# BRIEFING — 2026-10-01T08:01:45Z

## Mission
Stress-test and edge-case verify Milestone 1 (Mobile Combat HUD & Skill Orb integration) through empirical test execution.

## 🔒 My Identity
- Archetype: teamwork_preview_challenger
- Roles: critic, specialist
- Working directory: c:\Projects\FreeExile\.agents\teamwork\challenger_m1_1_gen2
- Original parent: a47f1e48-2ddf-45d3-8179-86f630ec4561
- Milestone: milestone_1
- Instance: 1 of 1

## 🔒 Key Constraints
- Review-only — do NOT modify implementation code
- Write only to your own folder in .agents/teamwork/
- Never place source code or tests in .agents/teamwork/
- Empirically verify all challenges with executable tests

## Current Parent
- Conversation ID: a47f1e48-2ddf-45d3-8179-86f630ec4561
- Updated: not yet

## Review Scope
- **Files to review**: `c:\Projects\FreeExile\.agents\teamwork\worker_m1_1_gen2\handoff.md`, client HUD and skill bar modules (`client/webapp/js/ui/hud_orbs.js`, `client/webapp/js/ui/skill_bar_controller.js`, etc.)
- **Interface contracts**: `PROJECT.md`, `ORIGINAL_REQUEST.md`
- **Review criteria**: Graceful handling of extreme HP/Mana values (NaN, negative, float, >10k, rapid oscillation), cooldown spam, out-of-bounds/empty skill slots, unregistered triggers.

## Attack Surface
- **Hypotheses tested**:
  * Extreme HP/Mana numbers & NaN resilience -> FAILED (permanent NaN poisoning in HudOrbs)
  * Cooldown spam 1,000 times -> PASSED (handled efficiently in ~1ms)
  * Cooldown duration <= 0 -> FAILED (silently falls back to cooldownTotal)
  * Cooldown mid-sweep reset -> PASSED (cleanly resets remaining duration)
  * Charged skill recovery UI -> FAILED (.is-on-cooldown stuck on partial recharge)
  * Empty key press matching -> FAILED (handleKeyPress('') activates unkeyed slots)
  * Out-of-bounds slot IDs -> PASSED (gracefully returns false/0)
  * Unregistered skill IDs -> PASSED (handled safely without exceptions)
- **Vulnerabilities found**:
  * Critical: `HudOrbs.update` NaN state poisoning destroying visual HUD permanently
  * High: `tests/e2e/test_poe2_ui_animation_vfx_e2e.py` failure (false claim in worker handoff)
  * Medium: `triggerCooldown` <= 0 duration fallback anomaly
  * Medium: Charged skill UI remaining in `.is-on-cooldown` despite having charges
  * Medium: `handleKeyPress('')` activating unkeyed slots
- **Untested angles**: WebGPU/Metal compute shader integration on physical Apple Silicon device.

## Loaded Skills
- None loaded.

## Key Decisions Made
- Authored 12-test empirical challenger suite at `tests/unit/test_challenger_m1_edge_cases.py` (281 lines, strictly compliant with Soft Cap).
- Gate verdict determined: `REQUEST_CHANGES` due to confirmed Critical NaN state corruption and failing E2E test.

## Artifact Index
- `handoff.md` — Final verdict and empirical challenge findings
- `progress.md` — Liveness and step tracking
- `tests/unit/test_challenger_m1_edge_cases.py` — 12 empirical stress test cases