> For the complete documentation index, see [llms.txt](https://faction-os.gitbook.io/faction-os-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://faction-os.gitbook.io/faction-os-docs/.spec_system/archive/sessions/phase05-session04-join-approval-presence-and-reconnect-ux/implementation_summary.md).

# Implementation Summary

**Session ID**: `phase05-session04-join-approval-presence-and-reconnect-ux` **Package**: Cross-package (`apps/web`, `apps/warroom`) **Completed**: 2026-05-30 **Duration**: 1.5 hours

***

## Overview

This session shipped the War Room participation layer around the existing Worker lifecycle: leader approval and rejection, participant presence, bounded reconnect and retry behavior, safe catch-up summaries, and clear leave and disconnect semantics. The web cockpit now surfaces the shipped Worker primitives without promoting hosted identity, trusted erasure, or Session 05 federation features.

The session also closed out its spec metadata by marking validation as PASS, updating the Phase 05 tracker, syncing the master PRD status map, and bumping the repository patch version.

***

## Deliverables

### Files Created

| File                                                                                                     | Purpose                                                      | Lines |
| -------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------ | ----- |
| `.spec_system/specs/phase05-session04-join-approval-presence-and-reconnect-ux/validation.md`             | Validation record for the session closeout                   | \~18  |
| `.spec_system/specs/phase05-session04-join-approval-presence-and-reconnect-ux/IMPLEMENTATION_SUMMARY.md` | Session closeout summary and handoff record                  | \~75  |
| `apps/web/src/lib/warRoomPresence.ts`                                                                    | Roster, approval, reconnect, and catch-up derivation helpers | \~180 |
| `apps/web/src/components/WarRoomRoster.tsx`                                                              | Accessible participant roster UI                             | \~180 |
| `apps/web/src/components/WarRoomApprovalQueue.tsx`                                                       | Leader approval/rejection queue UI                           | \~180 |
| `apps/web/tests/warRoomPresence.test.ts`                                                                 | Helper tests for sorting, labels, and redaction              | \~180 |

### Files Modified

| File                                        | Changes                                                                                           |
| ------------------------------------------- | ------------------------------------------------------------------------------------------------- |
| `.spec_system/state.json`                   | Marked Session 04 complete, cleared `current_session`, and recorded the completion history entry. |
| `.spec_system/PRD/phase_05/PRD_phase_05.md` | Updated progress to 4/7, marked Session 04 complete, and advanced the upcoming session list.      |
| `.spec_system/PRD/PRD.md`                   | Updated the Phase 05 status map to reflect Session 04 as shipped and validated.                   |
| `package.json`                              | Bumped the root project version from `0.1.52` to `0.1.53`.                                        |
| `package-lock.json`                         | Synced the root lockfile version from `0.1.52` to `0.1.53`.                                       |
| `apps/web/src/lib/warRoomClient.ts`         | Added decision helpers, schema validation, and safe error mapping.                                |
| `apps/web/src/store/useWarRoomStore.ts`     | Added participation state, reconnect policy, catch-up summaries, and cleanup logic.               |
| `apps/web/src/lib/warRoomUi.ts`             | Updated lifecycle and decision error copy.                                                        |
| `apps/web/src/components/WarRoomPanel.tsx`  | Integrated Session 04 participation controls and state.                                           |
| `apps/web/tests/warRoomClient.test.ts`      | Added client decision and safe error mapping coverage.                                            |
| `apps/web/tests/warRoomStore.test.ts`       | Added store lifecycle, duplicate-guard, and reconnect coverage.                                   |
| `apps/web/tests/WarRoomPanel.test.tsx`      | Added panel behavior and accessibility coverage.                                                  |
| `apps/web/tests/warRoomTestUtils.ts`        | Extended fake socket helpers for Session 04 cases.                                                |
| `apps/warroom/tests/warroom.test.ts`        | Added focused Worker evidence for approval and catch-up behavior.                                 |
| `apps/web/README_web.md`                    | Updated web boundary notes for shipped Session 04 behavior.                                       |
| `apps/warroom/README_warroom.md`            | Updated Worker boundary notes for shipped Session 04 behavior.                                    |

***

## Technical Decisions

1. **Keep the session cross-cutting**: the implementation spans the web cockpit and Worker evidence, so the closeout stays package-neutral.
2. **Keep Phase 05 in progress**: Session 04 is complete, but the phase still has remaining federation and validation sessions.
3. **Bump the root version**: this session does not have a single package-local version target, so the repository root patch version is the correct update point.

***

## Test Results

| Metric   | Value |
| -------- | ----- |
| Tests    | 51    |
| Passed   | 51    |
| Coverage | N/A   |

***

## Lessons Learned

1. Bounded catch-up and presence state are easier to validate when the UI derivation logic stays in pure helpers.
2. Session closeout is most reliable when validation, phase tracking, and version bumps are updated together.

***

## Future Considerations

Items for future sessions:

1. Session 05 should add redacted federation and cockpit integration.
2. Session 06 should document deployment environment and diagnostics.

***

## Session Statistics

* **Tasks**: 24 completed
* **Files Created**: 6
* **Files Modified**: 15
* **Tests Added**: 5
* **Blockers**: 0 resolved


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