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# Implementation Summary

**Session ID**: `phase19-session12-terminal-and-containers` **Package**: null **Completed**: 2026-06-26 **Duration**: 3.5 hours

***

## Overview

Completed the cross-package terminal and container runtime session for Phase 19. The work adds shared terminal/container contracts, server-owned PTY and container runtime managers, local terminal/container REST routes, guarded executor integration, isolation diagnostics, scoped web terminal and isolation readiness UI, optional PTY dependency metadata, redaction-safe documentation, and focused plus full-suite validation.

***

## Deliverables

### Files Created

| File                                                                 | Purpose                                                                                                                             | Lines |
| -------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------- | ----- |
| `apps/server/src/managers/terminalSessionManager.ts`                 | PTY adapter boundary, terminal lifecycle, bounded output, timeout, input, kill, restart, exit state, cleanup, and result attachment | 682   |
| `apps/server/src/managers/containerRuntimeManager.ts`                | Docker and Apple Containers probe manager, image/browser/auth/worktree/network readiness, cleanup, and isolated spawn helpers       | 562   |
| `apps/server/src/lib/terminalContainerValidation.ts`                 | Terminal/container request parsing, idempotency metadata, and blocked raw-field validation                                          | 245   |
| `apps/server/src/routes/terminalContainers.ts`                       | Local REST routes for terminal snapshots, lifecycle actions, container probes, and isolated spawn preview/run responses             | 339   |
| `apps/server/tests/terminalSessionManager.test.ts`                   | Terminal manager coverage for PTY probes, lifecycle, output caps, timeout, kill, restart, and redaction                             | 124   |
| `apps/server/tests/containerRuntimeManager.test.ts`                  | Container manager coverage for runtime probes, image/mount/network readiness, cleanup, and unavailable fallbacks                    | 81    |
| `apps/server/tests/terminalContainerRoutes.test.ts`                  | Route coverage for validation, idempotency, terminal lifecycle, container probes, WebSocket updates, and no raw echo                | 254   |
| `apps/web/src/lib/terminalContainers.ts`                             | Web view models for terminal sessions, output windows, isolation capabilities, fallback reasons, and readiness rows                 | 467   |
| `apps/web/src/components/orchestration/TerminalRuntimeDrawer.tsx`    | Scoped terminal drawer with bounded output, controls, input, loading/empty/error/offline states, and focus support                  | 354   |
| `apps/web/src/components/orchestration/IsolationCapabilityPanel.tsx` | Isolation/runtime capability rows for PTY, Docker, Apple Containers, image, mounts, network, browser deps, and cleanup              | 177   |
| `apps/web/tests/terminalContainers.test.ts`                          | View-model coverage for labels, fallback ordering, output caps, and blocked payload rejection                                       | 141   |
| `apps/web/tests/TerminalRuntimeDrawer.test.tsx`                      | Component coverage for drawer states, controls, bounded output, focus, and duplicate-trigger guards                                 | 159   |
| `apps/web/tests/IsolationCapabilityPanel.test.tsx`                   | Component coverage for runtime capability rows, unavailable states, fallback reasons, and product-facing copy                       | 156   |

