docs: reposition README around provider-neutral secure substrate

Lead with the agnostic + security story instead of the single-user
security framing. New hero positions bot-bottle as a neutral control
plane that runs any agent (Claude, Codex, or a drop-in contrib plugin)
inside an isolation boundary the agent can't touch.

Restructure Features into three pillars — neutral substrate, isolation
boundary, host-matched isolation — promoting provider-agnosticism (PRD
0053 user plugins) from a buried bullet to a headline. No capability
claims changed; per-provider auth/image detail preserved as a note
linking to Manifest.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YcU7nerbg8cVj9R4EkpfLJ

README.md

@@ -8,25 +8,40 @@
 [![pylint](https://img.shields.io/badge/pylint-9.93%2F10-brightgreen)](https://github.com/PyCQA/pylint)
 [![pyright](https://img.shields.io/badge/pyright-0%20errors-brightgreen)](https://github.com/microsoft/pyright)
 
-**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.
+**Run any coding agent like it might be compromised — and lose nothing when it is.**
 
-**Solution:** Ephemeral, per agent "bottles" the agent cannot modify that scan all traffic for data exfiltration and limit capabilities and egress to only what the agent needs.
+bot-bottle is a provider-neutral, security-first substrate for autonomous agents. Bring Claude Code, Codex, or your own harness; each one runs in an ephemeral, per-agent "bottle" it cannot modify, where every byte of egress is scanned for exfiltration and capabilities are narrowed to exactly what the task declares.
 
-## Features
+**Problem:** You want to let a coding agent run unsupervised, but a prompt-injected or misbehaving agent — or a poisoned repo, MCP server, or skill — can wreck your environment or exfiltrate your secrets. Locking yourself to one vendor's cloud doesn't fix that; it just moves the blast radius.
+
+**Solution:** A neutral control plane that runs *whatever agent you choose* inside an isolation boundary the agent can't touch: TLS-bumped egress allowlisting, outbound/inbound DLP, gitleaks-gated pushes, and host secrets the agent never sees. Swap the agent; keep the guarantees.
+
+## Why bot-bottle
+
+### A neutral substrate — bring your own agent
+
+- **Provider-agnostic by design** — Claude and Codex ship built in; any other agent (Gemini, Aider, a local-model wrapper) is a drop-in plugin at `~/.bot-bottle/contrib/<name>/` — no fork, no PR against this repo. The manifest accepts any provider template, and the isolation, egress, and git guarantees are identical across all of them.
+- **One control plane, every harness** — the same bottle, egress policy, and supervise flow wrap whichever agent you run, so switching or mixing providers doesn't change your security posture.
+- **Composable bottles (`extends:`)** — keep provider/runtime policy in one base bottle (e.g. `claude.md`) and overlay task bottles on top.
+
+### An isolation boundary the agent can't touch
 
 - **Per-bottle egress allowlist** — TLS-bumped HTTP/HTTPS chokepoint with a per-manifest host allowlist; per-route path/method/header `matches` filtering; outbound DLP scanning for known tokens and secrets, inbound DLP scanning for prompt-injection attempts; DoH and arbitrary hosts blocked by default.
 - **Tokens the agent never sees** — host secrets live in a sidecar; the agent dials `http://sidecar:9099/<path>` and the proxy strips inbound `Authorization` and injects the real token before forwarding. `printenv` in the agent shows proxy URLs only.
 - **Gitleaks-scanned push (git-gate)** — `bottle.git` remotes route through a per-bottle `git daemon` that gitleaks-scans incoming refs pre-receive and forwards clean refs upstream over SSH. The agent never holds the upstream credential.
 - **Manifest-scoped skills + secrets** — each bottle declares its skills, env, git identity, remotes, and egress routes; unknown keys die at load.
 - **Trust boundary at `$HOME`** — bottles (credentials, egress, remotes) live only under `~/.bot-bottle/bottles/`. Repos may ship agents but not bottles, so a cloned repo can't redirect an env var to an attacker host.
-- **Composable bottles (`extends:`)** — keep provider/runtime policy in one base bottle (e.g. `claude.md`) and overlay task bottles on top.
+
+### Isolation that matches your host
+
 - **Parallel, isolated bottles** — each bottle runs in its own backend-owned isolation boundary; bottles don't share state or talk to each other.
-- **Provider templates (Claude, Codex)** — `Dockerfile.claude` / `Dockerfile.codex`, or a bottle-supplied Dockerfile. Claude auth via long-lived OAuth token; Codex via opt-in host device-auth forwarding.
 - **gVisor auto-detect** — on Linux hosts where `runsc` is registered with Docker, every bottle launches under it for a userspace syscall barrier; no manifest config required.
 - **Apple Container backend (macOS default when available)** — runs the agent and sidecar bundle with Apple's `container` CLI, using a host-only agent network plus a separate sidecar egress network.
 - **Smolmachines backend** — runs the agent in a libkrun micro-VM while the sidecar bundle stays in Docker. TSI and smolmachines DNS filtering close the raw DNS exfiltration gap that exists in the legacy Docker backend.
 - **Legacy Docker backend** — still available for examples, CI, and hosts without Apple Container via `BOT_BOTTLE_BACKEND=docker` or `--backend=docker`.
 
