Forensic Integrity Audit & Adversarial Review Report

Agent: auditor_gate_1 Audit Target: HAD Digital MVP Skeleton & Standalone Binary (MVP/, 04_Build/, dist/HAD Digital.exe, 05_Test/) Integrity Mode: benchmark (per ORIGINAL_REQUEST.md) Audit Date: 2026-09-05T11:08:00Z Verdict: CLEAN (Zero Integrity Violations Detected)

1. Forensic Audit Report

Work Product: MVP/ (pure Python backend + vanilla frontend), 04_Build/ (PyInstaller specification and build automation), dist/HAD Digital.exe (10,250,591 bytes standalone binary), 05_Test/ (complete test verification suites) Profile: General Project Verdict: CLEAN

Phase Results

Hardcoded Output Detection: PASS — Zero hardcoded return values, zero simulated test strings, zero mock bypasses found across MVP/.

Facade Detection: PASS — Real business logic across all modules; zero dummy return <constant>, empty pass, or placeholder stub classes in core pathways.

Pre-populated Artifact Detection: PASS — Zero pre-existing .log, *result*, or *output* artifacts detected in the workspace prior to audit test runs.

Dependency Audit (Benchmark Mode): PASS — MVP/ backend relies strictly on Python standard library modules (http.server, sqlite3, hashlib, json, uuid, secrets, urllib, threading, datetime). Zero third-party web or ORM frameworks (no Flask, Django, FastAPI, SQLAlchemy).

Authentication & Cryptographic Hashing: PASS — Authentic hashlib.scrypt key derivation (N=16384, r=8, p=1, dklen=64) with cryptographically secure 32-byte hex salts (secrets.token_hex(32)).

Embedded Database Architecture: PASS — Authentic disk-backed SQLite database with WAL mode (PRAGMA journal_mode=WAL), foreign keys (PRAGMA foreign_keys=ON), 8 relational tables, and active indexes.

CTCAE v5.0 Grading Engine: PASS — Genuine algorithmic rule evaluation over 12 oncology symptoms using numeric/qualitative thresholds loaded from ctcae_rules.json, flagging provisional status for grade >= 2.

Tiered Alert Routing: PASS — Authentic routing matrix: Grade 1 (routine/timeline only), Grade 2 (urgent alert), Grade 3-5 (emergency alert) with automated clinician message dispatch.

Standalone Executable Bundling: PASS — dist/HAD Digital.exe is a genuine PyInstaller single-file PE executable (10.25 MB) bundling Python 3 runtime and static assets, executing with zero host machine dependencies in scrubbed environments.

Verification Harness Independence: PASS — 05_Test/verify_mvp.py and 05_Test/test_e2e_tier*.py execute genuine HTTP network requests asserting against live server responses and direct SQLite disk state; zero monkey-patching or mocking.

2. Adversarial Review & Stress-Test Results

Challenge Summary

Overall Risk Assessment: LOW

Challenge Dimension	Stress-Test Scenario	Expected Behavior	Actual Behavior	Result
Path Traversal Defenses	Injected `..`, encoded `%2e%2e`, `%2f`, backslash `..\..` targeting `app.py`, `had.db`, and `win.ini` via `/static/`	Deny access with HTTP 400/403/404	10 out of 10 attacks blocked cleanly	PASS
Brute-Force & Lockout Durability	5 consecutive invalid login attempts followed by valid credentials; server process killed and restarted	Account locked for 30 minutes; lockout state persisted in SQLite across restart	Account locked on attempt 6; persisted across restart; unaffected users continue logging in	PASS
SQL Injection Resilience	Tautology `' OR '1'='1`, comment `admin'--`, drop table `Normal note'); DROP TABLE users; --`	Neutralized by parameterization	Queries safely handled; table intact with count >= 10	PASS
Concurrency Under Load	25 concurrent threads firing simultaneous read and write requests against standalone `.exe`	Handled with SQLite WAL mode and busy timeout without `database is locked`	25/25 requests completed in 0.65s (15 writes committed, 10 reads OK)	PASS
Port Conflict Handling	Launching executable on a port artificially held by an active TCP listener	Fail fast with non-zero exit code and socket bind error in stderr	Process exited with code 1 and logged `[WinError 10013]` / socket error	PASS

Forensic Deep-Dive: Investigation of `04_Build/server.py`

During forensic static scanning, grep detected the term # Mock grading logic (to be replaced by CTCAE engine) in 04_Build/server.py (lines 52-53).

Forensic Inspection: A comprehensive analysis was conducted on 04_Build/HAD Digital.spec, 04_Build/build_exe.py, and the PyInstaller compilation table of contents (04_Build/build/HAD Digital/Analysis-00.toc, PYZ-00.toc, and xref-HAD Digital.html).

Empirical Finding: 04_Build/server.py is an unreferenced, standalone early scratch prototype from initial project scaffolding. The actual compiled application is strictly built from MVP/app.py (referenced on line 29 of 04_Build/HAD Digital.spec and line 18 of xref-HAD Digital.html), which exclusively uses the genuine MVP/ctcae_engine.py and MVP/database.py. 04_Build/server.py is not bundled into dist/HAD Digital.exe and is not imported by any test or runtime script.

