant (static routes file); behaviour unchanged.
-        orch_url = os.environ.get(ORCHESTRATOR_URL_ENV, "").strip()
-        self._resolver = PolicyResolver(orch_url) if orch_url else None
         # Tokens the operator has approved this session (PRD 0062). In-memory
         # only — a restart re-prompts. Mutated only from the asyncio loop that
         # runs the addon hooks, so no lock is needed.
@@ -218,20 +194,6 @@ class EgressAddon:
             + "\n"
         )
 
-    def _active_config(self, flow: http.HTTPFlow) -> Config:
-        """The Config to apply to this request. Single-tenant → the static
-        `self.config`. Consolidated → the calling bottle's Config, resolved
-        by source IP (fail-closed to deny-all if unattributed). The identity
-        token, if the agent injected one, is read then stripped so it never
-        leaks upstream."""
-        if self._resolver is None:
-            return self.config
-        conn = flow.client_conn
-        client_ip = conn.peername[0] if conn and conn.peername else ""
-        token = flow.request.headers.get(IDENTITY_HEADER, "")
-        flow.request.headers.pop(IDENTITY_HEADER, None)
-        return resolve_client_config(self._resolver, client_ip, token)
-
     async def request(self, flow: http.HTTPFlow) -> None:
         request_path, _, query = flow.request.path.partition("?")
 
@@ -239,12 +201,10 @@ class EgressAddon:
             self._serve_introspection(flow, request_path)
             return
 
-        config = self._active_config(flow)
-
         # DLP outbound scan BEFORE stripping auth — catches tokens the
         # agent tried to smuggle in any header, path, query param, or body.
         # Hostname is included to catch DNS-tunnelling exfiltration attempts.
-        route = match_route(config.routes, flow.request.pretty_host)
+        route = match_route(self.config.routes, flow.request.pretty_host)
         if route is not None:
             if not await self._handle_outbound_dlp(flow, route):
                 return
@@ -264,7 +224,7 @@ class EgressAddon:
 
         if is_git_fetch_request(request_path, query):
             git_decision = decide_git_fetch(
-                config.routes, flow.request.pretty_host,
+                self.config.routes, flow.request.pretty_host,
             )
             if git_decision.action == "block":
                 self._block(
@@ -282,7 +242,7 @@ class EgressAddon:
         req_headers = {k.lower(): v for k, v in flow.request.headers.items()}
 
         decision = decide(
-            config.routes,
+            self.config.routes,
             flow.request.pretty_host,
             request_path,
             os.environ,
@@ -297,7 +257,7 @@ class EgressAddon:
         if decision.inject_authorization is not None:
             flow.request.headers["authorization"] = decision.inject_authorization
 
-        if config.log >= LOG_FULL:
+        if self.config.log >= LOG_FULL:
             self._log_request(flow)
 
     def _block_dlp(self, flow: http.HTTPFlow, result: ScanResult) -> None:

bot_bottle/egress_addon_core.py

@@ -413,34 +413,6 @@ def load_config(text: str) -> "Config":
     return parse_config(payload)
 
 
-class PolicyResolverLike(typing.Protocol):
-    """The bit of `policy_resolver.PolicyResolver` this module needs — kept a
-    Protocol so egress_addon_core stays free of that import."""
-
-    def resolve(self, source_ip: str, identity_token: str = ...) -> "str | None":
-        ...
-
-
-def resolve_client_config(
-    resolver: PolicyResolverLike, client_ip: str, identity_token: str = ""
-) -> "Config":
-    """The calling client's egress Config, resolved from the orchestrator via
-    `resolver` and parsed — **fail-closed**. An unattributed client (None), a
-    resolver error, or an unparseable policy all yield a deny-all Config (no
-    routes → every request blocked). A compromised, absent, or confused
-    orchestrator must never *widen* a bottle's egress."""
-    try:
-        policy = resolver.resolve(client_ip, identity_token)
-    except Exception:  # noqa: BLE001  # pylint: disable=broad-exception-caught
-        return Config(routes=())  # orchestrator unreachable/errored → deny
-    if not policy:
-        return Config(routes=())  # unattributed or empty → deny-all
-    try:
-        return load_config(policy)
-    except ValueError:
-        return Config(routes=())  # unparseable policy → deny
-
-
 # ---------------------------------------------------------------------------
 # Match evaluation
 # ---------------------------------------------------------------------------
@@ -832,8 +804,6 @@ __all__ = [
     "is_git_push_request",
     "is_git_fetch_request",
     "load_config",
-    "resolve_client_config",
-    "PolicyResolverLike",
     "match_route",
     "outbound_scan_headers",
     "parse_config",

bot_bottle/egress_entrypoint.sh

@@ -37,8 +37,8 @@ if [ -n "$EGRESS_UPSTREAM_PROXY" ]; then
 fi
 
 # Bind address. Docker backend wants `0.0.0.0` (agent dials egress
-# directly via the docker network alias). A VM backend uses
-# EGRESS_LISTEN_HOST when a non-default binding is needed.
+# directly via the docker network alias). Smolmachines backend
+# uses EGRESS_LISTEN_HOST when a non-default binding is needed.
 LISTEN_HOST_FLAG=""
 if [ -n "$EGRESS_LISTEN_HOST" ]; then
   LISTEN_HOST_FLAG="--listen-host $EGRESS_LISTEN_HOST"

bot_bottle/git_gate_render.py

@@ -76,14 +76,14 @@ def git_gate_render_gitconfig(
     entries: tuple[ManifestGitEntry, ...], gate_host: str, *, scheme: str = "git",
 ) -> str:
     """Render the agent's ~/.gitconfig content for git-gate
-    `insteadOf` rewrites. Pure host-side, no docker / VM;
+    `insteadOf` rewrites. Pure host-side, no docker / smolvm;
     exposed for tests + reuse across backends.
 
     `gate_host` is the part of the URL between `<scheme>://` and the
     repo path — backends differ here:
       - docker:        `git-gate` (the short network alias)
-      - firecracker:   `<bundle_ip>:<port>` (no DNS on the
-                       point-to-point TAP link)
+      - smolmachines:  `<bundle_ip>:<port>` (no DNS in the
+                       TSI-allowlisted guest)
 
     Empty `entries` returns an empty string so callers can no-op
     cleanly without conditional formatting at the call site."""

bot_bottle/git_http_backend.py

@@ -1,9 +1,8 @@
 """Tiny smart-HTTP wrapper for git-gate repos.
 
-Used where `git://` push traffic over a host-published Docker port can
-hang before receive-pack reaches hooks (e.g. the firecracker backend,
-where the guest reaches the sidecar over the point-to-point TAP). The
-wrapper serves the same `/git/*.git` bare repos through
+Used by the smolmachines backend where `git://` push traffic over the
+host-published Docker port can hang before receive-pack reaches hooks.
+The wrapper serves the same `/git/*.git` bare repos through
 `git http-backend`, so pre-receive and upstream forwarding remain the
 git-gate enforcement point.
 """

bot_bottle/orchestrator/__init__.py

@@ -1,64 +0,0 @@
-"""Per-host orchestrator service (PRD 0070).
-
-A single persistent per-host service that will run the sidecar functions
-(egress / git-gate / supervise), coordinate with the console, and broker
-agent launches. This package is being built bottom-up, starting with the
-backend-neutral "consolidation core" that needs no VM packaging:
-
-  * `registry`      — the SQLite runtime-state store + fail-closed
-                      attribution (source IP + per-bottle identity token).
-  * `broker`        — the signed, structured launch-request contract + a
-                      `LaunchBroker` (stub for the harness) that verifies
-                      provenance before acting.
-  * `sidecar`       — the consolidated per-host sidecar: a `Sidecar`
-                      lifecycle contract (idempotent singleton) + a
-                      `DockerSidecar` impl. One sidecar shared by all
-                      bottles instead of one per bottle.
-  * `service`       — the `Orchestrator`: owns the registry, brokers the
-                      launch lifecycle (launch/teardown), manages the
-                      shared sidecar, attributes.
-  * `control_plane` — the HTTP control-plane RPC (launch / teardown /
-                      list / attribute / sidecar / health).
-
-The actual backend-native launch (a real docker/firecracker broker) and
-the egress/git/supervise data plane land in later slices once this core is
-proven (see the PRD sequencing: plain-process dev-harness -> docker
-orchestrator -> firecracker).
-"""
-
-from __future__ import annotations
-
-from .registry import BottleRecord, RegistryStore, new_identity_token
-from .broker import (
-    BrokerAuthError,
-    LaunchBroker,
-    LaunchRequest,
-    StubBroker,
-    sign_request,
-    verify_request,
-)
-from .docker_broker import DockerBroker, DockerBrokerError
-from .sidecar import DockerSidecar, Sidecar, SidecarError
-from .service import Orchestrator
-from .control_plane import ControlPlaneServer, dispatch, make_server
-
-__all__ = [
-    "BottleRecord",
-    "RegistryStore",
-    "new_identity_token",
-    "BrokerAuthError",
-    "LaunchBroker",
-    "LaunchRequest",
-    "StubBroker",
-    "DockerBroker",
-    "DockerBrokerError",
-    "Sidecar",
-    "DockerSidecar",
-    "SidecarError",
-    "sign_request",
-    "verify_request",
-    "Orchestrator",
-    "ControlPlaneServer",
-    "dispatch",
-    "make_server",
-]

