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.

frontend/app/config.py

@@ -1,10 +1,10 @@
-"""Flask frontend configuration."""
-import os
-
-
-class Config:
-    SECRET_KEY = os.getenv(
-        "FLASK_SECRET_KEY", "dev-secret-change-in-production")
-    BACKEND_URL = os.getenv("BACKEND_URL", "http://localhost:12015")
-    SESSION_COOKIE_HTTPONLY = True
-    SESSION_COOKIE_SAMESITE = "Lax"
+"""Flask frontend configuration."""
+import os
+
+
+class Config:
+    SECRET_KEY = os.getenv(
+        "FLASK_SECRET_KEY", "dev-secret-change-in-production")
+    BACKEND_URL = os.getenv("BACKEND_URL", "http://localhost:12015")
+    SESSION_COOKIE_HTTPONLY = True
+    SESSION_COOKIE_SAMESITE = "Lax"