feat(companion): include checksums in release bundle artifacts

README.md

@@ -1735,14 +1735,14 @@ Companion runtime helper:
   - runtime observability/control passthroughs (`pendingRequestCount`, `pendingEventWaitCount`, `hasPendingWork`, `idle`, `lastDisconnectCode`, `lastDisconnectReason`, `getPendingWorkSnapshot()`, `getEventSurfaceSnapshot()`, `getConnectionSnapshot()`, `connected`, `waitForIdle()`)
 - `src/companion/heartbeatLoop.ts` provides `CompanionHeartbeatLoop` for periodic heartbeat scheduling (`publishHeartbeat`) with start/stop safety, optional interval jitter (`jitterRatio`) to spread load (with safe normalization for invalid random samples), `tickNow()` for manual sends, success/error hooks, loop observability (`successCount`, `lastSuccessAt`, `failureCount`, `lastFailure`, `getState()`), and optional auto-stop after repeated failures.
 - `src/companion/bootstrapManifest.ts` provides `createCompanionBootstrapManifest()` for generating a typed gateway/node/runtime bootstrap contract used by packaging flows, including optional initial status/location/push payloads.
-- `src/companion/releaseBundle.ts` provides `writeCompanionReleaseBundle()` for writing a distributable companion bundle directory (bootstrap JSON + launcher script + README).
+- `src/companion/releaseBundle.ts` provides `writeCompanionReleaseBundle()` for writing a distributable companion bundle directory (bootstrap JSON + launcher script + README + SHA-256 checksums).
 
 Minimal companion CLI:
 - `flynn companion --once` connects to the gateway, registers a node, publishes one heartbeat, then exits.
 - `flynn companion --platform macos --heartbeat 30` runs a long-lived node with periodic heartbeats and logs `agent.stream`/`agent.typing` events.
 - `flynn companion --once --handoff "summarize my status"` performs one post-registration `agent.send` handoff and prints the `done` content.
 - `flynn companion --export-bootstrap ./companion.bootstrap.json` writes a resolved bootstrap manifest for desktop/mobile companion app packaging (use `-` for stdout).
-- `flynn companion --export-release-bundle ./dist/companion-macos` writes a release bundle directory (`companion.bootstrap.json`, `run-companion.sh`, `README.md`) and exits.
+- `flynn companion --export-release-bundle ./dist/companion-macos` writes a release bundle directory (`companion.bootstrap.json`, `run-companion.sh`, `README.md`, `CHECKSUMS.sha256`) and exits.
 - `flynn companion --once --platform ios --app-version 1.2.3 --device-name "iPhone" --status-text ready --battery-pct 84 --power-source battery` sends richer initial node status metadata.
 - `flynn companion --once --latitude 37.3349 --longitude -122.009 --location-source gps` bootstraps node location metadata.
 - `flynn companion --once --platform android --push-token <fcm-token>` (or `--platform ios --push-token <apns-token>`) registers push routing metadata during bootstrap.

docs/api/PROTOCOL.md

@@ -1863,4 +1863,4 @@ For more implementation details, see:
 - Companion runtime client helper: `src/companion/runtimeClient.ts` (node + system + `canvas.*` typed RPC wrappers, optional `autoConnect`/`autoReconnect`, optional reconnect state replay, `sendAgentMessage` handoff helper, connection event subscriptions)
 - Platform companion wrappers: `src/companion/platformClients.ts`
 - Companion bootstrap manifest helper: `src/companion/bootstrapManifest.ts` (typed packaging manifest contract used by `flynn companion --export-bootstrap`, including optional initial status/location/push payloads)
-- Companion release bundle helper: `src/companion/releaseBundle.ts` (writes bootstrap JSON + launcher script + README for distributable companion shell bundles)
+- Companion release bundle helper: `src/companion/releaseBundle.ts` (writes bootstrap JSON + launcher script + README + `CHECKSUMS.sha256` for distributable companion shell bundles)

docs/architecture/AGENT_DIAGRAM.md

@@ -156,7 +156,7 @@ Gateway streaming UX signals:
 - Routing applies reaction rules with deterministic priority/cooldown (and recursion guard) before intent routing.
 - Companion nodes re-register `node.*` capabilities after reconnect; runtime clients can auto-reconnect, optionally replay cached node state (`register/status/location/push`), and surface connection events.
 - `flynn companion --export-bootstrap <path|->` can emit a resolved companion bootstrap manifest (gateway/node/runtime contract) for desktop/mobile packaging flows without opening a runtime connection.
-- `flynn companion --export-release-bundle <dir>` can emit a distributable shell bundle (bootstrap JSON + launcher + README) for desktop/mobile packaging pipelines.
+- `flynn companion --export-release-bundle <dir>` can emit a distributable shell bundle (bootstrap JSON + launcher + README + SHA-256 checksums) for desktop/mobile packaging pipelines.
 - `flynn companion` can bootstrap status/location/push metadata on connect (`node.status.set` + optional `node.location.set`/`node.push_token.set`) so thin companion shells can register operational context in one launch.
 - Canvas artifacts are persisted by the gateway so session UI surfaces can recover after daemon restarts.
 - TTS synthesis uses an ordered provider chain with health cooldown tracking; if all providers fail, replies degrade to text-only without dropping the response.