bot_bottle/orchestrator/__main__.py

@@ -1,79 +0,0 @@
-"""Run the orchestrator control plane as a plain process (PRD 0070 dev-harness).
-
-    python -m bot_bottle.orchestrator [--host H] [--port P] [--db PATH]
-
-The PRD sequences the orchestrator as a plain-process dev-harness first, so
-the consolidation core (registry + attribution + HTTP control plane + live
-reload) can be exercised with fast iteration, decoupled from any VM /
-container packaging. Wrapping this exact service in a backend-native unit
-(docker container, then Firecracker VM) comes later.
-"""
-
-from __future__ import annotations
-
-import argparse
-import secrets
-from pathlib import Path
-
-from .. import log
-from .broker import LaunchBroker, StubBroker
-from .control_plane import make_server
-from .docker_broker import DockerBroker
-from .registry import RegistryStore, default_db_path
-from .service import Orchestrator
-from .sidecar import DockerSidecar, Sidecar
-
-
-def main(argv: list[str] | None = None) -> int:
-    """Parse args, migrate the registry, and serve the control plane."""
-    parser = argparse.ArgumentParser(prog="bot_bottle.orchestrator")
-    parser.add_argument("--host", default="127.0.0.1", help="bind address")
-    parser.add_argument("--port", type=int, default=8080, help="bind port (0 = ephemeral)")
-    parser.add_argument(
-        "--db", type=Path, default=None,
-        help=f"registry DB path (default: {default_db_path()})",
-    )
-    parser.add_argument(
-        "--broker", choices=("stub", "docker"), default="stub",
-        help="launch broker: 'stub' records requests; 'docker' runs containers",
-    )
-    parser.add_argument(
-        "--sidecar", action="store_true",
-        help="run one consolidated per-host sidecar bundle (build-if-missing)",
-    )
-    args = parser.parse_args(argv)
-
-    registry = RegistryStore(args.db)
-    registry.migrate()
-
-    # An ephemeral signing secret ties the orchestrator (signer) to its
-    # broker (verifier). 'stub' records launches instead of starting
-    # anything; 'docker' runs real containers (firecracker drops in later).
-    secret = secrets.token_bytes(32)
-    broker: LaunchBroker = DockerBroker(secret) if args.broker == "docker" else StubBroker(secret)
-    sidecar: Sidecar | None = DockerSidecar() if args.sidecar else None
-    orchestrator = Orchestrator(registry, broker, secret, sidecar)
-
-    # One persistent per-host sidecar, shared by every bottle: build the
-    # bundle image if missing, then bring the singleton up (idempotent).
-    if sidecar is not None:
-        orchestrator.ensure_sidecar()
-        log.info("consolidated sidecar ensured", context={"name": sidecar.name})
-
-    server = make_server(orchestrator, host=args.host, port=args.port)
-    bound_host, bound_port = server.server_address[0], server.server_address[1]
-    log.info(
-        "orchestrator control plane listening",
-        context={"host": bound_host, "port": bound_port, "db": str(registry.db_path)},
-    )
-    try:
-        server.serve_forever()
-    except KeyboardInterrupt:
-        log.info("orchestrator shutting down")
-    finally:
-        server.server_close()
-    return 0
-
-
-if __name__ == "__main__":
-    raise SystemExit(main())

bot_bottle/orchestrator/broker.py

@@ -1,176 +0,0 @@
-"""Launch broker contract (PRD 0070).
-
-A VM/container can't spawn its own host-network siblings, so the
-orchestrator brokers agent launches through a small privileged component.
-The request it sends is:
-
-  * **structured** — static flags + ids only (bottle id, pool slot, a
-    content-addressed image ref), never a free-form path or argv, so a
-    request can't be coerced into launching an arbitrary payload; and
-  * **signed** — wrapped as a compact JWS/JWT the broker verifies before
-    acting, so a *compromised co-located component* (an agent-facing
-    sidecar, say) can't forge a launch. This is the concrete form of the
-    "structured requests only" rule in the PRD security review.
-
-Signing is **HS256** over a secret shared by the orchestrator (signer) and
-the broker (verifier) — appropriate here because both are trusted host
-components provisioned together; the secret is exactly what an
-agent-facing component does not have. (Stdlib only — the project takes no
-runtime deps; a cross-host deployment could swap in an asymmetric alg.)
-"""
-
-from __future__ import annotations
-
-import abc
-import base64
-import hashlib
-import hmac
-import json
-import secrets
-import time
-from dataclasses import dataclass
-
-_JWT_HEADER = {"alg": "HS256", "typ": "JWT"}
-_ALLOWED_OPS = ("launch", "teardown")
-
-
-class BrokerAuthError(Exception):
-    """A broker request failed provenance or schema verification —
-    bad/absent signature, malformed token, or a payload that doesn't match
-    the fixed launch-request shape. Fail-closed: the broker must not act."""
-
-
-@dataclass(frozen=True)
-class LaunchRequest:
-    """The structured, un-coercible launch/teardown request. Ids + flags
-    only — `image_ref` is a content-addressed id, never a path/argv."""
-
-    op: str  # one of _ALLOWED_OPS
-    bottle_id: str
-    source_ip: str = ""
-    image_ref: str = ""
-    slot: int | None = None
-
-
-# --- minimal JWS/JWT (HS256), stdlib only ----------------------------------
-
-def _b64url(data: bytes) -> str:
-    return base64.urlsafe_b64encode(data).rstrip(b"=").decode("ascii")
-
-
-def _b64url_decode(text: str) -> bytes:
-    return base64.urlsafe_b64decode(text + "=" * (-len(text) % 4))
-
-
-def _mac(signing_input: str, secret: bytes) -> str:
-    digest = hmac.new(secret, signing_input.encode("ascii"), hashlib.sha256).digest()
-    return _b64url(digest)
-
-
-def sign_request(req: LaunchRequest, secret: bytes) -> str:
-    """Serialize `req` to signed-JWT form. Adds a per-signature `jti`
-    (replay id) and `iat` (issued-at)."""
-    claims: dict[str, object] = {
-        "op": req.op,
-        "bottle_id": req.bottle_id,
-        "source_ip": req.source_ip,
-        "image_ref": req.image_ref,
-        "slot": req.slot,
-        "jti": secrets.token_hex(8),
-        "iat": int(time.time()),
-    }
-    header = _b64url(json.dumps(_JWT_HEADER, sort_keys=True, separators=(",", ":")).encode())
-    payload = _b64url(json.dumps(claims, sort_keys=True, separators=(",", ":")).encode())
-    signing_input = f"{header}.{payload}"
-    return f"{signing_input}.{_mac(signing_input, secret)}"
-
-
-def verify_request(token: str, secret: bytes) -> LaunchRequest:
-    """Verify the signature and the request shape; return the parsed
-    request. Raises `BrokerAuthError` on any failure (fail-closed)."""
-    parts = token.split(".")
-    if len(parts) != 3:
-        raise BrokerAuthError("malformed token")
-    header_b, payload_b, sig = parts
-    if not hmac.compare_digest(_mac(f"{header_b}.{payload_b}", secret), sig):
-        raise BrokerAuthError("bad signature")
-    try:
-        header = json.loads(_b64url_decode(header_b))
-        claims = json.loads(_b64url_decode(payload_b))
-    except (ValueError, json.JSONDecodeError) as e:
-        raise BrokerAuthError("malformed token payload") from e
-    if not isinstance(header, dict) or header.get("alg") != "HS256":
-        raise BrokerAuthError("unexpected header/alg")
-    if not isinstance(claims, dict):
-        raise BrokerAuthError("claims are not an object")
-
-    op = claims.get("op")
-    bottle_id = claims.get("bottle_id")
-    source_ip = claims.get("source_ip", "")
-    image_ref = claims.get("image_ref", "")
-    slot = claims.get("slot")
-    if (
-        not isinstance(op, str) or op not in _ALLOWED_OPS
-        or not isinstance(bottle_id, str) or not bottle_id
-        or not isinstance(source_ip, str) or not isinstance(image_ref, str)
-        or not (slot is None or isinstance(slot, int))
-    ):
-        raise BrokerAuthError("request does not match the launch-request schema")
-    return LaunchRequest(
-        op=op, bottle_id=bottle_id, source_ip=source_ip, image_ref=image_ref, slot=slot
-    )
-
-
-# --- the broker itself ------------------------------------------------------
-
-class LaunchBroker(abc.ABC):
-    """Verifies a signed request came from the orchestrator, then performs
-    the backend-native launch/teardown. Subclasses implement `_launch` /
-    `_teardown`; verification is shared and fail-closed."""
-
-    def __init__(self, secret: bytes) -> None:
-        self._secret = secret
-
-    def submit(self, token: str) -> LaunchRequest:
-        """Verify `token` and perform its op. Returns the verified request;
-        raises `BrokerAuthError` if provenance/shape fails."""
-        req = verify_request(token, self._secret)
-        if req.op == "launch":
-            self._launch(req)
-        else:
-            self._teardown(req)
-        return req
-
-    @abc.abstractmethod
-    def _launch(self, req: LaunchRequest) -> None:
-        ...
-
-    @abc.abstractmethod
-    def _teardown(self, req: LaunchRequest) -> None:
-        ...
-
-
-class StubBroker(LaunchBroker):
-    """Dev-harness broker: records verified requests without launching
-    anything. Exercises the full sign -> verify -> act contract in-process."""
-
-    def __init__(self, secret: bytes) -> None:
-        super().__init__(secret)
-        self.launched: list[LaunchRequest] = []
-        self.torn_down: list[LaunchRequest] = []
-
-    def _launch(self, req: LaunchRequest) -> None:
-        self.launched.append(req)
-
-    def _teardown(self, req: LaunchRequest) -> None:
-        self.torn_down.append(req)
-
-
-__all__ = [
-    "BrokerAuthError",
-    "LaunchRequest",
-    "LaunchBroker",
-    "StubBroker",
-    "sign_request",
-    "verify_request",
-]

