# BRIEFING — 2026-10-01T07:16:00Z

## Mission
Adversarially and empirically verify Milestone 2 Iteration 2 combat feel, dodge roll i-frames (Huyễn Ảnh Bộ), 3-charge pool replenishment, ghost trails, and 64-slot Ring Buffer DamageNumberPool integration.

## 🔒 My Identity
- Archetype: empirical challenger
- Roles: critic, specialist
- Working directory: c:\Projects\FreeExile\.agents\teamwork\challenger_m2_2_gen4b
- Original parent: 8412af23-c7a8-41f5-aef2-b2a602fcfaf5
- Milestone: Milestone 2 Iteration 2 Gate Replacement
- Instance: 1 of 1

## 🔒 Key Constraints
- Review-only — do NOT modify implementation code directly (write tests/verification harnesses or stress harnesses if needed)
- Must empirically execute all tests and verification scripts
- Require hard evidence before approving or requesting changes

## Current Parent
- Conversation ID: 8412af23-c7a8-41f5-aef2-b2a602fcfaf5
- Updated: 2026-10-01T07:15:11Z

## Review Scope
- **Files to review**:
  - `c:\Projects\FreeExile\.agents\teamwork\ORIGINAL_REQUEST.md` (§ 2026-10-01T00:31:10Z)
  - `c:\Projects\FreeExile\PROJECT.md`
  - `c:\Projects\FreeExile\.agents\teamwork\worker_m2_2_gen3\handoff.md`
  - `client/src/renderer/combat_feedback_system.ts`
  - `client/src/renderer/damage_number_pool.ts`
  - `client/src/renderer/ghost_trail_renderer.ts`
  - `client/src/entities/player_controller.ts`
  - `server/world/combat_engine.py`
  - `tests/unit/test_m2_animation_and_combat_feel.py`
  - `tests/unit/test_challenger_m2_adversarial.py`
  - `tests/e2e/test_poe2_ui_animation_vfx_e2e.py`
- **Review criteria**: Empirical correctness, edge-case resilience, performance/allocation guarantees, leak prevention.

## Key Decisions Made
- [2026-10-01T07:16:00Z] Initialized challenger workspace. Will read context files, run existing test suites, and write an empirical adversarial stress harness.

## Artifact Index
- `c:\Projects\FreeExile\.agents\teamwork\challenger_m2_2_gen4b\DISPATCH.md` — Incoming dispatch message
- `c:\Projects\FreeExile\.agents\teamwork\challenger_m2_2_gen4b\BRIEFING.md` — Persistent situational memory
- `c:\Projects\FreeExile\.agents\teamwork\challenger_m2_2_gen4b\progress.md` — Liveness heartbeat and progress tracking
- `c:\Projects\FreeExile\.agents\teamwork\challenger_m2_2_gen4b\handoff.md` — Final verification report and verdict

## Attack Surface
- **Hypotheses tested**:
  - H1: Dodge roll i-frame window is exactly 250ms and rejects damage during this window.
  - H2: 3-charge pool replenishment timing enforces 4.0s cooldown per charge and prevents negative or >3 charges.
  - H3: Ghost trail rendering correctly manages lifetime, alpha, and tinting without memory growth.
  - H4: 64-slot Ring Buffer DamageNumberPool handles overflow, wraps cleanly, scales 1.6 -> 1.0, and expires without leaks.
- **Vulnerabilities found**: [None yet]
- **Untested angles**: [Investigating]

## Loaded Skills
- None required initially; using empirical Python/TypeScript test harnesses.