compose: add wrapper-first dogfood workspace (#1487)

Co-authored-by: marcie <[email protected]>

.env.example

@@ -1,156 +1,14 @@
-# ─────────────────────────────────────────────────────────────────────────────
-# Mosaic — Environment Variables Reference
-# Copy this file to .env and fill in the values for your deployment.
-# Lines beginning with # are comments; optional vars are commented out.
-# ─────────────────────────────────────────────────────────────────────────────
+# Mosaic Stack standalone deployment (compose `stack` profile)
+# Copy to .env and adjust. Port overrides exist because the defaults
+# collide with common host services (and with the dev compose itself).
+PG_HOST_PORT=5433
+VALKEY_HOST_PORT=6380
+GATEWAY_HOST_PORT=14242
+# Registry image override (defaults to a local build of docker/gateway.Dockerfile):
+# GATEWAY_IMAGE=git.mosaicstack.dev/mosaicstack/stack/gateway:sha-acf640d
 
-
-# ─── Database (PostgreSQL 17 + pgvector) ─────────────────────────────────────
-# Full connection string used by the gateway, ORM, and migration runner.
-# Port 5433 avoids conflict with a host-side PostgreSQL instance.
-DATABASE_URL=postgresql://mosaic:mosaic@localhost:5433/mosaic
-
-# Docker Compose host-port override for the PostgreSQL container (default: 5433)
-# PG_HOST_PORT=5433
-
-
-# ─── Queue (Valkey 8 / Redis-compatible) ─────────────────────────────────────
-# Port 6380 avoids conflict with a host-side Redis/Valkey instance.
-VALKEY_URL=redis://localhost:6380
-
-# Docker Compose host-port override for the Valkey container (default: 6380)
-# VALKEY_HOST_PORT=6380
-
-
-# ─── Gateway ─────────────────────────────────────────────────────────────────
-# TCP port the NestJS/Fastify gateway listens on (default: 14242)
-GATEWAY_PORT=14242
-
-# Comma-separated list of allowed CORS origins.
-# Must include the web app origin in production.
-GATEWAY_CORS_ORIGIN=http://localhost:3000
-
-
-# ─── Auth (BetterAuth) ───────────────────────────────────────────────────────
-# REQUIRED — random secret used to sign sessions and tokens.
-# Generate with: openssl rand -base64 32
-BETTER_AUTH_SECRET=change-me-to-a-random-32-char-string
-
-# Public base URL of the gateway (used by BetterAuth for callback URLs)
-BETTER_AUTH_URL=http://localhost:14242
-
-
-# ─── Web App (SPA) ───────────────────────────────────────────────────────────
-# Directory holding the built SPA bundle (vite build output). When set, the
-# gateway serves the SPA same-origin; when unset (dev), run the Vite dev
-# server (pnpm --filter @mosaicstack/web dev), which proxies to the gateway.
-# safe-default: unset in dev — SPA serving is an opt-in production concern
-#WEB_DIST_DIR=apps/web/dist
-
-
-# ─── OpenTelemetry ───────────────────────────────────────────────────────────
-# OTLP HTTP endpoint (otel-collector or any OpenTelemetry-compatible backend)
-OTEL_EXPORTER_OTLP_ENDPOINT=http://localhost:4318
-
-# Service name shown in traces
-OTEL_SERVICE_NAME=mosaic-gateway
-
-
-# ─── AI Providers ────────────────────────────────────────────────────────────
-
-# Ollama (local models — set OLLAMA_BASE_URL to enable)
-# OLLAMA_BASE_URL=http://localhost:11434
-# OLLAMA_HOST is a legacy alias for OLLAMA_BASE_URL
-# OLLAMA_HOST=http://localhost:11434
-# Comma-separated list of Ollama model IDs to register (default: llama3.2,codellama,mistral)
-# OLLAMA_MODELS=llama3.2,codellama,mistral
-
-# Anthropic (claude-sonnet-4-6, claude-opus-4-6, claude-haiku-4-5)
-# ANTHROPIC_API_KEY=sk-ant-...
-
-# OpenAI (gpt-4o, gpt-4o-mini, o3-mini)
-# OPENAI_API_KEY=sk-...
-
-# Z.ai / GLM (glm-4.5, glm-4.5-air, glm-4.5-flash)
-# ZAI_API_KEY=...
-
-# Custom providers — JSON array of provider configs
-# Format: [{"id":"<id>","baseUrl":"<url>","apiKey":"<key>","models":[{"id":"<model-id>","name":"<label>"}]}]
-# MOSAIC_CUSTOM_PROVIDERS=
-
-
-# ─── Embedding Service ───────────────────────────────────────────────────────
-# OpenAI-compatible embeddings endpoint (default: OpenAI)
-# EMBEDDING_API_URL=https://api.openai.com/v1
-# EMBEDDING_MODEL=text-embedding-3-small
-
-
-# ─── Log Summarization Service ───────────────────────────────────────────────
-# OpenAI-compatible chat completions endpoint for log summarization (default: OpenAI)
-# SUMMARIZATION_API_URL=https://api.openai.com/v1
-# SUMMARIZATION_MODEL=gpt-4o-mini
-
-# Cron schedule for summarization job (default: every 6 hours)
-# SUMMARIZATION_CRON=0 */6 * * *
-
-# Cron schedule for log tier management (default: daily at 03:00)
-# TIER_MANAGEMENT_CRON=0 3 * * *
-
-
-# ─── Agent ───────────────────────────────────────────────────────────────────
-# Filesystem sandbox root for agent file tools (default: process.cwd())
-# AGENT_FILE_SANDBOX_DIR=/var/lib/mosaic/sandbox
-
-# Comma-separated list of tool names available to non-admin users.
-# Leave unset to allow all tools for all authenticated users.
-# AGENT_USER_TOOLS=read_file,list_directory,search_files
-
-# System prompt injected into every agent session (optional)
-# AGENT_SYSTEM_PROMPT=You are a helpful assistant.
-
-
-# ─── MCP Servers ─────────────────────────────────────────────────────────────
-# JSON array of MCP server configs — set to enable MCP tool integration.
-# Each entry: {"name":"<id>","url":"<http-or-sse-url>"}
-# MCP_SERVERS=[{"name":"my-mcp","url":"http://localhost:3100/sse"}]
-
-
-# ─── Coordinator ─────────────────────────────────────────────────────────────
-# Root directory used to scope coordinator (worktree/repo) operations.
-# Defaults to the monorepo root auto-detected from process.cwd().
-# MOSAIC_WORKSPACE_ROOT=/home/user/projects/mosaic
-
-
-# ─── Discord Plugin (optional — set DISCORD_BOT_TOKEN to enable) ─────────────
-# DISCORD_BOT_TOKEN=
-# DISCORD_GUILD_ID=
-# DISCORD_GATEWAY_URL=http://localhost:14242
-
-
-# ─── Telegram Plugin (optional — set TELEGRAM_BOT_TOKEN to enable) ───────────
-# TELEGRAM_BOT_TOKEN=
-# TELEGRAM_GATEWAY_URL=http://localhost:14242
-
-
-# ─── SSO Providers (add credentials to enable) ───────────────────────────────
-
-# --- Authentik (optional — set AUTHENTIK_CLIENT_ID to enable) ---
-# AUTHENTIK_ISSUER=https://auth.example.com/application/o/mosaic/
-# AUTHENTIK_CLIENT_ID=
-# AUTHENTIK_CLIENT_SECRET=
-
-# --- WorkOS (optional — set WORKOS_CLIENT_ID to enable) ---
-# WORKOS_ISSUER=https://your-company.authkit.app
-# WORKOS_CLIENT_ID=client_...
-# WORKOS_CLIENT_SECRET=sk_live_...
-
-# --- Keycloak (optional — set KEYCLOAK_CLIENT_ID to enable) ---
-# KEYCLOAK_ISSUER=https://auth.example.com/realms/master
-# Legacy alternative if you prefer to compose the issuer from separate vars:
-# KEYCLOAK_URL=https://auth.example.com
-# KEYCLOAK_REALM=master
-# KEYCLOAK_CLIENT_ID=mosaic
-# KEYCLOAK_CLIENT_SECRET=
-
-# The web login page discovers configured providers dynamically from
-# GET /api/sso/providers. No NEXT_PUBLIC_* provider feature flag is required.
+# Optional explicit dogfood overlay (docker-compose.dogfood.yml).
+# Both paths are required when that overlay is used. Use a dedicated next-based
+# worktree and the external home of the unprivileged stack-dogfood seat.
+# MOSAIC_DOGFOOD_WORKTREE=/home/example/src/mosaic-stack-worktrees/dogfood-1487
+# MOSAIC_DOGFOOD_SEAT_HOME=/home/example/.mosaic/fleet/agents/stack-dogfood

