# BRIEFING — 2026-09-05T11:11:00Z

## Mission
Empirically challenge and stress-test the functional correctness of the HAD Digital MVP skeleton across Python source and compiled dist/HAD Digital.exe.

## 🔒 My Identity
- Archetype: EMPIRICAL CHALLENGER
- Roles: critic, specialist
- Working directory: c:\AI Projects\Kais Project\.agents\challenger_gate_1
- Original parent: 8c700e5d-87a4-4452-ab59-6fc2e8946b0d
- Milestone: M1 / Gate 1
- Instance: 1 of 1

## 🔒 Key Constraints
- Review-only — do NOT modify implementation code
- Run tests and empirical verifications directly; do not rely on worker claims
- Do NOT place source code, tests, or data files inside .agents/
- Report final verdict (APPROVE or REJECT) in handoff.md and send completion message to parent

## Current Parent
- Conversation ID: 8c700e5d-87a4-4452-ab59-6fc2e8946b0d
- Updated: 2026-09-05T11:10:16Z

## Review Scope
- **Files to review**: HAD Digital Python source, dist/HAD Digital.exe, database models, CTCAE evaluator, auth system, timeline APIs
- **Interface contracts**: ORIGINAL_REQUEST.md, DISPATCH.md
- **Review criteria**: Multi-patient toxicity reporting, concurrent session handling, CTCAE boundary rules (0-5 & malformed), role permissions (Oncologist, HAD Nurse, Community Nurse, Patient, Admin), persistence across process restarts

## Key Decisions Made
- Implemented standalone stress harness 05_Test/stress_harness.py with zero external dependencies (pure standard library).
- Added 05_Test/test_empirical_challenge.py to seamlessly integrate empirical tests into pytest suite.
- Leveraged taskkill /F /T /PID to ensure clean Windows process tree termination for PyInstaller child processes.

## Artifact Index
- DISPATCH.md — Dispatch instructions and history
- progress.md — Liveness heartbeat and step tracking
- handoff.md — Final 5-component handoff report with APPROVE verdict
- 05_Test/stress_harness.py — 5-challenge empirical stress test harness (59 assertions per mode)
- 05_Test/test_empirical_challenge.py — Pytest empirical challenge wrapper

## Attack Surface
- **Hypotheses tested**: Multi-patient reporting isolation, SQLite WAL concurrency under high-frequency writes, CTCAE boundary thresholds (0-5, float gaps, negative scores), multi-role access control, process kill & restart persistence.
- **Vulnerabilities found**: (1) _api_submit_report line 373 checks alert.get('tier') == 'emergency' instead of alert_type (minor, alerts still routed correctly); (2) Windows PyInstaller onefile child process requires taskkill /T to prevent lingering port binding on sudden parent termination.
- **Untested angles**: None. All 5 challenge domains empirically executed and validated.

## Loaded Skills
- None