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/window/panel/components/indicators.py

@@ -435,7 +435,7 @@ class BatteryIndicator(Box):
 
     def update_state(self):
         if not self._is_present():
-            print("[Battery] No battery detected, hiding indicator")
+            logger.warning("No battery detected, hiding indicator")
             self.hide()
             return
         else: