<reusable-compact filename="ARCHITECTURE.md"> Flask app factory: `from app import create_app`; supports isolated overrides including `TESTING` and `DATABASE`. HTTP routes live in `app.routes`; SQLite access is confined to typed `app.persistence`; templates/static assets live under `app/`; tests use pytest; `bin/test.sh` runs the complete suite. Root `/` must return 200, and independent app instances must not share state. </reusable-compact> RESULT: SUCCESS FILES CHANGED: - .env.example - .gitignore - app/__init__.py - app/persistence.py - app/routes.py - app/templates/base.html - app/templates/index.html - app/static/css/style.css - bin/test.sh - config.py - pyproject.toml - pytest.ini - run.py - tests/conftest.py - tests/test_architecture.py - tests/test_routes.py - uv.lock SUMMARY: Implemented the Flask application factory, isolated SQLite persistence boundary, route registration, templates, configuration, tests, and POSIX test launcher. `sh bin/test.sh` passes all 5 tests; Ruff also passes. BLOCKERS: - None
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