README.md

@@ -208,6 +208,46 @@ mosaic telemetry upload        # Dry-run unless opted in
 
 Consent state is persisted in config. Remote upload is a no-op until you run `mosaic telemetry opt-in`.
 
+## Standalone container deployment
+
+The `stack` profile runs PostgreSQL, Valkey, the gateway, and the bundled webUI. Copy
+`.env.example` to `.env`, generate `BETTER_AUTH_SECRET`, then start the profile:
+
+```bash
+cp .env.example .env
+printf 'BETTER_AUTH_SECRET=%s\n' "$(openssl rand -hex 32)" >> .env
+docker compose --profile stack up -d
+```
+
+The optional dogfood overlay gives one dedicated in-stack agent a writable stack
+worktree and its own read-only credential slot. It does not mount the fleet brain or
+any other seat. Prepare a `next`-based worktree and an unprivileged `stack-dogfood`
+seat outside the container, then set these paths in `.env`:
+
+```dotenv
+MOSAIC_DOGFOOD_WORKTREE=/path/to/mosaic-stack-worktrees/dogfood-1487
+MOSAIC_DOGFOOD_SEAT_HOME=/path/to/.mosaic/fleet/agents/stack-dogfood
+```
+
+The seat home must contain only that seat's credential at
+`secrets/gitea-mosaicstack-stack-dogfood.token`. Never place the token value in
+`.env`. Start the overlay with:
+
+```bash
+docker compose \
+  -f docker-compose.yml \
+  -f docker-compose.dogfood.yml \
+  --profile stack up -d
+```
+
+The overlay scopes regular-agent tools to the mounted checkout. For issue and PR
+operations, instruct the agent to use `/opt/mosaic/tools/git/`. The gateway image
+configures `git-credential-mosaic` as Git's system credential helper, so pushes and
+`pr-create.sh` resolve only the `stack-dogfood` slot and fail if it is absent.
+
+This deployment route is separate from the local source-development restrictions
+below.
+
 ## Development
 