+Per-provider auth (Claude long-lived OAuth token; Codex opt-in host device-auth forwarding) and per-provider images (`Dockerfile.claude` / `Dockerfile.codex`, or a bottle-supplied Dockerfile) are configured on the bottle — see [Manifest](#manifest).
+
 ## Architecture
 
 On the default macOS Apple Container backend, a bottle is an agent container on a host-only internal network plus a sidecar bundle attached to both that internal network and a NAT egress network. The agent gets HTTP(S)_PROXY and CA bundle env vars pointing at the sidecar's internal-network IP, so HTTP/HTTPS traffic flows through the sidecar instead of direct egress. `bottle.git` / git-gate is intentionally deferred on this backend until a safe Apple Container key-delivery path exists.
@@ -68,6 +83,27 @@ The Docker topology looks like this:
 
 When the agent exits, `cli.py` tears down every sidecar and both networks; nothing about a bottle persists between runs.
 
+## Install
+
+Install the CLI with the bootstrap script:
+
+```sh
+curl -fsSL https://gitea.dideric.is/didericis/bot-bottle/raw/branch/main/install.sh | sh
+```
+
+The script checks Python 3.11+, checks Docker daemon reachability, creates the `~/.bot-bottle/` config directories, installs the Python package with `pipx` when available or `pip --user` otherwise, then runs:
+
+```sh
+bot-bottle doctor
+```
+
+Python-native installers can use the package metadata directly:
+
+```sh
+pipx install git+https://gitea.dideric.is/didericis/bot-bottle.git
+uv tool install git+https://gitea.dideric.is/didericis/bot-bottle.git
+```
+
 ## Quickstart
 
 On compatible macOS hosts, the default backend requires Apple's `container` CLI and does not require Docker. The smolmachines backend requires Docker on the host for the sidecar bundle plus smolvm. The legacy Docker backend requires Docker. Claude bottles also need a long-lived Claude Code OAuth token (`claude setup-token`) exported as `BOT_BOTTLE_CLAUDE_OAUTH_TOKEN`.