bot_bottle/orchestrator/control_plane.py

@@ -1,199 +0,0 @@
-"""Orchestrator HTTP control plane (PRD 0070).
-
-The backend-agnostic control-plane RPC (CLI / console -> orchestrator) over
-**HTTP** — the universal transport chosen in 0070 (works on every host; no
-vsock / unix-socket portability caveats):
-
-    GET    /health                    -> 200 {"status": "ok"}
-    GET    /sidecar                   -> 200 {"configured", ["name","running"]}
-    GET    /bottles                   -> 200 {"bottles": [ <redacted record>, ...]}
-    POST   /bottles                   -> 201 {"bottle_id","identity_token"}  (launch)
-                                         body: {"source_ip", ["image_ref"],
-                                                ["metadata"], ["policy"]}
-    PUT    /bottles/<bottle_id>/policy -> 200 {"updated": true} | 404  (live reload)
-                                         body: {"policy"}
-    DELETE /bottles/<bottle_id>        -> 200 {"torn_down": true} | 404  (teardown)
-    POST   /attribute                 -> 200 {"bottle_id"} | 403
-    POST   /resolve                   -> 200 {"bottle_id","policy"} | 403
-                                         body: {"source_ip","identity_token"}
-
-`POST /bottles` / `DELETE` drive the full launch lifecycle: they mint (or
-tear down) the bottle in the registry AND broker the backend-native launch
-via the orchestrator. Register/deregister without a launch are internal to
-`Orchestrator`, not exposed here.
-
-Routing/handling is the pure function `dispatch()` so it is unit-testable
-without a socket; `Handler` / `ControlPlaneServer` / `make_server` are a
-thin stdlib adapter around it. Listing redacts identity tokens — they are
-returned only once, to the caller that launches the bottle.
-"""
-
-from __future__ import annotations
-
-import http.server
-import json
-import os
-import socketserver
-import typing
-from urllib.parse import urlsplit
-
-from .service import Orchestrator
-
-# JSON body payload type (parsed request / rendered response).
-Json = dict[str, object]
-
-
-def _parse_json_object(body: bytes) -> Json:
-    """Parse a JSON object body. Raises ValueError for non-objects / bad JSON."""
-    if not body:
-        return {}
-    obj = json.loads(body)  # raises json.JSONDecodeError (a ValueError)
-    if not isinstance(obj, dict):
-        raise ValueError("request body must be a JSON object")
-    return obj
-
-
-def dispatch(  # pylint: disable=too-many-return-statements,too-many-branches
-    orch: Orchestrator, method: str, path: str, body: bytes
-) -> tuple[int, Json]:
-    """Route one control-plane request to a (status, payload) pair. Pure —
-    no I/O beyond the orchestrator — so it is fully testable without a socket."""
-    route = urlsplit(path).path.rstrip("/") or "/"
-
-    if method == "GET" and route == "/health":
-        return 200, {"status": "ok"}
-
-    if method == "GET" and route == "/sidecar":
-        return 200, orch.sidecar_status()
-
-    if method == "GET" and route == "/bottles":
-        return 200, {"bottles": [r.redacted() for r in orch.registry.all()]}
-
-    if method == "POST" and route == "/bottles":
-        try:
-            data = _parse_json_object(body)
-        except ValueError as e:
-            return 400, {"error": f"invalid JSON: {e}"}
-        source_ip = data.get("source_ip")
-        if not isinstance(source_ip, str) or not source_ip:
-            return 400, {"error": "source_ip (string) is required"}
-        image_ref = data.get("image_ref")
-        metadata = data.get("metadata")
-        policy = data.get("policy")
-        rec = orch.launch_bottle(
-            source_ip,
-            image_ref=image_ref if isinstance(image_ref, str) else "",
-            metadata=metadata if isinstance(metadata, str) else "",
-            policy=policy if isinstance(policy, str) else "",
-        )
-        return 201, {"bottle_id": rec.bottle_id, "identity_token": rec.identity_token}
-
-    if method == "PUT" and route.startswith("/bottles/") and route.endswith("/policy"):
-        bottle_id = route[len("/bottles/"):-len("/policy")]
-        try:
-            data = _parse_json_object(body)
-        except ValueError as e:
-            return 400, {"error": f"invalid JSON: {e}"}
-        policy = data.get("policy")
-        if not isinstance(policy, str):
-            return 400, {"error": "policy (string) is required"}
-        if orch.set_policy(bottle_id, policy):
-            return 200, {"updated": True}
-        return 404, {"error": "no such bottle"}
-
-    if method == "DELETE" and route.startswith("/bottles/"):
-        bottle_id = route[len("/bottles/"):]
-        if orch.teardown_bottle(bottle_id):
-            return 200, {"torn_down": True}
-        return 404, {"error": "no such bottle"}
-
-    if method == "POST" and route == "/attribute":
-        try:
-            data = _parse_json_object(body)
-        except ValueError as e:
-            return 400, {"error": f"invalid JSON: {e}"}
-        source_ip = data.get("source_ip")
-        token = data.get("identity_token")
-        if not isinstance(source_ip, str) or not isinstance(token, str):
-            return 400, {"error": "source_ip and identity_token (strings) required"}
-        rec = orch.attribute(source_ip, token)
-        if rec is None:
-            return 403, {"error": "unattributed"}
-        return 200, {"bottle_id": rec.bottle_id}
-
-    if method == "POST" and route == "/resolve":
-        # The per-request lookup the multi-tenant sidecar makes: returns the
-        # bottle's policy. identity_token is OPTIONAL — absent means resolve
-        # by source IP alone (network-layer attribution).
-        try:
-            data = _parse_json_object(body)
-        except ValueError as e:
-            return 400, {"error": f"invalid JSON: {e}"}
-        source_ip = data.get("source_ip")
-        token = data.get("identity_token")
-        if not isinstance(source_ip, str) or not source_ip:
-            return 400, {"error": "source_ip (string) is required"}
-        rec = orch.resolve(source_ip, token if isinstance(token, str) else "")
-        if rec is None:
-            return 403, {"error": "unattributed"}
-        return 200, {"bottle_id": rec.bottle_id, "policy": rec.policy}
-
-    return 404, {"error": "not found"}
-
-
-class Handler(http.server.BaseHTTPRequestHandler):
-    """Thin stdlib adapter: read the body, call `dispatch`, write JSON."""
-
-    # Quiet by default (the orchestrator has its own logging); opt back into
-    # stdlib access logging with BOT_BOTTLE_ORCHESTRATOR_DEBUG.
-    def log_message(self, format: str, *args: typing.Any) -> None:  # noqa: A002
-        if os.environ.get("BOT_BOTTLE_ORCHESTRATOR_DEBUG"):
-            super().log_message(format, *args)
-
-    def _serve(self, method: str) -> None:
-        """Read the request body, dispatch it, and write the JSON reply."""
-        server = self.server
-        assert isinstance(server, ControlPlaneServer)
-        length = int(self.headers.get("Content-Length") or 0)
-        body = self.rfile.read(length) if length > 0 else b""
-        status, payload = dispatch(server.orchestrator, method, self.path, body)
-        data = json.dumps(payload).encode()
-        self.send_response(status)
-        self.send_header("Content-Type", "application/json")
-        self.send_header("Content-Length", str(len(data)))
-        self.end_headers()
-        self.wfile.write(data)
-
-    def do_GET(self) -> None:
-        self._serve("GET")
-
-    def do_POST(self) -> None:
-        self._serve("POST")
-
-    def do_PUT(self) -> None:
-        self._serve("PUT")
-
-    def do_DELETE(self) -> None:
-        self._serve("DELETE")
-
-
-class ControlPlaneServer(socketserver.ThreadingMixIn, http.server.HTTPServer):
-    """Threading HTTP server that carries the orchestrator for its handlers."""
-
-    daemon_threads = True
-    allow_reuse_address = True
-
-    def __init__(self, address: tuple[str, int], orchestrator: Orchestrator) -> None:
-        self.orchestrator = orchestrator
-        super().__init__(address, Handler)
-
-
-def make_server(
-    orchestrator: Orchestrator, host: str = "127.0.0.1", port: int = 0
-) -> ControlPlaneServer:
-    """Build (but do not start) a control-plane server. `port=0` binds an
-    ephemeral port — read `server.server_address` for the actual one."""
-    return ControlPlaneServer((host, port), orchestrator)
-
-
-__all__ = ["dispatch", "Handler", "ControlPlaneServer", "make_server", "Json"]

