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Codeman maintainer c5b59633d8 feat(pi): add Pi (pi.dev) as a sixth CLI run mode (#206 )

SessionMode gains 'pi', a first-class backend alongside Claude Code,
OpenCode, Codex, Gemini and Antigravity: its own PTY, tmux session, rose
tab identity, welcome button, run-mode entry, cron agentType, Docker and
remote-SSH command defaults, and clone-repo Brain option.

Pi is a different shape of CLI from the other four, and three decisions
follow from that:

- It has NO permission prompts and no sandbox, so there is no
  --dangerously-skip-permissions analog and none was invented. The
  privilege-shaped knob is the tri-state approveProjectTrust, which makes
  pi load and EXECUTE repo-local .pi/extensions TypeScript and install
  missing project packages. clampExternalCliBypassForOwner() therefore
  puts pi in the MATERIALIZE branch: a non-granted multi-user owner gets
  --no-approve even when no config was sent, because pi's own default is
  a prompt the session user could answer themselves. That helper had zero
  test coverage; it now has coverage for all four CLIs.
- Only the PI_ prefix joins the env allowlist. Pi's ~34 provider key vars
  share no prefix and ALLOWED_ENV_PREFIXES is one global list with no mode
  context, so admitting them would widen the allowlist for every mode at
  once. Auth goes through pi's /login or the server's own environment.
  --api-key is deliberately never wired: it would put a provider secret on
  the spawn command line.
- pi stays OUT of isAltScreenStripMode(). Its default TUI renders into the
  main screen with terminal-owned scrollback, and its 0.84.0 fullscreen
  mode is runtime-switchable via /settings; that flip was measured to put
  the pane into the alt screen, which the strip would have corrupted.

pi-cli-resolver.ts additionally sanity-probes `pi --version` and requires
semver-shaped output, because `pi` is a short generic name a stray binary
can shadow; GET /api/pi/status surfaces path and version so a
misresolution is diagnosable rather than presenting as a broken mode.

Docker installs pi in its own --ignore-scripts step so that flag cannot
affect the other four CLIs, and seeds its credentials per-file rather than
whole-dir (~/.pi/agent also holds sessions, extensions and package trees).

Verified end to end against pi 0.84.1 on an isolated instance: resolver
search-dir fallback, flag construction, piConfig persistence across a full
server restart, the trust prompt and its --no-approve suppression, the
rose Run button on the default daylight-blue skin (the nested skin block
eats per-mode gradients unless the rule lives inside it), and the buffer
local-echo policy, which pi tolerates where codex did not.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

2026-08-13 13:54:47 +02:00

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CRON_DISCOVERY.md

Phase 1 deliverable for the "Add Scheduling to Codeman" build brief. This documents the existing Codeman architecture and the smallest integration points for a cron. No session/tmux logic will be rebuilt — the new code is purely a trigger + persistence + history layer on top of the existing primitives.

Stack: aicodeman v1.2.1 — Fastify 5 backend, node-pty + tmux sessions, vanilla-JS SPA frontend served as static assets, JSON file state store, zod validation, ports-based dependency injection.

0. Critical finding: an existing `ScheduledRun` is NOT a cron

Codeman already has a ScheduledRun concept (/api/scheduled, src/web/ports/infra-port.ts:14-26, src/web/server.ts:1480-1605). It is a run-now, duration-bounded autonomous loop: given {prompt, workingDir, durationMinutes} it immediately spawns/kills throwaway sessions in a loop until the duration elapses. It has no time-based triggering, recurrence (once/interval/daily/weekly), enable/disable, next-run calculation, run history, or persistence across restarts.

Therefore the brief's core (the calendar/cron trigger layer) does not exist and must be built. The execution primitives it sits on top of do exist and will be reused. To honor brief §16 ("do not rename existing core concepts"), the new feature is named CronJob (with CronJobRun history records), kept distinct from the existing ScheduledRun.

1. Where session creation happens

Canonical create flow: POST /api/sessions, src/web/routes/session-routes.ts:262-438.
- new Session({ workingDir, mode, ... }) (src/session.ts:421-570)
- ctx.addSession(session) → ctx.setupSessionListeners(session) → ctx.persistSessionState(session) (all via SessionPort).
SessionPort interface: src/web/ports/session-port.ts:8-16.
Integration point: the cron service will mirror this exact sequence (create → addSession → setupSessionListeners → start) via SessionPort, not reimplement it.

2. Where agent/session types are defined

type SessionMode = 'claude' | 'shell' | 'opencode' | 'codex' | 'gemini' | 'antigravity' | 'pi' (src/types/session.ts:43-44). shell covers the brief's "Terminal/custom".
CLI availability resolvers in src/utils/{claude,codex,gemini,antigravity,opencode,pi}-cli-resolver.ts.
Integration point: the job's agentType reuses SessionMode verbatim.