 ### Prerequisites

docker-compose.dogfood.yml

@@ -0,0 +1,22 @@
+# Explicit, single-seat dogfood mode for stack-containerization B2.
+# Use with docker-compose.yml. The base stack remains credential-free.
+services:
+  gateway:
+    environment:
+      # Identity and credential layout match a fleet seat. This fixed name prevents
+      # an operator from mounting one seat while attributing actions to another.
+      MOSAIC_AGENT_NAME: stack-dogfood
+      MOSAIC_GIT_IDENTITY: stack-dogfood
+      MOSAIC_BRAIN_HOME: /opt/mosaic/brain
+      AGENT_FILE_SANDBOX_DIR: /workspace/stack
+      AGENT_USER_TOOLS: fs_read_file,fs_write_file,fs_list_directory,fs_edit_file,git_status,git_log,git_diff,shell_exec
+    volumes:
+      # Mount a dedicated worktree, never the canonical clone or divergent local main.
+      - type: bind
+        source: ${MOSAIC_DOGFOOD_WORKTREE:?set to a dedicated next-based stack worktree}
+        target: /workspace/stack
+      # Only this seat home enters the container. Other fleet credentials stay outside.
+      - type: bind
+        source: ${MOSAIC_DOGFOOD_SEAT_HOME:?set to the external stack-dogfood seat directory}
+        target: /opt/mosaic/brain/fleet/agents/stack-dogfood
+        read_only: true

docker-compose.yml

@@ -47,6 +47,44 @@ services:
     environment:
       COLLECTOR_OTLP_ENABLED: 'true'
 
+
+  gateway:
+    # Standalone-tier application service (compose `stack` profile).
+    # Default image = local build of docker/gateway.Dockerfile (works with
+    # no registry auth); override GATEWAY_IMAGE to a CI-published sha tag
+    # for registry deploys (git.mosaicstack.dev/mosaicstack/stack/gateway:sha-XXXXXXX).
+    profiles: [stack]
+    image: ${GATEWAY_IMAGE:-mosaic-gateway:dev}
+    build:
+      context: .
+      dockerfile: docker/gateway.Dockerfile
+    ports:
+      - '${GATEWAY_HOST_PORT:-14242}:14242'
+    environment:
+      GATEWAY_PORT: '14242'
+      DATABASE_URL: postgresql://mosaic:mosaic@postgres:5432/mosaic
+      VALKEY_URL: valkey://valkey:6379
+      # The compose IS the standalone tier by declaration (mode contract:
+      # mode chosen at install); pinning skips cross-container probe races.
+      MOSAIC_STORAGE_TIER: standalone
+      # Standalone-tier secrets: generated at install (see .env.example).
+      # Enterprise tier replaces these with Vault/Openbao plumbing.
+      BETTER_AUTH_SECRET: '${BETTER_AUTH_SECRET:?set in .env — openssl rand -hex 32}'
+    volumes:
+      - gateway_workspaces:/opt/mosaic/.workspaces
+    depends_on:
+      postgres:
+        condition: service_healthy
+      valkey:
+        condition: service_healthy
+    healthcheck:
+      test: ['CMD-SHELL', 'wget -qO- http://127.0.0.1:14242/health || exit 1']
+      interval: 10s
+      timeout: 5s
+      retries: 12
+      start_period: 20s
+
 volumes:
+  gateway_workspaces:
   pg_data:
   valkey_data:

docker/gateway.Dockerfile

@@ -29,11 +29,19 @@ ENV NODE_ENV=production
 # $MOSAIC_ROOT/.workspaces (apps/gateway/src/workspace/workspace.service.ts);
 # mount a volume over /opt/mosaic to persist workspaces across container restarts.
 # Intentionally unpinned: Alpine's signed repository is the trust anchor; pinning
-# git was declined so routine base-image security updates remain maintainable.
-RUN apk add --no-cache git \
+# packages was declined so routine base-image security updates remain maintainable.
+# bash/curl/python3 are runtime dependencies of the provider-neutral Mosaic git
+# wrappers. jq supports wrapper discovery for non-canonical Gitea hosts.
+RUN apk add --no-cache bash curl git jq python3 \
   && mkdir -p /opt/mosaic/.workspaces \
   && chown -R node:node /opt/mosaic /app
 ENV MOSAIC_ROOT=/opt/mosaic
+# Dogfood agents use the same fail-closed credential helper and PR wrappers as
+# fleet seats. The complete tools directory is copied because pr-create.sh shares
+# provider detection, declaration validation, and credential libraries with the
+# rest of the wrapper suite.
+COPY --from=builder /app/packages/mosaic/framework/tools /opt/mosaic/tools
+RUN git config --system credential.helper /opt/mosaic/tools/git/git-credential-mosaic
 # Use the pnpm deploy output — resolves all deps into a flat, self-contained node_modules
 COPY --chown=node:node --from=builder /deploy/node_modules ./node_modules
 COPY --chown=node:node --from=builder /deploy/package.json ./package.json

