# FORENSIC AUDIT REPORT — MILESTONE M1 ITERATION 2

**Work Product**: Milestone M1 Iteration 2 (Piecewise EXP Curve, Matrix Schema & Seeder, Progression Benchmarks DB, and E2E Progression Tests)
- `server/world/level_progression_curve.py`
- `server/world/game_design_matrix_service.py`
- `server/world/game_design_matrix_seeder.py`
- `tests/e2e/test_level_progression_e2e.py`
- `data/game_design_matrix.db`

**Profile**: General Project (Integrity Mode: `development` / Forensic Mode)  
**Verdict**: **CLEAN**

---

## 1. Executive Summary

An exhaustive forensic integrity audit was conducted on the Milestone M1 Iteration 2 deliverables. All empirical checks, mathematical constraints, schema guarantees, and adversarial stress tests passed without a single defect or compromise.

1. **Dynamic Mathematical Calculation (No Hardcoding)**: `level_progression_curve.py` dynamically computes experience deltas across all 7 segments using exact continuous mathematical formulas. There are zero pre-computed lookup tables or static fallback constants.
2. **Authentic Schema & DB Storage (No Facades)**: `progression_benchmarks` in `data/game_design_matrix.db` contains exactly 13 columns and 100 rows. Every column is computed from genuine game-design functions and validated against SQLite CHECK constraints.
3. **Rigorous Test Assertions (No Circumvention)**: Line 141 in `tests/e2e/test_level_progression_e2e.py` strictly checks `0.25 <= (delta_99 / total_lifetime) <= 0.35`. All `@pytest.mark.xfail` markers on Feature F02 have been removed, resulting in 24 true positive test passes in the M1 scope.
4. **Independent Security Audit**: `python tools/security/run_independent_security_audit.py` passed with 0 Critical and 0 High vulnerabilities (`AUDIT-72EAA3A8`, PASSED).
5. **Code & Documentation Hygiene**: `python tools/lint/check_code_and_doc_hygiene.py --strict` passed with 100% compliance with Hard Cap thresholds.

---

## 2. Forensic Phase Results

| # | Forensic Check Name | Scope / Target | Verdict | Details |
|---|---------------------|----------------|:-------:|---------|
| 1 | **Hardcoded Output Detection** | `level_progression_curve.py`, `game_design_matrix_seeder.py` | **PASS** | Formulas compute dynamically across all 7 segments. No hardcoded result arrays or fake return values. |
| 2 | **Facade & Stub Detection** | `game_design_matrix_service.py`, `game_design_matrix_seeder.py` | **PASS** | Complete implementation with SQLite connection management, schema migration, 13-column DTO mapping, cycle checks, and integrity queries. |
| 3 | **Pre-Populated Artifacts** | Workspace files | **PASS** | No pre-populated logs or fabricated attestations. Central SQLite DB is generated deterministically by seeder. |
| 4 | **13-Column Schema Verification** | `data/game_design_matrix.db` | **PASS** | Exactly 13 columns present: `level`, `target_exp`, `exp_to_next_level`, `cumulative_exp`, `player_base_hp`, `player_benchmark_dps`, `monster_base_hp`, `monster_base_dps`, `max_affix_tier_allowed`, `death_penalty_ratio`, `level_gap_safe_range`, `level_gap_penalty_exp`, `monster_benchmark_exp`. |
| 5 | **Mathematical Bound Verification** | Level 99->100 Delta Ratio | **PASS** | Delta 99 = 6,296,234,859. Ratio vs 1-98: 35.000000% ($\ge 30\%$). Ratio vs Lifetime: 25.925926% ($25\% - 35\%$). |
| 6 | **Monotonicity Verification** | All 100 Levels | **PASS** | Strict monotonic increase verified for `target_exp`, `cumulative_exp`, and `exp_to_next_level` (levels 1-99). Zero inversions. |
| 7 | **Strict Test Assertion Gate** | `test_level_progression_e2e.py:141` | **PASS** | Line 141 strictly enforces `assert 0.25 <= (delta_99 / total_lifetime) <= 0.35`. Zero loosened bounds. |
| 8 | **Test Suite Execution** | `test_game_design_matrix.py`, `test_level_progression_e2e.py` | **PASS** | Unit tests: 8/8 PASSED. E2E M1 features (F01, F02, F04): 24/24 PASSED. Zero unexpected failures. |
| 9 | **Adversarial Stress Testing** | `challenge_exp_curve.py`, `challenge_progression_benchmarks.py` | **PASS** | EXP Curve: 7/7 PASSED. Database Harness: 45/45 PASSED. Out-of-bounds inputs, types, and CHECK constraints verified. |
| 10 | **Independent Security Audit** | `run_independent_security_audit.py` | **PASS** | 0 Critical, 0 High vulnerabilities. All 4 adversarial vectors mitigated. |
| 11 | **Code & Doc Hygiene Audit** | `check_code_and_doc_hygiene.py --strict` | **PASS** | Zero Hard Cap violations across 522 files. |
| 12 | **Strict Type Check (Mypy)** | M1 files | **PASS** | `Success: no issues found in 4 source files`. |