3. Where input is sent into a session

Raw / paste: session.write(data) (src/session.ts:2243-2247) — direct PTY write.
Typed (recommended): session.writeViaMux(data) (src/session.ts:2301-2311) — tmux send-keys, falls back to PTY. Submit requires trailing \r.
Integration point: prompt delivery uses writeViaMux (typed) by default, write (paste) as the alternate input_mode.

4. Where active sessions are listed

ctx.sessions: ReadonlyMap<string, Session> (SessionPort).
Filters: Array.from(ctx.sessions.values()).filter(s => s.mode === X) and .isBusy() / .isIdle() (src/session-manager.ts:220-247).
Integration point: the §8 multi-session warning queries this map.

5. Where session kill/delete is handled

ctx.cleanupSession(sessionId, killMux?, reason?) (SessionPort; impl src/web/server.ts:997-1152). Underlying session.stop(killMux) at src/session.ts:2498-2585.
The cron does not kill sessions it launches (the brief wants them visible in the normal session UI); cleanup stays user-driven. Superseded post-review: recurring jobs now default to autoClosePreviousSession: true — the previous run's still-open session is closed via cleanupSession when the next run fires (see docs/cron-guide.md §8); opt out per job for fully user-driven cleanup.

6. How session state is stored / 7. Existing persistence

JSON file store: ~/.codeman/state.json (+ state-inner.json for Ralph). StateStore class src/state-store.ts:71; AppState interface src/types/app-state.ts:99-114.
Pattern: declare a field on AppState, add typed get/set methods on StateStore that mutate in-memory state and call the debounced save() (500ms debounce, atomic temp-file+rename, .bak backup, circuit breaker).
Integration point: add cronJobs?: Record<string, CronJob> and cronJobRuns?: Record<string, CronJobRun> to AppState, with matching StateStore accessors. No new DB (brief §6 forbids Postgres/Redis).

8. Where backend routes live

Route modules: src/web/routes/*.ts; barrel src/web/routes/index.ts; registered in WebServer.setupRoutes() src/web/server.ts:858-876 with a single ctx object from createRouteContext() (src/web/server.ts:553-613) that satisfies all port interfaces.
Validation: zod schemas in src/web/schemas.ts, applied via parseBody(Schema, req.body) (src/web/route-helpers.ts:101-111).
Errors: createErrorResponse(ApiErrorCode.X, msg) / ApiResponse (src/types/api.ts), auto-mapped to HTTP status by a preSerialization hook (src/web/server.ts:644-659).
SSE: ctx.broadcast(SseEvent.X, data) (EventPort, src/web/sse-events.ts); frontend mirror in src/web/public/constants.js.
Integration point: new cron-routes.ts registered alongside the others; new zod schema; new SseEvent constants for job list/run changes.

9. Where frontend pages/components live

Vanilla-JS SPA: single src/web/public/index.html + feature mixin files (Object.assign(CodemanApp.prototype, {...})). API via api-client.js (_apiJson/_apiPost/_apiDelete). Build = esbuild minify + content-hash, no bundler (scripts/build.mjs).
UI is panels/modals toggled by JS classes; forms use .form-row / .modal conventions (styles.css). SSE handler map in app.js.
Integration point: add a new cron-ui.js mixin + a panel/modal in index.html + nav entry, following the orchestrator/respawn panel pattern.

10. Background-loop pattern (for the due-checker)

Established pattern: this.cleanup.setInterval(fn, intervalMs, {description}) in WebServer.start() (src/web/server.ts:~1942-1966), auto-disposed in WebServer.stop() via this.cleanup.dispose() (src/web/server.ts:2336). RalphLoop (src/ralph-loop.ts:268-286) shows the self-rescheduling guard idiom.
Integration point: register a 30s cron tick via cleanup.setInterval; no manual shutdown wiring needed.

Smallest integration points (summary)

New piece	Reuses	Location
`CronJob` / `CronJobRun` types	— (new)	`src/types/cron.ts`
Persistence	`StateStore` / `AppState`	`src/types/app-state.ts`, `src/state-store.ts`
Next-run time math	— (new, pure, unit-tested)	`src/cron/cron-time.ts`
Launch + send prompt	`SessionPort` (`addSession`/listeners/`writeViaMux`)	`src/cron/cron-service.ts`
Background due loop	`cleanup.setInterval` pattern	`src/cron/cron-loop.ts`
Routes + schema	route/ports/zod/SSE patterns	`src/web/routes/cron-routes.ts`, `src/web/schemas.ts`, `src/web/sse-events.ts`
UI	panel/modal/mixin conventions	`src/web/public/cron-ui.js`, `index.html`

Nothing in the session, tmux, persistence, routing, or SSE subsystems is rewritten — the cron is additive and calls existing services.

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