style: standardize string formatting and improve readability across multiple files

- Refactored string formatting in various files to use consistent double quotes.
- Improved readability by adding newlines in function definitions and method calls.
- Cleaned up unnecessary imports and ensured proper spacing for better code clarity.
- Updated management commands and context processors for consistent formatting.
- Enhanced the overall maintainability of the codebase by adhering to PEP 8 guidelines.
- Applied Ruff linting and formatting

manage.py

@@ -1,11 +1,15 @@
 #!/usr/bin/env -S uv run
 """Django's command-line utility for administrative tasks."""
+
 import os
 import sys
 
+
 def main():
     """Run administrative tasks."""
-    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "pkmntrade_club.django_project.settings")
+    os.environ.setdefault(
+        "DJANGO_SETTINGS_MODULE", "pkmntrade_club.django_project.settings"
+    )
     sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
     try: