feat: introduce notification system and claude notifications (#450)

* feat: introduce notification system and claude notifications

* fix(sw): prevent caching of API requests and WebSocket upgrades

* default to false for webpush notifications and translations for the button

* fix: notifications orchestrator and add a notification when  first enabled

* fix: remove unused state update and dependency in settings controller hook

* fix: show notifications settings tab

* fix: add notifications for response completion for all providers

* feat: show session name in notification and don't reload tab on clicking
--- the notification

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: Haileyesus <something@gmail.com>

src/i18n/locales/en/common.json

@@ -206,6 +206,36 @@
       "failedToCreateFolder": "Failed to create folder"
     }
   },
+  "notifications": {
+    "genericTool": "a tool",
+    "codes": {
+      "generic": {
+        "info": {
+          "title": "Notification"
+        }
+      },
+      "permission": {
+        "required": {
+          "title": "Action Required",
+          "body": "{{toolName}} is waiting for your decision."
+        }
+      },
+      "run": {
+        "stopped": {
+          "title": "Run Stopped",
+          "body": "Reason: {{reason}}"
+        },
+        "failed": {
+          "title": "Run Failed"
+        }
+      },
+      "agent": {
+        "notification": {
+          "title": "Agent Notification"
+        }
+      }
+    }
+  },
   "versionUpdate": {
     "title": "Update Available",
     "newVersionReady": "A new version is ready",

src/i18n/locales/en/settings.json

@@ -105,7 +105,28 @@
     "git": "Git",
     "apiTokens": "API & Tokens",
     "tasks": "Tasks",
+    "notifications": "Notifications",
     "plugins": "Plugins"
+
+  },
+  "notifications": {
+    "title": "Notifications",
+    "description": "Control which notification events you receive.",
+    "webPush": {
+      "title": "Web Push Notifications",
+      "enable": "Enable Push Notifications",
+      "disable": "Disable Push Notifications",
+      "enabled": "Push notifications are enabled",
+      "loading": "Updating...",
+      "unsupported": "Push notifications are not supported in this browser.",
+      "denied": "Push notifications are blocked. Please allow them in your browser settings."
+    },
+    "events": {
+      "title": "Event Types",
+      "actionRequired": "Action required",
+      "stop": "Run stopped",
+      "error": "Run failed"
+    }
   },
   "appearanceSettings": {
     "darkMode": {