packages/mosaic/framework/fleet/bin/mosaic

@@ -0,0 +1,150 @@
+#!/usr/bin/env bash
+# mosaic — fleet launcher (shipped-first, split-home safe).
+#
+# T110 / P5-RM-009 stack side. Carries the T106 brain launcher contract
+# (shipped-first, worktree dev opt-in, OFF pass-through, typed failure) with
+# one split-home correction: the SHIPPED npm mosaic is resolved from the real
+# user's home (passwd database), never from $HOME. Under split-home seat
+# layouts HOME is a seat home: it carries no npm prefix, and a
+# $HOME/.npm-global there would be a plantable descriptor, so the $HOME
+# candidate is consulted only when the passwd lookup itself fails, and then
+# only with a full symlink-component refusal (secure descriptor traversal).
+#
+# Contract:
+#   1. SHIPPED npm mosaic is the default. Candidate order:
+#        a. <real-home>/.npm-global/bin/mosaic — real home from the passwd
+#           database. The final component may be npm's own bin symlink into
+#           lib/node_modules; that indirection is npm's layout, not a plant.
+#        b. $HOME/.npm-global/bin/mosaic — ONLY when the passwd lookup
+#           fails, and then only when the candidate is a trusted-shape
+#           absolute path: relative HOME and parent-escape (..) components
+#           are refused outright, and every remaining component must be a
+#           non-symlink (secure descriptor traversal). Refused candidates
+#           are never executed.
+#   2. Worktree build is DEV OPT-IN: used only when MOSAIC_CLI_WORKTREE is
+#      explicitly set. Health-checked via --version; ANY doubt (absent,
+#      unreadable, or failing) falls back to the shipped npm mosaic with a
+#      warning on stderr. With no environment set, worktree candidates are
+#      never consulted — stale worktree builds cannot regain precedence.
+#   3. MOSAIC_FLEET_CLI_OFF keeps its pass-through semantics: set (any
+#      value) forces pure pass-through. The dev path is not consulted even
+#      when MOSAIC_CLI_WORKTREE is also set.
+#   4. Typed failure: with no runnable candidate the launcher prints one
+#      stderr line naming what was checked and exits 127.
+#   5. NEVER writes to the mosaic home or the npm prefix. Deployment to the
+#      fleet goes through the real channel (PR to next -> mosaic update).
+#
+# Env:
+#   MOSAIC_CLI_WORKTREE  dev opt-in: path to a stack worktree whose
+#                        packages/mosaic/dist/cli.js is used (health-checked,
+#                        shipped fallback on doubt)
+#   MOSAIC_FLEET_CLI_OFF set (any value) to force pure pass-through
+#
+# Component walk note: the descriptor guard splits on "/" without quoting so
+# multi-byte HOME paths with spaces are not supported for the FALLBACK
+# candidate; the passwd candidate needs no walk (trusted derivation).
+
+set -u
+
+fail() {
+    echo "mosaic: $*" >&2
+    exit 127
+}
+
+# Real user home from the passwd database (HOME-independent).
+real_home() {
+    getent passwd "$(id -u)" 2>/dev/null | cut -d: -f6
+}
+
+# True when any component of an ABSOLUTE candidate path is a symlink. Only
+# ever called after fallback_candidate_usable's absolute-shape check.
+path_has_symlink_component() {
+    local path="$1" dir base acc="" part
+    dir="$(dirname -- "$path")"
+    base="$(basename -- "$path")"
+    local IFS='/'
+    for part in $dir; do
+        acc="$acc/$part"
+        [ -L "$acc" ] && return 0
+    done
+    [ -L "$dir/$base" ] && return 0
+    return 1
+}
+
+# Reject the untrusted $HOME fallback candidate unless it is a trusted-shape
+# absolute path: absolute, no parent-escape (..) components, and no symlink
+# components anywhere on the path. Every rejection is named on stderr so the
+# typed failure explains itself. This is the launcher's descriptor guard; the
+# suite's mutation control (guard bypassed) must plant-exec, proving the guard
+# is what stands between a hostile HOME and code execution.
+fallback_candidate_usable() {
+    local candidate="$1"
+    case "$candidate" in
+        /*) ;;
+        *)
+            echo "mosaic: refusing \$HOME candidate $candidate: relative path is untrusted without a passwd home" >&2
+            return 1
+            ;;
+    esac
+    if printf '%s' "$candidate" | grep -qE '(^|/)\.\.(/|$)'; then
+        echo "mosaic: refusing \$HOME candidate $candidate: parent-escape component" >&2
+        return 1
+    fi
+    if path_has_symlink_component "$candidate"; then
+        echo "mosaic: refusing \$HOME candidate $candidate: symlink component (untrusted without a passwd home)" >&2
+        return 1
+    fi
+    return 0
+}
+
+# Print shipped candidates in contract order. Refusals are reported on stderr
+# so the typed failure names the cause.
+shipped_candidates() {
+    local rh home_candidate
+    rh="$(real_home)"
+    if [ -n "$rh" ]; then
+        printf '%s\n' "$rh/.npm-global/bin/mosaic"
+        return 0
+    fi
+    # passwd lookup failed: the only fallback is $HOME, descriptor-guarded.
+    if [ -n "${HOME:-}" ]; then
+        home_candidate="$HOME/.npm-global/bin/mosaic"
+        if fallback_candidate_usable "$home_candidate"; then
+            printf '%s\n' "$home_candidate"
+        fi
+    fi
+    return 0
+}
+
+resolve_shipped() {
+    local candidate
+    while IFS= read -r candidate; do
+        [ -n "$candidate" ] || continue
+        if [ -x "$candidate" ]; then
+            printf '%s\n' "$candidate"
+            return 0
+        fi
+    done < <(shipped_candidates)
+    return 1
+}
+
+# Dev opt-in only: an explicit MOSAIC_CLI_WORKTREE reaches the worktree build,
+# and pure pass-through (MOSAIC_FLEET_CLI_OFF) outranks it.
+if [ -n "${MOSAIC_CLI_WORKTREE:-}" ] && [ -z "${MOSAIC_FLEET_CLI_OFF:-}" ]; then
+    CLI="$MOSAIC_CLI_WORKTREE/packages/mosaic/dist/cli.js"
+    if [ -r "$CLI" ]; then
+        if v="$(node "$CLI" --version 2>/dev/null)" && [ -n "$v" ]; then
+            exec node "$CLI" "$@"
+        fi
+        echo "mosaic: worktree build at $CLI failed its health check; using shipped npm mosaic" >&2
+    else
+        echo "mosaic: worktree build at $CLI absent or unreadable; using shipped npm mosaic" >&2
+    fi
+fi
+
+SHIPPED="$(resolve_shipped)" || true
+if [ -n "${SHIPPED:-}" ]; then
+    exec "$SHIPPED" "$@"
+fi
+
+fail "no runnable CLI (shipped npm mosaic absent from the passwd-home npm prefix and \$HOME; worktree build requires MOSAIC_CLI_WORKTREE)"