bot_bottle/orchestrator/docker_broker.py

@@ -1,83 +0,0 @@
-"""Docker launch broker (PRD 0070) — the first *real* LaunchBroker.
-
-On a verified launch request it starts a Docker container; on teardown it
-removes it. This proves the orchestrator -> backend seam on the cheapest
-backend (the sidecar bundle is already containers). Only the request's
-static ids/flags reach `docker`, so nothing free-form crosses the boundary.
-
-Slice 3 launches a single container from the request's `image_ref`, named
-after the bottle id and labelled for cleanup. Wiring the full agent +
-sidecar bundle (networks, mounts, the consolidated sidecar) is a later
-slice — this is the seam, not the finished launcher.
-"""
-
-from __future__ import annotations
-
-import subprocess
-
-from ..docker_cmd import run_docker
-from .broker import LaunchBroker, LaunchRequest
-
-CONTAINER_PREFIX = "bot-bottle-orch-"
-BOTTLE_ID_LABEL = "bot-bottle-bottle-id"
-
-
-class DockerBrokerError(Exception):
-    """A brokered docker launch/teardown failed (non-zero `docker` exit)."""
-
-
-def container_name(bottle_id: str) -> str:
-    """Deterministic container name for a bottle."""
-    return f"{CONTAINER_PREFIX}{bottle_id}"
-
-
-def run_argv(req: LaunchRequest) -> list[str]:
-    """`docker run` argv for a launch request — built only from its static
-    fields, so it can't be coerced into an arbitrary command."""
-    return [
-        "docker", "run", "--detach",
-        "--name", container_name(req.bottle_id),
-        "--label", f"{BOTTLE_ID_LABEL}={req.bottle_id}",
-        req.image_ref,
-    ]
-
-
-def rm_argv(req: LaunchRequest) -> list[str]:
-    """`docker rm --force` argv to tear a bottle's container down."""
-    return ["docker", "rm", "--force", container_name(req.bottle_id)]
-
-
-class DockerBroker(LaunchBroker):
-    """A `LaunchBroker` that runs / removes a Docker container per bottle.
-    Provenance + schema verification are inherited from `LaunchBroker`."""
-
-    def _docker(self, argv: list[str]) -> subprocess.CompletedProcess[str]:
-        return run_docker(argv)
-
-    def _launch(self, req: LaunchRequest) -> None:
-        if not req.image_ref:
-            raise DockerBrokerError(f"launch request for {req.bottle_id} has no image_ref")
-        proc = self._docker(run_argv(req))
-        if proc.returncode != 0:
-            raise DockerBrokerError(
-                f"docker run failed for {req.bottle_id}: {proc.stderr.strip()}"
-            )
-
-    def _teardown(self, req: LaunchRequest) -> None:
-        proc = self._docker(rm_argv(req))
-        # Idempotent: an already-absent container is a successful teardown.
-        if proc.returncode != 0 and "No such container" not in proc.stderr:
-            raise DockerBrokerError(
-                f"docker rm failed for {req.bottle_id}: {proc.stderr.strip()}"
-            )
-
-
-__all__ = [
-    "DockerBroker",
-    "DockerBrokerError",
-    "container_name",
-    "run_argv",
-    "rm_argv",
-    "CONTAINER_PREFIX",
-    "BOTTLE_ID_LABEL",
-]

