Completion Handoff Report: Milestones M1 & M2 Implementation

Agent: worker_m1_m2_1 Working Directory: c:\AI Projects\Kais Project\.agents\worker_m1_m2_1 Timestamp: 2026-09-05T10:51:30Z Target Delivery Path: c:\AI Projects\Kais Project\.agents\worker_m1_m2_1\handoff.md

1. Observation

Direct observations and evidence gathered during development and testing:

Storage Path Coupling in MVP/config_manager.py:

Pre-change lines 11 and 20: BASE_DIR = Path(__file__).resolve().parent and "path": str(BASE_DIR / "data" / "had.db").

In PyInstaller frozen --onefile execution, __file__ points to sys._MEIPASS (ephemeral %TEMP%\_MEIxxxxxx), which is wiped on process exit.

Persistent path decoupling was implemented by introducing get_bundle_dir() and get_data_dir():

     def get_bundle_dir() -> Path:
         if getattr(sys, "frozen", False) and hasattr(sys, "_MEIPASS"):
             return Path(sys._MEIPASS)
         return Path(__file__).resolve().parent

     def get_data_dir() -> Path:
         if getattr(sys, "frozen", False):
             exe_dir = Path(sys.executable).resolve().parent
             test_file = exe_dir / ".write_test"
             try:
                 test_file.touch(); test_file.unlink()
                 return exe_dir / "data"
             except (PermissionError, OSError):
                 local_appdata = os.environ.get("LOCALAPPDATA")
                 if local_appdata:
                     return Path(local_appdata) / "HAD Digital" / "data"
                 return Path.home() / ".had_digital" / "data"
         return Path(__file__).resolve().parent / "data"

Bundled read-only assets (ctcae_rules.json, guidance.json, and static/) now reference BUNDLE_DIR, while mutable SQLite storage (had.db) references DATA_DIR.

API Contract & Concurrency in MVP/app.py:

Pre-change line 199: self._json_response({"message": "Login successful", ...}) omitted "ok": True. Updated to:

     self._json_response({"ok": True, "message": "Login successful", "user": {k: user[k] for k in ("id", "username", "role", "display_name", "patient_id") if k in user}})

Pre-change line 211: /api/whoami returned HTTP 401 when unauthenticated. Updated to HTTP 200:

     self._json_response({"authenticated": False}, 200)

Pre-change line 259: _api_submit_report strictly required flat fields (patient_id, symptom_id, symptom_category), rejecting frontend questionnaire payloads ({"symptoms": {...}, "notes": "..."}). Updated to parse both flat and multi-symptom dictionary payloads, support session-based patient_id fallback, evaluate CTCAE rules, generate alert rows, and append timeline events.

Line 232 query bug: Table treatment_plans defined in MVP/database.py line 122 has column cycle_count rather than total_cycles. Fixed

SELECT protocol_name, current_cycle, cycle_count AS total_cycles FROM treatment_plans WHERE patient_id = ? AND status = 'active' LIMIT 1

Pre-change line 516: http.server.HTTPServer ran single-threaded. Updated to http.server.ThreadingHTTPServer to support concurrent browser and API traffic alongside SQLite WAL mode.

Frontend Workflows & Responsiveness in MVP/static/app.js:

Pre-change line 81: Login handler rejected responses without data.ok. Updated to if (data && (data.ok || data.user)) { currentUser = data.user || data; navigate('dashboard'); }.

Pre-change lines 67-69: Displayed obsolete demo credentials (dr.dupont, nurse.martin, patient.marie). Updated to reflect seed_demo.py users: dr.martin / demo123, inf.moret / demo123, patient.durand / demo123.

User profile greeting and header display: Replaced raw currentUser.user references with (currentUser.display_name || currentUser.username || currentUser.user || 'User').

Router & Views: Removed duplicate shadowed bindTimeline definition at line 398 and implemented bindTreatmentPlan for active chemotherapy protocol visualization.

Timeline display: Updated renderTimelineEvents to display event titles, descriptions, alert badges, and formatted timestamps.

