style: enforce consistent codestyle via ruff config and auto-fixes

- Configure ruff: isort, pyupgrade, bugbear, flake8 rules
- Auto-fix import sorting, redundant parens, exception chaining
- Remove from __future__ import annotations (Python 3.13+)
- Convert debug print() to logger calls
- Fix typo applicaiton → application in icon_resolver
- Remove bare returns in animator setters
- Move TYPE_CHECKING imports to runtime where used at runtime

src/utils/app_name_resolver.py

@@ -16,7 +16,7 @@ class AppName:
             return None
 
         desktop_app_name = wmclass
-        with open(os.path.join(self.path, desktop_file), "r") as f:
+        with open(os.path.join(self.path, desktop_file)) as f:
             lines = f.readlines()
             for line in lines:
                 if line.startswith("Name="):