refactor(orchestrator): move run_docker to a lean top-level docker_cmd (#352 )

Review feedback: don't bury a parallel docker util in the orchestrator. But reusing backend.docker.util (docker_mod) isn't right either — importing it runs backend/__init__.py, which eagerly loads all three backends (docker + firecracker + macos) plus the manifest/egress/git-gate/supervise framework (~76 modules), so every orchestrator import would drag the whole backend layer in. Compromise: promote the helper to a top-level, framework-free bot_bottle/docker_cmd.py (single stdlib import), a proper shared home the orchestrator's docker components use now and backend.docker.util can adopt later. Verified `import bot_bottle.orchestrator` stays lean (12 modules, no firecracker/macos backends). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01WBMWTEtQdJ4W5UrWuLHCck
feat(orchestrator): slice 4 — consolidated per-host sidecar (#352 )
2026-07-13 16:24:37 -04:00 · 2026-07-13 15:28:29 -04:00 · 2026-07-13 15:05:55 -04:00 · 2026-07-13 15:02:11 -04:00 · 2026-07-13 14:42:35 -04:00 · 2026-07-13 14:30:13 -04:00
50 changed files with 2501 additions and 364 deletions
@@ -66,6 +66,7 @@ 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/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
@@ -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-84%25-brightgreen)](https://coverage.readthedocs.io/)
+[![coverage](https://img.shields.io/badge/coverage-82%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.
@@ -6,11 +6,13 @@ import sqlite3
 from pathlib import Path

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

@@ -26,7 +26,7 @@ from __future__ import annotations
 import shutil
 import subprocess

-from ... import supervise as _supervise
+from ...paths import bot_bottle_root
 from ...log import info, warn
 from . import util as docker_mod
 from .bottle_cleanup_plan import DockerBottleCleanupPlan
@@ -94,7 +94,7 @@ def _list_orphan_state_dirs(
    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 = _supervise.bot_bottle_root() / "state"
+    state_root = bot_bottle_root() / "state"
    if not state_root.is_dir():
        return []
    orphans: list[str] = []
@@ -0,0 +1,17 @@
+# 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
@@ -4,11 +4,13 @@ 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. This module is the single source of truth for the
-pool parameters — the shell script (`scripts/firecracker-netpool.sh`),
-the NixOS module (`nix/firecracker-netpool.nix`), and the backend's
-fail-closed preflight all derive from these constants so they can't
-drift.
+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
@@ -43,18 +45,47 @@ 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 = os.environ.get("BOT_BOTTLE_FC_IFACE_PREFIX", "bbfc")
-NFT_TABLE = "bot_bottle_fc"
+IFACE_PREFIX = _cfg("BOT_BOTTLE_FC_IFACE_PREFIX")
+NFT_TABLE = _cfg("BOT_BOTTLE_FC_NFT_TABLE")


 def pool_size() -> int:
-    return int(os.environ.get("BOT_BOTTLE_FC_POOL_SIZE", "8"))
+    return int(_cfg("BOT_BOTTLE_FC_POOL_SIZE"))


 def ip_base() -> str:
-    return os.environ.get("BOT_BOTTLE_FC_IP_BASE", "10.243.0.0")
+    return _cfg("BOT_BOTTLE_FC_IP_BASE")


 # Sidecar ports the VM reaches at its host-side TAP IP. Kept in sync
@@ -36,7 +36,7 @@ from dataclasses import dataclass
 from pathlib import Path
 from typing import cast

-from . import supervise as _supervise
+from .paths import bot_bottle_root


 # Directory layout: ~/.bot-bottle/state/<identity>/...
@@ -163,7 +163,7 @@ def read_metadata(identity: str) -> BottleMetadata | None:
 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
+    return bot_bottle_root() / _STATE_SUBDIR / identity


 def per_bottle_dockerfile_path(identity: str) -> Path:
@@ -19,7 +19,7 @@ from dataclasses import dataclass
 from datetime import datetime, timezone
 from pathlib import Path

-from .. import supervise as _supervise
+from ..paths import bot_bottle_root
 from ..bottle_state import read_metadata
 from ..backend.docker.egress_apply import (
    EgressApplyError,
@@ -276,7 +276,7 @@ def _write_crash_log(exc: BaseException) -> Path:
    )
    entry = f"=== supervise crash {stamp} ===\n{body}\n"
    try:
-        log_dir = _supervise.bot_bottle_root() / "logs"
+        log_dir = 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:
@@ -0,0 +1,27 @@
+"""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"]
@@ -0,0 +1,64 @@
+"""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",
+]
@@ -0,0 +1,78 @@
+"""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-image", default=None,
+        help="if set, run one consolidated per-host sidecar from this image",
+    )
+    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(args.sidecar_image) if args.sidecar_image else None
+    orchestrator = Orchestrator(registry, broker, secret, sidecar)
+
+    # One persistent per-host sidecar, shared by every bottle (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())
@@ -0,0 +1,176 @@
+"""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",
+]
@@ -0,0 +1,160 @@
+"""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"]}
+    DELETE /bottles/<bottle_id> -> 200 {"torn_down": true} | 404          (teardown)
+    POST   /attribute           -> 200 {"bottle_id"} | 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
+    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")
+        rec = orch.launch_bottle(
+            source_ip,
+            image_ref=image_ref if isinstance(image_ref, str) else "",
+            metadata=metadata if isinstance(metadata, str) else "",
+        )
+        return 201, {"bottle_id": rec.bottle_id, "identity_token": rec.identity_token}
+
+    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}
+
+    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_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"]
@@ -0,0 +1,83 @@
+"""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",
+]
@@ -0,0 +1,219 @@
+"""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 (policy refs, pool slot, ...) —
+    # the registry doesn't interpret it, so new fields need no migration.
+    metadata: 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,
+        }
+
+
+_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)",
+    ],
+)
+
+
+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"],
+    )
+
+
+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 = "",
+    ) -> 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,
+        )
+        with self._connect() as conn:
+            conn.execute(
+                "INSERT OR REPLACE INTO orchestrator_bottles "
+                "(bottle_id, source_ip, identity_token, state, created_at, metadata) "
+                "VALUES (?, ?, ?, ?, ?, ?)",
+                (
+                    rec.bottle_id,
+                    rec.source_ip,
+                    rec.identity_token,
+                    rec.state,
+                    rec.created_at,
+                    rec.metadata,
+                ),
+            )
+        self._chmod()
+        return rec
+
+    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 attribute(self, source_ip: str, identity_token: str) -> BottleRecord | None:
+        """Fail-closed attribution. Returns the bottle only when exactly one
+        active record has this source IP AND its identity token matches
+        (constant-time). Either signal alone is insufficient: an unknown IP,
+        an ambiguous IP (more than one active bottle — a misconfiguration),
+        an empty token, or a token mismatch all deny."""
+        if not identity_token:
+            return None
+        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
+        rec = _row_to_record(rows[0])
+        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",
+]
@@ -0,0 +1,102 @@
+"""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 = "",
+    ) -> BottleRecord:
+        """Register a bottle 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)
+        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)
+
+    # --- consolidated sidecar ----------------------------------------------
+
+    def ensure_sidecar(self) -> None:
+        """Bring the single per-host sidecar up (idempotent). No-op when no
+        sidecar is configured."""
+        if self._sidecar is not None:
+            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"]
@@ -0,0 +1,88 @@
+"""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
+
+from ..docker_cmd import run_docker
+
+SIDECAR_NAME = "bot-bottle-orch-sidecar"
+SIDECAR_LABEL = "bot-bottle-orch-sidecar=1"
+
+
+class SidecarError(Exception):
+    """The shared sidecar failed to start/stop (non-zero `docker` exit)."""
+
+
+class Sidecar(abc.ABC):
+    """Lifecycle of the single per-host sidecar. Backend-neutral."""
+
+    name: str
+
+    @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)."""
+
+    @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."""
+
+    def __init__(self, image_ref: str, *, name: str = SIDECAR_NAME) -> None:
+        self.image_ref = image_ref
+        self.name = name
+
+    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"]
@@ -0,0 +1,43 @@
+"""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"]
@@ -7,11 +7,13 @@ import sqlite3
 from pathlib import Path

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

@@ -23,13 +23,10 @@ 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 .supervise import host_db_path
+                from .paths import host_db_path
            except ImportError:
-                from supervise import host_db_path  # 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
            db_path = host_db_path()
        self.db_path = db_path

@@ -41,7 +41,6 @@ try:
    from .supervise_types import (
        ACTION_OPERATOR_EDIT,
        AuditEntry,
-        HOST_DB_FILENAME,
        Proposal,
        Response,
        STATUSES,
@@ -54,13 +53,11 @@ 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,
@@ -73,10 +70,15 @@ 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

@@ -106,16 +108,6 @@ 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"

@@ -297,8 +289,6 @@ __all__ = [
    "archive_proposal",
    "audit_dir",
    "audit_log_path",
-    "bot_bottle_root",
-    "host_db_path",
    "list_pending_proposals",
    "list_all_pending_proposals",
    "read_audit_entries",
@@ -1,26 +1,19 @@
-"""Shared types and path helpers for supervise stores (PRD 0013).
+"""Shared types for supervise stores (PRD 0013).

 Extracted from supervise.py so queue_store and audit_store can import
-Proposal, Response, AuditEntry, and host_db_path without creating a
-circular import (supervise imports from queue_store/audit_store and
-vice-versa).
+Proposal, Response, and AuditEntry without creating a circular import
+(supervise imports from queue_store/audit_store and vice-versa).

-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.
+The path helpers (`bot_bottle_root`, `host_db_path`, `HOST_DB_FILENAME`)
+live in `paths` — import them from there.
 """

 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"
@@ -43,23 +36,6 @@ 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):
@@ -171,7 +147,6 @@ class AuditEntry:
 __all__ = [
    "ACTION_OPERATOR_EDIT",
    "AuditEntry",
-    "HOST_DB_FILENAME",
    "Proposal",
    "Response",
    "STATUSES",
@@ -184,6 +159,4 @@ __all__ = [
    "TOOL_EGRESS_TOKEN_ALLOW",
    "TOOL_GITLEAKS_ALLOW",
    "TOOL_LIST_EGRESS_ROUTES",
-    "bot_bottle_root",
-    "host_db_path",
 ]
@@ -1,10 +1,16 @@
 # PRD 0069: Firecracker-native, Docker-free backend

- **Status:** Draft
+- **Status:** Draft (partially superseded)
 - **Author:** Claude
 - **Created:** 2026-07-12
 - **Issue:** #348

+> **Superseded in part by [PRD 0070](0070-per-host-orchestrator.md) (#351):**
+> the sidecar-consolidation framing here (Stage 1, per-host sidecar; Stage 4,
+> sidecar-as-VM) is taken over by 0070's per-host orchestrator. This PRD still
+> owns the docker-free **image-building** work — Stage 2 (nix-built fixed
+> images, a dependency of 0070) and Stage 3 (in-VM Dockerfile builder).
+
 ## Summary