bot_bottle/orchestrator/registry.py

@@ -1,252 +0,0 @@
-"""Orchestrator bottle registry — the per-host runtime-state store (PRD 0070).
-
-SQLite-backed registry mapping each live bottle to its source IP and
-per-bottle identity token, plus the **fail-closed attribution** the data
-plane relies on: a request is attributed to a bottle only when its source
-IP *and* its identity token both match a single active record.
-
-The registry co-tenants the shared host `bot-bottle.db` (the `DbStore`
-framework namespaces each store by `schema_key`), so all bot-bottle
-runtime state lives in one queryable file — one place to back up, inspect,
-and integrate a console against.
-
-This is the "runtime state" tier of PRD 0070 (leases / approvals /
-registry) — deliberately NOT config (which stays declarative under
-`~/.bot-bottle/`) and NOT the build-time constants (a flat file). It is the
-source of truth the orchestrator sweeps on restart to re-adopt running
-bottles, so it lives in a durable store rather than process memory.
-
-Attribution combines two independent signals, and needs both:
-
-  * source IP  — the network-layer invariant (on Firecracker the `/31` TAP
-    + nft make it unspoofable by construction; weaker on other backends).
-  * identity token — an application-layer per-bottle secret, defence in
-    depth that doesn't lean on network anti-spoof. A bottle can only ever
-    prove it is *itself* (it can't learn another bottle's token), so a
-    hostile agent gains nothing by presenting it.
-"""
-
-from __future__ import annotations
-
-import hmac
-import secrets
-import sqlite3
-import time
-from dataclasses import dataclass
-from pathlib import Path
-
-from ..db_store import DbStore
-from ..migrations import TableMigrations
-from ..paths import host_db_path
-
-# 256 bits of urandom, URL-safe — unguessable per-bottle identity token.
-IDENTITY_TOKEN_BYTES = 32
-
-
-def new_identity_token() -> str:
-    """A fresh per-bottle identity token (PRD 0070 attribution defence)."""
-    return secrets.token_urlsafe(IDENTITY_TOKEN_BYTES)
-
-
-def default_db_path() -> Path:
-    """The shared host state DB (`bot-bottle.db`) — all bot-bottle runtime
-    state in one file, co-tenanted via schema_key. Host-resident so it
-    survives orchestrator restarts (re-adoption sweeps it)."""
-    return host_db_path()
-
-
-@dataclass(frozen=True)
-class BottleRecord:
-    """One live bottle in the registry."""
-
-    bottle_id: str
-    source_ip: str
-    identity_token: str
-    state: str = "active"
-    created_at: float = 0.0
-    # Opaque JSON blob for forward-compat (pool slot, ...) — the registry
-    # doesn't interpret it, so new fields need no migration.
-    metadata: str = ""
-    # The bottle's sidecar policy (opaque JSON — egress allowlist / routes /
-    # git config). The registry stores and serves it verbatim, keyed by
-    # source IP; the multi-tenant sidecar interprets it.
-    policy: str = ""
-
-    def redacted(self) -> dict[str, object]:
-        """Public view for listing — never exposes the identity token."""
-        return {
-            "bottle_id": self.bottle_id,
-            "source_ip": self.source_ip,
-            "state": self.state,
-            "created_at": self.created_at,
-            "metadata": self.metadata,
-            "policy": self.policy,
-        }
-
-
-_MIGRATIONS = TableMigrations(
-    "orchestrator_registry",
-    [
-        # v1 — the live bottle registry.
-        """
-        CREATE TABLE IF NOT EXISTS orchestrator_bottles (
-            bottle_id      TEXT PRIMARY KEY,
-            source_ip      TEXT NOT NULL,
-            identity_token TEXT NOT NULL,
-            state          TEXT NOT NULL DEFAULT 'active',
-            created_at     REAL NOT NULL,
-            metadata       TEXT NOT NULL DEFAULT ''
-        )
-        """,
-        # source_ip is the data-plane attribution key — index it, and make
-        # the "one active bottle per source IP" check cheap.
-        "CREATE INDEX IF NOT EXISTS idx_orchestrator_bottles_source_ip "
-        "ON orchestrator_bottles (source_ip)",
-        # v3 — per-bottle policy (opaque JSON the sidecar interprets): the
-        # egress allowlist / routes / git config selected by source IP. The
-        # multi-tenant sidecar resolves it per request via `attribute`.
-        "ALTER TABLE orchestrator_bottles ADD COLUMN policy TEXT NOT NULL DEFAULT ''",
-    ],
-)
-
-
-def _row_to_record(row: sqlite3.Row) -> BottleRecord:
-    """Build a BottleRecord from a registry row."""
-    return BottleRecord(
-        bottle_id=row["bottle_id"],
-        source_ip=row["source_ip"],
-        identity_token=row["identity_token"],
-        state=row["state"],
-        created_at=row["created_at"],
-        metadata=row["metadata"],
-        policy=row["policy"],
-    )
-
-
-class RegistryStore(DbStore):
-    """SQLite-backed registry of live bottles + fail-closed attribution."""
-
-    def __init__(self, db_path: Path | None = None) -> None:
-        super().__init__(db_path or default_db_path(), _MIGRATIONS)
-
-    def _connect(self) -> sqlite3.Connection:
-        """Open a connection with a busy timeout for the shared DB."""
-        conn = super()._connect()
-        # The registry co-tenants the shared bot-bottle.db, so a busy_timeout
-        # rides out brief lock contention with the other stores. WAL for the
-        # shared DB is a deliberate future change (it affects supervise/audit
-        # and is finicky over guest shares) — not flipped here.
-        conn.execute("PRAGMA busy_timeout=5000")
-        return conn
-
-    def register(
-        self,
-        source_ip: str,
-        *,
-        bottle_id: str | None = None,
-        identity_token: str | None = None,
-        metadata: str = "",
-        policy: str = "",
-    ) -> BottleRecord:
-        """Register (or replace) a bottle. Mints a bottle_id / identity token
-        when not supplied. Live — this is the control-plane reload path."""
-        rec = BottleRecord(
-            bottle_id=bottle_id or secrets.token_hex(8),
-            source_ip=source_ip,
-            identity_token=identity_token or new_identity_token(),
-            state="active",
-            created_at=time.time(),
-            metadata=metadata,
-            policy=policy,
-        )
-        with self._connect() as conn:
-            conn.execute(
-                "INSERT OR REPLACE INTO orchestrator_bottles "
-                "(bottle_id, source_ip, identity_token, state, created_at, metadata, policy) "
-                "VALUES (?, ?, ?, ?, ?, ?, ?)",
-                (
-                    rec.bottle_id,
-                    rec.source_ip,
-                    rec.identity_token,
-                    rec.state,
-                    rec.created_at,
-                    rec.metadata,
-                    rec.policy,
-                ),
-            )
-        self._chmod()
-        return rec
-
-    def set_policy(self, bottle_id: str, policy: str) -> bool:
-        """Update a bottle's policy in place (live reload). Returns True if
-        the bottle exists."""
-        with self._connect() as conn:
-            cur = conn.execute(
-                "UPDATE orchestrator_bottles SET policy = ? WHERE bottle_id = ?",
-                (policy, bottle_id),
-            )
-        self._chmod()
-        return cur.rowcount > 0
-
-    def deregister(self, bottle_id: str) -> bool:
-        """Remove a bottle. Returns True if a row was deleted."""
-        with self._connect() as conn:
-            cur = conn.execute(
-                "DELETE FROM orchestrator_bottles WHERE bottle_id = ?", (bottle_id,)
-            )
-            return cur.rowcount > 0
-
-    def get(self, bottle_id: str) -> BottleRecord | None:
-        """Return the bottle by id, or None if absent."""
-        with self._connect() as conn:
-            row = conn.execute(
-                "SELECT * FROM orchestrator_bottles WHERE bottle_id = ?", (bottle_id,)
-            ).fetchone()
-        return _row_to_record(row) if row else None
-
-    def all(self) -> list[BottleRecord]:
-        """Every registered bottle, oldest first."""
-        with self._connect() as conn:
-            rows = conn.execute(
-                "SELECT * FROM orchestrator_bottles ORDER BY created_at"
-            ).fetchall()
-        return [_row_to_record(r) for r in rows]
-
-    def by_source_ip(self, source_ip: str) -> BottleRecord | None:
-        """Network-layer attribution: the single active bottle at this source
-        IP, or None if unknown or ambiguous (more than one — a
-        misconfiguration). Safe as the *sole* attributor only where the
-        source IP is unspoofable (Firecracker `/31` + nft) and the control
-        plane is reachable only by the trusted sidecar; pair with the
-        identity token (`attribute`) elsewhere."""
-        with self._connect() as conn:
-            rows = conn.execute(
-                "SELECT * FROM orchestrator_bottles "
-                "WHERE source_ip = ? AND state = 'active'",
-                (source_ip,),
-            ).fetchall()
-        if len(rows) != 1:
-            return None
-        return _row_to_record(rows[0])
-
-    def attribute(self, source_ip: str, identity_token: str) -> BottleRecord | None:
-        """Fail-closed attribution: `by_source_ip` AND a matching identity
-        token (constant-time). Either signal alone is insufficient here — an
-        unknown/ambiguous IP, an empty token, or a token mismatch all deny."""
-        if not identity_token:
-            return None
-        rec = self.by_source_ip(source_ip)
-        if rec is None:
-            return None
-        if not hmac.compare_digest(rec.identity_token, identity_token):
-            return None
-        return rec
-
-
-__all__ = [
-    "BottleRecord",
-    "RegistryStore",
-    "new_identity_token",
-    "default_db_path",
-    "IDENTITY_TOKEN_BYTES",
-]

bot_bottle/orchestrator/service.py

@@ -1,121 +0,0 @@
-"""The per-host orchestrator core (PRD 0070).
-
-`Orchestrator` is the single backend-neutral object the control plane talks
-to: it owns the registry (runtime state) and brokers agent launches. It
-never branches on backend — the `LaunchBroker` abstracts the backend-native
-launch, so this same object drives docker / firecracker / apple once a real
-broker is wired in.
-
-Launch lifecycle:
-
-  * `launch_bottle` mints the bottle (registry: source IP + identity
-    token), sends a *signed, structured* launch request through the broker,
-    and returns the record. If the broker rejects/fails, the registry entry
-    is rolled back so a failed launch leaves no orphan.
-  * `teardown_bottle` sends a signed teardown request, then deregisters.
-"""
-
-from __future__ import annotations
-
-from .broker import LaunchBroker, LaunchRequest, sign_request
-from .registry import BottleRecord, RegistryStore
-from .sidecar import Sidecar
-
-
-class Orchestrator:
-    """Owns the registry + brokers launches, and manages the single
-    consolidated per-host sidecar. Backend-neutral (broker and sidecar
-    abstract the backend-native pieces)."""
-
-    def __init__(
-        self,
-        registry: RegistryStore,
-        broker: LaunchBroker,
-        sign_secret: bytes,
-        sidecar: Sidecar | None = None,
-    ) -> None:
-        self.registry = registry
-        self._broker = broker
-        self._secret = sign_secret
-        self._sidecar = sidecar
-
-    def launch_bottle(
-        self,
-        source_ip: str,
-        *,
-        image_ref: str = "",
-        slot: int | None = None,
-        metadata: str = "",
-        policy: str = "",
-    ) -> BottleRecord:
-        """Register a bottle (with its sidecar policy) and broker its launch.
-        Rolls the registry entry back if the launch doesn't take, so a
-        failure leaves no orphan."""
-        rec = self.registry.register(source_ip, metadata=metadata, policy=policy)
-        req = LaunchRequest(
-            op="launch",
-            bottle_id=rec.bottle_id,
-            source_ip=source_ip,
-            image_ref=image_ref,
-            slot=slot,
-        )
-        launched = False
-        try:
-            self._broker.submit(sign_request(req, self._secret))
-            launched = True
-        finally:
-            if not launched:
-                self.registry.deregister(rec.bottle_id)
-        return rec
-
-    def teardown_bottle(self, bottle_id: str) -> bool:
-        """Broker teardown then deregister. False if the bottle is unknown."""
-        rec = self.registry.get(bottle_id)
-        if rec is None:
-            return False
-        req = LaunchRequest(op="teardown", bottle_id=bottle_id, source_ip=rec.source_ip)
-        self._broker.submit(sign_request(req, self._secret))
-        self.registry.deregister(bottle_id)
-        return True
-
-    def attribute(self, source_ip: str, identity_token: str) -> BottleRecord | None:
-        """Fail-closed attribution (delegates to the registry)."""
-        return self.registry.attribute(source_ip, identity_token)
-
-    def resolve(self, source_ip: str, identity_token: str = "") -> BottleRecord | None:
-        """Resolve the bottle behind a request — the source-IP-keyed lookup
-        the multi-tenant sidecar makes per request; the returned record
-        carries its `policy`. With a token, full attribution (source IP +
-        token); without, network-layer attribution by source IP alone
-        (valid where the IP is unspoofable and the control plane is
-        sidecar-only)."""
-        if identity_token:
-            return self.registry.attribute(source_ip, identity_token)
-        return self.registry.by_source_ip(source_ip)
-
-    def set_policy(self, bottle_id: str, policy: str) -> bool:
-        """Update a bottle's sidecar policy in place (live reload). False if
-        the bottle is unknown."""
-        return self.registry.set_policy(bottle_id, policy)
-
-    # --- consolidated sidecar ----------------------------------------------
-
-    def ensure_sidecar(self) -> None:
-        """Ensure the single per-host sidecar is built and up (idempotent).
-        No-op when no sidecar is configured."""
-        if self._sidecar is not None:
-            self._sidecar.ensure_built()
-            self._sidecar.ensure_running()
-
-    def sidecar_status(self) -> dict[str, object]:
-        """Report the shared sidecar for the control plane / console."""
-        if self._sidecar is None:
-            return {"configured": False}
-        return {
-            "configured": True,
-            "name": self._sidecar.name,
-            "running": self._sidecar.is_running(),
-        }
-
-
-__all__ = ["Orchestrator"]