### Files Modified

| File                                                              | Changes                                                                                                                             |
| ----------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------- |
| `packages/protocol/src/orchestrationCommandCenter.ts`             | Added terminal session, terminal action, container runtime, isolated spawn, bounded output, and safe execution attachment contracts |
| `packages/protocol/src/isolation.ts`                              | Added terminal/container readiness, PTY/Docker/Apple Containers fallback reasons, image, mount, network, and cleanup metadata       |
| `packages/protocol/tests/orchestrationCommandCenter.test.ts`      | Added parser coverage for terminal/container contracts, attachments, isolated spawn, and blocked raw fields                         |
| `packages/protocol/tests/isolation.test.ts`                       | Added isolation readiness and fallback metadata coverage                                                                            |
| `apps/server/package.json`                                        | Added optional `node-pty` dependency metadata                                                                                       |
| `apps/server/src/managers/executorRegistry.ts`                    | Registered terminal/container executor entries with probe-backed capability transitions and guarded execution wiring                |
| `apps/server/src/managers/orchestrationCommandCenter.ts`          | Stored terminal/container execution attachments and safe event snapshots                                                            |
| `apps/server/src/lib/isolationDiagnostics.ts`                     | Added read-only terminal/container readiness metadata without raw echo                                                              |
| `apps/server/src/routes/commandCenter.ts`                         | Exposed terminal/container execution detail attachments through existing command-center routes                                      |
| `apps/server/src/routes/diagnostics.ts`                           | Wired isolation diagnostics to terminal/container manager probes                                                                    |
| `apps/server/src/server.ts`                                       | Instantiated managers, routes, executor dependencies, and shutdown disposal                                                         |
| `apps/server/tests/executorRegistry.test.ts`                      | Covered terminal/container capability transitions, guarded runs, cleanup, and bounded summaries                                     |
| `apps/server/tests/isolationDiagnostics.test.ts`                  | Covered readiness metadata, fallback reasons, auth inheritance, and compact diagnostics                                             |
| `apps/server/tests/websocket.test.ts`                             | Updated WebSocket expectations for terminal/container event shape                                                                   |
| `apps/web/src/lib/orchestrationApi.ts`                            | Added terminal/container API clients, response guards, parser failures, and duplicate in-flight keys                                |
| `apps/web/src/lib/commandCenterUi.ts`                             | Added safe terminal/container labels, status summaries, scoped output copy, and action availability                                 |
| `apps/web/src/store/useGameStore.ts`                              | Normalized terminal/container snapshots and events, drawer selection, and stale detail reset                                        |
| `apps/web/src/components/orchestration/CommandCenterPanes.tsx`    | Wired terminal drawer and isolation panel entry points into existing command-center panes                                           |
| `apps/web/src/components/orchestration/ExecutorFamiliesPanel.tsx` | Added terminal/container readiness and recent-run summaries without broad output                                                    |
| `apps/web/src/components/orchestration/OrchestrationShell.tsx`    | Wired terminal/container API actions, toasts, in-flight keys, and offline states                                                    |
| `apps/web/src/components/orchestration/OrchestrationTabs.tsx`     | Threaded terminal/container state and handlers into tab content                                                                     |
| `apps/web/tests/orchestrationApi.test.ts`                         | Added terminal/container client, parser, route, malformed response, and duplicate guard coverage                                    |
| `apps/web/tests/commandCenterStore.test.ts`                       | Added terminal/container event normalization, stale drawer reset, and raw-field rejection coverage                                  |
| `apps/web/tests/OrchestrationPanel.test.tsx`                      | Added integrated terminal drawer and isolation panel coverage                                                                       |
| `docs/isolation-and-sandbox.md`                                   | Updated the terminal/container threat model, gates, scoped output boundary, and no-claim limits                                     |
| `docs/api/README_api.md`                                          | Documented terminal/container routes, scoped output, probe responses, and execution records                                         |
| `apps/server/README_server.md`                                    | Documented server runtime manager behavior, optional PTY dependency, and local-only boundaries                                      |
| `apps/web/README_web.md`                                          | Documented scoped terminal drawer and isolation capability panel behavior                                                           |
| `package.json`                                                    | Added `node-pty` and updated `workerd` allow-scripts metadata plus root version                                                     |
| `package-lock.json`                                               | Recorded dependency and audit repair updates plus root version                                                                      |
| `README.md`                                                       | Updated root version badge                                                                                                          |
| `.spec_system/state.json`                                         | Marked Session 12 complete and cleared current session                                                                              |
| `.spec_system/PRD/phase_19/PRD_phase_19.md`                       | Updated Phase 19 progress to 12/16 sessions and recorded Session 12 completion                                                      |
| `.spec_system/PRD/phase_19/session_12_terminal_and_containers.md` | Marked the Session 12 stub complete                                                                                                 |

***

## Technical Decisions

1. **Scoped terminal output only**: Broad rows, WebSocket events, diagnostics, docs, exports, and execution summaries expose safe labels and attachments; bounded output stays in the selected terminal drawer/session detail.
2. **Manager-owned runtime lifecycles**: PTY sessions, output buffers, timeouts, restart/kill, process disposal, container probes, and isolated spawn readiness stay behind server managers with injectable adapters.
3. **Fail-closed optional dependencies**: `node-pty` is package-managed as optional. Missing or failed PTY support reports structured unavailable posture instead of breaking server startup.
4. **Protocol-first terminal/container metadata**: Shared terminal, container, isolation, fallback, cleanup, and attachment contracts were added before server and web consumers.
5. **Local-only container posture**: Docker and Apple Containers are readiness probes and guarded local spawn paths only; remote tunnels, hosted queues, and Worker command bridges remain out of scope.

***

## Test Results

| Metric           | Value                                  |
| ---------------- | -------------------------------------- |
| Full tests       | 2881 passed, 1 skipped                 |
| Test files       | 245 passed, 1 skipped                  |
| Typecheck        | PASS                                   |
| Format check     | PASS                                   |
| Lint             | PASS                                   |
| Secret scan      | PASS                                   |
| Dependency audit | PASS after `wrangler`/`workerd` repair |
| Coverage         | Not collected by configured commands   |

Validation commands passed:

* `npm run typecheck --workspaces --if-present`
* `npm run format:check`
* `npm run lint`
* `npm test`
* `npm run security:secrets`
* `npm audit --audit-level=moderate`
* `git diff --check`

***

## Lessons Learned

1. Direct terminal execution records need a completion follow-up path after the initial response so long-running PTY sessions do not remain stuck in `executing`.
2. Client response validation must reuse protocol enum parsers for runtime failure fields, not accept raw strings.
3. Adding an optional native PTY dependency requires both package metadata and allow-scripts metadata so enforced installs can build the adapter.
4. Terminal/container redaction has to be checked independently at protocol, manager, route, WebSocket, store, and UI layers.

***

## Future Considerations

Items for future sessions:

1. Continue keeping collaboration, channel, metrics, notification, and documentation work behind explicit protocol contracts before server/web behavior changes.
2. Add richer terminal/container operator affordances only if they preserve scoped output, bounded summaries, idempotency, cleanup, and local-only execution boundaries.
3. Keep remote access tunnels, hosted execution, Worker command transfer, and durable terminal transcript storage deferred until separate threat models, tests, and docs exist.

***

## Session Statistics

* **Tasks**: 25 completed
* **Files Created**: 13 source/test deliverables plus session artifacts
* **Files Modified**: 33 tracked source/docs/package/spec files before this summary
* **Tests Added**: Protocol, server manager, route, executor, diagnostics, web API, store, view-model, and component coverage
* **Blockers**: 0 unresolved


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