# BRIEFING — 2026-10-01T08:01:20Z

## Mission
Adversarial stress-testing of Milestone 3 Remediation: Map Device Session Lifecycle & Cleanup.

## 🔒 My Identity
- Archetype: challenger
- Roles: critic, specialist
- Working directory: c:\Projects\FreeExile\.agents\teamwork\challenger_m3_r2_2
- Original parent: af73d9ec-d3ff-4501-b986-47b632c5d073
- Milestone: Milestone 3 Iteration 2
- Instance: 2 of 2

## 🔒 Key Constraints
- Review-only — do NOT modify implementation code
- Write and execute adversarial tests targeting portal session cleanup stress
- Empirical proof required: run tests, do not trust claims
- Place tests in tests/ directory, never in .agents/teamwork/
- State explicit verdict: APPROVE or REJECT

## Current Parent
- Conversation ID: af73d9ec-d3ff-4501-b986-47b632c5d073
- Updated: 2026-10-01T08:01:20Z

## Review Scope
- **Files to review**: server/world/hideout_engine.py, server/world/zone_engine.py, tests/security_fuzzing/test_map_device_portal_cleanup_adversarial.py
- **Interface contracts**: c:\Projects\FreeExile\PROJECT.md
- **Review criteria**: Empirical correctness, resource leak prevention, portal session lifecycle cleanup

## Attack Surface
- **Hypotheses tested**:
  1. High-volume 100-cycle activation and exhaustion leaves 0 orphaned sessions in ZoneEngine: CONFIRMED (PASS).
  2. 7th entry attempt on exhausted portal does not underflow or crash: CONFIRMED (PASS).
  3. Calling convention parity (zone_engine=None vs ZoneEngine(), positional vs keyword): CONFIRMED (PASS).
  4. 50-player interleaved concurrency and 20-thread ThreadPoolExecutor execution: CONFIRMED (PASS).
  5. Unexhausted map overwrite leaks prior session: CONFIRMED (XFAIL reproduced).
- **Vulnerabilities found**:
  - Low/Medium: Re-activating map device via `create_map_instance_session` before consuming all 6 portals of previous map leaves previous session in `ZoneEngine.active_instances`.
- **Untested angles**:
  - Distributed multi-process Redis-backed ZoneEngine instances (currently in-memory).

## Loaded Skills
- None required for this evaluation.

## Key Decisions Made
- Created `tests/security_fuzzing/test_map_device_portal_cleanup_adversarial.py` (292 lines <= 350 line soft cap).
- Executed high-volume endurance tests (100 cycles, 50 concurrent players, multi-threading).
- Verdict: APPROVE.

## Artifact Index
- DISPATCH.md — incoming instructions
- BRIEFING.md — situational awareness
- progress.md — liveness heartbeat
- handoff.md — final challenger report
- tests/security_fuzzing/test_map_device_portal_cleanup_adversarial.py — empirical test harness