feat(monitor): add alert monitoring page with KPI dashboard, alert list, and incident management

- Add Tauri plugins for file dialog and filesystem access
- Create Rust backend for processing Grafana alerts (pairing, KPI calculation)
- Add virtualized alert list with invalid toggle and incident attachment
- Add incident manager with create, attach, and detach functionality
- Add KPI dashboard showing coverage ratio, downtime, and invalid rate
- Add date-fns for date formatting

apps/web/src-tauri/capabilities/default.json

@@ -3,5 +3,21 @@
   "identifier": "default",
   "description": "enables the default permissions",
   "windows": ["main"],
-  "permissions": ["core:default"]
+  "permissions": [
+    "core:default",
+    "fs:default",
+    "dialog:default",
+    {
+      "identifier": "fs:allow-read-text-file",
+      "allow": [{ "path": "**/*" }]
+    },
+    {
+      "identifier": "fs:allow-exists",
+      "allow": [{ "path": "**/*" }]
+    },
+    {
+      "identifier": "dialog:allow-open",
+      "allow": [{}]
+    }
+  ]
 }