Fix/pylint cleanup (#8)

* Fix pylint warnings across all 24 Python files in web_server

- Add module, class, and function docstrings (C0114, C0115, C0116)
- Fix import ordering: stdlib before third-party before local (C0411)
- Replace wildcard imports with explicit named imports (W0401)
- Remove trailing whitespace and add missing final newlines (C0303, C0304)
- Replace dict() with dict literals (R1735)
- Remove unused imports and variables (W0611, W0612)
- Narrow broad Exception catches to specific exceptions (W0718)
- Replace f-string logging with lazy % formatting (W1203)
- Fix variable naming: UPPER_CASE for constants, snake_case for locals (C0103)
- Add pylint disable comments for necessary global statements (W0603)
- Fix no-else-return, simplifiable-if-expression, singleton-comparison
- Fix bad indentation in stripe.py (W0311)
- Add encoding="utf-8" to open() calls (W1514)
- Add check=True to subprocess.run() calls (W1510)
- Register Celery task modules via conf.include

* Update `package-lock.json` add peer dependencies

web_server/blueprints/__init__.py

@@ -1,3 +1,7 @@
+"""Flask application factory and blueprint registration."""
+
+from os import getenv
+
 from flask import Flask
 from flask_session import Session
 from flask_cors import CORS
@@ -13,10 +17,8 @@ from blueprints.oauth import oauth_bp, init_oauth
 from blueprints.socket import socketio
 from blueprints.search_bar import search_bp
 
-from celery import Celery
 from celery_tasks import celery_init_app
 
-from os import getenv
 
 def create_app():
     """
@@ -34,16 +36,15 @@ def create_app():
     app.config['GOOGLE_CLIENT_SECRET'] = getenv("GOOGLE_CLIENT_SECRET")
     app.config["SESSION_COOKIE_HTTPONLY"] = True
 
-
     app.config.from_mapping(
-    CELERY=dict(
-        broker_url="redis://redis:6379/0",
-        result_backend="redis://redis:6379/0",
-        task_ignore_result=True,
-        ),
+        CELERY={
+            "broker_url": "redis://redis:6379/0",
+            "result_backend": "redis://redis:6379/0",
+            "task_ignore_result": True,
+        },
     )
     app.config.from_prefixed_env()
-    celery = celery_init_app(app)
+    celery_init_app(app)
 
     #! ↓↓↓ For development purposes only - Allow cross-origin requests for the frontend
     CORS(app, supports_credentials=True)