bot_bottle/Dockerfile.sidecars

@@ -0,0 +1,96 @@
+# Per-bottle sidecar bundle image (PRD 0024).
+#
+# Collapses the prior per-sidecar images (egress, git-gate,
+# supervise) into one. A small stdlib-Python init supervisor at
+# /app/sidecar_init.py spawns all daemons, forwards SIGTERM, and
+# propagates per-daemon stdout/stderr to the container log with a
+# `[name]` prefix. See PRD 0024 for the rationale.
+#
+# Layout:
+#
+#   /usr/bin/gitleaks                    gitleaks binary
+#   /app/egress_addon.py + siblings      mitmproxy addon (egress)
+#   /app/egress-entrypoint.sh            mitmdump launcher
+#   /app/supervise_server.py + .py       supervise MCP server
+#   /app/sidecar_init.py                 PID 1 supervisor
+#   /etc/egress/routes.yaml              bind-mounted at run time
+#   /etc/git-gate/pre-receive            docker-cp'd at start time
+#   /git-gate-entrypoint.sh              docker-cp'd at start time
+#   /git-gate/creds/*                    docker-cp'd at start time
+#   /git/*                               bare repos, populated at runtime
+#   /run/supervise/queue/                bind-mounted at run time
+#   /home/mitmproxy/.mitmproxy/          mitmproxy CA dir
+#
+# Exposed ports inside the container:
+#   9099  egress (mitmproxy, agent-facing HTTPS proxy)
+#   9418  git-gate (git-daemon)
+#   9420  git-gate smart HTTP (smolmachines agent-facing transport)
+#   9100  supervise (MCP HTTP)
+
+# Stage 1: gitleaks binary. The upstream gitleaks image is alpine
+# with the binary at /usr/bin/gitleaks. Pinned by digest in lockstep
+# with Dockerfile.git-gate's prior base (now deleted at chunk 3).
+FROM zricethezav/gitleaks@sha256:c00b6bd0aeb3071cbcb79009cb16a60dd9e0a7c60e2be9ab65d25e6bc8abbb7f AS gitleaks-src
+
+# Stage 2: assembly. mitmproxy/mitmproxy is debian-slim-based with
+# Python + mitmdump pre-installed — heavier than the others, so
+# this stage starts there and pulls the standalone binaries in.
+FROM mitmproxy/mitmproxy:11.1.3
+
+# Run as root inside the bundle. The bundle is the isolation
+# boundary; per-daemon user separation inside it is not load-bearing
+# and complicates the supervisor's spawn path.
+USER root
+
+# Runtime system deps:
+#   git supplies the `git daemon` subcommand (no separate package)
+#     plus the core `git` binary the pre-receive hook invokes.
+#   openssh-client supplies the upstream SSH transport the
+#     pre-receive hook uses to forward accepted refs.
+#   ca-certificates is needed for mitmdump upstream TLS (the
+#     base image already has it; listed for explicitness).
+RUN apt-get update \
+ && apt-get install -y --no-install-recommends \
+      git openssh-client ca-certificates \
+ && rm -rf /var/lib/apt/lists/*
+
+# Pull the standalone binaries into the final image.
+COPY --from=gitleaks-src /usr/bin/gitleaks /usr/bin/gitleaks
+
+# Project Python: addon + server modules + the init supervisor.
+# Kept flat under /app/ so mitmdump's loader resolves them as
+# top-level siblings (absolute imports), matching the prior
+# Dockerfile.egress / Dockerfile.supervise layout.
+COPY bot_bottle/egress_addon_core.py /app/egress_addon_core.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/supervise.py         /app/supervise.py
+COPY bot_bottle/supervise_server.py  /app/supervise_server.py
+COPY bot_bottle/sidecar_init.py      /app/sidecar_init.py
+COPY bot_bottle/git_http_backend.py  /app/git_http_backend.py
+COPY bot_bottle/egress_entrypoint.sh /app/egress-entrypoint.sh
+RUN chmod +x /app/egress-entrypoint.sh
+
+# Pre-create runtime directories the compose renderer + start
+# step expect to exist. `docker cp` does not create intermediate
+# dirs, and bind mounts won't either if the parent is missing.
+RUN mkdir -p \
+      /etc/egress \
+      /etc/git-gate \
+      /git-gate/creds \
+      /git \
+      /run/supervise/queue \
+      /home/mitmproxy/.mitmproxy
+
+# Documentation only — the compose renderer publishes whichever
+# subset the bottle uses.
+EXPOSE 8888 9099 9418 9420 9100
+
+# WORKDIR matches Dockerfile.supervise's prior layout so the
+# in-app same-dir import in supervise_server.py stays deterministic.
+WORKDIR /app
+
+# PID 1 is the supervisor. It owns signal handling and exit-code
+# propagation; no `exec` chain in the entrypoint itself.
+ENTRYPOINT ["python3", "/app/sidecar_init.py"]

bot_bottle/backend/docker/compose.py

@@ -58,10 +58,17 @@ from .sidecar_bundle import (
 )
 
 
-# Repo root, used as the build context for the bundle Dockerfile.
+# Repo root or installed site-packages root, used as the build context for
+# Dockerfiles that COPY bot_bottle source files.
 _REPO_DIR = str(Path(__file__).resolve().parent.parent.parent.parent)
 