 Make the Firecracker backend depend on **firecracker + KVM only**, removing
@@ -0,0 +1,401 @@
+# PRD 0070: Per-host orchestrator service
+
+- **Status:** Draft
+- **Author:** Claude
+- **Created:** 2026-07-12
+- **Issue:** #351
+- **Supersedes:** the Stage-1 / Stage-4 sidecar-consolidation framing of
+  PRD 0069 (#348). Depends on 0069's nix-built fixed images (Stage 2) for
+  bootstrapping; 0069 still owns the docker-free image-building work.
+
+## Summary
+
+Replace the **per-bottle sidecar bundle** with a single **persistent,
+per-host orchestrator**: one long-lived service that runs the sidecar
+functions (egress / git-gate / supervise), coordinates with the console,
+and brokers agent launches and teardown. It is **virtualized from the
+start** using each backend's native isolation primitive — a Firecracker
+microVM on the Firecracker backend, an Apple container on macOS, a Docker
+container on the legacy backend — and is fronted by a single
+**backend-agnostic contract**. Per-backend variation lives on
+`BottleBackend`, not in the orchestrator.
+
+## Motivation
+
+Today each bottle spins up its own sidecar bundle (egress mitmproxy +
+git-gate + supervise). That costs:
+
+- **Resources.** N bottles → N heavy bundles booting and idling.
+- **Operational churn.** Per-launch container/VM lifecycle for the
+  sidecars, a control path baked at launch and torn down at exit.
+- **A blurry contract.** "How a bottle talks to its sidecar" is
+  re-implemented per backend instead of being one agreed interface.
+
+A per-host orchestrator collapses the first two and forces the third to
+be made explicit. It's also the component that will own per-host runtime
+**state** (slot leases, the approval queue, the bottle registry) — today
+that's ad-hoc `fcntl`-locked files.
+
+## Security review (read this first)
+
+Consolidation is a real change to the trust model. The goal is to **not
+significantly weaken** the posture; some properties strengthen, some
+weaken, and the weakened ones must be mitigated by design, not hand-waved.
+
+### What gets stronger
+
+- **Build/host isolation of untrusted inputs** (with 0069 Stage 3): user
+  Dockerfiles build in a disposable VM instead of on the host.
+- **One audited privileged surface.** Today the launcher runs as the full
+  host user and needs the Docker socket (root-equivalent). The orchestrator
+  model replaces that with a **thin launch broker** (below) — a small,
+  structured, auditable privileged core instead of a fat socket.
+- **Attribution is enforced, not assumed.** Making source-IP identity a
+  first-class contract invariant (below) means each backend must *prove*
+  it, rather than the sidecar implicitly trusting network position.
+
+### What gets weaker, and the mitigation
+
+1. **Secret concentration.** Per-bottle sidecars isolate secrets at the
+   process boundary — each holds only its bottle's tokens/keys. A host
+   orchestrator concentrates **every bottle's** egress tokens, git deploy
+   keys, and the console credential in one long-lived process. A single
+   attribution bug leaks bottle A's token into bottle B's request — a class
+   of bug that *cannot exist* per-bottle.
+   - *Mitigation:* lean on the enforced source-IP invariant for
+     attribution; keep the most secret-dense, least-shareable service
+     (**git-gate**, per-repo deploy keys, no natural source-IP scoping)
+     **per-bottle** unless there's a compelling reason; scope each secret
+     to the bottle in the state DB so a lookup can't return the wrong
+     bottle's secret by construction (key every secret access by the
+     verified source identity, never by ambient state).
+
+2. **Shared fate.** Orchestrator down = no new launches, and running
+   agents lose egress / git / supervise. Compromise = the whole host's
+   fleet, plus launch authority, plus the console token.
+   - *Mitigation:* the orchestrator is itself confined (its own VM/container
+     with its own fail-closed egress); make it **restartable without killing
+     running agent VMs** (agents keep running; they briefly lose sidecar
+     connectivity until it's back); persist state to a host volume so a
+     restart re-adopts live bottles rather than losing them.
+
+3. **The launch broker is the new privileged core.** We don't eliminate
+   host privilege — we shrink and relocate it. If the broker accepts
+   arbitrary paths/commands, the orchestrator VM can escape through it.
+   - *Mitigation:* the broker takes **structured requests only** — "launch
+     bottle from *this* content-addressed, nix-built rootfs on TAP slot
+     *k*", never "run this argv". It validates against a fixed image set,
+     not caller-supplied paths. It is small enough to audit line-by-line.
+
+4. **The egress proxy now parses every bottle's traffic in one process.**
+   Higher blast radius for a mitmproxy/TLS-bump bug.
+   - *Mitigation:* this is the argument for virtualizing the orchestrator
+     from the start (Stage B, not a host daemon) — the code that TLS-bumps
+     and parses agent traffic and holds every token runs **inside its own
+     confined VM**, not as a host process. If egress sharing's blast radius
+     feels too high, egress can stay per-bottle while supervise (near-zero
+     secrets) goes host-level first.
+
+### The attribution invariant
+
+Source-IP attribution is what makes a shared orchestrator safe: one
+process serves every bottle and tells them apart by source address. The
+*mechanism* is identical everywhere (read source IP → look up bottle); the
+**guarantee that the address can't be forged is a per-backend
+responsibility** and part of the contract:
+
+> **Invariant:** a packet's source address, as seen by the orchestrator,
+> *provably* identifies the originating bottle.
+
+- **Firecracker** — enforced by the `/31` point-to-point TAP + the
+  `bot_bottle_fc` nft table (strongest; already built).
+- **Docker** — the per-bottle `--internal` network + anti-spoof; weaker,
+  must be made explicit.
+- **Apple** — the host-only network.
+
+If a backend can't honor the invariant, source-IP consolidation is not
+safe there and that backend keeps per-bottle sidecars. The invariant is a
+hard precondition, not an aspiration.
+
+**Defense-in-depth — a per-bottle identity token.** On top of the
+network-layer invariant, inject a per-bottle secret token into every
+request the agent makes to the orchestrator (the agent already egresses
+through the sidecar proxy, so this is cheap to add). It gives an
+**application-layer** proof of identity independent of the network layer:
+
+- On **Firecracker** the `/31` + nft already make source IP unspoofable
+  *by construction*, so the token is belt-and-suspenders there — but cheap
+  insurance against a misconfigured invariant.
+- On **weaker backends** (Docker) it is load-bearing, providing attribution
+  that doesn't lean on network anti-spoof.
+
+Requirements: the token is **per-bottle, unguessable, and
+non-cross-leakable** — a bottle can only ever prove it is *itself* (it
+can't learn another bottle's token, given bottle isolation), so a hostile
+agent gains nothing by presenting it. The orchestrator provisions the
+token at launch and the sidecar requires it to attribute + authorize.
+Note this hardens *attribution*, not *secret exposure*: it's app-layer, so
+a compromised orchestrator still sees every token (that's the
+concentration problem, addressed separately under Secret handling).
+
+### Secret handling — a FUTURE pattern (not v1)
+
+> **Status: future / not required for the initial orchestrator.** The
+> initial cut can inject secrets as today; this section records the
+> direction so v1 doesn't paint itself into a corner. Tracked as its own
+> work in **#355** (generic `SecretProvider`).
+
+The residual weakness after all of the above is **long-lived credential
+concentration** — the data-plane proxies must hold every bottle's upstream
+tokens because the agent must never see them. You can't policy-gate the
+component whose job is to *use* all the secrets, so a full RCE of a proxy
+drains its authorized set regardless. Two moves bound this without
+pretending to prevent it:
+
+1. **Vault as a separate trust domain.** The long-lived *roots* live in a
+   distinct process (ideally its own VM) that the byte-parsing data plane
+   never shares memory with. The proxies request secrets from it; the
+   crown jewels are not in the process an agent-facing parser can pop.
+2. **Derive short-lived, scoped creds where the upstream allows it.** The
+   vault holds the root and mints expiring, narrowly-scoped credentials
+   per bottle-start (or per request) — GitHub App installation tokens,
+   OAuth/STS token exchange, forge deploy tokens. A compromise then leaks
+   short-lived material, not permanent keys. For upstreams stuck on static
+   keys the vault passes the value through (only the at-rest / audit /
+   revocation benefits apply, not lifetime reduction) — this residue is
+   accepted and documented, not solved.
+
+Even a plain per-request fetch (no derivation) still buys **at-rest**
+reduction (process memory holds only in-flight secrets), a **detection /
+rate-limit / revocation chokepoint**, and clean **cross-component
+scoping** (an egress RCE can't request git-gate's creds). It does *not*
+prevent abuse of currently-authorized access during the compromise window.
+
+**Mechanism (see #355):** generalize the existing `DeployKeyProvisioner`
+(PRD 0048) into a user-extensible **`SecretProvider`** droppable into the
+manifest anywhere a raw token value is accepted, discovered from
+`~/.bot-bottle/contrib/<name>/secret_provider.py` exactly as user
+`AgentProvider`s are — because maintaining every forge/cloud/OAuth
+provider in-tree is untenable. The orchestrator's vault mints via these
+providers; but the abstraction is shippable independently and today's
+per-bottle sidecars can use it too.
+
+## Design
+
+### The contract (backend-agnostic)
+
+Three surfaces; only one is per-backend.
+
+1. **Control plane (CLI / console → orchestrator)** — an RPC:
+   `launch_bottle`, `teardown_bottle`, `register_policy`,
+   `deregister_bottle`, `supervise_queue`. Fully backend-agnostic. Both the
+   local `cli.py` and the remote console funnel through it, so policy is
+   uniform and `cli.py` becomes a thin client rather than a parallel
+   launcher. **Transport: HTTP** — the most universal/reliable choice on
+   every host (no vsock/unix-socket portability caveats); a local unix
+   socket is a fine optimization, but HTTP is the wire contract.
+2. **Data plane (agent → orchestrator)** — the egress / git / supervise
+   endpoints. Already agnostic today (agents dial `http://sidecar:9099`);
+   only the *address* and *how packets get there* are per-backend.
+3. **Launch / wire (orchestrator → backend)** — the irreducibly
+   backend-specific part; lives on `BottleBackend`.
+
+### One `Orchestrator`, no subclass tree
+
+The orchestrator is a **single concrete class** holding all the
+backend-neutral logic — egress addon, git-gate, supervise, source-IP
+attribution, live-reload control plane, console client. It never branches
+on backend; it *composes* a `BottleBackend`. That composition is what makes
+the contract agnostic: there is nothing backend-specific left in the
+orchestrator to leak.
+
+Rejected alternative: an `Orchestrator` ABC with per-backend
+implementations. The interesting logic (proxies, attribution, control
+plane) is backend-neutral, so three subclasses would triplicate the hard
+part; and a second hierarchy paralleling `BottleBackend` reintroduces the
+same hand-maintained lockstep coupling we just removed from the netpool
+constants (PR #350). Composition over a parallel tree.
+
+### `BottleBackend` absorbs the per-backend variation
+
+A small, cohesive surface — reused for launching agent bottles *and* the
+orchestrator's own unit (the orchestrator is just another native unit):
+
+```
+launch_unit(spec) -> Handle      # agent bottle OR the orchestrator itself
+                                 # (fc microVM / apple ctr / docker ctr)
+wire(unit, endpoint) -> None     # DNAT+forward (fc) | attach shared net (docker/apple)
+endpoint_of(unit) -> Endpoint    # address resolution
+health(unit) -> Status
+```
+
+Plus the **launch broker** — the answer to "a VM/container can't spawn its
+own host-network siblings." The orchestrator can't directly open host
+`/dev/kvm` + a host TAP fd (Firecracker), and a container can't spawn
+siblings without a root-equivalent socket (Docker). So every backend
+exposes a broker the orchestrator calls to launch an agent:
+
+- **Firecracker** — a thin, structured host shim (see security #3). This
+  replaces today's implicit "launcher runs as host user."
+- **Docker** — the socket today (fat, root-equivalent — the thing 0069's
+  Stage 3 removes); a narrower broker later.
+- **Apple** — the `container` CLI/daemon.
+
+**Broker request schema:** human-readable JSON of **static flags + ids
+only** (never free-form paths/argv — that's what keeps it un-coercible
+into arbitrary launches), wrapped as a **signed JWT** so the broker
+verifies *provenance*: the request came from the real orchestrator, not a
+forged one from a compromised co-located component. The orchestrator signs;
+the broker verifies with the orchestrator's public key (provisioned at
+broker install). This is the concrete form of security #3's "structured
+requests only." Same JSON-with-ids + JWT shape for all
+orchestrator↔broker/sidecar communication; cases that don't fit get
+handled as they arise, with this as the default.
+
+If `BottleBackend` bloats, the pressure valve is composition one level
+down: vend a `backend.network()` / `Wiring` collaborator rather than
+piling methods on — the same discipline, recursed.
+
+### State: one SQLite DB, owned by the orchestrator
+
+The orchestrator is the natural owner of per-host **runtime state**:
+
+- pool **slot leases** (which bottle holds slot *i*) — replaces today's
+  `fcntl`-locked files with SQLite transactions;
+- the **supervise approval queue** + remembered approvals;
+- the **live bottle registry** (source IP → bottle → policy/secrets refs),
+  the lookup table the attribution invariant reads.
+
+This is deliberately **not** a "single source of truth for all config."
+Config splits into three tiers with different homes:
+
+| Tier | Example | Home |
+|---|---|---|
+| Build-time constants | pool size, IP base, nft table | flat `.env` (PR #350) — must be readable by Nix eval + root bash, zero runtime |
+| User-authored config | bottle manifests, egress routes, secret refs | declarative files under `~/.bot-bottle/` — trust boundary at `$HOME`, git-trackable, "unknown keys die at load" |
+| Runtime state | slot leases, approvals, registry | one shared **`bot-bottle.db`**, solely owned by the orchestrator |
+
+SQLite is right for the runtime tier (mutable, concurrent, queried) and
+wrong for the other two (Nix can't read it at eval time; it fights the
+declarative manifest trust model). Keep the tiers separate.
+
+**One shared `bot-bottle.db` for all runtime state** (decided in review).
+The registry co-tenants the existing host `bot-bottle.db` — the `DbStore`
+framework already namespaces each store by `schema_key`, so slot
+leases / approvals / registry share one file. One place to query, back up,
+and integrate a console against.
+
+- **Host-resident, for durability.** Re-adoption sweeps the registry after
+  an orchestrator restart, so state *must* outlive the orchestrator
+  instance. The file lives on the host (`bot_bottle_root()/db/bot-bottle.db`);
+  the orchestrator unit reaches it, it doesn't carry it.
+- **Integrity by sole ownership, not mount permissions.** Agents can't
+  touch the DB directly wherever it lives (network-isolated in their
+  bottles). The risk is a *compromised agent-facing data-plane service*
+  (egress/git-gate, which parse hostile bytes) writing the registry and
+  forging attribution. Because it's now one shared file, coarse `ro`/`rw`
+  mount-splitting no longer isolates the registry — so the rule is stronger
+  and simpler: **only the orchestrator (control plane) opens `bot-bottle.db`;
+  the data plane and the console reach state through the control-plane RPC,
+  never a direct file handle.** No agent-facing component gets the file, so
+  none can forge attribution. (This supersedes the earlier `ro`-mount idea.)
+  - *Transitional caveat:* today the per-bottle **supervise sidecar
+    rw-bind-mounts `bot-bottle.db`** to write proposals — exactly the
+    pattern the orchestrator removes (supervise consolidates into the
+    orchestrator; sidecar writes become RPC calls). Until that lands, don't
+    put the attribution registry behind a data-plane-writable mount.
+
+Implementation note for the VM slices: SQLite **WAL** over a guest share
+(virtiofs/9p) is finicky (the `-shm`/`-wal` files need real mmap/locking),
+which is a second reason the DB wants a **host-side owner** the orchestrator
+reaches over the RPC rather than a shared mount into the VM. WAL on the
+shared DB is therefore a deliberate, tested future change — not enabled ad
+hoc. `sqlite3` itself is stdlib, so "the host needs SQLite" is a non-cost.
+
+## Sequencing
+
+Jump straight to the **virtualized** end state (not a host-daemon stepping
+stone): a host daemon's agent→`localhost` transport is throwaway once the
+orchestrator becomes a VM. Decouple the two risks instead:
+
+- **Consolidation risk** (one process, all secrets, attribution, reload)
+  and **packaging/transport risk** (VM-to-VM wiring, the shim) are
+  independent. Develop the orchestrator **service as a plain process
+  dev-harness** first, so the consolidation logic (attribution, reload,
+  secret handling) is proven with fast iteration — *then* wrap that exact
+  service in the VM and solve wiring separately.
+
+Backend order (cheapest proof → hardest → last):
+
+1. **Docker orchestrator** — nearly free (the sidecar bundle is already
+   containers; collapse N bundles into one persistent container). Proves
+   consolidation + the `BottleBackend` seam with the least moving parts.
+2. **Firecracker orchestrator** — the real work: the shim + VM-to-VM
+   routing (host forwards `bbfcN` → orchestrator TAP; the nft table grows
+   forward rules where today it drops all non-DNAT egress). Built against
+   the dev-harness so the app logic is already proven.
+3. **macOS (Apple container)** — last (container-to-container networking).
+
+Keep the sidecar **service one shared thing** throughout.
+
+## Non-goals
+
+- Removing OCI/Dockerfile support for agent images (0069's concern).
+- A single database for *all* config (see the three-tier table).
+- Changing the per-bottle isolation of agent workloads — only the sidecar
+  is consolidated; agents stay one-VM/container-each.
+
+## Relationship to other work
+
+- **PRD 0069 (#348):** 0070 subsumes its Stage 1 (per-host sidecar) and
+  Stage 4 (sidecar-as-VM). 0069 retains Stage 2 (nix-built fixed images —
+  a **dependency** here: the orchestrator and agent base must be
+  nix-built so the broker launches from a fixed image set and bootstrapping
+  has no chicken-and-egg) and Stage 3 (in-VM Dockerfile builder).
+- **Minimal CI runner (paused):** the Firecracker broker + no host Docker
+  is what lets a dedicated `gitea` runner user drop the root-equivalent
+  `docker` group — it only needs broker-socket access + `kvm`/pool group
+  membership. This work unblocks it.
+- **Generic `SecretProvider` (#355):** the future secret-handling
+  mechanism (see "Secret handling") — generalizes PRD 0048's
+  `DeployKeyProvisioner` into a user-extensible provider that mints
+  short-lived creds. Shippable independently; the orchestrator's vault
+  mints through it.
+- **PR #350 (netpool single-source):** the same "one source per fact,
+  composition over parallel hierarchies" discipline the contract follows.
+
+## Decisions (review 2026-07-13)
+
+- **Egress sharing:** **consolidate egress** (worth it). Treat it as a
+  minimal, hardened attack surface for a malicious agent rather than
+  keeping it per-bottle; pair it with the identity token above and the
+  short-lived-vault-token mitigations (Secret handling / #355).
+- **Control-plane transport:** **HTTP** — most universal/reliable on every
+  host; unix socket is an optional local optimization (see the contract).
+- **Broker request schema:** **signed-JWT JSON, static flags + ids only**
+  (see the launch broker) — provenance + un-coercible by construction.
+- **State re-adoption:** the restart procedure is:
+  1. **Singleton:** a new orchestrator launch requires no pre-existing
+     orchestrator; any found (healthy or not) is fully shut down first.
+  2. Re-adoption **waits for the new orchestrator to be healthy**.
+  3. Once healthy, it discovers all agents needing adoption via **both the
+     SQLite registry and live process/VM inspection** *before serving any
+     other request*. The two-source sweep is what closes the *in-flight
+     launch* race — a launch that started (VM booting / slot claimed) but
+     hadn't committed to SQLite when the old orchestrator died would be
+     invisible to a SQLite-only sweep; process inspection catches it.
+     Launches should also write an **intent record ahead of committing
+     resources** so the sweep can reconcile intent vs. actual.
+
+## Open questions
+
+- **VM-to-VM routing:** per-backend, and in the design it *is*
+  `BottleBackend.wire()` (DNAT+forward for fc, shared-net for
+  docker/apple), not orchestrator logic. **Not a blocker** — resolvable at
+  implementation time (may require a bit of host modification, as the pool
+  setup already does on NixOS); an earlier "sidecars in VMs" spike showed
+  it's feasible.
+- **Live-reload protocol** for per-bottle policy over the HTTP control
+  plane (add/remove routes/keys/proposals without a restart).
+- **Identity-token delivery:** exactly how the per-bottle token is placed
+  where the agent can present it but not swap in another bottle's.
@@ -1,104 +1,70 @@
 # bot-bottle Firecracker network pool — declarative NixOS module.
 #
 # The one-time privileged setup the Firecracker backend needs: a pool of
-# user-owned point-to-point TAP devices plus a fail-closed nftables table
-# that confines every microVM to its own sidecar.
+# user- (or group-) owned point-to-point TAP devices plus a fail-closed
+# nftables table that confines every microVM to its own sidecar.
 #
 # NON-INVASIVE BY DESIGN. It does NOT flip `networking.nftables.enable`
 # (which would switch your whole host firewall backend) or
 # `systemd.network.enable` (which would hand your interfaces to
-# systemd-networkd). Instead a single systemd oneshot service brings the
-# pool up on boot — the declarative equivalent of
-# `sudo ./scripts/firecracker-netpool.sh up`. The `inet <tableName>` table
-# is independent (its own hooks at priority -10), so it coexists with an
-# iptables `networking.firewall`, Docker, ufw, firewalld, etc.
+# systemd-networkd). Instead a single systemd oneshot brings the pool up
+# on boot by running the SAME bring-up script as every other install
+# path (`scripts/firecracker-netpool.sh`) — so the TAP/nft logic lives in
+# exactly one place. The `inet <tableName>` table is independent (its own
+# hooks at priority -10), so it coexists with an iptables
+# `networking.firewall`, Docker, ufw, firewalld, etc.
 #
-# The oneshot is only restarted when this config changes, so a
-# `nixos-rebuild switch` doesn't tear down TAPs out from under running
-# VMs unless you actually changed the pool.
+# The oneshot is only restarted when this config changes, and the shared
+# script is non-destructive (it never tears down an existing TAP), so a
+# `nixos-rebuild switch` won't cut TAPs out from under running VMs.
 #
-# The option defaults MUST match the backend constants in
-# bot_bottle/backend/firecracker/netpool.py (pool size, IP base, iface
-# prefix, table name). The backend reads the same values at launch from
-# the BOT_BOTTLE_FC_* env vars; if you override an option here, override
-# the matching env var for the CLI too (or set writeEnvFile = true below
-# to have this module emit them). Keep the two sides in lockstep.
+# Single source of the pool defaults: bot_bottle/backend/firecracker/
+# netpool.defaults.env. This module readFile-parses it for the option
+# defaults below, then passes the resolved values back to the script as
+# Environment=, so the host pool and the CLI launcher can't drift.
 { config, lib, pkgs, ... }:

