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.

backend/app/models/auth.py

@@ -1,22 +1,22 @@
-"""Pydantic schemas for authentication endpoints."""
-from pydantic import BaseModel, EmailStr
-
-
-class RegisterRequest(BaseModel):
-    email: EmailStr
-    password: str
-
-
-class LoginRequest(BaseModel):
-    email: EmailStr
-    password: str
-
-
-class TokenResponse(BaseModel):
-    access_token: str
-    refresh_token: str
-    token_type: str = "bearer"
-
-
-class RefreshRequest(BaseModel):
-    refresh_token: str
+"""Pydantic schemas for authentication endpoints."""
+from pydantic import BaseModel, EmailStr
+
+
+class RegisterRequest(BaseModel):
+    email: EmailStr
+    password: str
+
+
+class LoginRequest(BaseModel):
+    email: EmailStr
+    password: str
+
+
+class TokenResponse(BaseModel):
+    access_token: str
+    refresh_token: str
+    token_type: str = "bearer"
+
+
+class RefreshRequest(BaseModel):
+    refresh_token: str