 
+def _sidecar_bundle_dockerfile() -> str:
+    if (Path(_REPO_DIR) / SIDECAR_BUNDLE_DOCKERFILE).is_file():
+        return SIDECAR_BUNDLE_DOCKERFILE
+    return f"bot_bottle/{SIDECAR_BUNDLE_DOCKERFILE}"
+
+
 def bottle_plan_to_compose(plan: DockerBottlePlan) -> dict[str, Any]:
     """Render a Compose v2 spec dict from a fully-resolved
     DockerBottlePlan.
@@ -183,7 +190,7 @@ def _sidecar_bundle_service(plan: DockerBottlePlan) -> dict[str, Any]:
         "image": SIDECAR_BUNDLE_IMAGE,
         "build": {
             "context": _REPO_DIR,
-            "dockerfile": SIDECAR_BUNDLE_DOCKERFILE,
+            "dockerfile": _sidecar_bundle_dockerfile(),
         },
         "container_name": sidecar_bundle_container_name(plan.slug),
         "networks": {

bot_bottle/backend/docker/sidecar_bundle.py

@@ -12,9 +12,10 @@ from __future__ import annotations
 import os
 
 
-# Bundle image. Defaults to a built-locally tag (built from the
+# Bundle image. Defaults to a built-locally tag. Source checkouts
-# repo's Dockerfile.sidecars via compose `build:`). Operators
+# build from the repo-root Dockerfile.sidecars; installed packages
-# pinning to a published digest can override via env.
+# build from the packaged copy under bot_bottle/.
+# Operators pinning to a published digest can override via env.
 SIDECAR_BUNDLE_IMAGE = os.environ.get(
     "BOT_BOTTLE_SIDECAR_IMAGE",
     "bot-bottle-sidecars:latest",

bot_bottle/cli/__init__.py

@@ -1,6 +1,6 @@
 """Main CLI dispatcher.
 
-Commands: cleanup, commit, edit, info, init, list, resume, start, supervise
+Commands: cleanup, commit, doctor, edit, info, init, list, resume, start, supervise
 """
 
 from __future__ import annotations
@@ -13,6 +13,7 @@ from ._common import PROG
 from . import list as _list_mod
 from .cleanup import cmd_cleanup
 from .commit import cmd_commit
+from .doctor import cmd_doctor
 from .edit import cmd_edit
 from .info import cmd_info
 from .init import cmd_init
@@ -25,6 +26,7 @@ cmd_list = _list_mod.cmd_list
 COMMANDS = {
     "cleanup": cmd_cleanup,
     "commit": cmd_commit,
+    "doctor": cmd_doctor,
     "edit": cmd_edit,
     "info": cmd_info,
     "init": cmd_init,
@@ -40,6 +42,7 @@ def usage() -> None:
     sys.stderr.write("Commands:\n")
     sys.stderr.write("  cleanup   stop and remove all active bot-bottle containers\n")
     sys.stderr.write("  commit    snapshot a running bottle's container state to a Docker image\n")
+    sys.stderr.write("  doctor    check Python, Docker, and bot-bottle config prerequisites\n")
     sys.stderr.write("  edit      open an agent in vim for editing\n")
     sys.stderr.write("  info      print env, skills, and prompt details for a named agent\n")
     sys.stderr.write("  init      interactively create a new agent and add it to bot-bottle.json\n")

bot_bottle/cli/_common.py

@@ -6,7 +6,7 @@ import os
 import sys
 from pathlib import Path
 
-PROG = "cli.py"
+PROG = Path(sys.argv[0]).name or "bot-bottle"
 USER_CWD = os.getcwd()
 REPO_DIR = str(Path(__file__).resolve().parent.parent.parent)
 