 let
  cfg = config.services.bot-bottle-firecracker;

-  # --- IPv4 <-> int (full 32-bit carry math) -------------------------
-  toOctets = s: map lib.toInt (lib.splitString "." s);
-  ipToInt = s:
-    let o = toOctets s; in
-    (lib.elemAt o 0) * 16777216
-    + (lib.elemAt o 1) * 65536
-    + (lib.elemAt o 2) * 256
-    + (lib.elemAt o 3);
-  intToIp = n:
+  # --- shared single-source defaults ---------------------------------
+  # Parse the KEY=VALUE defaults file (the same one netpool.py and the
+  # shell script read). Pure eval — just readFile, no import-from-
+  # derivation — so it works for both flake and channel consumers.
+  readDefaults = file:
    let
-      b0 = n / 16777216;      r0 = n - b0 * 16777216;
-      b1 = r0 / 65536;        r1 = r0 - b1 * 65536;
-      b2 = r1 / 256;
-      b3 = r1 - b2 * 256;
-    in "${toString b0}.${toString b1}.${toString b2}.${toString b3}";
+      lines = lib.splitString "\n" (builtins.readFile file);
+      keep = l: l != "" && !(lib.hasPrefix "#" l) && lib.hasInfix "=" l;
+      toPair = l:
+        let parts = lib.splitString "=" l;
+        in lib.nameValuePair (lib.head parts)
+             (lib.concatStringsSep "=" (lib.tail parts));
+    in lib.listToAttrs (map toPair (lib.filter keep lines));

-  baseInt = ipToInt cfg.ipBase;
+  defaults = readDefaults ../bot_bottle/backend/firecracker/netpool.defaults.env;

-  # Slot i: host = base + 2i (the VM's gateway), on its own /31.
-  slots = lib.genList (i: {
-    iface = "${cfg.ifacePrefix}${toString i}";
-    hostIp = intToIp (baseInt + 2 * i);
-  }) cfg.poolSize;
+  # The one bring-up implementation, shared with the sudo/systemd paths.
+  netpoolScript = ../scripts/firecracker-netpool.sh;

-  ip = "${pkgs.iproute2}/bin/ip";
-  nft = "${pkgs.nftables}/bin/nft";
+  # /31 alignment == an even final octet (only bit 0 matters for base+2i).
+  lastOctet = lib.toInt (lib.last (lib.splitString "." cfg.ipBase));

-  # Idempotent ruleset: (create-if-absent → delete → recreate) is atomic
-  # within one `nft -f`, so re-running `up` always lands a clean table.
-  nftFile = pkgs.writeText "bot-bottle-fc.nft" ''
-    table inet ${cfg.tableName}
-    delete table inet ${cfg.tableName}
-    table inet ${cfg.tableName} {
-      chain forward {
-        type filter hook forward priority -10; policy accept;
-        iifname != "${cfg.ifacePrefix}*" return
-        ct state established,related accept
-        ct status dnat accept
-        drop
-      }
-      chain input {
-        type filter hook input priority -10; policy accept;
-        iifname != "${cfg.ifacePrefix}*" return
-        ct state established,related accept
-        drop
-      }
-    }
-  '';
+  # The script needs ip/nft/sysctl + the usual coreutils. It gets every
+  # pool value via the unit's Environment=, so it never reads the shared
+  # defaults file (which isn't beside it once copied to the store).
+  runtimePath = with pkgs; [ iproute2 nftables procps coreutils gnused ];

-  # A non-owner user can't open a user-owned TAP, but any member of a
-  # TAP's owning GROUP can (the kernel checks owner-uid OR owning-group).
-  # So `group` lets an interactive user and a CI-runner user share one
-  # pool; `owner` is the single-user default.
-  tapOwn = if cfg.group != null then "group ${cfg.group}" else "user ${cfg.owner}";
+  ownEnv =
+    if cfg.group != null
+    then { BOT_BOTTLE_FC_GROUP = cfg.group; }
+    else { BOT_BOTTLE_FC_OWNER = cfg.owner; };

