## 2026-10-04T03:44:45Z
You are teamwork_preview_challenger 2 for Milestone 1 (3D Dimensions & Billboard Annotations).
Working directory: c:\Projects\DSCons\.agents\teamwork\teamwork_preview_challenger_m1_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:
Perform adversarial geometric and WebGL buffer verification for Milestone 1:
1. Write a script to inspect the Three.js scene graph in `app/static/bim/index.html`:
   - Inspect every child in `groupDimensions`: verify exactly 21 `THREE.Sprite` objects and 20 `THREE.LineSegments`.
   - Verify coordinates of dimension endpoints: calculate Euclidean distance $\|\mathbf{P}_B - \mathbf{P}_A\|$ and assert exact match with label values (e.g. 2.5m = 2.50, 3.0m = 3.00, 3.4m = 3.40, 50m = 50.0).
   - Test WebGL canvas captureStream: verify that `canvas.captureStream(30)` draws all 21 sprites into the capture stream.
2. Confirm zero regressions on FPS (FPS > 30).
3. Formulate your verdict: APPROVE or REQUEST_CHANGES.
4. Write your handoff report to: `c:\Projects\DSCons\.agents\teamwork\teamwork_preview_challenger_m1_2\handoff.md`.
5. Send message to parent orchestrator with your verdict.