packages/mosaic/framework/fleet/bin/test-mosaic-launcher.sh

@@ -0,0 +1,193 @@
+#!/usr/bin/env bash
+# Hermetic suite for the fleet/bin/mosaic launcher (T110 / P5-RM-009).
+#
+# Arms cover the plan acceptance: split-home shipped-first positive, typed
+# failure on missing candidates, stale-worktree non-precedence, OFF
+# pass-through, and secure-descriptor refusal on the untrusted $HOME
+# fallback. No network, no real npm install, no node package build: the
+# "shipped mosaic" is a stub script and getent is PATH-stubbed (set
+# GETENT_STUB=fail to make the passwd lookup fail, exercising the guarded
+# $HOME fallback).
+set -euo pipefail
+
+SCRIPT_DIR=$(cd -- "$(dirname -- "$0")" && pwd)
+LAUNCHER="$SCRIPT_DIR/mosaic"
+
+fail() {
+    echo "FAIL: $*" >&2
+    exit 1
+}
+
+[ -f "$LAUNCHER" ] || fail "missing launcher"
+[ -x "$LAUNCHER" ] || fail "launcher is not executable"
+bash -n "$LAUNCHER" || fail "launcher fails bash -n"
+
+WORK=$(mktemp -d)
+cleanup() { rm -rf "$WORK"; }
+trap cleanup EXIT
+
+REAL_HOME="$WORK/real-home"
+SEAT_HOME="$WORK/seat-home"
+STUB_BIN="$WORK/stub-bin"
+mkdir -p "$REAL_HOME/.npm-global/bin" "$SEAT_HOME" "$STUB_BIN"
+
+cat >"$REAL_HOME/.npm-global/bin/mosaic" <<'SH'
+#!/bin/sh
+echo "0.0.0-shipped-stub"
+SH
+chmod +x "$REAL_HOME/.npm-global/bin/mosaic"
+
+# PATH-stubbed getent: reports the real home for the current uid, unless
+# GETENT_STUB=fail is in the launcher environment (exercises the guarded
+# $HOME fallback path).
+cat >"$STUB_BIN/getent" <<SH
+#!/bin/sh
+if [ "\${GETENT_STUB:-}" = "fail" ]; then exit 2; fi
+if [ "\$1" = "passwd" ]; then
+    echo "stub:x:$(id -u):$(id -g):stub:$REAL_HOME:/bin/sh"
+    exit 0
+fi
+exit 2
+SH
+chmod +x "$STUB_BIN/getent"
+
+run_launcher() { # run_launcher <home> [VAR=value ...] -- [args...]
+    local home="$1"; shift
+    [ "${1:-}" = "--" ] && shift
+    env -i PATH="$STUB_BIN:/usr/bin:/bin" HOME="$home" TERM="${TERM:-dumb}" "$LAUNCHER" "$@"
+}
+
+# A1 — acceptance 1: split-home positive. HOME is an empty seat home; the
+# shipped mosaic resolves through the passwd real home.
+out="$(printf '' | run_launcher "$SEAT_HOME" -- --version)"
+[ "$out" = "0.0.0-shipped-stub" ] || fail "A1 split-home positive: got '$out', want shipped stub version"
+
+# A3 — acceptance 3: a stale worktree build is NEVER consulted without the
+# explicit opt-in, even when a worktree exists on disk.
+WT="$WORK/stale-wt"
+mkdir -p "$WT/packages/mosaic/dist"
+printf 'console.log("0.0.0-stale-worktree")\n' >"$WT/packages/mosaic/dist/cli.js"
+out="$(printf '' | run_launcher "$SEAT_HOME" -- --version)"
+[ "$out" = "0.0.0-shipped-stub" ] || fail "A3 stale worktree regained precedence without opt-in: got '$out'"
+
+# A2 (opt-in healthy) — explicit MOSAIC_CLI_WORKTREE reaches the worktree.
+out="$(printf '' | env MOSAIC_CLI_WORKTREE="$WT" HOME="$SEAT_HOME" PATH="$STUB_BIN:/usr/bin:/bin" "$LAUNCHER" --version)"
+[ "$out" = "0.0.0-stale-worktree" ] || fail "A2 opt-in worktree not used: got '$out'"
+
+# A2b (opt-in unhealthy) — absent dist falls back to shipped with a warning.
+out2="$(printf '' | env MOSAIC_CLI_WORKTREE="$WORK/empty-wt" HOME="$SEAT_HOME" PATH="$STUB_BIN:/usr/bin:/bin" "$LAUNCHER" --version 2>/dev/null)"
+[ "$out2" = "0.0.0-shipped-stub" ] || fail "A2b unhealthy worktree fallback output: '$out2'"
+err2="$(printf '' | env MOSAIC_CLI_WORKTREE="$WORK/empty-wt" HOME="$SEAT_HOME" PATH="$STUB_BIN:/usr/bin:/bin" "$LAUNCHER" --version 2>&1 >/dev/null)"
+case "$err2" in *"absent or unreadable"*|*"health check"*) ;; *) fail "A2b unhealthy worktree fallback warning missing: '$err2'" ;; esac
+
+# A4 — OFF pass-through: worktree opt-in is ignored when OFF is set.
+out="$(printf '' | env MOSAIC_FLEET_CLI_OFF=1 MOSAIC_CLI_WORKTREE="$WT" HOME="$SEAT_HOME" PATH="$STUB_BIN:/usr/bin:/bin" "$LAUNCHER" --version)"
+[ "$out" = "0.0.0-shipped-stub" ] || fail "A4 OFF did not force pass-through: got '$out'"
+
+# A5 — acceptance 4: typed failure when no candidate exists (passwd lookup
+# fails, seat home carries no npm prefix). Expect 127 + documented message.
+set +e
+err="$(printf '' | env GETENT_STUB=fail HOME="$SEAT_HOME" PATH="$STUB_BIN:/usr/bin:/bin" "$LAUNCHER" --version 2>&1 >/dev/null)"
+rc=$?
+set -e
+[ "$rc" = "127" ] || fail "A5 typed failure rc: got $rc, want 127"
+case "$err" in *"no runnable CLI"*) ;; *) fail "A5 typed failure message missing: '$err'" ;; esac
+
+# A6 — secure descriptor traversal, ABSOLUTE symlink plant (corrected per
+# rev-code-02 B3: the symlink points at $PLANT/.npm-global so the candidate
+# resolves EXACTLY to the planted executable). passwd lookup fails and a
+# symlink-planted $HOME/.npm-global is refused without execution.
