Add the agents usage bar widget

shell/plugins/agents/manifest.json

@@ -0,0 +1,26 @@
+{
+  "schemaVersion": 1,
+  "id": "blob.agents",
+  "name": "Agents",
+  "version": "1.0.0",
+  "author": "Blob",
+  "description": "Claude Code usage limits and token stats",
+  "kinds": [
+    "bar-widget"
+  ],
+  "entryPoints": {
+    "barWidget": "Panel.qml"
+  },
+  "barWidget": {
+    "displayName": "Agents",
+    "description": "Claude Code session and weekly limits, with token stats from local transcripts",
+    "category": "AI",
+    "allowMultiple": false,
+    "defaults": {
+      "refreshIntervalSec": 900
+    },
+    "schema": [
+      { "key": "refreshIntervalSec", "type": "integer", "label": "Refresh interval (seconds)", "min": 30, "max": 3600, "step": 30, "defaultValue": 900 }
+    ]
+  }
+}