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.

src/shared/styles/about.css

@@ -0,0 +1,78 @@
+#about-menu {
+  background-color: alpha(#000, 0.34);
+
+  box-shadow:
+    inset 0 -0.5px 0 0.5px alpha(#555, 0.7),
+    inset 0 0.5px 0 0.5px alpha(#777, 0.7);
+  border: 1px solid alpha(#111, 0.3);
+  border-top: none;
+  border-radius: 1.25rem;
+  padding: 2rem;
+}
+
+#about-options {
+  background-color: alpha(#333, 0.9);
+  border-radius: 15px;
+  padding: 2rem;
+}
+
+#about-logo-box {
+  margin-top: 2rem;
+  margin-bottom: 2rem;
+}
+
+#about-button-box {
+  padding: 1rem;
+}
+#vendor-label {
+  color: #999999;
+  margin-top: -1rem;
+}
+
+#info-label {
+  color: #888888;
+}
+#about-info-title-box {
+  padding-left: 4rem;
+}
+
+#about-name-label {
+  font-size: 24px;
+  margin: 0px;
+  font-weight: 600;
+}
+
+#about-date-label {
+  font-size: 11px;
+  margin: 0px;
+  color: #ddd;
+  font-weight: 400;
+  margin-bottom: 2rem;
+}
+
+#about-chip-title-label,
+#about-so-title-label,
+#about-mem-title-label {
+  font-size: 12px;
+  margin: 0px;
+  margin-right: 10px;
+  font-weight: 500;
+}
+
+#more-info-button {
+  background-color: #888888;
+  border-radius: 5px;
+  padding: 0px 10px;
+  margin: 1px 2px;
+  transition: all 200ms ease-in-out;
+}
+#more-info-button:hover {
+  background-color: rgb(72, 130, 255);
+}
+
+#more-info-button label {
+  font-size: 12px;
+  margin: 0px;
+  font-weight: 400;
+  color: #fff;
+}