-  upScript = pkgs.writeShellScript "bot-bottle-fc-netpool-up" ''
-    set -eu
-    ${lib.concatMapStringsSep "\n" (s: ''
-      ${ip} link show ${s.iface} >/dev/null 2>&1 || ${ip} tuntap add dev ${s.iface} mode tap ${tapOwn}
-      ${ip} addr replace ${s.hostIp}/31 dev ${s.iface}
-      ${ip} link set ${s.iface} up
-    '') slots}
-    ${nft} -f ${nftFile}
-  '';
-
-  downScript = pkgs.writeShellScript "bot-bottle-fc-netpool-down" ''
-    ${nft} delete table inet ${cfg.tableName} 2>/dev/null || true
-    ${lib.concatMapStringsSep "\n" (s: ''
-      ${ip} link show ${s.iface} >/dev/null 2>&1 && ${ip} tuntap del dev ${s.iface} mode tap || true
-    '') slots}
-  '';
+  unitEnv = {
+    BOT_BOTTLE_FC_POOL_SIZE = toString cfg.poolSize;
+    BOT_BOTTLE_FC_IP_BASE = cfg.ipBase;
+    BOT_BOTTLE_FC_IFACE_PREFIX = cfg.ifacePrefix;
+    BOT_BOTTLE_FC_NFT_TABLE = cfg.tableName;
+  } // ownEnv;
 in
 {
  options.services.bot-bottle-firecracker = {
@@ -106,25 +72,28 @@ in

    poolSize = lib.mkOption {
      type = lib.types.ints.positive;
-      default = 8;
+      default = lib.toInt defaults.BOT_BOTTLE_FC_POOL_SIZE;
+      defaultText = lib.literalMD "the shared `netpool.defaults.env` value";
      description = "Number of pool slots (concurrent bottles). Must match BOT_BOTTLE_FC_POOL_SIZE.";
    };

    ipBase = lib.mkOption {
      type = lib.types.str;
-      default = "10.243.0.0";
+      default = defaults.BOT_BOTTLE_FC_IP_BASE;
+      defaultText = lib.literalMD "the shared `netpool.defaults.env` value";
      description = ''
        Base IPv4 of the /31 pool; slot i uses host = base + 2i. Must
-        be /31-aligned (even final address) and must match
-        BOT_BOTTLE_FC_IP_BASE. Default is an obscure RFC-1918 /16 that
-        dodges docker/libvirt/k8s/LAN and, deliberately, Tailscale's
-        100.64.0.0/10 CGNAT range.
+        be /31-aligned (even final octet) and must match
+        BOT_BOTTLE_FC_IP_BASE. The shared default is an obscure RFC-1918
+        /16 that dodges docker/libvirt/k8s/LAN and, deliberately,
+        Tailscale's 100.64.0.0/10 CGNAT range.
      '';
    };

    ifacePrefix = lib.mkOption {
      type = lib.types.str;
-      default = "bbfc";
+      default = defaults.BOT_BOTTLE_FC_IFACE_PREFIX;
+      defaultText = lib.literalMD "the shared `netpool.defaults.env` value";
      description = "TAP interface name prefix. Must match BOT_BOTTLE_FC_IFACE_PREFIX.";
    };

@@ -153,7 +122,8 @@ in

    tableName = lib.mkOption {
      type = lib.types.str;
-      default = "bot_bottle_fc";
+      default = defaults.BOT_BOTTLE_FC_NFT_TABLE;
+      defaultText = lib.literalMD "the shared `netpool.defaults.env` value";
      description = "nftables table name for the isolation boundary. Must match netpool.NFT_TABLE.";
    };

@@ -171,7 +141,7 @@ in
  config = lib.mkIf cfg.enable {
    assertions = [
      {
-        assertion = lib.mod baseInt 2 == 0;
+        assertion = lib.mod lastOctet 2 == 0;
        message = "services.bot-bottle-firecracker.ipBase must be /31-aligned (even final octet); got ${cfg.ipBase}.";
      }
      {
@@ -183,17 +153,20 @@ in
    # VM->sidecar traffic is DNAT'd and forwarded, so forwarding must be on.
    boot.kernel.sysctl."net.ipv4.ip_forward" = 1;

-    # One oneshot brings up the whole pool (TAPs + independent nft table).
-    # No networking.nftables.enable / systemd.network.enable — see header.
+    # One oneshot brings up the whole pool (TAPs + independent nft table)
+    # by running the shared bring-up script. No networking.nftables.enable
+    # / systemd.network.enable — see header.
    systemd.services."bot-bottle-firecracker-netpool" = {
      description = "bot-bottle Firecracker TAP pool + nft isolation table";
      wantedBy = [ "multi-user.target" ];
      after = [ "network-pre.target" ];
+      path = runtimePath;
+      environment = unitEnv;
      serviceConfig = {
        Type = "oneshot";
        RemainAfterExit = true;
-        ExecStart = upScript;
-        ExecStop = downScript;
+        ExecStart = "${pkgs.bash}/bin/bash ${netpoolScript} up";
+        ExecStop = "${pkgs.bash}/bin/bash ${netpoolScript} down";
      };
    };

@@ -202,6 +175,7 @@ in
        BOT_BOTTLE_FC_POOL_SIZE=${toString cfg.poolSize}
        BOT_BOTTLE_FC_IP_BASE=${cfg.ipBase}
        BOT_BOTTLE_FC_IFACE_PREFIX=${cfg.ifacePrefix}
+        BOT_BOTTLE_FC_NFT_TABLE=${cfg.tableName}
      '';
    };
  };
@@ -33,24 +33,44 @@
 #   sudo ./scripts/firecracker-netpool.sh down
 #   ./scripts/firecracker-netpool.sh status
 #
-# Env overrides (must match the backend's util.py constants):
-#   BOT_BOTTLE_FC_POOL_SIZE   number of slots (default 8)
-#   BOT_BOTTLE_FC_IP_BASE     base IPv4 of the /31 pool (default 10.243.0.0)
-#   BOT_BOTTLE_FC_IFACE_PREFIX  TAP name prefix (default bbfc)
-#   BOT_BOTTLE_FC_OWNER       owning user (default $SUDO_USER or $USER)
-#   BOT_BOTTLE_FC_GROUP       owning group; if set, TAPs are group-owned
-#                             instead of user-owned, so any group member
-#                             (e.g. an interactive user + a CI runner
-#                             user) can open the pool. Overrides OWNER.
+# Pool params default to the shared single-source file
+# (bot_bottle/backend/firecracker/netpool.defaults.env); a matching
+# env var overrides its key:
+#   BOT_BOTTLE_FC_POOL_SIZE     number of slots
+#   BOT_BOTTLE_FC_IP_BASE       base IPv4 of the /31 pool
+#   BOT_BOTTLE_FC_IFACE_PREFIX  TAP name prefix
+#   BOT_BOTTLE_FC_NFT_TABLE     isolation table name
+#   BOT_BOTTLE_FC_OWNER         owning user (default $SUDO_USER or $USER)
+#   BOT_BOTTLE_FC_GROUP         owning group; if set, TAPs are group-owned
+#                               instead of user-owned, so any group member
+#                               (e.g. an interactive user + a CI runner
+#                               user) can open the pool. Overrides OWNER.

 set -euo pipefail

-POOL_SIZE="${BOT_BOTTLE_FC_POOL_SIZE:-8}"
-IP_BASE="${BOT_BOTTLE_FC_IP_BASE:-10.243.0.0}"
-PREFIX="${BOT_BOTTLE_FC_IFACE_PREFIX:-bbfc}"
+# The single source of the pool defaults, shared with netpool.py and the
+# Nix module. The Nix path passes every value as env (the script runs
+# from the store, detached from this file), so this lookup only matters
+# on the direct/sudo path where the script sits in the repo tree.
+_SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+_DEFAULTS="$_SCRIPT_DIR/../bot_bottle/backend/firecracker/netpool.defaults.env"
+_default() {  # value of KEY=... from the shared file; empty if unavailable
+    [ -f "$_DEFAULTS" ] || return 0
+    sed -n "s/^$1=//p" "$_DEFAULTS" | tail -1
+}
+
+POOL_SIZE="${BOT_BOTTLE_FC_POOL_SIZE:-$(_default BOT_BOTTLE_FC_POOL_SIZE)}"
+IP_BASE="${BOT_BOTTLE_FC_IP_BASE:-$(_default BOT_BOTTLE_FC_IP_BASE)}"
+PREFIX="${BOT_BOTTLE_FC_IFACE_PREFIX:-$(_default BOT_BOTTLE_FC_IFACE_PREFIX)}"
+TABLE="${BOT_BOTTLE_FC_NFT_TABLE:-$(_default BOT_BOTTLE_FC_NFT_TABLE)}"
 OWNER="${BOT_BOTTLE_FC_OWNER:-${SUDO_USER:-$USER}}"
 GROUP="${BOT_BOTTLE_FC_GROUP:-}"
-TABLE="bot_bottle_fc"
+
+# Fail loudly rather than provisioning a half/empty range if a value
+# resolved to nothing (env unset AND the shared file unreadable).
+for _v in POOL_SIZE IP_BASE PREFIX TABLE; do
+    [ -n "${!_v}" ] || { echo "error: $_v unresolved (set BOT_BOTTLE_FC_* or fix $_DEFAULTS)" >&2; exit 1; }
+done

 # Sidecar ports (must match the backend). egress=9099, supervise=9100,
 # git-http=9420. Reached by the VM at its host-side TAP IP.
@@ -94,12 +114,13 @@ cmd_up() {
    for i in $(seq 0 $((POOL_SIZE-1))); do
        local dev host
        dev="$(iface "$i")" ; host="$(host_ip "$i")"
-        if ip link show "$dev" >/dev/null 2>&1; then
-            ip link set "$dev" down 2>/dev/null || true
-            ip tuntap del dev "$dev" mode tap 2>/dev/null || true
-        fi
-        ip tuntap add dev "$dev" mode tap "${own_args[@]}"
-        ip addr add "$host/31" dev "$dev"
+        # Non-destructive + idempotent: only create a missing TAP (tearing
+        # an existing one down would cut a running VM), and `addr replace`
+        # is safe to re-run. Ownership is fixed at creation, so to change
+        # owner/group run `down` then `up`.
+        ip link show "$dev" >/dev/null 2>&1 \
+            || ip tuntap add dev "$dev" mode tap "${own_args[@]}"
+        ip addr replace "$host/31" dev "$dev"
        ip link set "$dev" up
        echo "  $dev  host=$host  guest=$(guest_ip "$i")  $own_desc"
    done
@@ -0,0 +1,56 @@
+"""Integration: the Docker launch broker starts and removes a real container.
+
+Gated on a reachable Docker daemon (skips cleanly otherwise). Uses a tiny
+image; the container may exit immediately — we only assert it exists after
+launch and is gone after teardown.
+"""
+
+from __future__ import annotations
+
+import secrets
+import subprocess
+import unittest
+
+from bot_bottle.orchestrator.broker import LaunchRequest, sign_request
+from bot_bottle.orchestrator.docker_broker import DockerBroker, container_name
+from tests._docker import skip_unless_docker
+
+IMAGE = "busybox"
+
+
+@skip_unless_docker()
+class TestDockerBrokerIntegration(unittest.TestCase):
+    def setUp(self) -> None:
+        self.secret = secrets.token_bytes(16)
+        self.broker = DockerBroker(self.secret)
+        self.bottle_id = "itest" + secrets.token_hex(4)
+        self.name = container_name(self.bottle_id)
+        self.addCleanup(
+            lambda: subprocess.run(
+                ["docker", "rm", "--force", self.name],
+                stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, check=False,
+            )
+        )
+
+    def _exists(self) -> bool:
+        proc = subprocess.run(
+            ["docker", "ps", "-a", "--filter", f"name=^{self.name}$",
+             "--format", "{{.Names}}"],
+            stdout=subprocess.PIPE, text=True, check=False,
+        )
+        return self.name in proc.stdout.split()
+
+    def _submit(self, req: LaunchRequest) -> None:
+        self.broker.submit(sign_request(req, self.secret))
+
+    def test_launch_creates_then_teardown_removes(self) -> None:
+        self._submit(
+            LaunchRequest(op="launch", bottle_id=self.bottle_id, image_ref=IMAGE)
+        )
+        self.assertTrue(self._exists(), "container should exist after launch")
+        self._submit(LaunchRequest(op="teardown", bottle_id=self.bottle_id))
+        self.assertFalse(self._exists(), "container should be gone after teardown")
+
+
+if __name__ == "__main__":
+    unittest.main()
@@ -0,0 +1,45 @@
+"""Integration: the consolidated Docker sidecar is an idempotent singleton.
+
+Gated on a reachable Docker daemon. Uses a unique name so it never
+collides with a real per-host sidecar or a leftover from another run.
+"""
+
+from __future__ import annotations
+
+import secrets
+import subprocess
+import unittest
+
+from bot_bottle.orchestrator.sidecar import DockerSidecar
+from tests._docker import skip_unless_docker
+
+IMAGE = "busybox"
+
+
+@skip_unless_docker()
+class TestDockerSidecarIntegration(unittest.TestCase):
+    def setUp(self) -> None:
+        self.name = "bot-bottle-orch-sidecar-itest-" + secrets.token_hex(4)
+        self.sc = DockerSidecar(IMAGE, name=self.name)
+        self.addCleanup(self.sc.stop)
+
+    def _count(self) -> int:
+        proc = subprocess.run(
+            ["docker", "ps", "-a", "--filter", f"name=^{self.name}$",
+             "--format", "{{.Names}}"],
+            stdout=subprocess.PIPE, text=True, check=False,
+        )
+        return sum(1 for n in proc.stdout.split() if n == self.name)
+
+    def test_ensure_is_idempotent_singleton(self) -> None:
+        self.sc.ensure_running()
+        self.assertEqual(1, self._count())
+        # A second ensure must not spawn a second container — one per host.
+        self.sc.ensure_running()
+        self.assertEqual(1, self._count())
+        self.sc.stop()
+        self.assertEqual(0, self._count())
+
+
+if __name__ == "__main__":
+    unittest.main()
@@ -2,7 +2,7 @@

 Isolates ``HOME`` to a throwaway directory for the entire unit suite so
 no test ever reads or writes the real ``~/.bot-bottle`` (state, queue,
-and audit dirs all derive from ``supervise.bot_bottle_root()`` →
+and audit dirs all derive from ``paths.bot_bottle_root()`` →
 ``Path.home()``). Without this, a test that takes a ``flock`` on the
 real audit log can **block indefinitely** when a live bottle's supervise
 sidecar holds that lock — observed as a hung ``coverage run`` at 0% CPU —
@@ -10,8 +10,12 @@ and unisolated tests otherwise pollute the developer's home dir.