bot_bottle/orchestrator/sidecar.py

@@ -1,139 +0,0 @@
-"""The consolidated per-host sidecar (PRD 0070).
-
-The core consolidation win: **one** persistent sidecar per host, shared by
-every bottle, instead of a sidecar bundle per bottle. It's safe to share
-because the attribution invariant (source IP + identity token, see
-`registry`) lets the sidecar attribute each request to the right bottle —
-so per-bottle policy lives in one long-lived process keyed on who's calling.
-
-`Sidecar` is the backend-neutral lifecycle contract (mirrors `LaunchBroker`):
-ensure the single instance is up, report it, tear it down. `DockerSidecar`
-is the docker implementation; a firecracker sidecar VM slots in later.
-
-The defining behaviour is **idempotent singleton**: `ensure_running` starts
-the instance if absent and is a no-op if it's already up, so N bottle
-launches never spawn N sidecars.
-"""
-
-from __future__ import annotations
-
-import abc
-import os
-from pathlib import Path
-
-from ..docker_cmd import run_docker
-
-SIDECAR_NAME = "bot-bottle-orch-sidecar"
-SIDECAR_LABEL = "bot-bottle-orch-sidecar=1"
-
-# The real sidecar-bundle image + its Dockerfile. Kept as a local constant
-# rather than imported from backend.docker.sidecar_bundle, which would drag
-# the whole backend layer into the lean orchestrator (see #359); unify when
-# that lands. Env override matches the backend's BOT_BOTTLE_SIDECAR_IMAGE.
-SIDECAR_BUNDLE_IMAGE = os.environ.get("BOT_BOTTLE_SIDECAR_IMAGE", "bot-bottle-sidecars:latest")
-SIDECAR_DOCKERFILE = "Dockerfile.sidecars"
-_REPO_ROOT = Path(__file__).resolve().parents[2]
-
-
-class SidecarError(Exception):
-    """The shared sidecar failed to build/start/stop (non-zero `docker` exit)."""
-
-
-class Sidecar(abc.ABC):
-    """Lifecycle of the single per-host sidecar. Backend-neutral."""
-
-    name: str
-
-    def ensure_built(self) -> None:
-        """Ensure the sidecar's image / rootfs exists, building it if needed.
-        Default: nothing to build (e.g. a stub or a pre-pulled image)."""
-        return
-
-    @abc.abstractmethod
-    def ensure_running(self) -> None:
-        """Start the sidecar if it isn't already up. Idempotent: a no-op
-        when it's already running (that's the whole point — one per host).
-        Assumes the image exists — call `ensure_built()` first."""
-
-    @abc.abstractmethod
-    def is_running(self) -> bool:
-        """True iff the sidecar instance is currently up."""
-
-    @abc.abstractmethod
-    def stop(self) -> None:
-        """Remove the sidecar. Idempotent — absent is success."""
-
-
-class DockerSidecar(Sidecar):
-    """The consolidated sidecar as a single, fixed-name Docker container.
-
-    `image_ref` defaults to the real sidecar-bundle image; `ensure_built`
-    builds it from `Dockerfile.sidecars` when it's missing. (Note: slice 5
-    builds + launches the bundle container; wiring its per-bottle,
-    source-IP-keyed config is a later slice — see PRD 0070.)"""
-
-    def __init__(
-        self,
-        image_ref: str = SIDECAR_BUNDLE_IMAGE,
-        *,
-        name: str = SIDECAR_NAME,
-        build_context: Path | None = None,
-        dockerfile: str | None = SIDECAR_DOCKERFILE,
-    ) -> None:
-        self.image_ref = image_ref
-        self.name = name
-        self._build_context = build_context or _REPO_ROOT
-        self._dockerfile = dockerfile
-
-    def image_exists(self) -> bool:
-        return run_docker(["docker", "image", "inspect", self.image_ref]).returncode == 0
-
-    def ensure_built(self) -> None:
-        """Build the bundle image from its Dockerfile when it's missing.
-        No-op when the image is already present, or when no dockerfile is
-        configured (e.g. a pre-pulled image)."""
-        if self._dockerfile is None or self.image_exists():
-            return
-        proc = run_docker([
-            "docker", "build",
-            "-t", self.image_ref,
-            "-f", str(self._build_context / self._dockerfile),
-            str(self._build_context),
-        ])
-        if proc.returncode != 0:
-            raise SidecarError(f"sidecar image build failed: {proc.stderr.strip()}")
-
-    def is_running(self) -> bool:
-        proc = run_docker([
-            "docker", "ps",
-            "--filter", f"name=^{self.name}$",
-            "--filter", "status=running",
-            "--format", "{{.Names}}",
-        ])
-        return self.name in proc.stdout.split()
-
-    def ensure_running(self) -> None:
-        if self.is_running():
-            return
-        # Clear any stale (stopped) container holding the fixed name, then
-        # start fresh. `rm --force` on an absent name is a tolerated no-op.
-        run_docker(["docker", "rm", "--force", self.name])
-        proc = run_docker([
-            "docker", "run", "--detach",
-            "--name", self.name,
-            "--label", SIDECAR_LABEL,
-            self.image_ref,
-        ])
-        if proc.returncode != 0:
-            raise SidecarError(f"sidecar failed to start: {proc.stderr.strip()}")
-
-    def stop(self) -> None:
-        proc = run_docker(["docker", "rm", "--force", self.name])
-        if proc.returncode != 0 and "No such container" not in proc.stderr:
-            raise SidecarError(f"sidecar failed to stop: {proc.stderr.strip()}")
-
-
-__all__ = [
-    "Sidecar", "DockerSidecar", "SidecarError",
-    "SIDECAR_NAME", "SIDECAR_LABEL", "SIDECAR_BUNDLE_IMAGE",
-]

bot_bottle/paths.py

@@ -1,43 +0,0 @@
-"""Foundational filesystem paths for bot-bottle.
-
-`bot_bottle_root()` is the app data root — state, queue, audit logs,
-git-gate keys, and the shared DB all live under it. It defaults to
-`~/.bot-bottle` and is overridable with the **`BOT_BOTTLE_ROOT`** env var.
-
-The env override is the single knob for redirecting the root: the test
-suite points it at a throwaway dir instead of monkey-patching the function
-(every module and every flat/package copy reads the same env var, so one
-override covers them all), and operators can relocate the root if needed.
-
-This module has no bot-bottle imports, so it is safe to import from any
-layer (and to COPY flat into the sidecar bundle).
-"""
-
-from __future__ import annotations
-
-import os
-from pathlib import Path
-
-# The single shared host state DB. All bot-bottle SQLite stores (supervise
-# queue, audit, the orchestrator registry) co-tenant this one file — the
-# TableMigrations schema_key namespaces each store's tables.
-HOST_DB_FILENAME = "bot-bottle.db"
-
-
-def bot_bottle_root() -> Path:
-    """The app data root — `$BOT_BOTTLE_ROOT` if set, else `~/.bot-bottle`."""
-    override = os.environ.get("BOT_BOTTLE_ROOT")
-    return Path(override) if override else Path.home() / ".bot-bottle"
-
-
-def host_db_path() -> Path:
-    """Path to the shared host state DB, `<root>/db/bot-bottle.db`.
-
-    Kept in its own `db/` subdirectory (not directly under the root) so a
-    backend that can only bind-mount *directories* can share this one file
-    with a sidecar without exposing the root's other contents (git-gate
-    keys, per-bottle state, ...)."""
-    return bot_bottle_root() / "db" / HOST_DB_FILENAME
-
-
-__all__ = ["HOST_DB_FILENAME", "bot_bottle_root", "host_db_path"]

