- Add BackupCode model to db/models.py with user_id FK, code_hash (Argon2), used_at (nullable)
- Add ix_backup_codes_user_id index on backup_codes.user_id
- Add password_must_change BOOLEAN NOT NULL DEFAULT false to User model (ADMIN-01)
- Extend config.py Settings with JWT, SMTP, admin bootstrap, and CORS fields (D-01, D-04, D-09)
- Add env_list_separator=',' for cors_origins env var parsing
- Append PyJWT, pwdlib[argon2], pyotp, aioredis, slowapi to requirements.txt
- Add .env.example entries for SECRET_KEY, ADMIN_EMAIL, SMTP_*, CORS_ORIGINS
- Create migration 0002 adding backup_codes table and password_must_change column
- Add TDD tests for all Task 1 acceptance criteria (7 tests pass)
- Delete backend/data/ tracked files (D-04): flat-file metadata, settings.json,
topics.json, and uploaded files removed from git; backend/data/ added to
.gitignore (empty dir remains on macOS due to ACL — no tracked files remain)
- Prune backend/config.py: remove DATA_DIR, UPLOADS_DIR, METADATA_DIR,
TOPICS_FILE, ensure_data_dirs(); rebase SETTINGS_FILE as derived path from
settings.data_dir (Phase 1 flat-file settings kept per plan decision)
- Prune backend/tests/conftest.py: remove isolated_data_dir autouse fixture
and sync TestClient client fixture; add SQLite type compatibility shim
(visit_INET/JSONB) so in-memory db_session can create tables with
PostgreSQL-specific column types; add live_services_available fixture
- Rewrite backend/tests/test_documents.py: delete all legacy sync tests,
remove all @pytest.mark.xfail markers; async-only document tests now
use async_client + storage service directly for topic wiring
- Rewrite backend/tests/test_health.py: delete legacy sync test_health(client);
remove @pytest.mark.xfail from test_health_checks_postgres_and_minio
- Port backend/tests/test_topics.py to async_client (sync client removed)
- Port backend/tests/test_settings.py to async_client with monkeypatch for
SETTINGS_FILE isolation (settings remain flat-file in Phase 1)