+PLANT="$WORK/planted-target"
+mkdir -p "$PLANT/.npm-global/bin"
+cat >"$PLANT/.npm-global/bin/mosaic" <<SH
+#!/bin/sh
+touch "$WORK/planted-sentinel"
+echo "0.0.0-planted"
+SH
+chmod +x "$PLANT/.npm-global/bin/mosaic"
+ln -s "$PLANT/.npm-global" "$SEAT_HOME/.npm-global"
+set +e
+err="$(printf '' | env GETENT_STUB=fail HOME="$SEAT_HOME" PATH="$STUB_BIN:/usr/bin:/bin" "$LAUNCHER" --version 2>&1)"
+rc=$?
+set -e
+[ "$rc" = "127" ] || fail "A6 planted descriptor was followed (rc $rc, out '$err')"
+case "$err" in *"symlink component"*) ;; *) fail "A6 refusal diagnostic missing: '$err'" ;; esac
+[ ! -e "$WORK/planted-sentinel" ] || fail "A6 planted mosaic EXECUTED"
+
+# A6b — mutation control (rev-code-02 B3): a copy of the launcher with the
+# descriptor guard bypassed MUST execute the plant under the identical hostile
+# arm. If the mutant stays clean, the plant path is wrong and A6 proves
+# nothing.
+MUTANT="$WORK/mutant-mosaic"
+sed 's/if fallback_candidate_usable "\$home_candidate"; then/if true; then/' "$LAUNCHER" >"$MUTANT"
+chmod +x "$MUTANT"
+[ "$(grep -c 'if true; then' "$MUTANT")" -eq 1 ] || fail "A6b mutant not created (guard call not replaced)"
+set +e
+mout="$(printf '' | env GETENT_STUB=fail HOME="$SEAT_HOME" PATH="$STUB_BIN:/usr/bin:/bin" "$MUTANT" --version 2>&1)"
+mrc=$?
+set -e
+[ "$mrc" = "0" ] || fail "A6b mutant did not execute the plant (rc $mrc, out '$mout') - A6 proves nothing"
+[ -e "$WORK/planted-sentinel" ] || fail "A6b mutant ran but sentinel absent - plant path wrong, A6 proves nothing"
+
+# A7 — relative-HOME hostile arm (rev-code-02 B2): a relative HOME whose name
+# is a symlink in the launcher CWD must be refused outright, never resolved
+# against the working directory.
+CWD_SANDBOX="$WORK/cwd-sandbox"
+REL_PLANT="$WORK/relative-plant"
+mkdir -p "$CWD_SANDBOX" "$REL_PLANT/.npm-global/bin"
+cat >"$REL_PLANT/.npm-global/bin/mosaic" <<SH
+#!/bin/sh
+touch "$WORK/relative-sentinel"
+echo "0.0.0-relative-planted"
+SH
+chmod +x "$REL_PLANT/.npm-global/bin/mosaic"
+ln -s "$REL_PLANT" "$CWD_SANDBOX/relative-home"
+set +e
+rout="$(cd "$CWD_SANDBOX" && printf '' | env GETENT_STUB=fail HOME="relative-home" PATH="$STUB_BIN:/usr/bin:/bin" "$LAUNCHER" --version 2>&1)"
+rrc=$?
+set -e
+[ "$rrc" = "127" ] || fail "A7 relative HOME was followed (rc $rrc, out '$rout')"
+case "$rout" in *"relative path"*) ;; *) fail "A7 relative-refusal diagnostic missing: '$rout'" ;; esac
+[ ! -e "$WORK/relative-sentinel" ] || fail "A7 relative plant EXECUTED"
+
+# A7b — mutation control for the absolute-shape check: the same mutant (guard
+# bypassed) MUST execute the relative plant under the identical arm.
+set +e
+rmout="$(cd "$CWD_SANDBOX" && printf '' | env GETENT_STUB=fail HOME="relative-home" PATH="$STUB_BIN:/usr/bin:/bin" "$MUTANT" --version 2>&1)"
+rmrc=$?
+set -e
+[ "$rmrc" = "0" ] || fail "A7b mutant did not execute the relative plant (rc $rmrc, out '$rmout') - A7 proves nothing"
+[ -e "$WORK/relative-sentinel" ] || fail "A7b mutant ran but relative sentinel absent - arm wrong, A7 proves nothing"
+
+# A8 — parent-escape hostile arm (rev-code-02 delta, B2 remains): an absolute
+# HOME containing a literal '..' component must be refused by the
+# parent-escape check — the traversal would otherwise land on a planted tree
+# OUTSIDE the seat home with no symlink involved.
+ESC_BASE="$WORK/escape-base"
+ESC_TARGET="$WORK/escape-target"
+mkdir -p "$ESC_BASE" "$ESC_TARGET/.npm-global/bin"
+cat >"$ESC_TARGET/.npm-global/bin/mosaic" <<SH
+#!/bin/sh
+touch "$WORK/escape-sentinel"
+echo "0.0.0-escape-planted"
+SH
+chmod +x "$ESC_TARGET/.npm-global/bin/mosaic"
+set +e
+eout="$(printf '' | env GETENT_STUB=fail HOME="$ESC_BASE/../escape-target" PATH="$STUB_BIN:/usr/bin:/bin" "$LAUNCHER" --version 2>&1)"
+erc=$?
+set -e
+[ "$erc" = "127" ] || fail "A8 parent-escape HOME was followed (rc $erc, out '$eout')"
+case "$eout" in *"parent-escape component"*) ;; *) fail "A8 parent-escape diagnostic missing: '$eout'" ;; esac
+[ ! -e "$WORK/escape-sentinel" ] || fail "A8 escape plant EXECUTED"
+
+# A8b — mutation control: the guard-bypassed copy MUST execute the parent-
+# escape plant under the identical arm (sentinel present, rc 0), proving the
+# parent-escape check is what stands.
+set +e
+emout="$(printf '' | env GETENT_STUB=fail HOME="$ESC_BASE/../escape-target" PATH="$STUB_BIN:/usr/bin:/bin" "$MUTANT" --version 2>&1)"
+emrc=$?
+set -e
+[ "$emrc" = "0" ] || fail "A8b mutant did not execute the escape plant (rc $emrc, out '$emout') - A8 proves nothing"
+[ -e "$WORK/escape-sentinel" ] || fail "A8b mutant ran but escape sentinel absent - arm wrong, A8 proves nothing"
+
+echo "mosaic launcher suite: all arms passed"