 Individual tests that need their own ``HOME`` still override
 ``os.environ['HOME']`` and restore it; they now restore to this isolated
-dir rather than the real one, so isolation holds either way. Tests that
-patch ``supervise.bot_bottle_root`` directly are unaffected.
+dir rather than the real one, so isolation holds either way.
+
+Tests that need their own app-data root call ``use_bottle_root`` (below),
+which sets ``BOT_BOTTLE_ROOT`` — the supported override read by
+``paths.bot_bottle_root`` — instead of monkey-patching. One env setting
+covers every module and every flat/package copy of the helper.
 """

 from __future__ import annotations
@@ -20,6 +24,9 @@ import atexit
 import os
 import shutil
 import tempfile
+from collections.abc import Callable
+from pathlib import Path
+from unittest import mock

 _real_home = os.environ.get("HOME")
 _tmp_home = tempfile.mkdtemp(prefix="bot-bottle-unit-home.")
@@ -35,3 +42,15 @@ def _restore_home() -> None:


 atexit.register(_restore_home)
+
+
+def use_bottle_root(root: Path) -> Callable[[], None]:
+    """Redirect ``paths.bot_bottle_root()`` to ``root`` by setting
+    ``BOT_BOTTLE_ROOT`` — the supported override. Returns a callable that
+    undoes it (store it as the test's restore hook, or pass to addCleanup).
+
+    Replaces monkey-patching ``paths.bot_bottle_root``; one env var covers
+    every module and the flat/package copies alike (they all read it)."""
+    patcher = mock.patch.dict(os.environ, {"BOT_BOTTLE_ROOT": str(root)})
+    patcher.start()
+    return patcher.stop
@@ -7,7 +7,8 @@ import unittest
 from pathlib import Path
 from unittest.mock import patch

-from bot_bottle import supervise, bottle_state
+from bot_bottle import bottle_state
+from tests.unit import use_bottle_root
 from bot_bottle.backend import ActiveAgent
 from bot_bottle.backend.freeze import get_freezer
 from bot_bottle.backend.docker.freezer import DockerFreezer
@@ -18,13 +19,7 @@ from bot_bottle.backend.firecracker.freezer import FirecrackerFreezer
 class _FakeHomeMixin:
    def _setup_fake_home(self):
        self._tmp = tempfile.TemporaryDirectory(prefix="freezer-test.")
-        original = supervise.bot_bottle_root
-
-        def fake_root() -> Path:
-            return Path(self._tmp.name) / ".bot-bottle"
-
-        supervise.bot_bottle_root = fake_root  # type: ignore[assignment]
-        self._restore = lambda: setattr(supervise, "bot_bottle_root", original)
+        self._restore = use_bottle_root(Path(self._tmp.name) / ".bot-bottle")

    def _teardown_fake_home(self):
        self._restore()
@@ -13,7 +13,7 @@ from pathlib import Path
 from unittest.mock import patch

 from bot_bottle import bottle_state
-from bot_bottle import supervise
+from tests.unit import use_bottle_root
 from bot_bottle.backend import BottleSpec
 from bot_bottle.backend.docker import DockerBottleBackend
 from bot_bottle.backend.resolve_common import mint_slug
@@ -55,11 +55,10 @@ class _FakeStateMixin:
    def setUp(self) -> None:
        self.tmp = tempfile.TemporaryDirectory(prefix="backend-prepare.")
        self.root = Path(self.tmp.name) / ".bot-bottle"
-        self.original_root = supervise.bot_bottle_root
-        supervise.bot_bottle_root = lambda: self.root  # type: ignore[assignment]
+        self._restore = use_bottle_root(self.root)

    def tearDown(self) -> None:
-        supervise.bot_bottle_root = self.original_root  # type: ignore[assignment]
+        self._restore()
        self.tmp.cleanup()


@@ -13,7 +13,7 @@ from pathlib import Path
 from unittest.mock import MagicMock, call, patch

 from bot_bottle import bottle_state
-from bot_bottle import supervise
+from tests.unit import use_bottle_root
 from bot_bottle.backend import Bottle, BottleSpec, ExecResult
 from bot_bottle.backend.docker import DockerBottleBackend
 from bot_bottle.backend.firecracker import FirecrackerBottleBackend
@@ -55,11 +55,10 @@ class _FakeStateMixin:
        self.tmp_dir = tempfile.TemporaryDirectory(prefix="backend-workspace.")
        self.tmp = Path(self.tmp_dir.name)
        self.root = self.tmp / ".bot-bottle"
-        self.original_root = supervise.bot_bottle_root
-        supervise.bot_bottle_root = lambda: self.root  # type: ignore[assignment]
+        self._restore = use_bottle_root(self.root)

    def tearDown(self) -> None:
-        supervise.bot_bottle_root = self.original_root  # type: ignore[assignment]
+        self._restore()
        self.tmp_dir.cleanup()


@@ -6,7 +6,7 @@ import tempfile
 import unittest
 from pathlib import Path

-from bot_bottle import supervise
+from tests.unit import use_bottle_root
 from bot_bottle import bottle_state
 from bot_bottle.bottle_state import (
    BottleMetadata,
@@ -18,13 +18,7 @@ from bot_bottle.bottle_state import (
 class _FakeHomeMixin:
    def _setup_fake_home(self):
        self._tmp = tempfile.TemporaryDirectory(prefix="bottle-state-test.")
-        original = supervise.bot_bottle_root
-
-        def fake_root() -> Path:
-            return Path(self._tmp.name) / ".bot-bottle"
-
-        supervise.bot_bottle_root = fake_root  # type: ignore[assignment]
-        self._restore = lambda: setattr(supervise, "bot_bottle_root", original)
+        self._restore = use_bottle_root(Path(self._tmp.name) / ".bot-bottle")

    def _teardown_fake_home(self):
        self._restore()
@@ -8,7 +8,7 @@ from pathlib import Path
 from unittest.mock import MagicMock, patch

 from bot_bottle.cli.commit import cmd_commit
-from bot_bottle import supervise
+from tests.unit import use_bottle_root
 from bot_bottle import bottle_state
 from bot_bottle.backend.freeze import CommitCancelled

@@ -16,13 +16,7 @@ from bot_bottle.backend.freeze import CommitCancelled
 class _FakeHomeMixin:
    def _setup_fake_home(self):
        self._tmp = tempfile.TemporaryDirectory(prefix="cli-commit-test.")
-        original = supervise.bot_bottle_root
-
-        def fake_root() -> Path:
-            return Path(self._tmp.name) / ".bot-bottle"
-
-        supervise.bot_bottle_root = fake_root  # type: ignore[assignment]
-        self._restore = lambda: setattr(supervise, "bot_bottle_root", original)
+        self._restore = use_bottle_root(Path(self._tmp.name) / ".bot-bottle")

    def _teardown_fake_home(self):
        self._restore()
@@ -8,7 +8,7 @@ import tempfile
 import unittest
 from pathlib import Path

-from bot_bottle import supervise
+from tests.unit import use_bottle_root
 from bot_bottle import bottle_state
 from bot_bottle.cli import start as start_mod

@@ -16,15 +16,10 @@ from bot_bottle.cli import start as start_mod
 class _FakeHomeMixin:
    def _setup_fake_home(self):
        self._tmp = tempfile.TemporaryDirectory(prefix="cli-start-settle.")
-        self._original = supervise.bot_bottle_root
-
-        def fake_root() -> Path:
-            return Path(self._tmp.name) / ".bot-bottle"
-
-        supervise.bot_bottle_root = fake_root  # type: ignore[assignment]
+        self._restore = use_bottle_root(Path(self._tmp.name) / ".bot-bottle")

    def _teardown_fake_home(self):
-        supervise.bot_bottle_root = self._original  # type: ignore[assignment]
+        self._restore()
        self._tmp.cleanup()


@@ -15,7 +15,7 @@ import tempfile
 import unittest
 from pathlib import Path

-from bot_bottle import supervise
+from tests.unit import use_bottle_root
 from bot_bottle import bottle_state
 from bot_bottle.backend.docker.cleanup import _list_orphan_state_dirs

@@ -23,13 +23,7 @@ from bot_bottle.backend.docker.cleanup import _list_orphan_state_dirs
 class _FakeHomeMixin:
    def _setup_fake_home(self) -> None:
        self._tmp = tempfile.TemporaryDirectory(prefix="docker-cleanup-test.")
-        original = supervise.bot_bottle_root
-
-        def fake_root() -> Path:
-            return Path(self._tmp.name) / ".bot-bottle"
-
-        supervise.bot_bottle_root = fake_root  # type: ignore[assignment]
-        self._restore = lambda: setattr(supervise, "bot_bottle_root", original)
+        self._restore = use_bottle_root(Path(self._tmp.name) / ".bot-bottle")

    def _teardown_fake_home(self) -> None:
        self._restore()
@@ -23,7 +23,7 @@ import tempfile
 import unittest
 from pathlib import Path

-from bot_bottle import supervise
+from tests.unit import use_bottle_root
 from bot_bottle import bottle_state
 from bot_bottle.backend.docker import enumerate as _enumerate

@@ -75,13 +75,7 @@ class TestParseServicesByProject(unittest.TestCase):
 class _FakeHomeMixin:
    def _setup_fake_home(self) -> None:
        self._tmp = tempfile.TemporaryDirectory(prefix="enum-active.")
-        original = supervise.bot_bottle_root
-
-        def fake_root() -> Path:
-            return Path(self._tmp.name) / ".bot-bottle"
-
-        supervise.bot_bottle_root = fake_root  # type: ignore[assignment]
-        self._restore_home = lambda: setattr(supervise, "bot_bottle_root", original)
+        self._restore_home = use_bottle_root(Path(self._tmp.name) / ".bot-bottle")

    def _teardown_fake_home(self) -> None:
        self._restore_home()
@@ -8,7 +8,7 @@ from pathlib import Path
 from types import SimpleNamespace
 from unittest.mock import patch

-from bot_bottle import supervise
+from tests.unit import use_bottle_root
 from bot_bottle.backend.egress_apply import EgressApplyError
 from bot_bottle.backend.docker.egress_apply import applicator

@@ -67,14 +67,8 @@ class TestValidateRoutesContent(unittest.TestCase):
 class TestApplyRoutesChange(unittest.TestCase):
    def setUp(self):
        self._tmp = tempfile.TemporaryDirectory(prefix="egress-apply-test.")
-        original = supervise.bot_bottle_root
-
-        def fake_root() -> Path:
-            return Path(self._tmp.name) / ".bot-bottle"
-
-        supervise.bot_bottle_root = fake_root  # type: ignore[assignment]
-        self.addCleanup(lambda: setattr(supervise, "bot_bottle_root", original))
        self.addCleanup(self._tmp.cleanup)
+        self.addCleanup(use_bottle_root(Path(self._tmp.name) / ".bot-bottle"))

    def test_writes_live_routes_and_signals_reload(self):
        calls: list[list[str]] = []
@@ -67,10 +67,24 @@ class TestNetpoolRenderers(unittest.TestCase):
        self.assertNotIn("networking.nftables.enable = true", mod)
        self.assertNotIn("systemd.network.enable = true", mod)
        self.assertIn("bot-bottle-firecracker-netpool", mod)  # the oneshot
-        self.assertIn(netpool.NFT_TABLE, mod)
-        self.assertIn('iifname != "${cfg.ifacePrefix}*" return', mod)
        # Supports group-owned TAPs (shared pool for a multi-user host).
-        self.assertIn("group ${cfg.group}", mod)
+        self.assertIn("BOT_BOTTLE_FC_GROUP", mod)
+
+    def test_nixos_module_delegates_and_holds_no_literals(self):
+        # Single-source discipline: the module must NOT re-implement the
+        # bring-up (it delegates to the shared script) and must NOT hard-
+        # code the pool defaults (it readFile-parses the shared .env), so
+        # nothing can drift from netpool.py / the shell script.
+        root = Path(__file__).resolve().parents[2]
+        mod = (root / "nix" / "firecracker-netpool.nix").read_text()
+        # Delegation to the one bring-up implementation + shared defaults.
+        self.assertIn("scripts/firecracker-netpool.sh", mod)
+        self.assertIn("netpool.defaults.env", mod)
+        self.assertIn("BOT_BOTTLE_FC_NFT_TABLE", mod)
+        # No duplicated literals or nft ruleset.
+        self.assertNotIn(netpool.ip_base(), mod)      # 10.243.0.0
+        self.assertNotIn(netpool.NFT_TABLE, mod)      # bot_bottle_fc
+        self.assertNotIn("ct status dnat", mod)       # the nft ruleset

    def test_shell_setup_reflects_overrides(self):
        with patch.dict(os.environ, {"BOT_BOTTLE_FC_POOL_SIZE": "3"}):
@@ -262,26 +276,43 @@ class TestBottleAgentArgv(unittest.TestCase):
        self.assertIn("USER=node", argv)


-class TestSetupScriptConsistency(unittest.TestCase):
-    """The shell setup script duplicates the pool defaults; keep them in
-    lockstep with the Python constants so the two setup paths agree."""
+class TestNetpoolDefaultsSingleSource(unittest.TestCase):
+    """The pool defaults live in one shared file (netpool.defaults.env);
+    Python parses it and the shell script + Nix module read the same file,
+    so the three setup paths can't drift."""

