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/utils/utils.py

@@ -1,14 +1,18 @@
-from database.database import Database
+"""Input sanitization and validation utilities."""
+
 from typing import Optional, List
 from re import match
 
+from database.database import Database
+
+
 def get_all_categories() -> Optional[List[dict]]:
     """
     Returns all possible streaming categories
     """
     with Database() as db:
         all_categories = db.fetchall("SELECT * FROM categories")
-    
+
     return all_categories
 
 def get_all_tags() -> Optional[List[dict]]:
@@ -17,7 +21,7 @@ def get_all_tags() -> Optional[List[dict]]:
     """
     with Database() as db:
         all_tags = db.fetchall("SELECT * FROM tags")
-    
+
     return all_tags
 
 def get_most_popular_category() -> Optional[List[dict]]:
@@ -34,7 +38,7 @@ def get_most_popular_category() -> Optional[List[dict]]:
             ORDER BY SUM(streams.num_viewers) DESC
             LIMIT 1;
         """)
-    
+
     return category
 
 def get_category_id(category_name: str):
@@ -53,7 +57,7 @@ def get_category_id(category_name: str):
 def sanitize(user_input: str, input_type="default") -> str:
     """
     Sanitizes user input based on the specified input type.
-    
+
     `input_type`: The type of input to sanitize (e.g., 'username', 'email', 'password').
     """
     # Strip leading and trailing whitespace
@@ -84,10 +88,10 @@ def sanitize(user_input: str, input_type="default") -> str:
     }
 
     # Get the validation rules for the specified type
-    r = rules.get(input_type)
-    if not r or \
-    not (r["min_length"] <= len(sanitised_input) <= r["max_length"]) or \
-    not match(r["pattern"], sanitised_input):
+    rule = rules.get(input_type)
+    if (not rule
+            or not (rule["min_length"] <= len(sanitised_input) <= rule["max_length"])
+            or not match(rule["pattern"], sanitised_input)):
         raise ValueError("Unaccepted character or length in input")
 
-    return sanitised_input
+    return sanitised_input