docs/architecture/GATEWAY_SESSIONS_AND_QUEUE.md

@@ -21,7 +21,7 @@ If you only want the protocol surface, see `docs/api/PROTOCOL.md`.
 - Browser workflow reliability primitives (`browser.wait_for/assert/extract/checkpoint.*`) execute in the same queued session lane and apply browser-config guardrails (domain allowlist/high-risk confirmation, bounded retries, workflow step budget).
 - Companion `node.*` registration is per WebSocket connection; reconnects must re-register capabilities before invoking node RPC methods (or use runtime-client reconnect state replay to re-register/status/location/push automatically).
 - Companion packaging/bootstrap can be generated offline via `flynn companion --export-bootstrap <path|->`, which emits resolved gateway/node/runtime settings without opening a WebSocket session.
-- Companion release artifacts can be generated via `flynn companion --export-release-bundle <dir>`, producing bootstrap JSON + launcher + README for installable shell distribution workflows.
+- Companion release artifacts can be generated via `flynn companion --export-release-bundle <dir>`, producing bootstrap JSON + launcher + README + `CHECKSUMS.sha256` for installable shell distribution workflows.
 - Companion CLI supports one-shot shell bootstrap metadata for live sessions (`--app-version`/`--status-text`, `--latitude`/`--longitude`, `--push-token`) so desktop/mobile wrappers can initialize node status/location/push in a single launch flow.
 - Canvas artifacts are persisted per session under the gateway data directory for UI recovery across restarts.
 - TTS output is best-effort with ordered provider fallback + per-provider cooldown tracking; synthesis failures still fall back to text-only responses.

docs/plans/2026-02-26-personal-assistant-productization-plan.md

@@ -49,7 +49,7 @@ Within 8-10 weeks, ship a stable "Personal Assistant Mode" that supports:
 2. Ship a minimal mobile companion shell (iOS + Android) for registration, status, push token, and message handoff.
 3. Add signed release artifacts and installation docs.
 
-Status update (2026-02-27): companion bootstrap-manifest export is now available via `flynn companion --export-bootstrap <path|->` as a packaging contract for desktop/mobile shells, `flynn companion --export-release-bundle <dir>` now emits bundle artifacts (bootstrap JSON + launcher + README), and `flynn companion` supports one-shot status/location/push bootstrap flags (`--app-version`, `--latitude/--longitude`, `--push-token`) so thin shells can initialize companion metadata in a single run.
+Status update (2026-02-27): companion bootstrap-manifest export is now available via `flynn companion --export-bootstrap <path|->` as a packaging contract for desktop/mobile shells, `flynn companion --export-release-bundle <dir>` now emits bundle artifacts (bootstrap JSON + launcher + README + `CHECKSUMS.sha256`), and `flynn companion` supports one-shot status/location/push bootstrap flags (`--app-version`, `--latitude/--longitude`, `--push-token`) so thin shells can initialize companion metadata in a single run.
 