bot_bottle/policy_resolver.py

@@ -1,76 +0,0 @@
-"""Sidecar-side per-client policy resolver (PRD 0070).
-
-The consolidated sidecar serves every bottle from one process, so for each
-request it must apply the *calling* bottle's policy, selected by the source
-IP the attribution invariant makes unspoofable. This resolves that policy
-from the orchestrator's control plane (`POST /resolve`), keyed on the
-`(source_ip, identity_token)` pair.
-
-**Always fresh — no cache.** The resolver is called rarely enough that a
-round-trip doesn't matter, and correctness matters more than speed: every
-resolve reflects the orchestrator's *current* view, so a revocation, a
-policy change, or a bottle teardown the orchestrator knows about is honored
-immediately rather than lingering for a cache TTL. (If this ever becomes a
-hot path, add caching with orchestrator-driven invalidation — not a blind
-TTL.)
-
-**Fail-closed:** an unattributed client (the orchestrator answers `403`)
-resolves to `None`, and the caller (the egress addon, git-gate) must then
-deny — exactly as an unknown bottle should be treated. Orchestrator
-*errors* (unreachable / unexpected status) raise, so the caller can fail
-closed too rather than silently serving stale or empty policy.
-
-The resolved value is the policy blob the orchestrator stores verbatim; the
-consumer parses it (e.g. the egress addon's `load_config`). This module is
-stdlib-only and free of bot-bottle imports so it can be COPYed flat into
-the sidecar bundle.
-"""
-
-from __future__ import annotations
-
-import json
-import urllib.error
-import urllib.request
-
-DEFAULT_TIMEOUT_SECONDS = 2.0
-
-
-class PolicyResolveError(RuntimeError):
-    """The orchestrator was unreachable or returned an unexpected status —
-    distinct from a clean `403` (unattributed), which returns None."""
-
-
-class PolicyResolver:
-    """Resolves each client's policy from the orchestrator, fresh per call."""
-
-    def __init__(self, base_url: str, *, timeout: float = DEFAULT_TIMEOUT_SECONDS) -> None:
-        self._base = base_url.rstrip("/")
-        self._timeout = timeout
-
-    def resolve(self, source_ip: str, identity_token: str = "") -> str | None:
-        """The calling bottle's policy blob, or None if unattributed. Always
-        fetches from the orchestrator so revocations / changes / teardowns
-        are honored immediately. `identity_token` is optional — omit it to
-        resolve by source IP alone (the network-layer attribution).
-        Raises `PolicyResolveError` if the orchestrator can't be reached."""
-        body = json.dumps(
-            {"source_ip": source_ip, "identity_token": identity_token}
-        ).encode()
-        req = urllib.request.Request(
-            f"{self._base}/resolve", data=body, method="POST",
-            headers={"Content-Type": "application/json"},
-        )
-        try:
-            with urllib.request.urlopen(req, timeout=self._timeout) as resp:
-                payload = json.loads(resp.read())
-        except urllib.error.HTTPError as e:
-            if e.code == 403:
-                return None  # unattributed → fail closed (caller denies)
-            raise PolicyResolveError(f"/resolve returned HTTP {e.code}") from e
-        except (urllib.error.URLError, TimeoutError, OSError, ValueError) as e:
-            raise PolicyResolveError(f"/resolve unreachable or malformed: {e}") from e
-        policy = payload.get("policy") if isinstance(payload, dict) else None
-        return policy if isinstance(policy, str) else ""
-
-
-__all__ = ["PolicyResolver", "PolicyResolveError"]

bot_bottle/queue_store.py

@@ -7,13 +7,11 @@ import sqlite3
 from pathlib import Path
 
 try:
-    from .supervise_types import Proposal, Response
-    from .paths import host_db_path
+    from .supervise_types import Proposal, Response, host_db_path
     from .db_store import DbStore
     from .migrations import TableMigrations
 except ImportError:
-    from supervise_types import Proposal, Response  # type: ignore[import-not-found]  # pylint: disable=import-error,no-name-in-module
-    from paths import host_db_path  # type: ignore[import-not-found]  # pylint: disable=import-error,no-name-in-module
+    from supervise_types import Proposal, Response, host_db_path  # type: ignore[import-not-found]  # pylint: disable=import-error,no-name-in-module
     from db_store import DbStore  # type: ignore[import-not-found]  # pylint: disable=import-error,no-name-in-module
     from migrations import TableMigrations  # type: ignore[import-not-found]  # pylint: disable=import-error,no-name-in-module
 

bot_bottle/sidecar_init.py

@@ -167,8 +167,8 @@ class _Supervisor:
 
     def start_all(self) -> None:
         for spec in self.specs:
-            _log(f"starting {spec.name}")
             self.procs.append((spec, _spawn(spec)))
+            _log(f"starting {spec.name}")
 
     def request_shutdown(self, reason: str) -> None:
         if self.shutdown_at is not None:
@@ -353,8 +353,6 @@ def main(argv: Sequence[str] | None = None) -> int:
         return 0
 
     sup = _Supervisor(specs)
-    sup.start_all()
-
     signal.signal(signal.SIGTERM, lambda *_: sup.request_shutdown("SIGTERM"))  # type: ignore
     signal.signal(signal.SIGINT, lambda *_: sup.request_shutdown("SIGINT"))  # type: ignore
     # SIGHUP reload path: egress_apply.py runs `docker kill
@@ -362,6 +360,7 @@ def main(argv: Sequence[str] | None = None) -> int:
     # delivers SIGHUP to PID 1 (this supervisor); forward it to
     # mitmdump so it reloads its addon.
     signal.signal(signal.SIGHUP, lambda *_: sup.forward_signal(signal.SIGHUP, "egress"))  # type: ignore
+    sup.start_all()
 
     while not sup.tick():
         time.sleep(_POLL_INTERVAL)

bot_bottle/store_manager.py

@@ -23,10 +23,13 @@ class StoreManager:
 
     def __init__(self, db_path: Path | None = None) -> None:
         if db_path is None:
+            # Lazy import to avoid a circular dependency: supervise imports
+            # StoreManager at module level; StoreManager must not import
+            # supervise at module level in return.
             try:
-                from .paths import host_db_path
+                from .supervise import host_db_path
             except ImportError:
-                from paths import host_db_path  # type: ignore[import-not-found]  # pylint: disable=import-error,no-name-in-module
+                from supervise import host_db_path  # type: ignore[import-not-found]  # pylint: disable=import-error,no-name-in-module
             db_path = host_db_path()
         self.db_path = db_path
 

bot_bottle/supervise.py

@@ -41,6 +41,7 @@ try:
     from .supervise_types import (
         ACTION_OPERATOR_EDIT,
         AuditEntry,
+        HOST_DB_FILENAME,
         Proposal,
         Response,
         STATUSES,
@@ -53,11 +54,13 @@ try:
         TOOL_EGRESS_TOKEN_ALLOW,
         TOOL_GITLEAKS_ALLOW,
         TOOL_LIST_EGRESS_ROUTES,
+        bot_bottle_root,
     )
 except ImportError:
     from supervise_types import (  # type: ignore[import-not-found,no-redef]  # pylint: disable=import-error,no-name-in-module
         ACTION_OPERATOR_EDIT,
         AuditEntry,
+        HOST_DB_FILENAME,
         Proposal,
         Response,
         STATUSES,
@@ -70,15 +73,10 @@ except ImportError:
         TOOL_EGRESS_TOKEN_ALLOW,
         TOOL_GITLEAKS_ALLOW,
         TOOL_LIST_EGRESS_ROUTES,
+        bot_bottle_root,
     )
 
 
-try:
-    from .paths import bot_bottle_root
-except ImportError:  # flat imports inside the sidecar bundle
-    from paths import bot_bottle_root  # type: ignore[import-not-found,no-redef]  # pylint: disable=import-error,no-name-in-module
-
-
 SUPERVISE_HOSTNAME = "supervise"
 SUPERVISE_PORT = 9100
 
