feat(timer): wire VisualTimer to tasks with notifications and persistence

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

package-lock.json

@@ -12,6 +12,7 @@
         "@tauri-apps/api": "^2",
         "@tauri-apps/plugin-dialog": "^2.6.0",
         "@tauri-apps/plugin-global-shortcut": "^2.3.1",
+        "@tauri-apps/plugin-notification": "^2.3.3",
         "@tauri-apps/plugin-opener": "^2",
         "lucide-svelte": "^0.577.0"
       },
@@ -1563,6 +1564,15 @@
         "@tauri-apps/api": "^2.8.0"
       }
     },
+    "node_modules/@tauri-apps/plugin-notification": {
+      "version": "2.3.3",
+      "resolved": "https://registry.npmjs.org/@tauri-apps/plugin-notification/-/plugin-notification-2.3.3.tgz",
+      "integrity": "sha512-Zw+ZH18RJb41G4NrfHgIuofJiymusqN+q8fGUIIV7vyCH+5sSn5coqRv/MWB9qETsUs97vmU045q7OyseCV3Qg==",
+      "license": "MIT OR Apache-2.0",
+      "dependencies": {
+        "@tauri-apps/api": "^2.8.0"
+      }
+    },
     "node_modules/@tauri-apps/plugin-opener": {
       "version": "2.5.3",
       "resolved": "https://registry.npmjs.org/@tauri-apps/plugin-opener/-/plugin-opener-2.5.3.tgz",