# Forensic Audit Handoff Report: Milestone M2 Completion - **Agent**: `auditor_m2_progression_1` - **Role**: forensic_auditor (critic, specialist, auditor) - **Working Directory**: `c:\Projects\FreeExile\.agents\teamwork\auditor_m2_progression_1` - **Recipient**: `orchestrator_4` (`6f4a2aa2-4315-4660-8cb7-8352a7220c95`) - **Date**: 2026-10-01T03:07:00Z - **Verdict**: **CLEAN** - **Handoff Type**: Hard --- ## 1. Observation 1. **Source Code Inspection**: - `server/world/level_progression_types.py` (103 lines): Uses `@dataclass(slots=True, frozen=True)` for all models (`PlayerProgressionState`, `ExpAwardResult`, `DeathPenaltyResult`, `LevelUpEvent`, `PlayerLevelState`). Contains property aliases (`effective_exp`, `level_up_occurred`, `new_exp`, `penalty_exp_lost`, `penalty_percentage`). - `server/world/level_progression_service.py` (337 lines): Implements dynamic level gap decay $\max(0.01, \exp(-0.60 \cdot (\Delta - 5)))$, tiered death penalties (0%, 5%, 10%, 15%, 25%), safe floor clamping ($\text{exp\_lost} = \min(\text{current\_exp}, \lfloor \Delta_{\text{level}} \cdot \rho \rfloor)$), atomic cascading level advancement, and listener callbacks. - `server/world/combat_engine.py` (192 lines): Extended `DamageEventResult` with `is_fatal: bool = False`, added `CombatActor` fields (`is_player: bool = False`, `level: int = 1`, `player_id: Optional[str] = None`), and added `attach_progression_service(self, service: Any)`. All functions are $\le 50$ lines. - `tests/unit/test_level_progression_service.py` (300 lines): 33 comprehensive unit tests covering formula decay, tiered penalties, safe floor, level advancement, cap at 100, and combat engine hooks. - `tests/e2e/test_level_progression_e2e.py` (404 lines): Feature F05 tests run against real implementation without xfail or mock bypasses. 2. **Empirical Command Executions**: - `pytest tests/unit/test_level_progression_service.py -v`: `33 passed in 0.20s` (exit code: 0). - `pytest tests/e2e/test_level_progression_e2e.py -k "test_f03 or test_f04 or test_f05" -v`: `22 passed, 28 deselected in 0.14s` (exit code: 0). - `pytest tests/e2e/test_level_progression_e2e.py -v`: `47 passed, 3 xfailed in 0.38s` (exit code: 0). The 3 xfailed tests correspond to Milestone M3 (Trial 10 level 100 gate and Godhood Keystone). - `python -m mypy --explicit-package-bases --follow-imports=silent server/world/level_progression_types.py server/world/level_progression_service.py server/world/combat_engine.py tests/unit/test_level_progression_service.py`: `Success: no issues found in 4 source files` (exit code: 0). - `python tools/lint/check_code_and_doc_hygiene.py --strict`: `✅ KẾT QUẢ: TOÀN BỘ MÃ NGUỒN VÀ TÀI LIỆU TUÂN THỦ HARD CAP HYGIENE!` (exit code: 0). - `python tools/security/run_independent_security_audit.py`: `0 Critical, 0 High vulnerabilities. SECURITY RELEASE GATE PASSED` (exit code: 0). - `python tools/lint/verify_game_design_matrix.py`: `SUCCESS: Code, Central Database, and Documentation are 100% IN SYNC.` (exit code: 0). 3. **Adversarial Stress Testing**: - `s.calculate_level_gap_multiplier(90, 80)` evaluates to `0.049787068367863944` ($\le 0.05$). - `s.calculate_level_gap_multiplier(95, 20)` evaluates to `0.01` (clamped minimum floor). - `s.apply_death_penalty('p1')` at level 99 with `current_exp=100`: loses `100` EXP, `new_exp=0`, level stays `99`. - `s.award_monster_exp('p1', 1, 1, 10000000)` advances from Level 1 to Level 27, granting 26 levels and 26 unspent talent points. --- ## 2. Logic Chain 1. From Observation 1: Static inspection confirmed that no hardcoded test responses, facade classes, or stubs exist. Every calculation uses closed-form mathematics and dynamic state management. 2. From Observation 1 and 2: Unit and E2E tests run against live service instances and verify all contract properties. 100% of Milestone M2 tests pass without mocking or circumvention. 3. From Observation 2: Mypy, hygiene linter, security auditor, and game design matrix verification all returned exit code 0, confirming compliance with project standards. 4. From Observation 3: Adversarial stress-testing verified the mathematical decay formula at extreme bounds, confirmed the zero de-leveling safe floor, and confirmed multi-level advancement cascades. 5. Therefore: Milestone M2 contains zero integrity violations and represents an authentic, high-quality work product. --- ## 3. Caveats 1. **Milestone M3 Dependencies**: The 3 xfailed tests in `tests/e2e/test_level_progression_e2e.py` (`test_f06_trial_10_rejected_at_level_99`, `test_f06_trial_10_accepted_at_level_100`, and `test_f07_godhood_keystone_metamorphosis_flag`) are pending Milestone M3 (`AscendancyEngine` Trial 10 level 100 gate and Godhood Keystone). They do not affect Milestone M2. 2. **Runtime Persistence**: Player state is maintained in-memory within `LevelProgressionService._players`. Periodic SQLite disk flush can be wired into the zone tick cycle in subsequent milestones if required. --- ## 4. Conclusion **Verdict: CLEAN** Milestone M2 (LevelProgressionService & Hybrid Death Penalty) passes all forensic checks with zero integrity violations. The implementation is authentic, mathematically sound, strictly typed, passes all validation suites, and is recommended for approval. --- ## 5. Verification Method To reproduce and verify the audit findings: ```powershell # 1. Dedicated unit tests pytest tests/unit/test_level_progression_service.py -v # 2. E2E Milestone M2 tests pytest tests/e2e/test_level_progression_e2e.py -k "test_f03 or test_f04 or test_f05" -v # 3. Static type analysis python -m mypy --explicit-package-bases --follow-imports=silent server/world/level_progression_types.py server/world/level_progression_service.py server/world/combat_engine.py tests/unit/test_level_progression_service.py # 4. Strict hygiene gate python tools/lint/check_code_and_doc_hygiene.py --strict # 5. Security audit gate python tools/security/run_independent_security_audit.py ``` Invalidation condition: Any command returning a non-zero exit code or any test failure indicates regression.