@@ -87,7 +85,7 @@ SUPERVISE_PORT = 9100
 # tool. The hostname + port match egress's docker network
 # listen port (see backend.docker.egress.EGRESS_PORT). The supervise
 # daemon runs inside the sidecar bundle alongside egress, so loopback
-# is the stable address across docker, firecracker, and Apple
+# is the stable address across docker, smolmachines, and Apple
 # Container backends.
 EGRESS_FORWARD_PROXY = "http://127.0.0.1:9099"
 EGRESS_INTROSPECT_URL = "http://_egress.local/allowlist"
@@ -108,6 +106,16 @@ def audit_dir() -> Path:
     return bot_bottle_root() / "audit"
 
 
+def host_db_path() -> Path:
+    # Calls bot_bottle_root() through this module's globals so that patches
+    # on supervise.bot_bottle_root propagate to callers going through
+    # supervise.host_db_path().
+    #
+    # Kept in its own "db" subdirectory (see supervise_types.host_db_path
+    # for why) — must stay in sync with that copy.
+    return bot_bottle_root() / "db" / HOST_DB_FILENAME
+
+
 def audit_log_path(component: str, slug: str) -> Path:
     return audit_dir() / f"{component}-{slug}.log"
 
@@ -289,6 +297,8 @@ __all__ = [
     "archive_proposal",
     "audit_dir",
     "audit_log_path",
+    "bot_bottle_root",
+    "host_db_path",
     "list_pending_proposals",
     "list_all_pending_proposals",
     "read_audit_entries",

bot_bottle/supervise_types.py

@@ -1,19 +1,26 @@
-"""Shared types for supervise stores (PRD 0013).
+"""Shared types and path helpers for supervise stores (PRD 0013).
 
 Extracted from supervise.py so queue_store and audit_store can import
-Proposal, Response, and AuditEntry without creating a circular import
-(supervise imports from queue_store/audit_store and vice-versa).
+Proposal, Response, AuditEntry, and host_db_path without creating a
+circular import (supervise imports from queue_store/audit_store and
+vice-versa).
 
-The path helpers (`bot_bottle_root`, `host_db_path`, `HOST_DB_FILENAME`)
-live in `paths` — import them from there.
+Patching bot_bottle_root on this module propagates through host_db_path
+because host_db_path looks up bot_bottle_root via sys.modules[__name__]
+at call time rather than capturing it at import time.
 """
 
 from __future__ import annotations
 
 import dataclasses
+import sys
 import uuid
 from dataclasses import dataclass
 from datetime import datetime, timezone
+from pathlib import Path
+
+
+HOST_DB_FILENAME = "bot-bottle.db"
 
 TOOL_EGRESS_BLOCK = "egress-block"
 TOOL_EGRESS_ALLOW = "egress-allow"
@@ -36,6 +43,23 @@ STATUSES: tuple[str, ...] = (STATUS_APPROVED, STATUS_MODIFIED, STATUS_REJECTED)
 ACTION_OPERATOR_EDIT = "operator-edit"
 
 
+def bot_bottle_root() -> Path:
+    return Path.home() / ".bot-bottle"
+
+
+def host_db_path() -> Path:
+    # Look up bot_bottle_root through this module's live namespace so that
+    # monkey-patches on supervise_types.bot_bottle_root take effect.
+    #
+    # Lives in its own "db" subdirectory, not directly under
+    # bot_bottle_root(), so backends that can only bind-mount
+    # directories (macos_container's `container run --mount`, which
+    # rejects file sources with "is not a directory") can share this
+    # one file with a sidecar without also exposing bot_bottle_root()'s
+    # other contents (git-gate keys, per-bottle state, etc.).
+    return sys.modules[__name__].bot_bottle_root() / "db" / HOST_DB_FILENAME
+
+
 def _require_str(raw: dict[str, object], key: str) -> str:
     value = raw.get(key)
     if not isinstance(value, str):
@@ -147,6 +171,7 @@ class AuditEntry:
 __all__ = [
     "ACTION_OPERATOR_EDIT",
     "AuditEntry",
+    "HOST_DB_FILENAME",
     "Proposal",
     "Response",
     "STATUSES",
@@ -159,4 +184,6 @@ __all__ = [
     "TOOL_EGRESS_TOKEN_ALLOW",
     "TOOL_GITLEAKS_ALLOW",
     "TOOL_LIST_EGRESS_ROUTES",
+    "bot_bottle_root",
+    "host_db_path",
 ]

docs/prds/0023-smolmachines-backend.md

@@ -1,8 +1,6 @@
 # PRD 0023: smolmachines bottle backend
 
-> **Superseded (2026-07-11).** The smolmachines backend was removed — Linux now uses the Firecracker backend, macOS uses macos-container. Kept as a historical record; see the removal commit `c07ebca` and `docs/research/landscape-containerized-claude.md`.
-
-- **Status:** Superseded (2026-07-11) — was Active
+- **Status:** Active
 - **Author:** didericis
 - **Created:** 2026-05-26
 

docs/prds/0032-smolmachines-launch-decomposition.md

@@ -1,8 +1,6 @@
 # PRD 0032: Decompose smolmachines launch and harden bringup sequencing
 
-> **Superseded (2026-07-11).** The smolmachines backend was removed — Linux now uses the Firecracker backend, macOS uses macos-container. Kept as a historical record; see the removal commit `c07ebca` and `docs/research/landscape-containerized-claude.md`.
-
-- **Status:** Superseded (2026-07-11) — was Active
+- **Status:** Active
 - **Author:** didericis-claude
 - **Created:** 2026-06-02
 - **Issue:** #122

docs/prds/0038-smolmachines-env-contract.md

@@ -1,8 +1,6 @@
 # PRD 0038: smolmachines Env Contract and Secret-Safe Injection
 
-> **Superseded (2026-07-11).** The smolmachines backend was removed — Linux now uses the Firecracker backend, macOS uses macos-container. Kept as a historical record; see the removal commit `c07ebca` and `docs/research/landscape-containerized-claude.md`.
-
-- **Status:** Superseded (2026-07-11) — was Active
+- **Status:** Active
 - **Author:** didericis-codex
 - **Created:** 2026-06-02
 - **Issue:** #135

docs/prds/0039-smolmachines-capability-remediation.md

@@ -1,8 +1,6 @@
 # PRD 0039: smolmachines Capability-Block Remediation
 
-> **Superseded (2026-07-11).** The smolmachines backend was removed — Linux now uses the Firecracker backend, macOS uses macos-container. Kept as a historical record; see the removal commit `c07ebca` and `docs/research/landscape-containerized-claude.md`.
-
-- **Status:** Superseded (2026-07-11) — was Active
+- **Status:** Active
 - **Author:** didericis-codex
 - **Created:** 2026-06-02
 - **Issue:** #136

docs/prds/0042-smolmachines-parity-tests.md

@@ -1,8 +1,6 @@
 # PRD 0042: smolmachines Cross-Backend Parity Tests
 
-> **Superseded (2026-07-11).** The smolmachines backend was removed — Linux now uses the Firecracker backend, macOS uses macos-container. Kept as a historical record; see the removal commit `c07ebca` and `docs/research/landscape-containerized-claude.md`.
-
-- **Status:** Superseded (2026-07-11) — was Active
+- **Status:** Active
 - **Author:** didericis-codex
 - **Created:** 2026-06-02
 - **Issue:** #139

docs/prds/0057-smolmachines-default.md

@@ -1,8 +1,6 @@
 # PRD 0057: Promote smolmachines to default backend; convert Docker to example-only
 
-> **Superseded (2026-07-11).** The smolmachines backend was removed — Linux now uses the Firecracker backend, macOS uses macos-container. Kept as a historical record; see the removal commit `c07ebca` and `docs/research/landscape-containerized-claude.md`.
-
-- **Status:** Superseded (2026-07-11) — was Active
+- **Status:** Active
 - **Author:** didericis
 - **Created:** 2026-06-06
 - **Issue:** #206

docs/prds/0068-smolmachines-linux.md

@@ -1,8 +1,6 @@
 # PRD 0068: smolmachines backend on Linux
 
-> **Superseded (2026-07-11).** The smolmachines backend was removed — Linux now uses the Firecracker backend, macOS uses macos-container. Kept as a historical record; see the removal commit `c07ebca` and `docs/research/landscape-containerized-claude.md`.
-
-- **Status:** Superseded (2026-07-11) — was Active
+- **Status:** Active
 - **Author:** Claude
 - **Created:** 2026-06-25
 - **Issue:** #283