-    def _script(self) -> str:
-        root = Path(__file__).resolve().parent.parent.parent
-        return (root / "scripts" / "firecracker-netpool.sh").read_text()
+    def _root(self) -> Path:
+        return Path(__file__).resolve().parents[2]

-    def test_defaults_match_python(self):
-        script = self._script()
+    def _shared_defaults(self) -> dict[str, str]:
+        text = netpool.DEFAULTS_FILE.read_text()
+        out: dict[str, str] = {}
+        for raw in text.splitlines():
+            line = raw.strip()
+            if line and not line.startswith("#") and "=" in line:
+                k, _, v = line.partition("=")
+                out[k.strip()] = v.strip()
+        return out
+
+    def test_python_reads_the_shared_file(self):
+        d = self._shared_defaults()
        with patch.dict(os.environ, {}, clear=True):
-            self.assertIn(f'POOL_SIZE:-{netpool.pool_size()}', script)
-            self.assertIn(f'BOT_BOTTLE_FC_IP_BASE:-{netpool.ip_base()}', script)
-            self.assertIn(f'IFACE_PREFIX:-{netpool.IFACE_PREFIX}', script)
+            self.assertEqual(int(d["BOT_BOTTLE_FC_POOL_SIZE"]), netpool.pool_size())
+            self.assertEqual(d["BOT_BOTTLE_FC_IP_BASE"], netpool.ip_base())
+        # Module constants resolve through the same shared file.
+        self.assertEqual(d["BOT_BOTTLE_FC_IFACE_PREFIX"], netpool.IFACE_PREFIX)
+        self.assertEqual(d["BOT_BOTTLE_FC_NFT_TABLE"], netpool.NFT_TABLE)

-    def test_table_name_and_ports_match(self):
-        script = self._script()
-        self.assertIn(f'TABLE="{netpool.NFT_TABLE}"', script)
-        for port in netpool.SIDECAR_PORTS:
-            self.assertIn(str(port), script)
+    def test_env_var_overrides_the_shared_default(self):
+        with patch.dict(os.environ, {"BOT_BOTTLE_FC_IP_BASE": "10.99.0.0"}):
+            self.assertEqual("10.99.0.0", netpool.ip_base())
+
+    def test_script_defers_to_shared_file_without_literals(self):
+        script = (self._root() / "scripts" / "firecracker-netpool.sh").read_text()
+        # Delegates its defaults to the shared file, not hardcoded values.
+        self.assertIn("netpool.defaults.env", script)
+        self.assertIn("BOT_BOTTLE_FC_POOL_SIZE:-$(_default BOT_BOTTLE_FC_POOL_SIZE)", script)
+        self.assertIn('TABLE="${BOT_BOTTLE_FC_NFT_TABLE:-$(_default BOT_BOTTLE_FC_NFT_TABLE)}"', script)


