# BRIEFING — 2026-10-04T04:19:00Z

## Mission
Independent objective review and adversarial challenge for Milestone 2 (4D BIM Simulation & Interactive Site Diary Dock), specifically focusing on Site Diary Dock (F9 & F10), Zero Occlusion, and contract dataset integration.

## 🔒 My Identity
- Archetype: teamwork_preview_reviewer
- Roles: reviewer, critic
- Working directory: c:\Projects\DSCons\.agents\teamwork\teamwork_preview_reviewer_m2_2
- Original parent: befbfc73-5853-4a94-b280-61f27b35aa73
- Milestone: Milestone 2 (4D BIM Simulation & Interactive Site Diary Dock)
- Instance: 2 of 2

## 🔒 Key Constraints
- Review-only — do NOT modify implementation code
- Evidence-based review; verify claims independently
- Check for integrity violations (hardcoded test results, facade/dummy code, shortcuts)
- Check zero sidebar occlusion (right: 390px)
- Check real-time sync with SITE_DIARY_SCHEDULE_90_DAYS dataset (< 2ms)
- Never modify code outside our assigned directory

## Current Parent
- Conversation ID: befbfc73-5853-4a94-b280-61f27b35aa73
- Updated: 2026-10-04T04:19:00Z

## Review Scope
- **Files to review**: app/static/bim/index.html, tools/verification/test_ong_den_4d_bim_and_video_export.py
- **Interface contracts**: c:\Projects\DSCons\.agents\teamwork\ORIGINAL_REQUEST.md, c:\Projects\DSCons\.agents\teamwork\teamwork_preview_orchestrator_1\PROJECT.md
- **Review criteria**: Correctness, completeness, zero sidebar occlusion, performance (<2ms), authentic data, integrity

## Review Checklist
- **Items reviewed**:
  - `app/static/bim/index.html` (Site Diary Dock layout, 4 panels, collapsible state, zero occlusion CSS, 4D timeline sync, 90-day grounded contract dataset)
  - `tools/verification/test_ong_den_4d_bim_and_video_export.py` (Checks 5 & 6)
  - `tests/test_architecture_boundary_enforcement.py` (Hexagonal architecture gate)
- **Verdict**: APPROVE
- **Unverified claims**: none (all claims verified with independent automated tests)

## Attack Surface
- **Hypotheses tested**:
  1. *Zero Sidebar Occlusion*: Verified across 5 viewports (1920x1080, 1600x900, 1440x900, 1280x720, 1024x768). Overlap is strictly 0.0px.
  2. *Sync Latency Performance*: Benchmarked `renderSiteDiaryDock(day)` across all 90 days. Max latency 0.400ms (target < 2.0ms), avg latency 0.133ms.
  3. *Collapsible Transitions & Rapid Toggle*: Height transitions 195px <-> 32px; 40 rapid toggles completed without exception or DOM distortion.
  4. *Dataset Grounding & Integrity*: Audited 90 days of contract data. Volumes progress accurately; Mr. Quyết house safety monitoring and M1-M3 settlement pins verified.
  5. *Boundary Clamping*: Tested days 0, -50, 95, NaN, string "45" - all clamp safely.
  6. *Inline Script Syntax*: Node.js AST check (`node --check`) passed across all 5 inline script tags.
- **Vulnerabilities found**: None. Zero integrity violations, zero console errors, zero uncaught exceptions.
- **Untested angles**: Milestone 3 scope (Canvas MediaRecorder Video Export F11) remains planned for M3.

## Key Decisions Made
- Confirmed full compliance with F9 (Interactive Site Diary Dock), F10 (Real-Time Sync), and Zero Sidebar Occlusion.
- Issued verdict: APPROVE.

## Artifact Index
- c:\Projects\DSCons\.agents\teamwork\teamwork_preview_reviewer_m2_2\DISPATCH.md — Initial dispatch log
- c:\Projects\DSCons\.agents\teamwork\teamwork_preview_reviewer_m2_2\BRIEFING.md — Situational awareness
- c:\Projects\DSCons\.agents\teamwork\teamwork_preview_reviewer_m2_2\progress.md — Liveness heartbeat
- c:\Projects\DSCons\.agents\teamwork\teamwork_preview_reviewer_m2_2\validate_scripts.py — Node.js syntax verification script
- c:\Projects\DSCons\.agents\teamwork\teamwork_preview_reviewer_m2_2\test_adversarial_m2_site_diary.py — Adversarial stress-testing suite
- c:\Projects\DSCons\.agents\teamwork\teamwork_preview_reviewer_m2_2\handoff.md — Final review and handoff report