packages/mosaic/framework/framework-manifest.txt

@@ -46,7 +46,12 @@ systemd/**
 templates/**
 tools/**
 # Fleet: only the framework-seeded fleet subtrees are framework-owned.
+# fleet/bin is exact-entry on purpose (T110 B1): the estate's fleet/bin carries
+# operator-owned executables this package does not ship; a subtree glob here
+# would make keep-mode update prune them.
 fleet/README.md
+fleet/bin/mosaic
+fleet/bin/test-mosaic-launcher.sh
 fleet/examples/**
 fleet/profiles/**
 fleet/roles/**

packages/mosaic/src/framework/manifest-parity.spec.ts

@@ -148,6 +148,26 @@ describe.skipIf(!hasBash)('bash ↔ TS manifest parity (§6.1)', () => {
     const manifest = loadManifest(FRAMEWORK_ROOT);
     expect(bashSubtreeRoots().sort()).toEqual(frameworkSubtreeRoots(manifest).sort());
   });
+
+  it('fleet/bin ownership is exact and does not prune existing executables (T110 B1)', () => {
+    // fleet/bin carries estate executables this package does not ship. A
+    // subtree glob here would classify them framework-owned and keep-mode
+    // update would prune them. The manifest must own EXACTLY the two shipped
+    // launcher files and nothing else in fleet/bin, on BOTH resolvers.
+    const manifest = loadManifest(FRAMEWORK_ROOT);
+    const expected: Array<[string, string]> = [
+      ['fleet/bin/mosaic', 'framework'],
+      ['fleet/bin/test-mosaic-launcher.sh', 'framework'],
+      ['fleet/bin/seat-up.sh', 'operator'], // shipped-by-estate, unshipped here
+      ['fleet/bin/launch-seat.sh', 'operator'],
+      ['fleet/bin', 'operator'], // the directory itself is unlisted
+    ];
+    for (const [path, want] of expected) {
+      const ts = resolveOwnership(manifest, path);
+      expect(ts).toBe(want);
+      expect(bashResolve(path)).toBe(want);
+    }
+  });
 });
 
