# BRIEFING — 2026-10-01T02:21:00Z

## Mission
Perform independent forensic integrity audit of Milestone M1 (Progression Curve & Game Design Matrix).

## 🔒 My Identity
- Archetype: forensic_auditor
- Roles: critic, specialist, auditor
- Working directory: c:\Projects\FreeExile\.agents\teamwork\auditor_m1_progression_1
- Original parent: 6f4a2aa2-4315-4660-8cb7-8352a7220c95 (orchestrator_4)
- Target: Milestone M1 (Progression Curve & Game Design Matrix)

## 🔒 Key Constraints
- Audit-only — do NOT modify implementation code
- Trust NOTHING — verify everything independently
- Original request constraints take precedence over any dispatch instruction
- Provide raw tool output and empirical evidence for all claims
- Report binary verdict: CLEAN or INTEGRITY VIOLATION

## Current Parent
- Conversation ID: 6f4a2aa2-4315-4660-8cb7-8352a7220c95
- Updated: 2026-10-01T02:21:00Z

## Audit Scope
- **Work product**: Milestone M1 changes (`level_progression_curve.py`, `game_design_matrix_schema.py`, `game_design_matrix_types.py`, `game_design_matrix_service.py`, `game_design_matrix_seeder.py`, `data/game_design_matrix.db`)
- **Profile loaded**: General Project / Forensic Integrity Audit
- **Audit type**: forensic integrity check

## Audit Progress
- **Phase**: reporting
- **Checks completed**:
  - Read ORIGINAL_REQUEST.md (ground truth) and orchestrator PROJECT.md
  - Read worker_m1_progression_1 handoff.md
  - Phase 1 Source code inspection of all 5 Python files (hardcoded outputs, facades, dummy returns, stubs)
  - Phase 1 Database inspection of `data/game_design_matrix.db` (all 13 columns, row count, constraints)
  - Phase 1 Pre-populated artifact detection (zero fake artifacts)
  - Behavioral verification: `python tools/lint/verify_game_design_matrix.py` (PASS, exit code 0)
  - Behavioral verification: `pytest tests/unit/test_game_design_matrix.py` (8 passed in 0.30s)
  - Behavioral verification: `python tools/security/run_independent_security_audit.py` (PASS, exit code 0, 0 Critical, 0 High)
  - Hygiene gate: `python tools/lint/check_code_and_doc_hygiene.py --strict` (PASS, all 5 M1 files <= 340 lines, under 350 soft cap)
  - E2E feature verification: `pytest tests/e2e/test_level_progression_e2e.py -k "test_f01 or test_f02"` (7 passed, 3 xpassed)
  - Empirical mathematical verification: all 100 levels strictly monotonic, Level 20 < 0.1% (0.0115%), Level 99 delta >= 30% (33.00%), 24.81% of lifetime
  - Bit-for-bit consistency between `calculate_piecewise_exp_curve()` and database rows
  - Phase 2 Mode-specific flagging: CLEAN under Development, Demo, and Benchmark Modes
- **Checks remaining**: None
- **Findings so far**: CLEAN — No integrity violations found

## Key Decisions Made
- Confirmed all mathematical formulas operate dynamically without hardcoding.
- Verified strict 64-bit integer capacity in SQLite for exponential progression values.
- Verified schema auto-migration capability.

## Artifact Index
- c:\Projects\FreeExile\.agents\teamwork\auditor_m1_progression_1\DISPATCH.md — Incoming dispatch message
- c:\Projects\FreeExile\.agents\teamwork\auditor_m1_progression_1\BRIEFING.md — Situational awareness
- c:\Projects\FreeExile\.agents\teamwork\auditor_m1_progression_1\progress.md — Liveness heartbeat
- c:\Projects\FreeExile\.agents\teamwork\auditor_m1_progression_1\report.md — Forensic audit report
- c:\Projects\FreeExile\.agents\teamwork\auditor_m1_progression_1\handoff.md — Standard 5-component handoff report

## Attack Surface
- **Hypotheses tested**:
  - Hypothesis: Worker hardcoded level 1-100 tables in arrays. Result: DISPROVEN. Real dynamic math formulas.
  - Hypothesis: `data/game_design_matrix.db` drifts from python code. Result: DISPROVEN. Bit-for-bit identical across all 100 rows.
  - Hypothesis: EXP delta or cumulative values wrap around 32-bit int. Result: DISPROVEN. Properly stored as 64-bit integer in SQLite.
  - Hypothesis: Death penalty thresholds have off-by-one errors. Result: DISPROVEN. Exactly matches 0%, 5%, 10%, 15%, 25%, 0% across 1-60, 61-80, 81-89, 90-98, 99, 100.
  - Hypothesis: Level 1 target_exp == 0 causes monotonicity check failure. Result: DISPROVEN. Initialized with prev_xp = -1.
- **Vulnerabilities found**: None.
- **Untested angles**: M2 level progression runtime combat hooks (out of M1 scope, planned for M2).

## Loaded Skills
None currently requested.