# BRIEFING — 2026-10-01T02:42:00Z

## Mission
Empirically re-challenge database schema and service integration for M1 Iteration 2, validating all 45 stress scenarios across boundary rejection, idempotency, column constraints, in-memory isolation, and auto-migration.

## 🔒 My Identity
- Archetype: empirical_challenger
- Roles: critic, specialist
- Working directory: c:\Projects\FreeExile\.agents\teamwork\challenger_m1_progression_2_gen2
- Original parent: 6f4a2aa2-4315-4660-8cb7-8352a7220c95
- Milestone: M1 Iteration 2
- Instance: 2 of 2 (gen2)

## 🔒 Key Constraints
- Review-only — do NOT modify implementation code
- Run empirical verification directly; do NOT trust claims or logs without reproduction
- Document findings in report.md and handoff.md
- State clear verdict (APPROVE or REQUEST_CHANGES) and send_message to parent

## Current Parent
- Conversation ID: 6f4a2aa2-4315-4660-8cb7-8352a7220c95
- Updated: 2026-10-01T02:42:00Z

## Review Scope
- **Files to review**: `c:\Projects\FreeExile\.agents\teamwork\challenger_m1_progression_2\challenge_progression_benchmarks.py`, `server/world/database.py`, `server/world/game_design_matrix_service.py`, `server/world/game_design_matrix_schema.py`
- **Interface contracts**: `c:\Projects\FreeExile\.agents\teamwork\orchestrator_4\PROJECT.md`, `c:\Projects\FreeExile\.agents\teamwork\ORIGINAL_REQUEST.md` (## 2026-10-01T00:40:44Z)
- **Review criteria**: All 45 stress tests pass 100%, schema consistency, column constraints, in-memory isolation, auto-migration safety.

## Key Decisions Made
- Executed `python .agents/teamwork/challenger_m1_progression_2/challenge_progression_benchmarks.py` -> 45/45 PASSED.
- Executed `python .agents/teamwork/challenger_m1_progression_1/challenge_exp_curve.py` -> 7/7 PASSED.
- Executed lint sync, unit tests, E2E tests, and strict hygiene audit -> 100% PASS.
- Verdict: APPROVE.

## Artifact Index
- report.md — Empirical challenge findings report (45/45 pass breakdown)
- handoff.md — Standard 5-component handoff report

## Attack Surface
- **Hypotheses tested**: Boundary queries (0, 101, -1, 999), invalid types, seeder idempotency (5 runs with zero drift), 14 SQLite CHECK constraints, NOT NULL constraints, PK uniqueness, in-memory lifecycle & isolation, legacy schema auto-migration.
- **Vulnerabilities found**: 0 vulnerabilities found.
- **Untested angles**: Network / multi-worker concurrent combat loops (Milestone M2 scope).

## Loaded Skills
- None