 /**

scripts/verify-dogfood-compose.sh

@@ -0,0 +1,144 @@
+#!/usr/bin/env bash
+# Hermetic structural check for the explicit dogfood Compose overlay.
+set -euo pipefail
+
+repo_root=$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)
+tmp=$(mktemp -d)
+trap 'rm -rf "$tmp"' EXIT
+mkdir -p "$tmp/worktree" "$tmp/seat/secrets"
+
+base_config_json=$(
+  cd "$repo_root"
+  BETTER_AUTH_SECRET=test-only-not-a-credential \
+    docker compose --profile stack config --format json
+)
+
+BASE_CONFIG_JSON="$base_config_json" python3 <<'PY'
+import json
+import os
+
+config = json.loads(os.environ["BASE_CONFIG_JSON"])
+gateway = config["services"]["gateway"]
+env = gateway["environment"]
+for key in (
+    "MOSAIC_AGENT_NAME",
+    "MOSAIC_GIT_IDENTITY",
+    "MOSAIC_BRAIN_HOME",
+    "AGENT_FILE_SANDBOX_DIR",
+    "AGENT_USER_TOOLS",
+):
+    assert key not in env, f"base compose unexpectedly sets dogfood variable {key}"
+
+targets = {mount["target"] for mount in gateway["volumes"]}
+assert "/workspace/stack" not in targets
+assert not any(target.startswith("/opt/mosaic/brain/") for target in targets)
+PY
+
+config_json=$(
+  cd "$repo_root"
+  BETTER_AUTH_SECRET=test-only-not-a-credential \
+  MOSAIC_DOGFOOD_WORKTREE="$tmp/worktree" \
+  MOSAIC_DOGFOOD_SEAT_HOME="$tmp/seat" \
+    docker compose \
+      -f docker-compose.yml \
+      -f docker-compose.dogfood.yml \
+      --profile stack \
+      config --format json
+)
+
+CONFIG_JSON="$config_json" EXPECT_WORKTREE="$tmp/worktree" EXPECT_SEAT="$tmp/seat" python3 <<'PY'
+import json
+import os
+
+config = json.loads(os.environ["CONFIG_JSON"])
+gateway = config["services"]["gateway"]
+env = gateway["environment"]
+
+expected_env = {
+    "MOSAIC_AGENT_NAME": "stack-dogfood",
+    "MOSAIC_GIT_IDENTITY": "stack-dogfood",
+    "MOSAIC_BRAIN_HOME": "/opt/mosaic/brain",
+    "AGENT_FILE_SANDBOX_DIR": "/workspace/stack",
+}
+for key, value in expected_env.items():
+    assert env.get(key) == value, f"{key}: expected {value!r}, got {env.get(key)!r}"
+
+allowed = set(env["AGENT_USER_TOOLS"].split(","))
+assert allowed == {
+    "fs_read_file",
+    "fs_write_file",
+    "fs_list_directory",
+    "fs_edit_file",
+    "git_status",
+    "git_log",
+    "git_diff",
+    "shell_exec",
+}, f"unexpected dogfood tool set: {sorted(allowed)}"
+
+mounts = {mount["target"]: mount for mount in gateway["volumes"]}
+worktree = mounts["/workspace/stack"]
+assert worktree["type"] == "bind"
+assert worktree["source"] == os.environ["EXPECT_WORKTREE"]
+assert not worktree.get("read_only", False), "dogfood worktree must be writable"
+
+seat = mounts["/opt/mosaic/brain/fleet/agents/stack-dogfood"]
+assert seat["type"] == "bind"
+assert seat["source"] == os.environ["EXPECT_SEAT"]
+assert seat.get("read_only") is True, "seat credential slot must be read-only"
+
+other_seat_mounts = [
+    target
+    for target in mounts
+    if target.startswith("/opt/mosaic/brain/fleet/agents/")
+    and target != "/opt/mosaic/brain/fleet/agents/stack-dogfood"
+]
+assert other_seat_mounts == [], f"other seat mounts leaked: {other_seat_mounts}"
+PY
+
+# Each required path must fail closed rather than falling back to the current checkout.
+expect_missing_path() {
+  local missing=$1 output rc
+  set +e
+  case "$missing" in
+    MOSAIC_DOGFOOD_WORKTREE)
+      output=$(
+        cd "$repo_root"
+        env -u MOSAIC_DOGFOOD_WORKTREE \
+          BETTER_AUTH_SECRET=test-only-not-a-credential \
+          MOSAIC_DOGFOOD_SEAT_HOME="$tmp/seat" \
+          docker compose -f docker-compose.yml -f docker-compose.dogfood.yml \
+            --profile stack config 2>&1
+      )
+      rc=$?
+      ;;
+    MOSAIC_DOGFOOD_SEAT_HOME)
+      output=$(
+        cd "$repo_root"
+        env -u MOSAIC_DOGFOOD_SEAT_HOME \
+          BETTER_AUTH_SECRET=test-only-not-a-credential \
+          MOSAIC_DOGFOOD_WORKTREE="$tmp/worktree" \
+          docker compose -f docker-compose.yml -f docker-compose.dogfood.yml \
+            --profile stack config 2>&1
+      )
+      rc=$?
+      ;;
+    *)
+      echo "FAIL: test requested unknown path variable $missing" >&2
+      exit 1
+      ;;
+  esac
+  set -e
+  if [[ $rc -eq 0 ]]; then
+    echo "FAIL: dogfood compose accepted missing $missing" >&2
+    exit 1
+  fi
+  if [[ "$output" != *"$missing"* ]]; then
+    echo "FAIL: missing-path failure did not name $missing" >&2
+    exit 1
+  fi
+}
+
+expect_missing_path MOSAIC_DOGFOOD_WORKTREE
+expect_missing_path MOSAIC_DOGFOOD_SEAT_HOME
+
+printf 'dogfood compose verification passed\n'