 ### Implementation Anchors
 

docs/plans/state.json

@@ -6981,6 +6981,25 @@
         "docs/plans/state.json"
       ],
       "test_status": "pnpm test:run src/cli/companion.test.ts src/companion/bootstrapManifest.test.ts src/companion/releaseBundle.test.ts + pnpm typecheck passing"
+    },
+    "personal-assistant-productization-phase1-companion-release-checksums": {
+      "status": "completed",
+      "date": "2026-02-27",
+      "updated": "2026-02-27",
+      "summary": "Hardened companion release-bundle artifacts with deterministic SHA-256 checksums. `writeCompanionReleaseBundle()` now emits `CHECKSUMS.sha256`, and `flynn companion --export-release-bundle` reports checksum output paths for distribution verification.",
+      "files_modified": [
+        "src/companion/releaseBundle.ts",
+        "src/companion/releaseBundle.test.ts",
+        "src/cli/companion.ts",
+        "src/cli/companion.test.ts",
+        "README.md",
+        "docs/api/PROTOCOL.md",
+        "docs/architecture/AGENT_DIAGRAM.md",
+        "docs/architecture/GATEWAY_SESSIONS_AND_QUEUE.md",
+        "docs/plans/2026-02-26-personal-assistant-productization-plan.md",
+        "docs/plans/state.json"
+      ],
+      "test_status": "pnpm test:run src/cli/companion.test.ts src/companion/releaseBundle.test.ts + pnpm typecheck passing"
     }
   },
   "overall_progress": {
@@ -6999,7 +7018,7 @@
     "tier2_completion": "4/4 (100%) — inbound webhooks, vector memory search, Dockerfile, heartbeat monitor",
     "tier3_completion": "5/5 (100%) — lane queue, credential redaction, web UI token dashboard, xAI (Grok) provider, Voyage AI embeddings",
     "tier4_completion": "4/4 (100%) — gateway lock, shell completion, Tailscale Serve/Funnel, DM pairing codes",
-    "feature_gap_scorecard": "rebaselined 2026-02-26 and updated 2026-02-27 (phase 3 + phase 1 + phase 2 + phase 4 slices + companion packaging/bundle tooling + shell bootstrap controls) — channel breadth, setup wizard, baseline browser automation, subagent controls, browser workflow reliability primitives (wait/assert/extract/retries/checkpoints/guardrails/budgets), companion reconnect/runtime-handoff foundations, companion packaging primitives (bootstrap export + release-bundle artifacts) and one-shot status/location/push shell bootstrap controls, voice reliability hardening (talk controls + TTS fallback/health + interruption-safe cancel semantics), and onboarding first-success funnel improvements are implemented; remaining high-impact personal-assistant gaps center on shipped desktop/mobile companion app binaries and signed distribution pipelines.",
+    "feature_gap_scorecard": "rebaselined 2026-02-26 and updated 2026-02-27 (phase 3 + phase 1 + phase 2 + phase 4 slices + companion packaging/bundle tooling + shell bootstrap controls) — channel breadth, setup wizard, baseline browser automation, subagent controls, browser workflow reliability primitives (wait/assert/extract/retries/checkpoints/guardrails/budgets), companion reconnect/runtime-handoff foundations, companion packaging primitives (bootstrap export + release-bundle artifacts + checksum manifests) and one-shot status/location/push shell bootstrap controls, voice reliability hardening (talk controls + TTS fallback/health + interruption-safe cancel semantics), and onboarding first-success funnel improvements are implemented; remaining high-impact personal-assistant gaps center on shipped desktop/mobile companion app binaries and signed distribution pipelines.",
     "operator_dx_milestone": "Phase 3 (Live Ops Dashboard): 2/2 plans complete — milestone done",
     "dashboard_observability": "completed — service health graphs + core service log viewer added to web UI via observability RPCs and bounded backend sampling",
     "gmail_auth_cli": "flynn gmail-auth command implemented with OAuth2 flow, doctor check, config routed to Telegram",
@@ -7032,7 +7051,7 @@
     "deeper_surfaces_phase3_companion_canvas_voice": "completed — companion reconnect resilience (auto-reconnect with backoff, pending-wait cancellation on disconnect), canvas artifact persistence (SQLite-backed store, daemon-restart durability), voice TTS fallback coverage (text-only reply on TTS failure, no dropped responses)",
     "deeper_surfaces_phase4_rollout": "completed — phase 4 rollout and operator readiness plan documented: canary rollout plan by feature flag/surface, explicit rollback playbook, operator docs and architecture/protocol docs synchronized",
     "post_phase_test_fixes": "completed — fixed 4 test failures introduced by phases 1-3: iOS/Android push listNodes (missing publishHeartbeat before platform-filtered query), server.test agent.send (run_state events now precede done; added sendAndWaitForDone helper), httpBody 413 (req.destroy() closed socket before response could be sent; replaced with Connection: close header on 413 responses)",
-    "personal_assistant_productization_plan": "in_progress — 8-10 week phased roadmap active; Phase 3 browser workflow reliability shipped, Phase 1 companion runtime reliability includes reconnect state replay + typed handoff support, companion packaging primitives now include bootstrap manifest export and release-bundle artifact generation, companion shell bootstrap controls cover status/location/push metadata, Phase 2 voice reliability ships talk controls + TTS provider fallback/health + interruption-safe voice cancel mapping, and Phase 4 onboarding includes Personal Assistant Mode preset + live readiness checks + first-success guidance. Remaining phase focus: shipped companion app surfaces and signed release artifacts.",
+    "personal_assistant_productization_plan": "in_progress — 8-10 week phased roadmap active; Phase 3 browser workflow reliability shipped, Phase 1 companion runtime reliability includes reconnect state replay + typed handoff support, companion packaging primitives now include bootstrap manifest export, release-bundle artifact generation, and checksum manifests, companion shell bootstrap controls cover status/location/push metadata, Phase 2 voice reliability ships talk controls + TTS provider fallback/health + interruption-safe voice cancel mapping, and Phase 4 onboarding includes Personal Assistant Mode preset + live readiness checks + first-success guidance. Remaining phase focus: shipped companion app surfaces and signed release artifacts.",
     "subagents_support": "completed — subagent phases 1-3 shipped with `subagent.spawn/send/list/cancel/delete/summary`, per-child queue mode (`followup|interrupt`), budgets (`max_turns`, `max_total_tokens`, `turn_timeout_ms`), tool-profile overrides, trace-linked audit events, `/subagents` inspection commands, and focused regression tests."
   },
   "soul_md_and_cron_create": {