bot_bottle/cli/doctor.py

@@ -0,0 +1,73 @@
+"""doctor: validate host prerequisites for running bot-bottle."""
+
+from __future__ import annotations
+
+import argparse
+import shutil
+import subprocess
+import sys
+from pathlib import Path
+
+from ._common import PROG
+
+
+def _ok(label: str, detail: str) -> None:
+    print(f"ok: {label}: {detail}")
+
+
+def _fail(label: str, detail: str) -> None:
+    print(f"fail: {label}: {detail}")
+
+
+def _check_python() -> bool:
+    version = sys.version_info
+    detail = f"{version.major}.{version.minor}.{version.micro}"
+    if version >= (3, 11):
+        _ok("python", detail)
+        return True
+    _fail("python", f"{detail}; need 3.11 or newer")
+    return False
+
+
+def _check_docker() -> bool:
+    docker = shutil.which("docker")
+    if not docker:
+        _fail("docker", "docker command not found")
+        return False
+    try:
+        result = subprocess.run(
+            [docker, "info"],
+            stdout=subprocess.DEVNULL,
+            stderr=subprocess.DEVNULL,
+            check=False,
+            timeout=10,
+        )
+    except (OSError, subprocess.TimeoutExpired) as exc:
+        _fail("docker", f"daemon check failed: {exc}")
+        return False
+    if result.returncode == 0:
+        _ok("docker", "daemon reachable")
+        return True
+    _fail("docker", "daemon not reachable")
+    return False
+
+
+def _check_config_dir() -> bool:
+    config = Path.home() / ".bot-bottle"
+    if config.is_dir():
+        _ok("config", str(config))
+        return True
+    _fail("config", f"{config} does not exist")
+    return False
+
+
+def cmd_doctor(argv: list[str]) -> int:
+    parser = argparse.ArgumentParser(prog=f"{PROG} doctor", add_help=True)
+    parser.parse_args(argv)
+
+    checks = (
+        _check_python(),
+        _check_docker(),
+        _check_config_dir(),
+    )
+    return 0 if all(checks) else 1

docs/prds/prd-new-install-script.md

@@ -0,0 +1,75 @@
+# PRD prd-new: Install script
+
+- **Status:** Active
+- **Author:** didericis
+- **Created:** 2026-06-06
+- **Issue:** #197
+
+## Summary
+
+Add a proper Python package distribution and a thin `install.sh` bootstrapper so users can install bot-bottle with a single command without cloning the repo.
+
+## Problem
+
+There is currently no install path for new users. The only way to run bot-bottle is to clone the repo and invoke `cli.py` directly. This blocks any HN-style public demo: readers want `curl | sh` or `pipx install`, not a manual clone-and-configure flow.
+
+## Goals / Success Criteria
+
+- `curl -fsSL <url>/install.sh | sh` (or equivalent) leaves a working `bot-bottle` command on PATH.
+- Python-native users can install with `pipx install bot-bottle` or `uv tool install bot-bottle`.
+- `install.sh` validates prerequisites (Python ≥ 3.11, Docker) and exits with a clear message if they are missing. It does not silently install Docker.
+- `install.sh` runs `bot-bottle doctor` (or equivalent diagnostic) after install to confirm the environment is ready.
+- The package has no runtime pip dependencies (stdlib-only, matching the existing constraint).
+
+## Non-goals
+
+- Bundling a Python runtime or producing a standalone binary.
+- Automatic Docker installation.
+- Plugin architecture changes (out of scope; see issue #197 for future direction).
+- Publishing to PyPI in this PR — the package structure is the deliverable; publishing is a separate step.
+
+## Design
+
+### Package structure
+
+Add a minimal `pyproject.toml` at the repo root:
+
+```toml
+[project]
+name = "bot-bottle"
+version = "0.1.0"
+requires-python = ">=3.11"
+dependencies = []
+
+[project.scripts]
+bot-bottle = "bot_bottle.cli:main"
+```
+
+The existing `bot_bottle/` package and `cli.py` entry point already contain the logic; this just wires up the standard entry point. `cli.py` may need a small refactor to expose a `main()` callable if it uses `if __name__ == "__main__"` only.
+
+### `install.sh`
+
+A thin bootstrapper that:
+
+1. Checks `python3 --version` ≥ 3.11; exits with instructions if not met.
+2. Checks `docker info` exits 0; exits with instructions if Docker is not running.
+3. Installs via `pipx` if available, otherwise falls back to `pip install --user`.
+4. Runs `bot-bottle doctor` to verify the install.
+
+The script must be idempotent (safe to re-run) and must not require `sudo`.
+
+### `bot-bottle doctor`
+
+A new subcommand that checks and reports:
+
+- Python version.
+- Docker daemon reachability.
+- Whether `~/.bot-bottle/` config directory exists.
+
+Exits 0 if all checks pass, non-zero otherwise.
+
+## Decisions
+
+- `install.sh` is hosted from the repo's raw Gitea URL for now:
+  `https://gitea.dideric.is/didericis/bot-bottle/raw/branch/main/install.sh`.
+- Should `version` in `pyproject.toml` be driven by a git tag at build time (e.g. via `hatch-vcs`) or kept as a static string? Static is simpler for now.