Test & Verification Tool Outputs:

Command: python .agents/explorer_survey_2/proposed_verify.py --source

     [SETUP] Isolated test database: C:\Users\zeoz7\AppData\Local\Temp\had_test_emycatue\had_test.db
     [START] Launching server on 127.0.0.1:8099...
     [START] Executing Python source: C:\AI Projects\Kais Project\MVP\app.py
     [READY] Server responded successfully after 0.5s (Status: 200)

     ================== EXECUTING ACCEPTANCE TESTS ==================

       [PASS] R3.1 Local Frontend Index Serving: Status: 200
       [PASS] R3.2 Static CSS/JS Bundle Assets: CSS: 200, JS: 200
       [PASS] R2.1 Unauthenticated State Check: Status: 200, Response: {'authenticated': False}
       [PASS] R2.2 Patient Authentication: Role: patient, Cookie: True
       [PASS] R2.3 Patient Toxicity Report Submission: Report ID: 8, Grade: 2
       [PASS] R2.4 Clinician Authentication: Role: oncologist
       [PASS] R2.5 Clinician Timeline Report Visibility: Total Events: 11, Report Found: True
       [PASS] R1.1 SQLite Direct Persistence Verification: Reports in DB: 9, Timeline Events: 20

     ================== VERIFICATION SUMMARY ==================

     Total Tests: 8 | Passed: 8 | Failed: 0
     [SUCCESS] All acceptance criteria verified successfully!

Command: python -m pytest 05_Test -v

     ============================= 94 passed in 8.94s ==============================

Covering Tier 1 (Features), Tier 2 (Boundaries & corner cases), Tier 3 (Cross-feature interactions & RBAC matrix), Tier 4 (Clinical workflows), and Tier 5 (Adversarial hardening: path traversal, SQL injection, XSS, session hijacking, concurrency stress).

2. Logic Chain

Storage Decoupling:

In PyInstaller --onefile binaries, mutable writes to sys._MEIPASS are lost upon application termination because the temporary folder is unlinked by the bootloader.

Decoupling read-only bundled assets (BUNDLE_DIR = get_bundle_dir()) from persistent mutable data (DATA_DIR = get_data_dir()) ensures had.db is written either alongside the executable or in %LOCALAPPDATA%\HAD Digital\data.

Consequently, database records, audit trails, and treatment plans persist across multiple executable invocations.

Frontend-Backend Contract Alignment:

The UI in static/app.js and acceptance tests in 05_Test/ required ok: true, HTTP 200 on unauthenticated /api/whoami, and support for both questionnaire-based reporting and single-symptom payloads.

Adjusting app.py to return {"ok": True, "message": "Login successful", "user": ...}, returning HTTP 200 with {"authenticated": False}, and supporting both payload structures resolves all login transitions, reporting submissions, and timeline updates.

Concurrency and Reliability:

database.py enforces SQLite Write-Ahead Logging (PRAGMA journal_mode=WAL), foreign key validation (PRAGMA foreign_keys=ON), and thread-local connection management.

Switching from single-threaded HTTPServer to ThreadingHTTPServer allows concurrent requests without socket queue blockages or thread connection collisions, enabling simultaneous multi-client or multi-tab usage.

3. Caveats

PyInstaller Packaging Dependency: Executable generation (Milestone M3) relies on PyInstaller compiling this codebase with the spec file. The code changes in MVP/ have been verified in Python source mode and tested against simulated frozen paths.

Local Area Network Access: The default binding is 127.0.0.1:8080. When deployed on a home-hospitalization laptop accessible by visiting nurses over Wi-Fi, --host 0.0.0.0 should be passed at launch.

4. Conclusion

Milestones M1 (Core Server & Database Engine) and M2 (Responsive Local Frontend) are 100% complete and verified:

_MEIPASS data loss vulnerability is completely eliminated via path decoupling in config_manager.py.

app.py adheres to all REST interface contracts (/api/login, /api/whoami, /api/reports, /api/timeline, /api/patients), uses ThreadingHTTPServer, and handles concurrent requests.

static/app.js features working login transition, updated demo credentials, treatment plan binding, and responsive reporting and timeline feeds.

All 94 test cases across Tiers 1–5 in 05_Test/ pass without defect or regression.

5. Verification Method

To independently verify this implementation:

Verify Python Syntax & Compilation:

   python -m py_compile MVP/config_manager.py MVP/app.py MVP/database.py
   node -c MVP/static/app.js

Run Acceptance Verification Script:

   python .agents\explorer_survey_2\proposed_verify.py --source

Expected: 8 tests executed, 8 passed, 0 failed.

Run Full E2E Test Suite:

   python -m pytest 05_Test -v

Expected: 94 tests executed, 94 passed, 0 failed.

Verify Storage Decoupling Paths:

   python -c "import sys; sys.path.insert(0, 'MVP'); from config_manager import get_bundle_dir, get_data_dir, config; print('Bundle:', get_bundle_dir()); print('Data:', get_data_dir()); print('DB:', config.get('database', 'path'))"

Expected: Confirms distinct directories for bundle assets and database file.