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# Implementation Summary

**Session ID**: `phase06-session01-collaboration-requirements-and-safety-baseline` **Package**: cross-cutting **Completed**: 2026-05-30 **Duration**: 1.6 hours

***

## Overview

This session established the Phase 06 collaboration, isolation, mobile, and accessibility baseline as source-backed documentation. It reconciled the current PRD, UX PRD, Phase 05 closeout, docs, package READMEs, and validation evidence into a routing baseline for later implementation sessions.

The work stayed documentation-first and preserved the local-first boundary. It did not introduce new runtime behavior, hosted dependencies, or executor capabilities.

***

## Deliverables

### Files Created

| File                                                                                                            | Purpose                                                                                               | Lines |
| --------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------- | ----- |
| `.spec_system/PRD/phase_06/collaboration_isolation_safety_baseline.md`                                          | Collaboration, authority, redaction, isolation, sandbox, mobile, accessibility, and deferral baseline | \~190 |
| `.spec_system/PRD/phase_06/phase06_requirement_routing_matrix.md`                                               | Requirement ownership matrix for Sessions 02-07 and Phase 07/08 deferrals                             | \~150 |
| `.spec_system/PRD/phase_06/mobile_accessibility_acceptance_checklist.md`                                        | Mobile, keyboard, pointer, screen-reader, focus, reduced-motion, and no-overlap acceptance checklist  | \~120 |
| `.spec_system/specs/phase06-session01-collaboration-requirements-and-safety-baseline/IMPLEMENTATION_SUMMARY.md` | Session closeout summary                                                                              | \~65  |

### Files Modified

| File                                        | Changes                                                                                                           |
| ------------------------------------------- | ----------------------------------------------------------------------------------------------------------------- |
| `.spec_system/state.json`                   | Marked Phase 06 in progress, cleared the active session, and recorded this session as completed in state history. |
| `.spec_system/PRD/phase_06/PRD_phase_06.md` | Marked Session 01 complete, updated validation/progress fields, and added the completed-session entry.            |
| `.spec_system/PRD/PRD.md`                   | Updated the Phase 06 status map and phase table to reflect Session 01 completion.                                 |
| `package.json`                              | Bumped the repository patch version from `0.1.56` to `0.1.57`.                                                    |

***

## Technical Decisions

1. **Documentation-first baseline**: Phase 06 Session 01 remained a contract and routing session, which kept runtime surfaces stable while later sessions inherit a clearer spec.
2. **Local-first boundary preservation**: The baseline explicitly kept hosted accounts, remote execution, and trusted erasure out of scope so later work cannot accidentally overclaim shipped behavior.

***

## Test Results

| Metric   | Value |
| -------- | ----- |
| Tests    | 0     |
| Passed   | 0     |
| Coverage | N/A   |

***

## Lessons Learned

1. Updating the phase trackers at the same time as the baseline artifacts keeps the PRD, state file, and validation report aligned.
2. For documentation-only sessions, the useful verification is hygiene and consistency checking rather than package-level application tests.

***

## Future Considerations

Items for future sessions:

1. Session 02 should convert the authority baseline into explicit protocol and room identity contracts.
2. Session 03 should tighten collaboration event allowlists and blocked-field handling.

***

## Session Statistics

* **Tasks**: 18 completed
* **Files Created**: 4
* **Files Modified**: 4
* **Tests Added**: 0
* **Blockers**: 0 resolved


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