 class TestBootArgs(unittest.TestCase):
@@ -0,0 +1,86 @@
+"""Unit tests for the orchestrator launch broker (PRD 0070)."""
+
+from __future__ import annotations
+
+import secrets
+import unittest
+
+from bot_bottle.orchestrator.broker import (
+    BrokerAuthError,
+    LaunchRequest,
+    StubBroker,
+    sign_request,
+    verify_request,
+)
+
+
+class TestSignVerify(unittest.TestCase):
+    def setUp(self) -> None:
+        self.secret = secrets.token_bytes(16)
+
+    def test_launch_round_trip(self) -> None:
+        req = LaunchRequest(
+            op="launch", bottle_id="b1", source_ip="10.243.0.1",
+            image_ref="sha256:abc", slot=3,
+        )
+        self.assertEqual(req, verify_request(sign_request(req, self.secret), self.secret))
+
+    def test_teardown_round_trip(self) -> None:
+        req = LaunchRequest(op="teardown", bottle_id="b1")
+        got = verify_request(sign_request(req, self.secret), self.secret)
+        self.assertEqual(("teardown", "b1"), (got.op, got.bottle_id))
+
+    def test_wrong_secret_rejected(self) -> None:
+        token = sign_request(LaunchRequest(op="launch", bottle_id="b1"), self.secret)
+        with self.assertRaises(BrokerAuthError):
+            verify_request(token, secrets.token_bytes(16))
+
+    def test_tampered_payload_rejected(self) -> None:
+        token = sign_request(LaunchRequest(op="launch", bottle_id="b1"), self.secret)
+        header, payload, sig = token.split(".")
+        flipped = payload[:-1] + ("A" if payload[-1] != "A" else "B")
+        with self.assertRaises(BrokerAuthError):
+            verify_request(f"{header}.{flipped}.{sig}", self.secret)
+
+    def test_malformed_tokens_rejected(self) -> None:
+        for bad in ("", "a.b", "a.b.c.d", "not-a-token"):
+            with self.assertRaises(BrokerAuthError):
+                verify_request(bad, self.secret)
+
+    def test_unknown_op_rejected_despite_valid_signature(self) -> None:
+        # A correctly-signed token whose op isn't in the allow-list must
+        # still be refused — the schema guard is independent of provenance.
+        token = sign_request(LaunchRequest(op="rm-rf", bottle_id="b1"), self.secret)
+        with self.assertRaises(BrokerAuthError):
+            verify_request(token, self.secret)
+
+
+class TestStubBroker(unittest.TestCase):
+    def setUp(self) -> None:
+        self.secret = secrets.token_bytes(16)
+        self.broker = StubBroker(self.secret)
+
+    def test_submit_launch_records_verified_request(self) -> None:
+        req = LaunchRequest(op="launch", bottle_id="b1", source_ip="10.243.0.1")
+        got = self.broker.submit(sign_request(req, self.secret))
+        self.assertEqual(req, got)
+        self.assertEqual(["b1"], [r.bottle_id for r in self.broker.launched])
+        self.assertEqual([], self.broker.torn_down)
+
+    def test_submit_teardown_records(self) -> None:
+        self.broker.submit(
+            sign_request(LaunchRequest(op="teardown", bottle_id="b1"), self.secret)
+        )
+        self.assertEqual(["b1"], [r.bottle_id for r in self.broker.torn_down])
+
+    def test_submit_forged_token_is_fail_closed(self) -> None:
+        forged = sign_request(
+            LaunchRequest(op="launch", bottle_id="b1"), secrets.token_bytes(16)
+        )
+        with self.assertRaises(BrokerAuthError):
+            self.broker.submit(forged)
+        self.assertEqual([], self.broker.launched)  # nothing acted on
+
+
+if __name__ == "__main__":
+    unittest.main()
@@ -0,0 +1,163 @@
+"""Unit tests for the orchestrator HTTP control plane (PRD 0070).
+
+Mostly exercises the pure `dispatch()` (socket-free, like the supervise
+server tests), plus one real-socket round-trip to prove the handler wiring.
+"""
+
+from __future__ import annotations
+
+import json
+import secrets
+import tempfile
+import threading
+import unittest
+import urllib.request
+from pathlib import Path
+
+from bot_bottle.orchestrator.broker import StubBroker
+from bot_bottle.orchestrator.control_plane import dispatch, make_server
+from bot_bottle.orchestrator.registry import RegistryStore
+from bot_bottle.orchestrator.service import Orchestrator
+
+
+def _body(obj: object) -> bytes:
+    return json.dumps(obj).encode()
+
+
+def _orchestrator(db_path: Path) -> Orchestrator:
+    store = RegistryStore(db_path)
+    store.migrate()
+    secret = secrets.token_bytes(16)
+    return Orchestrator(store, StubBroker(secret), secret)
+
+
+class TestDispatch(unittest.TestCase):
+    def setUp(self) -> None:
+        self._tmp = tempfile.TemporaryDirectory()
+        self.orch = _orchestrator(Path(self._tmp.name) / "r.db")
+
+    def tearDown(self) -> None:
+        self._tmp.cleanup()
+
+    def test_health(self) -> None:
+        status, payload = dispatch(self.orch, "GET", "/health", b"")
+        self.assertEqual(200, status)
+        self.assertEqual("ok", payload["status"])
+
+    def test_register_returns_id_and_token(self) -> None:
+        status, payload = dispatch(
+            self.orch, "POST", "/bottles", _body({"source_ip": "10.243.0.1"})
+        )
+        self.assertEqual(201, status)
+        self.assertTrue(payload["bottle_id"])
+        self.assertTrue(payload["identity_token"])
+
+    def test_register_requires_source_ip(self) -> None:
+        status, _ = dispatch(self.orch, "POST", "/bottles", _body({}))
+        self.assertEqual(400, status)
+
+    def test_register_rejects_bad_json(self) -> None:
+        status, _ = dispatch(self.orch, "POST", "/bottles", b"{not json")
+        self.assertEqual(400, status)
+
+    def test_list_redacts_identity_token(self) -> None:
+        dispatch(self.orch, "POST", "/bottles", _body({"source_ip": "10.243.0.1"}))
+        status, payload = dispatch(self.orch, "GET", "/bottles", b"")
+        self.assertEqual(200, status)
+        bottles = payload["bottles"]
+        assert isinstance(bottles, list)
+        self.assertEqual(1, len(bottles))
+        first = bottles[0]
+        assert isinstance(first, dict)
+        self.assertNotIn("identity_token", first)
+        self.assertEqual("10.243.0.1", first["source_ip"])
+
+    def test_attribute_ok_and_forbidden(self) -> None:
+        _, reg = dispatch(
+            self.orch, "POST", "/bottles", _body({"source_ip": "10.243.0.5"})
+        )
+        token = reg["identity_token"]
+        ok_status, ok = dispatch(
+            self.orch, "POST", "/attribute",
+            _body({"source_ip": "10.243.0.5", "identity_token": token}),
+        )
+        self.assertEqual(200, ok_status)
+        self.assertEqual(reg["bottle_id"], ok["bottle_id"])
+
+        bad_status, _ = dispatch(
+            self.orch, "POST", "/attribute",
+            _body({"source_ip": "10.243.0.5", "identity_token": "nope"}),
+        )
+        self.assertEqual(403, bad_status)
+
+    def test_attribute_requires_both_fields(self) -> None:
+        status, _ = dispatch(
+            self.orch, "POST", "/attribute", _body({"source_ip": "10.243.0.5"})
+        )
+        self.assertEqual(400, status)
+
+    def test_delete(self) -> None:
+        _, reg = dispatch(
+            self.orch, "POST", "/bottles", _body({"source_ip": "10.243.0.1"})
+        )
+        bid = reg["bottle_id"]
+        status, payload = dispatch(self.orch, "DELETE", f"/bottles/{bid}", b"")
+        self.assertEqual(200, status)
+        self.assertEqual(True, payload["torn_down"])
+        self.assertEqual([], self.orch.registry.all())
+
+    def test_delete_missing_404(self) -> None:
+        status, _ = dispatch(self.orch, "DELETE", "/bottles/ghost", b"")
+        self.assertEqual(404, status)
+
+    def test_unknown_route_404(self) -> None:
+        status, _ = dispatch(self.orch, "GET", "/nope", b"")
+        self.assertEqual(404, status)
+
+    def test_trailing_slash_normalized(self) -> None:
+        status, _ = dispatch(self.orch, "GET", "/health/", b"")
+        self.assertEqual(200, status)
+
+    def test_sidecar_status_unconfigured(self) -> None:
+        status, payload = dispatch(self.orch, "GET", "/sidecar", b"")
+        self.assertEqual(200, status)
+        self.assertEqual(False, payload["configured"])
+
+
+class TestServerRoundTrip(unittest.TestCase):
+    def test_http_register_health_attribute(self) -> None:
+        tmp = tempfile.TemporaryDirectory()
+        self.addCleanup(tmp.cleanup)
+        orch = _orchestrator(Path(tmp.name) / "r.db")
+        server = make_server(orch, "127.0.0.1", 0)
+        self.addCleanup(server.server_close)
+        thread = threading.Thread(target=server.serve_forever, daemon=True)
+        thread.start()
+        self.addCleanup(server.shutdown)
+
+        host, port = server.server_address[0], server.server_address[1]
+        base = f"http://{host}:{port}"
+
+        reg = json.load(urllib.request.urlopen(
+            urllib.request.Request(
+                f"{base}/bottles", data=_body({"source_ip": "10.243.0.7"}),
+                method="POST", headers={"Content-Type": "application/json"},
+            ), timeout=5,
+        ))
+        self.assertTrue(reg["bottle_id"])
+
+        health = json.load(urllib.request.urlopen(f"{base}/health", timeout=5))
+        self.assertEqual("ok", health["status"])
+
+        attr = json.load(urllib.request.urlopen(
+            urllib.request.Request(
+                f"{base}/attribute",
+                data=_body({"source_ip": "10.243.0.7", "identity_token": reg["identity_token"]}),
+                method="POST", headers={"Content-Type": "application/json"},
+            ), timeout=5,
+        ))
+        self.assertEqual(reg["bottle_id"], attr["bottle_id"])
+
+
+if __name__ == "__main__":
+    unittest.main()
@@ -0,0 +1,100 @@
+"""Unit tests for the Docker launch broker (PRD 0070). Docker is mocked."""
+
+from __future__ import annotations
+
+import secrets
+import unittest
+from unittest.mock import Mock, patch
+
+from bot_bottle.orchestrator.broker import (
+    BrokerAuthError,
+    LaunchRequest,
+    sign_request,
+)
+from bot_bottle.orchestrator.docker_broker import (
+    BOTTLE_ID_LABEL,
+    DockerBroker,
+    DockerBrokerError,
+    container_name,
+    rm_argv,
+    run_argv,
+)
+
+
+class TestArgv(unittest.TestCase):
+    def test_run_argv_uses_only_static_fields(self) -> None:
+        req = LaunchRequest(op="launch", bottle_id="b1", image_ref="busybox")
+        argv = run_argv(req)
+        self.assertEqual(["docker", "run"], argv[:2])
+        self.assertIn("--name", argv)
+        self.assertIn(container_name("b1"), argv)
+        self.assertIn(f"{BOTTLE_ID_LABEL}=b1", argv)
+        self.assertEqual("busybox", argv[-1])  # image is the terminal arg
+
+    def test_rm_argv(self) -> None:
+        req = LaunchRequest(op="teardown", bottle_id="b1")
+        self.assertEqual(["docker", "rm", "--force", container_name("b1")], rm_argv(req))
+
+    def test_container_name_is_prefixed(self) -> None:
+        name = container_name("b1")
+        self.assertTrue(name.startswith("bot-bottle-orch-"))
+        self.assertTrue(name.endswith("b1"))
+
+
+class TestDockerBroker(unittest.TestCase):
+    def setUp(self) -> None:
+        self.secret = secrets.token_bytes(16)
+        self.broker = DockerBroker(self.secret)
+
+    def _submit(self, req: LaunchRequest) -> None:
+        self.broker.submit(sign_request(req, self.secret))
+
+    def test_launch_invokes_docker_run(self) -> None:
+        req = LaunchRequest(op="launch", bottle_id="b1", image_ref="busybox")
+        with patch.object(self.broker, "_docker", return_value=Mock(returncode=0, stderr="")) as m:
+            self._submit(req)
+        m.assert_called_once()
+        self.assertEqual(run_argv(req), m.call_args.args[0])
+
+    def test_launch_without_image_raises_and_skips_docker(self) -> None:
+        req = LaunchRequest(op="launch", bottle_id="b1", image_ref="")
+        with patch.object(self.broker, "_docker") as m:
+            with self.assertRaises(DockerBrokerError):
+                self._submit(req)
+            m.assert_not_called()
+
+    def test_launch_docker_failure_raises(self) -> None:
+        req = LaunchRequest(op="launch", bottle_id="b1", image_ref="busybox")
+        with patch.object(self.broker, "_docker", return_value=Mock(returncode=1, stderr="boom")):
+            with self.assertRaises(DockerBrokerError):
+                self._submit(req)
+
+    def test_teardown_invokes_docker_rm(self) -> None:
+        req = LaunchRequest(op="teardown", bottle_id="b1")
+        with patch.object(self.broker, "_docker", return_value=Mock(returncode=0, stderr="")) as m:
+            self._submit(req)
+        self.assertEqual(rm_argv(req), m.call_args.args[0])
+
+    def test_teardown_is_idempotent_on_missing_container(self) -> None:
+        req = LaunchRequest(op="teardown", bottle_id="b1")
+        absent = Mock(returncode=1, stderr="Error: No such container: bot-bottle-orch-b1")
+        with patch.object(self.broker, "_docker", return_value=absent):
+            self._submit(req)  # must not raise
+
+    def test_teardown_other_failure_raises(self) -> None:
+        req = LaunchRequest(op="teardown", bottle_id="b1")
+        with patch.object(self.broker, "_docker", return_value=Mock(returncode=1, stderr="daemon down")):
+            with self.assertRaises(DockerBrokerError):
+                self._submit(req)
+
+    def test_forged_token_never_touches_docker(self) -> None:
+        req = LaunchRequest(op="launch", bottle_id="b1", image_ref="busybox")
+        forged = sign_request(req, secrets.token_bytes(16))
+        with patch.object(self.broker, "_docker") as m:
+            with self.assertRaises(BrokerAuthError):
+                self.broker.submit(forged)
+            m.assert_not_called()
+
+
+if __name__ == "__main__":
+    unittest.main()
@@ -0,0 +1,102 @@
+"""Unit tests for the orchestrator bottle registry + attribution (PRD 0070)."""
+
+from __future__ import annotations
+
+import tempfile
+import unittest
+from pathlib import Path
+
+from bot_bottle.orchestrator.registry import (
+    BottleRecord,
+    RegistryStore,
+    new_identity_token,
+)
+
+
+class TestRegistryStore(unittest.TestCase):
+    def setUp(self) -> None:
+        self._tmp = tempfile.TemporaryDirectory()
+        self.db = Path(self._tmp.name) / "registry.db"
+        self.store = RegistryStore(self.db)
+        self.store.migrate()
+
+    def tearDown(self) -> None:
+        self._tmp.cleanup()
+
+    def test_register_mints_id_and_token(self) -> None:
+        rec = self.store.register("10.243.0.1")
+        self.assertTrue(rec.bottle_id)
+        self.assertTrue(rec.identity_token)
+        self.assertEqual("active", rec.state)
+        self.assertEqual(rec, self.store.get(rec.bottle_id))
+
+    def test_identity_tokens_are_unique(self) -> None:
+        tokens = {new_identity_token() for _ in range(200)}
+        self.assertEqual(200, len(tokens))
+        a = self.store.register("10.243.0.1")
+        b = self.store.register("10.243.0.3")
+        self.assertNotEqual(a.identity_token, b.identity_token)
+
+    def test_all_and_deregister(self) -> None:
+        a = self.store.register("10.243.0.1")
+        b = self.store.register("10.243.0.3")
+        self.assertEqual({a.bottle_id, b.bottle_id}, {r.bottle_id for r in self.store.all()})
+        self.assertTrue(self.store.deregister(a.bottle_id))
+        self.assertEqual([b.bottle_id], [r.bottle_id for r in self.store.all()])
+
+    def test_deregister_missing_is_false(self) -> None:
+        self.assertFalse(self.store.deregister("nope"))
+
+    def test_explicit_id_replaces(self) -> None:
+        self.store.register("10.243.0.1", bottle_id="fixed", metadata="a")
+        self.store.register("10.243.0.9", bottle_id="fixed", metadata="b")
+        rec = self.store.get("fixed")
+        assert rec is not None
+        self.assertEqual("10.243.0.9", rec.source_ip)
+        self.assertEqual("b", rec.metadata)
+        self.assertEqual(1, len(self.store.all()))
+
+    def test_attribute_success_requires_ip_and_token(self) -> None:
+        rec = self.store.register("10.243.0.1")
+        got = self.store.attribute("10.243.0.1", rec.identity_token)
+        assert got is not None
+        self.assertEqual(rec.bottle_id, got.bottle_id)
+
+    def test_attribute_wrong_token_denied(self) -> None:
+        self.store.register("10.243.0.1")
+        self.assertIsNone(self.store.attribute("10.243.0.1", "wrong-token"))
+
+    def test_attribute_unknown_ip_denied(self) -> None:
+        rec = self.store.register("10.243.0.1")
+        self.assertIsNone(self.store.attribute("10.243.9.9", rec.identity_token))
+
+    def test_attribute_empty_token_denied(self) -> None:
+        self.store.register("10.243.0.1")
+        self.assertIsNone(self.store.attribute("10.243.0.1", ""))
+
+    def test_attribute_ambiguous_ip_denied(self) -> None:
+        # Two active bottles on one source IP is a misconfiguration — deny
+        # rather than guess (fail-closed), even with a valid token.
+        a = self.store.register("10.243.0.1", bottle_id="a")
+        self.store.register("10.243.0.1", bottle_id="b")
+        self.assertIsNone(self.store.attribute("10.243.0.1", a.identity_token))
+
+    def test_state_persists_across_reopen(self) -> None:
+        rec = self.store.register("10.243.0.1")
+        reopened = RegistryStore(self.db)
+        got = reopened.get(rec.bottle_id)
+        assert got is not None
+        self.assertEqual(rec, got)
+        # Attribution works against the reopened (durable) store too.
+        self.assertIsNotNone(reopened.attribute("10.243.0.1", rec.identity_token))
+
+    def test_redacted_hides_token(self) -> None:
+        rec = BottleRecord(
+            bottle_id="x", source_ip="10.243.0.1", identity_token="secret"
+        )
+        self.assertNotIn("identity_token", rec.redacted())
+        self.assertEqual("10.243.0.1", rec.redacted()["source_ip"])
+
+
+if __name__ == "__main__":
+    unittest.main()
@@ -0,0 +1,111 @@
+"""Unit tests for the Orchestrator launch lifecycle (PRD 0070)."""
+
+from __future__ import annotations
+
+import secrets
+import tempfile
+import unittest
+from pathlib import Path
+
+from bot_bottle.orchestrator.broker import LaunchBroker, LaunchRequest, StubBroker
+from bot_bottle.orchestrator.registry import RegistryStore
+from bot_bottle.orchestrator.service import Orchestrator
+from bot_bottle.orchestrator.sidecar import Sidecar
+
+
+class _FailingBroker(LaunchBroker):
+    """Verifies the token like any broker, then fails the launch — to
+    exercise the orchestrator's registry rollback."""
+
+    def _launch(self, req: LaunchRequest) -> None:
+        raise RuntimeError("launch failed")
+
+    def _teardown(self, req: LaunchRequest) -> None:
+        pass
+
+
+class _FakeSidecar(Sidecar):
+    """In-memory sidecar for wiring tests."""
+
+    def __init__(self) -> None:
+        self.name = "fake-sidecar"
+        self.ensured = 0
+        self._running = False
+
+    def ensure_running(self) -> None:
+        self.ensured += 1
+        self._running = True
+
+    def is_running(self) -> bool:
+        return self._running
+
+    def stop(self) -> None:
+        self._running = False
+
+
+class TestOrchestrator(unittest.TestCase):
+    def setUp(self) -> None:
+        self._tmp = tempfile.TemporaryDirectory()
+        self.secret = secrets.token_bytes(16)
+        self.store = RegistryStore(Path(self._tmp.name) / "r.db")
+        self.store.migrate()
+        self.broker = StubBroker(self.secret)
+        self.orch = Orchestrator(self.store, self.broker, self.secret)
+
+    def tearDown(self) -> None:
+        self._tmp.cleanup()
+
+    def test_launch_registers_and_brokers_signed_request(self) -> None:
+        rec = self.orch.launch_bottle("10.243.0.1", image_ref="sha256:abc", slot=2)
+        self.assertIsNotNone(self.store.get(rec.bottle_id))
+        self.assertEqual(1, len(self.broker.launched))
+        req = self.broker.launched[0]
+        self.assertEqual("launch", req.op)
+        self.assertEqual(rec.bottle_id, req.bottle_id)
+        self.assertEqual("10.243.0.1", req.source_ip)
+        self.assertEqual("sha256:abc", req.image_ref)
+        self.assertEqual(2, req.slot)
+
+    def test_launch_then_attribute(self) -> None:
+        rec = self.orch.launch_bottle("10.243.0.3")
+        got = self.orch.attribute("10.243.0.3", rec.identity_token)
+        assert got is not None
+        self.assertEqual(rec.bottle_id, got.bottle_id)
+        self.assertIsNone(self.orch.attribute("10.243.0.3", "wrong-token"))
+
+    def test_teardown_brokers_and_deregisters(self) -> None:
+        rec = self.orch.launch_bottle("10.243.0.1")
+        self.assertTrue(self.orch.teardown_bottle(rec.bottle_id))
+        self.assertIsNone(self.store.get(rec.bottle_id))
+        self.assertEqual(["teardown"], [r.op for r in self.broker.torn_down])
+
+    def test_teardown_unknown_is_false(self) -> None:
+        self.assertFalse(self.orch.teardown_bottle("ghost"))
+
+    def test_launch_rolls_back_registry_on_broker_failure(self) -> None:
+        orch = Orchestrator(self.store, _FailingBroker(self.secret), self.secret)
+        with self.assertRaises(RuntimeError):
+            orch.launch_bottle("10.243.0.9")
+        self.assertEqual([], self.store.all())  # no orphan
+
+    def test_sidecar_unconfigured_by_default(self) -> None:
+        self.assertEqual({"configured": False}, self.orch.sidecar_status())
+        self.orch.ensure_sidecar()  # no-op, must not raise
+
+    def test_sidecar_wired_and_ensured(self) -> None:
+        sc = _FakeSidecar()
+        orch = Orchestrator(self.store, self.broker, self.secret, sidecar=sc)
+        self.assertEqual(
+            {"configured": True, "name": "fake-sidecar", "running": False},
+            orch.sidecar_status(),
+        )
+        orch.ensure_sidecar()
+        self.assertEqual(1, sc.ensured)
+        self.assertEqual(
+            {"configured": True, "name": "fake-sidecar", "running": True},
+            orch.sidecar_status(),
+        )
+
+
+if __name__ == "__main__":
+    unittest.main()
@@ -0,0 +1,79 @@
+"""Unit tests for the consolidated Docker sidecar (PRD 0070). Docker mocked."""
+
+from __future__ import annotations
+
+import unittest
+from unittest.mock import Mock, patch
+
+from bot_bottle.orchestrator.sidecar import (
+    SIDECAR_NAME,
+    DockerSidecar,
+    SidecarError,
+)
+
+_RUN_DOCKER = "bot_bottle.orchestrator.sidecar.run_docker"
+
+
+def _proc(returncode: int = 0, stdout: str = "", stderr: str = "") -> Mock:
+    return Mock(returncode=returncode, stdout=stdout, stderr=stderr)
+
+
+class TestDockerSidecar(unittest.TestCase):
+    def setUp(self) -> None:
+        self.sc = DockerSidecar("bot-bottle-sidecars:latest")
+
+    def test_default_name(self) -> None:
+        self.assertEqual(SIDECAR_NAME, self.sc.name)
+
+    def test_is_running_reads_docker_ps(self) -> None:
+        with patch(_RUN_DOCKER, return_value=_proc(stdout=self.sc.name + "\n")):
+            self.assertTrue(self.sc.is_running())
+        with patch(_RUN_DOCKER, return_value=_proc(stdout="")):
+            self.assertFalse(self.sc.is_running())
+
+    def test_ensure_running_is_noop_when_already_up(self) -> None:
+        with patch(_RUN_DOCKER, return_value=_proc(stdout=self.sc.name)) as m:
+            self.sc.ensure_running()
+        # Only the is_running() ps probe — no rm / run.
+        self.assertEqual(1, m.call_count)
+
+    def test_ensure_running_starts_the_singleton_when_absent(self) -> None:
+        calls: list[list[str]] = []
+
+        def fake(argv: list[str]) -> Mock:
+            calls.append(argv)
+            return _proc(stdout="") if argv[:2] == ["docker", "ps"] else _proc()
+
+        with patch(_RUN_DOCKER, side_effect=fake):
+            self.sc.ensure_running()
+
+        runs = [c for c in calls if c[:2] == ["docker", "run"]]
+        self.assertEqual(1, len(runs))
+        self.assertIn(self.sc.name, runs[0])
+        self.assertIn("bot-bottle-sidecars:latest", runs[0])
+
+    def test_ensure_running_raises_on_docker_failure(self) -> None:
+        def fake(argv: list[str]) -> Mock:
+            if argv[:2] == ["docker", "ps"]:
+                return _proc(stdout="")
+            if argv[:2] == ["docker", "run"]:
+                return _proc(returncode=1, stderr="boom")
+            return _proc()
+
+        with patch(_RUN_DOCKER, side_effect=fake):
+            with self.assertRaises(SidecarError):
+                self.sc.ensure_running()
+
+    def test_stop_is_idempotent_on_missing(self) -> None:
+        absent = _proc(returncode=1, stderr="Error: No such container: x")
+        with patch(_RUN_DOCKER, return_value=absent):
+            self.sc.stop()  # must not raise
+
+    def test_stop_raises_on_other_failure(self) -> None:
+        with patch(_RUN_DOCKER, return_value=_proc(returncode=1, stderr="daemon down")):
+            with self.assertRaises(SidecarError):
+                self.sc.stop()
+
+
+if __name__ == "__main__":
+    unittest.main()
@@ -8,7 +8,8 @@ from datetime import datetime, timezone
 from pathlib import Path