---

## 3. Empirical Evidence & Tool Outputs

### Evidence A: Database 13-Column Schema and Boundary Inspection
```
Command: python -c "import sqlite3; conn = sqlite3.connect('data/game_design_matrix.db'); cur = conn.cursor(); cur.execute('PRAGMA table_info(progression_benchmarks)'); print('Columns:', [c[1] for c in cur.fetchall()]); cur.execute('SELECT level, exp_to_next_level, cumulative_exp, death_penalty_ratio FROM progression_benchmarks WHERE level IN (1, 98, 99, 100)'); print(cur.fetchall())"
Output:
Columns: ['level', 'target_exp', 'exp_to_next_level', 'cumulative_exp', 'player_base_hp', 'player_benchmark_dps', 'monster_base_hp', 'monster_base_dps', 'max_affix_tier_allowed', 'death_penalty_ratio', 'level_gap_safe_range', 'level_gap_penalty_exp', 'monster_benchmark_exp']
[(1, 600, 0, 0.0), (98, 3330652650, 14658589806, 0.15), (99, 6296234859, 17989242456, 0.25), (100, 0, 24285477315, 0.0)]
```

### Evidence B: Empirical Challenger EXP Curve Verification (7/7 Passed)
```
Command: python .agents/teamwork/challenger_m1_progression_1/challenge_exp_curve.py
Output:
================================================================================
EMPIRICAL CHALLENGER REPORT: LEVEL PROGRESSION EXP CURVE
================================================================================
1. Strict Monotonicity (Memory Curve) -> PASS [OK]
2. Level 1-20 Cumulative EXP Ratio (< 0.1%) -> PASS [OK]
   Details: L20=0.011347%, L21=0.013378%, Lifetime EXP: 24,285,477,315
3. Level 99->100 Delta EXP Ratio -> PASS [OK]
   Details: Delta 99->100: 6,296,234,859. Lifetime EXP: 24,285,477,315.
   Delta / Cum(1-98) = 35.000000% (Req: >= 30.0%). Delta / Lifetime = 25.925926% (Req: 25.0% - 35.0%).
4. Death Penalty Tier Ratios (Memory Curve) -> PASS [OK]
5. Level Gap Penalty Constants (Memory Curve) -> PASS [OK]
6. SQLite DB Persistence & Zero Drift -> PASS [OK]
   Details: Total columns: 13/13. Row count: 100/100. Drift errors: 0.
7. Integer Bounds & Headroom -> PASS [OK]
   Details: Lifetime EXP = 24,285,477,315 fits safely in signed INT64.
================================================================================
OVERALL EMPIRICAL VERDICT: APPROVED
================================================================================
```

### Evidence C: Line 141 Strict Assertion in `tests/e2e/test_level_progression_e2e.py`
```python
135:     def test_f01_exp_curve_pinnacle_softwall_tier7_ratio(self) -> None:
136:         """Level 99->100 delta is >= 30% of total 1-99 EXP and 25-35% of lifetime EXP."""
137:         sum_1_98 = sum(calc_delta_exp(i) for i in range(1, 99))
138:         delta_99 = calc_delta_exp(99)
139:         total_lifetime = sum_1_98 + delta_99
140:         assert delta_99 >= 0.30 * sum_1_98
141:         assert 0.25 <= (delta_99 / total_lifetime) <= 0.35
```

### Evidence D: Unit & E2E Progression Test Runs
```
Command: pytest tests/unit/test_game_design_matrix.py
Output: 8 passed in 0.30s

Command: pytest tests/e2e/test_level_progression_e2e.py -k "test_f01 or test_f02 or test_f04"
Output: 24 passed, 26 deselected in 0.14s
```

### Evidence E: Adversarial Database Benchmark Harness (45/45 Passed)
```
Command: python .agents/teamwork/challenger_m1_progression_2/challenge_progression_benchmarks.py
Output:
======================================================================
 CHALLENGE RESULTS SUMMARY: 45 PASSED, 0 FAILED
======================================================================
VERDICT: ALL ADVERSARIAL STRESS TESTS PASSED WITH 0 DEFECTS.
```

### Evidence F: Independent Security Audit
```
Command: python tools/security/run_independent_security_audit.py
Output:
# BÁO CÁO KIỂM TOÁN AN NINH ĐỘC LẬP (SEC-OPS AUDIT REPORT)
> Audit ID: AUDIT-72EAA3A8
> Phán quyết An ninh: PASSED (0 Critical, 0 High, 0 Medium, 0 Low)
✅ SECURITY RELEASE GATE PASSED: Zero Critical/High vulnerabilities detected.
```

### Evidence G: Strict Code & Documentation Hygiene
```
Command: python tools/lint/check_code_and_doc_hygiene.py --strict
Output:
================================================================================
✅ KẾT QUẢ: TOÀN BỘ MÃ NGUỒN VÀ TÀI LIỆU TUÂN THỦ HARD CAP HYGIENE!
================================================================================
```

---

## 4. Final Verdict

**FINAL VERDICT: CLEAN**

All requirements from `ORIGINAL_REQUEST.md` (§R1, §R4 under `## 2026-10-01T00:40:44Z`) and the dispatch directives have been satisfied with mathematical precision, authentic data persistence, and rigorous empirical validation.