src/cli/companion.test.ts

@@ -94,6 +94,7 @@ const {
     manifestPath: `${input.outputDir}/companion.bootstrap.json`,
     launcherPath: `${input.outputDir}/run-companion.sh`,
     readmePath: `${input.outputDir}/README.md`,
+    checksumsPath: `${input.outputDir}/CHECKSUMS.sha256`,
   }));
 
   return {

src/cli/companion.ts

@@ -360,6 +360,7 @@ export async function runCompanionSession(options: CompanionCommandOptions): Pro
     console.log(`- Manifest: ${result.manifestPath}`);
     console.log(`- Launcher: ${result.launcherPath}`);
     console.log(`- README: ${result.readmePath}`);
+    console.log(`- Checksums: ${result.checksumsPath}`);
     return;
   }
 

src/companion/releaseBundle.test.ts

@@ -48,6 +48,7 @@ describe('writeCompanionReleaseBundle', () => {
     const manifestRaw = await readFile(result.manifestPath, 'utf8');
     const launcherRaw = await readFile(result.launcherPath, 'utf8');
     const readmeRaw = await readFile(result.readmePath, 'utf8');
+    const checksumsRaw = await readFile(result.checksumsPath, 'utf8');
     const launcherStat = await stat(result.launcherPath);
 
     expect(JSON.parse(manifestRaw)).toMatchObject({
@@ -58,6 +59,9 @@ describe('writeCompanionReleaseBundle', () => {
     expect(launcherRaw).toContain('--push-token');
     expect(launcherRaw).toContain('--latitude');
     expect(readmeRaw).toContain('Flynn Companion Release Bundle');
+    expect(checksumsRaw).toContain('companion.bootstrap.json');
+    expect(checksumsRaw).toContain('run-companion.sh');
+    expect(checksumsRaw).toContain('README.md');
     expect((launcherStat.mode & 0o111) !== 0).toBe(true);
 
     await rm(tempDir, { recursive: true, force: true });

src/companion/releaseBundle.ts

@@ -1,4 +1,5 @@
 import { chmod, mkdir, writeFile } from 'node:fs/promises';
+import { createHash } from 'node:crypto';
 import type { CompanionBootstrapManifest } from './bootstrapManifest.js';
 
 export interface WriteCompanionReleaseBundleInput {
@@ -11,6 +12,7 @@ export interface WriteCompanionReleaseBundleResult {
   manifestPath: string;
   launcherPath: string;
   readmePath: string;
+  checksumsPath: string;
 }
 
 function shSingleQuote(value: string): string {
@@ -142,20 +144,27 @@ export async function writeCompanionReleaseBundle(
   const manifestPath = `${input.outputDir}/companion.bootstrap.json`;
   const launcherPath = `${input.outputDir}/run-companion.sh`;
   const readmePath = `${input.outputDir}/README.md`;
+  const checksumsPath = `${input.outputDir}/CHECKSUMS.sha256`;
+  const manifestBody = `${JSON.stringify(input.manifest, null, 2)}\n`;
+  const launcherBody = createLauncherScript(input.manifest);
+  const readmeBody = createReadme(input.manifest);
 
-  await writeFile(
+  await writeFile(manifestPath, manifestBody, 'utf8');
-    manifestPath,
+  await writeFile(launcherPath, launcherBody, 'utf8');
-    `${JSON.stringify(input.manifest, null, 2)}\n`,
-    'utf8',
-  );
-  await writeFile(launcherPath, createLauncherScript(input.manifest), 'utf8');
   await chmod(launcherPath, 0o755);
-  await writeFile(readmePath, createReadme(input.manifest), 'utf8');
+  await writeFile(readmePath, readmeBody, 'utf8');
+  const checksums = [
+    [createHash('sha256').update(manifestBody, 'utf8').digest('hex'), 'companion.bootstrap.json'],
+    [createHash('sha256').update(launcherBody, 'utf8').digest('hex'), 'run-companion.sh'],
+    [createHash('sha256').update(readmeBody, 'utf8').digest('hex'), 'README.md'],
+  ].map(([hash, name]) => `${hash}  ${name}`).join('\n');
+  await writeFile(checksumsPath, `${checksums}\n`, 'utf8');
 
   return {
     outputDir: input.outputDir,
     manifestPath,
     launcherPath,
     readmePath,
+    checksumsPath,
   };
 }