 from bot_bottle import supervise
-from bot_bottle import supervise_types as sv_types
+from bot_bottle.paths import host_db_path
+from tests.unit import use_bottle_root
 from bot_bottle.audit_store import AuditStore
 from bot_bottle.queue_store import QueueStore
 from bot_bottle.supervise import (
@@ -21,7 +22,6 @@ from bot_bottle.supervise import (
    TOOL_EGRESS_ALLOW,
    TOOL_GITLEAKS_ALLOW,
    archive_proposal,
-    host_db_path,
    list_pending_proposals,
    read_audit_entries,
    read_proposal,
@@ -123,20 +123,7 @@ class TestQueueIO(unittest.TestCase):
        self._tmp.cleanup()

    def _patch_home(self, fake_home: Path):
-        original_sv = supervise.bot_bottle_root
-        original_svt = sv_types.bot_bottle_root
-
-        def fake_root() -> Path:
-            return fake_home / ".bot-bottle"
-
-        supervise.bot_bottle_root = fake_root  # type: ignore[assignment]
-        sv_types.bot_bottle_root = fake_root  # type: ignore[assignment]
-
-        def restore() -> None:
-            supervise.bot_bottle_root = original_sv  # type: ignore[assignment]
-            sv_types.bot_bottle_root = original_svt  # type: ignore[assignment]
-
-        return restore
+        return use_bottle_root(fake_home / ".bot-bottle")

    def test_write_and_read_proposal(self):
        p = _proposal()
@@ -240,20 +227,7 @@ class TestAuditLog(unittest.TestCase):
        self._tmp.cleanup()

    def _patch_home(self, fake_home: Path):
-        original_sv = supervise.bot_bottle_root
-        original_svt = sv_types.bot_bottle_root
-
-        def fake_root() -> Path:
-            return fake_home / ".bot-bottle"
-
-        supervise.bot_bottle_root = fake_root  # type: ignore[assignment]
-        sv_types.bot_bottle_root = fake_root  # type: ignore[assignment]
-
-        def restore() -> None:
-            supervise.bot_bottle_root = original_sv  # type: ignore[assignment]
-            sv_types.bot_bottle_root = original_svt  # type: ignore[assignment]
-
-        return restore
+        return use_bottle_root(fake_home / ".bot-bottle")

    def test_write_then_read_single_entry(self):
        e = AuditEntry(
@@ -400,20 +374,7 @@ class TestSupervisePrepare(unittest.TestCase):
        self._tmp.cleanup()

    def _patch_home(self, fake_home: Path):
-        original_sv = supervise.bot_bottle_root
-        original_svt = sv_types.bot_bottle_root
-
-        def fake_root() -> Path:
-            return fake_home / ".bot-bottle"
-
-        supervise.bot_bottle_root = fake_root  # type: ignore[assignment]
-        sv_types.bot_bottle_root = fake_root  # type: ignore[assignment]
-
-        def restore() -> None:
-            supervise.bot_bottle_root = original_sv  # type: ignore[assignment]
-            sv_types.bot_bottle_root = original_svt  # type: ignore[assignment]
-
-        return restore
+        return use_bottle_root(fake_home / ".bot-bottle")

    def test_prepare_creates_queue(self):
        plan = _StubSupervise().prepare("dev", self.stage_dir)
@@ -12,7 +12,7 @@ from pathlib import Path
 from unittest.mock import patch

 from bot_bottle import supervise
-from bot_bottle import supervise_types as sv_types
+from tests.unit import use_bottle_root
 from bot_bottle.audit_store import AuditStore
 from bot_bottle.cli import supervise as supervise_cli
 from bot_bottle.queue_store import QueueStore
@@ -51,24 +51,11 @@ def _proposal(slug: str = "dev", tool: str = TOOL_EGRESS_ALLOW) -> Proposal:


 class _FakeHomeMixin:
-    """Patch supervise.bot_bottle_root to a temp dir for the test."""
+    """Point bot_bottle_root at a temp dir (via BOT_BOTTLE_ROOT) for the test."""

    def _setup_fake_home(self):
        self._tmp = tempfile.TemporaryDirectory(prefix="supervise-test.")
-        original_sv = supervise.bot_bottle_root
-        original_svt = sv_types.bot_bottle_root
-
-        def fake_root() -> Path:
-            return Path(self._tmp.name) / ".bot-bottle"
-
-        supervise.bot_bottle_root = fake_root  # type: ignore[assignment]
-        sv_types.bot_bottle_root = fake_root  # type: ignore[assignment]
-
-        def restore() -> None:
-            supervise.bot_bottle_root = original_sv  # type: ignore[assignment]
-            sv_types.bot_bottle_root = original_svt  # type: ignore[assignment]
-
-        self._restore_home = restore
+        self._restore_home = use_bottle_root(Path(self._tmp.name) / ".bot-bottle")
        QueueStore("").migrate()
        AuditStore().migrate()

@@ -11,12 +11,13 @@ from __future__ import annotations

 import contextlib
 import io
+import os
 import tempfile
 import unittest
 from pathlib import Path
 from unittest import mock

-from bot_bottle import supervise
+from tests.unit import use_bottle_root
 from bot_bottle.cli import supervise as supervise_cli
 from bot_bottle.log import Die, die

@@ -39,18 +40,16 @@ class TestDieCarriesMessage(unittest.TestCase):


 class _FakeHomeMixin:
-    """Point supervise.bot_bottle_root (what _write_crash_log resolves
-    through) at a temp dir so the crash log doesn't touch the real
-    ~/.bot-bottle."""
+    """Point bot_bottle_root (what _write_crash_log resolves through) at a
+    temp dir so the crash log doesn't touch the real ~/.bot-bottle."""

    def _setup_fake_home(self):
        self._tmp = tempfile.TemporaryDirectory(prefix="supervise-crash-test.")
-        self._orig_root = supervise.bot_bottle_root
        self._root = Path(self._tmp.name) / ".bot-bottle"
-        supervise.bot_bottle_root = lambda: self._root  # type: ignore[assignment]
+        self._restore_root = use_bottle_root(self._root)

    def _teardown_fake_home(self):
-        supervise.bot_bottle_root = self._orig_root  # type: ignore[assignment]
+        self._restore_root()
        self._tmp.cleanup()


@@ -127,11 +126,11 @@ class TestWriteCrashLog(_FakeHomeMixin, unittest.TestCase):
        # OSError and the helper must fall back to a tempfile.
        bad = Path(self._tmp.name) / "not-a-dir"
        bad.write_text("x")
-        supervise.bot_bottle_root = lambda: bad  # type: ignore[assignment]
-        try:
-            raise RuntimeError("explode2")
-        except RuntimeError as e:
-            path = supervise_cli._write_crash_log(e)
+        with mock.patch.dict(os.environ, {"BOT_BOTTLE_ROOT": str(bad)}):
+            try:
+                raise RuntimeError("explode2")
+            except RuntimeError as e:
+                path = supervise_cli._write_crash_log(e)
        self.assertTrue(path.exists())
        self.assertIn("explode2", path.read_text())

@@ -12,6 +12,7 @@ from unittest.mock import patch

 from bot_bottle import supervise
 from bot_bottle.audit_store import AuditStore
+from bot_bottle.paths import bot_bottle_root
 from bot_bottle.queue_store import QueueStore
 from bot_bottle.supervise import (
    AuditEntry,
@@ -39,7 +40,7 @@ def _proposal() -> Proposal:

 class TestPathHelpers(unittest.TestCase):
    def test_bot_bottle_root(self) -> None:
-        self.assertTrue(str(supervise.bot_bottle_root()).endswith(".bot-bottle"))
+        self.assertTrue(str(bot_bottle_root()).endswith(".bot-bottle"))


 class TestReadMalformed(unittest.TestCase):
@@ -10,6 +10,8 @@ import unittest
 from pathlib import Path
 from unittest.mock import patch

+from tests.unit import use_bottle_root
+

 # The server module loads `supervise` via same-directory import inside
 # the container (Dockerfile.supervise WORKDIRs into /app). For tests
@@ -19,10 +21,8 @@ sys.path.insert(0, str(Path(__file__).resolve().parent.parent.parent / "bot_bott
 import supervise as _sv  # noqa: E402  # type: ignore
 import queue_store as _qs  # noqa: E402  # type: ignore
 import audit_store as _as  # noqa: E402  # type: ignore
-import supervise_types as svt_flat  # noqa: E402  # type: ignore

 from bot_bottle import supervise_server  # noqa: E402
-from bot_bottle import supervise_types as svt_pkg  # noqa: E402
 from bot_bottle.supervise_server import (
    ERR_INTERNAL,
    ERR_INVALID_PARAMS,
@@ -279,23 +279,7 @@ class TestHandleToolsCall(unittest.TestCase):
        self._tmp.cleanup()

    def _patch_home(self, fake_home: Path):
-        original_sv = _sv.bot_bottle_root
-        original_flat = svt_flat.bot_bottle_root
-        original_pkg = svt_pkg.bot_bottle_root
-
-        def fake_root() -> Path:
-            return fake_home / ".bot-bottle"
-
-        _sv.bot_bottle_root = fake_root  # type: ignore[assignment]
-        svt_flat.bot_bottle_root = fake_root  # type: ignore[assignment]
-        svt_pkg.bot_bottle_root = fake_root  # type: ignore[assignment]
-
-        def restore() -> None:
-            _sv.bot_bottle_root = original_sv  # type: ignore[assignment]
-            svt_flat.bot_bottle_root = original_flat  # type: ignore[assignment]
-            svt_pkg.bot_bottle_root = original_pkg  # type: ignore[assignment]
-
-        return restore
+        return use_bottle_root(fake_home / ".bot-bottle")

    def _respond_when_proposal_appears(self, status: str, notes: str = "") -> threading.Thread:
        """Background thread: poll the queue for a fresh proposal, write a