feat(root): implement dynamic todo list refresh and UI enhancements

This change adds a mechanism to refresh the todo list dynamically when the underlying service updates, improving UI responsiveness and user experience. It also updates documentation and removes deprecated files.

- New Features:
  - Added `_refresh_todos` method to rebuild the todo list when `get_todo_service().todos` changes.
  - Introduced `TodoListCapture` class for mouse capture handling of the todo list window.
- Enhancements:
  - Updated README with corrected image paths, installation tips, and manual installation commands.
  - Introduced `start.py` to launch the application or lock mode.
  - Removed deprecated `config.json` and `debug_memory.py`.
- Bug Fixes:
  - Fixed lock screen screenshot path in README.

start.py

@@ -0,0 +1,24 @@
+import os
+import sys
+
+# Ensure the 'src' directory is in the python path
+# This allows 'import main' and other src-relative imports to work from the root
+src_path = os.path.join(os.path.dirname(__file__), "src")
+if src_path not in sys.path:
+    sys.path.insert(0, src_path)
+
+def run_app():
+    from main import main as app_main
+    app_main()
+
+
+def run_lock():
+    from lock import main as lock_main
+    lock_main()
+
+
+if __name__ == "__main__":
+    if len(sys.argv) > 1 and sys.argv[1] == "lock":
+        run_lock()
+    else:
+        run_app()