Refactor Nginx configuration and update project dependencies

- Cleaned up the Nginx configuration for the Coolify deployment, ensuring proper formatting and organization.
- Updated the `pyproject.toml` file to maintain consistent formatting.
- Reformatted the `requirements.txt` file for better readability while keeping the dependencies unchanged.

docs/TESTING.md

@@ -1,19 +1,19 @@
-# Testing Strategy
-
-The FastAPI backend will be tested using a combination of unit and integration tests.
-
-## Unit Tests
-
-- Use `pytest` with `pytest-asyncio` for async endpoint handlers.
-- Mock external dependencies such as the DuckDB connection and the openrouter.ai API.
-
-## Integration Tests
-
-- Use `pytest-flask` to spin up the FastAPI app in a test client.
-- Test full request/response cycles for authentication, user CRUD, and AI generation endpoints.
-- Use an in‑memory DuckDB instance for database tests.
-
-## Test Coverage
-
-- Aim for >80 % coverage on the `app/` package.
-- Generate coverage reports with `pytest-cov`.
+# Testing Strategy
+
+The FastAPI backend will be tested using a combination of unit and integration tests.
+
+## Unit Tests
+
+- Use `pytest` with `pytest-asyncio` for async endpoint handlers.
+- Mock external dependencies such as the DuckDB connection and the openrouter.ai API.
+
+## Integration Tests
+
+- Use `pytest-flask` to spin up the FastAPI app in a test client.
+- Test full request/response cycles for authentication, user CRUD, and AI generation endpoints.
+- Use an in‑memory DuckDB instance for database tests.
+
+## Test Coverage
+
+- Aim for >80 % coverage on the `app/` package.
+- Generate coverage reports with `pytest-cov`.