3. 5-Component Handoff Report

1. Observation

Source Code & Architecture:

MVP/app.py (694 lines): Uses Python's built-in http.server.ThreadingHTTPServer with HADRequestHandler. Endpoints for /api/login, /api/logout, /api/whoami, /api/patients, /api/reports, /api/grades, /api/alerts, /api/timeline, /api/messages, /api/export/summary, /api/audit-log, /api/symptoms, /api/guidance, /api/chat.

MVP/database.py (325 lines): SQLite manager configuring PRAGMA journal_mode=WAL, PRAGMA foreign_keys=ON, PRAGMA busy_timeout=5000. Tables: users, patients, episodes, treatment_plans, toxicity_reports, toxicity_grades, alerts, messages, timeline_events, audit_log, plus 14 performance indexes.

MVP/user_store.py (214 lines): Uses secrets.token_hex(32) for salt generation and hashlib.scrypt(password.encode("utf-8"), salt=salt_bytes, n=2**14, r=8, p=1, dklen=64).hex() for password hashing. Enforces 5-failure lockout.

MVP/ctcae_engine.py (209 lines): Loads MVP/data/ctcae_rules.json (12 oncology symptoms). Evaluates numeric/qualitative bounds. Auto-flags provisional = True for grade >= 2.

MVP/alert_engine.py (297 lines): Implements ALERT_ROUTING table (Grade 1 -> routine/timeline, Grade 2 -> urgent, Grade 3-5 -> emergency). Inserts into alerts, timeline_events, and messages.

MVP/static/: index.html (16 lines, zero external CDN scripts), app.css (370 lines, responsive CSS variables), app.js (599 lines, vanilla JS SPA).

Empirical Test Execution:

python 05_Test/verify_mvp.py --source: Exited with code 0. All 10 verification steps PASSED.

python 05_Test/verify_mvp.py --exe: Exited with code 0. All 10 verification steps PASSED against dist/HAD Digital.exe.

pytest 05_Test/test_e2e_tier1.py 05_Test/test_e2e_tier2.py 05_Test/test_e2e_tier3.py 05_Test/test_e2e_tier4.py 05_Test/test_e2e_tier5_adversarial.py: Exited with code 0. 94 passed out of 94 tests in 9.53 seconds.

python 05_Test/test_empirical_gate2.py: Exited with code 0. 16 passed out of 16 probes across all 5 verification gates.

Standalone Binary Analysis:

dist/HAD Digital.exe size is 10,250,591 bytes (< 20 MB constraint).

Executable header inspection: PE signature present, MZ magic present, PyInstaller archive signature present.

Launched in isolated environment with all Python environment variables (PYTHON*, VIRTUAL_ENV, CONDA) scrubbed: server started, bound dynamically, and responded with HTTP 200 {"authenticated": False} to /api/whoami.

2. Logic Chain

From Observation 1, the codebase in MVP/ utilizes only the Python standard library, satisfying the strict requirements of benchmark integrity mode ("language standard library only").

From Observation 1 and empirical testing, password authentication uses authentic scrypt key derivation and verifies credentials against SQLite. An invalid password fails authentication (HTTP 401), while a correct password issues a cryptographic session cookie (HAD_SESSION).

From Observation 1 and direct SQLite queries, report submission executes real SQL INSERT statements into disk-backed tables toxicity_reports and toxicity_grades.

From Observation 1 and 2, clinician login succeeds, and querying /api/timeline?patient_id=1 retrieves the submitted report directly from the SQLite database.

From Observation 3, dist/HAD Digital.exe is a standalone compiled executable containing the embedded Python runtime, static frontend, and SQLite database engine, capable of running independently without Python installed on the host machine.

Therefore, the implementation authentically satisfies all requirements (R1, R2, R3) and acceptance criteria of ORIGINAL_REQUEST.md without any integrity violations.

3. Caveats

Early Scaffolding Artifact: The file 04_Build/server.py contains mock references from early design phases. It is unlinked, excluded from the build specification, and not present in dist/HAD Digital.exe. To maintain clean repository hygiene, this file could eventually be archived or removed, but its presence outside MVP/ does not impact runtime integrity.

Operating System Dependency: Standalone binary testing was conducted on Windows (x86_64), matching the target deployment OS specified in ORIGINAL_REQUEST.md.

4. Conclusion

The HAD Digital MVP codebase, build scripts, test suites, and standalone compiled executable (dist/HAD Digital.exe) are authentic, robust, and completely free of integrity violations, dummy facades, or hardcoded test returns. The final forensic verdict is CLEAN.

5. Verification Method

To independently reproduce and verify this audit:

Run Acceptance Criteria Programmatic Verification (Source):

   python 05_Test/verify_mvp.py --source

Run Acceptance Criteria Programmatic Verification (Standalone .exe):

   python 05_Test/verify_mvp.py --exe

Run Comprehensive E2E Test Suite (Tiers 1-5):

   pytest 05_Test/test_e2e_tier1.py 05_Test/test_e2e_tier2.py 05_Test/test_e2e_tier3.py 05_Test/test_e2e_tier4.py 05_Test/test_e2e_tier5_adversarial.py -v

Run Empirical Gate 2 Challenge Harness:

   python 05_Test/test_empirical_gate2.py

Inspect Standalone Binary Properties:

   (Get-Item "dist/HAD Digital.exe").Length

Confirm file size is approximately 10.25 MB and executes without host Python dependencies.