🔖 release(v0.1.4): bump version and UI optimizations

- Remove unused version display logic and update summary
- Add silent audio playback to prevent browser tab throttling
- Update CourseWorkspace and Setting components
- Bump version from 0.1.3 to 0.1.4

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/components/account/CourseWorkspace.tsx

@@ -283,7 +283,13 @@ const CourseWorkspace = (props: CourseWorkspaceProps) => {
                   >
                     <For each={props.recordTypeOptions}>
                       {(item) => (
-                        <option value={item.value}>{item.label}</option>
+                        <option
+                          value={item.value}
+                          disabled={item.value === "/discuss"}
+                          class={item.value === "/discuss" ? "text-zinc-400" : ""}
+                        >
+                          {item.label}
+                        </option>
                       )}
                     </For>
                   </select>