Add TUI notifications and attention sounds (disabled by default) (#26980)

packages/opencode/src/cli/cmd/tui/plugin/internal.ts

@@ -7,6 +7,7 @@ import SidebarTodo from "../feature-plugins/sidebar/todo"
 import SidebarFiles from "../feature-plugins/sidebar/files"
 import SidebarFooter from "../feature-plugins/sidebar/footer"
 import PluginManager from "../feature-plugins/system/plugins"
+import Notifications from "../feature-plugins/system/notifications"
 import SessionV2Debug from "../feature-plugins/system/session-v2"
 import WhichKey from "../feature-plugins/system/which-key"
 import type { TuiPlugin, TuiPluginModule } from "@opencode-ai/plugin/tui"
@@ -27,6 +28,7 @@ export const INTERNAL_TUI_PLUGINS: InternalTuiPlugin[] = [
   SidebarTodo,
   SidebarFiles,
   SidebarFooter,
+  Notifications,
   PluginManager,
   WhichKey,
   ...(Flag.OPENCODE_EXPERIMENTAL_EVENT_SYSTEM ? [SessionV2Debug] : []),