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/dock/animator.py

@@ -1,15 +1,11 @@
-from __future__ import annotations
-
-from typing import TYPE_CHECKING, Optional
+from typing import Optional
 
 from fabric.utils import GLib
 
+from .canvas import DockCanvas
 from .constants import ANIM_INTERVAL_MS, IDLE_THRESHOLD, LERP_FACTOR
 from .layout import DockLayout
 
-if TYPE_CHECKING:
-    from .canvas import DockCanvas
-
 
 class DockAnimator:
     def __init__(self, canvas: DockCanvas):

src/window/dock/canvas.py

@@ -1,5 +1,3 @@
-from __future__ import annotations
-
 import math
 from dataclasses import dataclass
 from typing import Dict, List, Optional, Tuple
@@ -810,9 +808,9 @@ class DockCanvas(Gtk.DrawingArea):
 
         if item.is_pinned and not item.is_running:
             self._handle_pinned_click(event, item)
-        elif item.is_running and not item.is_pinned:
-            self._handle_instance_click(event, item)
-        elif item.is_pinned and item.is_running:
+        elif (item.is_running and not item.is_pinned) or (
+            item.is_pinned and item.is_running
+        ):
             self._handle_instance_click(event, item)
 
         return True
@@ -894,7 +892,7 @@ class DockCanvas(Gtk.DrawingArea):
     def _read_pinned_apps(self) -> list:
         try:
             if os.path.exists(PINNED_APPS_FILE):
-                with open(PINNED_APPS_FILE, "r") as f:
+                with open(PINNED_APPS_FILE) as f:
                     data = tomlkit.load(f)
                     return list(data.get("pinned", []))
         except Exception as e:

src/window/dock/constants.py

@@ -1,5 +1,3 @@
-from __future__ import annotations
-
 from utils.utils import toml_file
 
 PINNED_APPS_FILE = toml_file("dock.toml")

src/window/dock/layout.py

@@ -1,8 +1,7 @@
-from __future__ import annotations
-
 import math
-from typing import TYPE_CHECKING, List, Tuple
+from typing import List, Tuple
 
+from .canvas import DockItem
 from .constants import (
     BG_PADDING_H,
     BG_PADDING_V,
@@ -13,9 +12,6 @@ from .constants import (
     SIGMA_FACTOR,
 )
 
-if TYPE_CHECKING:
-    from .canvas import DockItem
-
 
 class DockLayout:
     @staticmethod

src/window/dock/main.py

@@ -1,5 +1,3 @@
-from __future__ import annotations
-
 from fabric.utils import GLib, logger, random
 from fabric.widgets.box import Box
 from fabric.widgets.eventbox import EventBox