install.sh

@@ -0,0 +1,50 @@
+#!/bin/sh
+set -eu
+
+PACKAGE_SPEC="${BOT_BOTTLE_INSTALL_SPEC:-git+https://gitea.dideric.is/didericis/bot-bottle.git}"
+MIN_PYTHON="3.11"
+
+say() {
+    printf 'bot-bottle install: %s\n' "$*" >&2
+}
+
+die() {
+    say "error: $*"
+    exit 1
+}
+
+command -v python3 >/dev/null 2>&1 || die "python3 is required (version ${MIN_PYTHON} or newer)"
+
+python3 - <<'PY' || die "python3 3.11 or newer is required"
+import sys
+
+raise SystemExit(0 if sys.version_info >= (3, 11) else 1)
+PY
+
+command -v docker >/dev/null 2>&1 || die "Docker is required; install Docker and start the daemon, then re-run this script"
+docker info >/dev/null 2>&1 || die "Docker is installed but the daemon is not reachable; start Docker and re-run this script"
+
+mkdir -p \
+    "${HOME}/.bot-bottle/agents" \
+    "${HOME}/.bot-bottle/bottles" \
+    "${HOME}/.bot-bottle/contrib"
+
+if command -v pipx >/dev/null 2>&1; then
+    say "installing with pipx"
+    pipx install --force "${PACKAGE_SPEC}"
+else
+    say "pipx not found; installing with python3 -m pip --user"
+    python3 -m pip install --user --upgrade "${PACKAGE_SPEC}"
+fi
+
+if command -v bot-bottle >/dev/null 2>&1; then
+    BOT_BOTTLE_BIN="bot-bottle"
+elif [ -x "${HOME}/.local/bin/bot-bottle" ]; then
+    BOT_BOTTLE_BIN="${HOME}/.local/bin/bot-bottle"
+    say "using ${BOT_BOTTLE_BIN}; add ${HOME}/.local/bin to PATH for future shells"
+else
+    die "bot-bottle was installed but is not on PATH"
+fi
+
+say "running bot-bottle doctor"
+"${BOT_BOTTLE_BIN}" doctor

pyproject.toml

@@ -0,0 +1,27 @@
+[build-system]
+requires = ["setuptools>=68"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "bot-bottle"
+version = "0.1.0"
+description = "Self-hosted sandbox for AI coding agents with egress controls"
+readme = "README.md"
+requires-python = ">=3.11"
+license = { text = "Apache-2.0" }
+dependencies = []
+
+[project.scripts]
+bot-bottle = "bot_bottle.cli:main"
+
+[tool.setuptools.packages.find]
+include = ["bot_bottle*"]
+
+[tool.setuptools.package-data]
+bot_bottle = [
+    "Dockerfile.sidecars",
+    "egress_entrypoint.sh",
+    "contrib/claude/Dockerfile",
+    "contrib/codex/Dockerfile",
+    "contrib/pi/Dockerfile",
+]

