## 2026-10-04T04:13:20Z
You are teamwork_preview_challenger 2 for Milestone 2 (4D BIM Simulation & Interactive Site Diary Dock).
Working directory: c:\Projects\DSCons\.agents\teamwork\teamwork_preview_challenger_m2_2
Workspace root: c:\Projects\DSCons

MANDATORY INPUTS:
- Authoritative requirements: c:\Projects\DSCons\.agents\teamwork\ORIGINAL_REQUEST.md (YOU MUST READ THIS FILE FIRST).
- Project architecture & feature inventory: c:\Projects\DSCons\.agents\teamwork\teamwork_preview_orchestrator_1\PROJECT.md.
- Target modified file: c:\Projects\DSCons\app\static\bim\index.html.
- Engineering directives: c:\Projects\DSCons\.agents\AGENTS.md and c:\Projects\DSCons\GEMINI.md.

YOUR TASK:
Adversarially verify the Site Diary Dock, layout boundaries, and mobile resize guard:
1. Test dock expansion and collapse 50 times: assert dock height toggles between 195px and 32px without layout flickering.
2. Test Zero Occlusion: Measure bounding client rects of `#siteDiaryDock` and `.sidebar`; assert `dockRect.right <= sidebarRect.left` at all times.
3. Test mobile viewport resize down to 375x667: verify `camera.aspect` does NOT produce `NaN` or `Infinity` (verifying Challenger 1's safeguard patch).
4. Run Check 5 and Check 6 in Playwright test runner.
5. Formulate your verdict: APPROVE or REQUEST_CHANGES.
6. Write your handoff report to: `c:\Projects\DSCons\.agents\teamwork\teamwork_preview_challenger_m2_2\handoff.md`.
7. Send message to parent orchestrator with your verdict.