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.

.env.example

@@ -1,13 +1,13 @@
-# Copy this file to .env and fill in the values
-
-# openrouter.ai API key
-OPENROUTER_API_KEY=
-
-# JWT secret for signing tokens (generate with: python -c "import secrets; print(secrets.token_hex(32))")
-JWT_SECRET=
-
-# Path to DuckDB database file
-DB_PATH=data/app.db
-
-# Log level (DEBUG, INFO, WARNING, ERROR)
-LOG_LEVEL=INFO
+# Copy this file to .env and fill in the values
+
+# openrouter.ai API key
+OPENROUTER_API_KEY=
+
+# JWT secret for signing tokens (generate with: python -c "import secrets; print(secrets.token_hex(32))")
+JWT_SECRET=
+
+# Path to DuckDB database file
+DB_PATH=data/app.db
+
+# Log level (DEBUG, INFO, WARNING, ERROR)
+LOG_LEVEL=INFO