feat(app): status rings on panels + sidebar aggregate badge from state events

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/src-tauri/src/bridge.rs

@@ -255,3 +255,8 @@ pub async fn set_group(state: BridgeState<'_>, group_id: String, name: Option<St
 pub async fn delete_group(state: BridgeState<'_>, group_id: String) -> Result<Value, String> {
     data_of(state.request(Cmd::DeleteGroup { group_id: GroupId(group_id) }).await.map_err(|e| e.to_string())?)
 }
+
+#[tauri::command]
+pub async fn focus(state: BridgeState<'_>, surface_id: String) -> Result<Value, String> {
+    data_of(state.request(Cmd::Focus { surface_id: SurfaceId(surface_id) }).await.map_err(|e| e.to_string())?)
+}

app/src-tauri/src/lib.rs

@@ -35,6 +35,7 @@ pub fn run() {
             bridge::create_group,
             bridge::set_group,
             bridge::delete_group,
+            bridge::focus,
         ])
         .run(tauri::generate_context!())
         .expect("error while running spacesh");