refactor: enhance TimerPage layout and functionality; update theme and tokens for improved design consistency

- Refactored TimerPage component to improve layout and user experience.
- Updated theme configuration to utilize design tokens for better maintainability.
- Introduced new tokens for colors and typography to align with design principles.
- Simplified state management and improved timer functionality.
- Enhanced accessibility and responsiveness of UI elements.

desktop/kadence_desktop/worker.py

@@ -129,7 +129,7 @@ class ApiWorker(QObject):
             "extend": lambda: self._api.extend(int(args.get("minutes", 5))),
             "interrupt": self._api.interrupt,
             "attach_task": lambda: self._api.attach_task(args.get("task_id")),
-            "task_done": lambda: self._api.task_done(int(args["task_id"]), bool(args.get("done", True))),
+            "patch_task": lambda: self._api.patch_task(int(args["task_id"]), dict(args.get("patch", {}))),
             "create_task": lambda: self._api.create_task(str(args["title"]), args.get("due_date")),
             "refresh_sources": self._api.refresh_tasks,
             "send_report": self._api.send_report,
@@ -156,7 +156,7 @@ class ApiWorker(QObject):
             return
 
         self.commandDone.emit(name, result if isinstance(result, dict) else {})
-        if name in ("refresh_sources", "task_done", "create_task"):
+        if name in ("refresh_sources", "patch_task", "create_task"):
             self.refresh_tasks()
         if name == "patch_settings":
             self.refresh_settings()