tests/unit/test_cli_doctor.py

@@ -0,0 +1,51 @@
+"""Unit: `bot-bottle doctor` host prerequisite checks."""
+
+from __future__ import annotations
+
+import tempfile
+import unittest
+from pathlib import Path
+from unittest.mock import MagicMock, patch
+
+from bot_bottle.cli import doctor
+
+
+class TestDoctor(unittest.TestCase):
+    def test_success_when_prerequisites_present(self):
+        with tempfile.TemporaryDirectory() as tmp, patch.object(
+            doctor.Path, "home", return_value=Path(tmp),
+        ), patch.object(
+            doctor.shutil, "which", return_value="/usr/bin/docker",
+        ), patch.object(
+            doctor.subprocess, "run",
+            return_value=MagicMock(returncode=0),
+        ):
+            Path(tmp, ".bot-bottle").mkdir()
+            self.assertEqual(0, doctor.cmd_doctor([]))
+
+    def test_missing_config_fails(self):
+        with tempfile.TemporaryDirectory() as tmp, patch.object(
+            doctor.Path, "home", return_value=Path(tmp),
+        ), patch.object(
+            doctor.shutil, "which", return_value="/usr/bin/docker",
+        ), patch.object(
+            doctor.subprocess, "run",
+            return_value=MagicMock(returncode=0),
+        ):
+            self.assertEqual(1, doctor.cmd_doctor([]))
+
+    def test_missing_docker_fails_before_daemon_check(self):
+        with tempfile.TemporaryDirectory() as tmp, patch.object(
+            doctor.Path, "home", return_value=Path(tmp),
+        ), patch.object(
+            doctor.shutil, "which", return_value=None,
+        ), patch.object(
+            doctor.subprocess, "run",
+        ) as run:
+            Path(tmp, ".bot-bottle").mkdir()
+            self.assertEqual(1, doctor.cmd_doctor([]))
+            run.assert_not_called()
+
+
+if __name__ == "__main__":
+    unittest.main()

tests/unit/test_compose.py

@@ -301,6 +301,19 @@ class TestSidecarBundleShape(unittest.TestCase):
         self.assertEqual("bot-bottle-sidecars:latest", sc["image"])
         self.assertEqual("Dockerfile.sidecars", sc["build"]["dockerfile"])
 
+    def test_bundle_uses_packaged_dockerfile_when_root_missing(self):
+        from bot_bottle.backend.docker import compose as compose_mod
+
+        original = compose_mod._REPO_DIR
+        try:
+            compose_mod._REPO_DIR = "/tmp/does-not-exist"
+            self.assertEqual(
+                "bot_bottle/Dockerfile.sidecars",
+                compose_mod._sidecar_bundle_dockerfile(),
+            )
+        finally:
+            compose_mod._REPO_DIR = original
+
     def test_bundle_container_name_uses_sidecars_prefix(self):
         sc = self._render()["services"]["sidecars"]
         self.assertEqual(f"bot-bottle-sidecars-{SLUG}", sc["container_name"])

tests/unit/test_install_script.py

@@ -0,0 +1,34 @@
+"""Unit: install.sh static contract checks."""
+
+from __future__ import annotations
+
+import subprocess
+import unittest
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[2]
+
+
+class TestInstallScript(unittest.TestCase):
+    def test_shell_syntax(self):
+        result = subprocess.run(
+            ["sh", "-n", str(ROOT / "install.sh")],
+            check=False,
+            capture_output=True,
+            text=True,
+        )
+        self.assertEqual("", result.stderr)
+        self.assertEqual(0, result.returncode)
+
+    def test_contract_phrases(self):
+        script = (ROOT / "install.sh").read_text(encoding="utf-8")
+        self.assertIn("python3", script)
+        self.assertIn("docker info", script)
+        self.assertIn("pipx install --force", script)
+        self.assertIn("pip install --user --upgrade", script)
+        self.assertIn('"${BOT_BOTTLE_BIN}" doctor', script)
+
+
+if __name__ == "__main__":
+    unittest.main()

tests/unit/test_pyproject.py

@@ -0,0 +1,27 @@
+"""Unit: Python package metadata for install script PRD."""
+
+from __future__ import annotations
+
+import tomllib
+import unittest
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[2]
+
+
+class TestPyproject(unittest.TestCase):
+    def test_console_script_and_no_runtime_dependencies(self):
+        data = tomllib.loads((ROOT / "pyproject.toml").read_text(encoding="utf-8"))
+        project = data["project"]
+        self.assertEqual("bot-bottle", project["name"])
+        self.assertEqual(">=3.11", project["requires-python"])
+        self.assertEqual([], project["dependencies"])
+        self.assertEqual(
+            "bot_bottle.cli:main",
+            project["scripts"]["bot-bottle"],
+        )
+
+
+if __name__ == "__main__":
+    unittest.main()