# BRIEFING — 2026-10-01T21:46:30Z

## Mission
Perform a strict, independent forensic integrity audit on Milestone M4 deliverables (Fog of War, Visual Shroud & Minimap HUD) and deliver an authoritative binary verdict (CLEAN or INTEGRITY VIOLATION).

## 🔒 My Identity
- Archetype: forensic_auditor
- Roles: critic, specialist, auditor
- Working directory: c:\Projects\FreeExile\.agents\teamwork\auditor_m4_1
- Original parent: 1cc48fc5-ce57-4f48-8964-24cab4bfcacc
- Target: Milestone M4 (Fog of War & Minimap HUD)

## 🔒 Key Constraints
- Audit-only — do NOT modify implementation code
- Trust NOTHING — verify everything independently
- Non-negotiable binary veto: CLEAN or INTEGRITY VIOLATION
- Strictly adhere to user integrity mode (Development Mode per ORIGINAL_REQUEST.md)
- Prohibit hardcoded test results, facade implementations, fabricated verification outputs, and self-certifying tests

## Current Parent
- Conversation ID: 1cc48fc5-ce57-4f48-8964-24cab4bfcacc
- Updated: not yet

## Audit Scope
- **Work product**: Milestone M4 deliverables:
  - `client/webapp/js/ui/war_fog.js`
  - `client/webapp/js/ui/war_fog_renderer.js`
  - `client/webapp/js/ui/minimap_hud.js`
  - `client/webapp/index.html`
  - `client/webapp/js/engine/world_renderer.js`
  - `client/webapp/js/engine/entity_renderer.js`
  - `client/webapp/js/engine/monster_system.js`
  - `tests/unit/test_fog_and_minimap.py`
- **Profile loaded**: General Project (Development Mode)
- **Audit type**: forensic integrity check & adversarial review

## Audit Progress
- **Phase**: reporting
- **Checks completed**:
  - Phase 1: Static analysis & non-cheating verification (PASS)
  - Phase 2: Line count & hygiene enforcement (PASS - all files within caps)
  - Phase 3: Independent execution verification (PASS - all test suites pass)
  - Phase 4: Adversarial stress testing (PASS - 7/7 edge-case tests pass)
- **Checks remaining**:
  - Final full unit suite confirmation
  - Write handoff.md with binary verdict
  - Send message to parent
- **Findings so far**: CLEAN — zero integrity violations, genuine implementation.

## Key Decisions Made
- Confirmed ground truth from ORIGINAL_REQUEST.md: R4 Fog of War (Client-Side) & Minimap HUD under Development Mode.
- Verified empirical bit-exact packing of 120x90 grid into 1,354 bytes (1.766 KB Base64).
- Verified genuine 2-pass batched diamond culling and radial vignette in war_fog_renderer.js.
- Verified 30 Hz throttling and complete pause freezing in MinimapHUD.

## Artifact Index
- `c:\Projects\FreeExile\.agents\teamwork\auditor_m4_1\DISPATCH.md` — Audit assignment
- `c:\Projects\FreeExile\.agents\teamwork\auditor_m4_1\BRIEFING.md` — Situational awareness
- `c:\Projects\FreeExile\.agents\teamwork\auditor_m4_1\progress.md` — Liveness heartbeat
- `c:\Projects\FreeExile\.agents\teamwork\auditor_m4_1\adversarial_stress_check.js` — Independent Node.js adversarial test harness

## Attack Surface
- **Hypotheses tested**:
  - Out-of-bounds vision updates -> Handled gracefully without throw or memory corruption.
  - Huge vision radius (100) -> Correctly clamps to grid boundaries.
  - Teleport decay -> Prior tiles correctly demote from VISIBLE (2) to EXPLORED_FOGGED (1).
  - Corrupt/truncated Base64 -> Unpack fails safely without crashing.
  - 120x90 grid bit-packing -> 100% bit preservation under 2.0 KB budget (1.766 KB).
  - Non-square / extreme aspect ratios -> Minimap projection math strictly bounds inside 120x80 canvas.
  - 30 Hz mobile throttling -> Limits renders to ~30 calls/second at 120 FPS; pauses completely when isGamePaused is true.
- **Vulnerabilities found**: None
- **Untested angles**: None remaining in M4 scope

## Loaded Skills
- None