Migrate UI to v2 SDK client

Use v2 OpencodeClient with normalized request handling and rehydrate pending permissions via GET /permission on instance hydration.

packages/ui/src/components/instance-service-status.tsx

@@ -90,9 +90,9 @@ const InstanceServiceStatus: Component<InstanceServiceStatusProps> = (props) =>
     setPendingMcpAction(serverName, action)
     try {
       if (shouldEnable) {
-        await client.mcp.connect({ path: { name: serverName } })
+        await client.mcp.connect({ name: serverName })
       } else {
-        await client.mcp.disconnect({ path: { name: serverName } })
+        await client.mcp.disconnect({ name: serverName })
       }
       await refreshMetadata()
     } catch (error) {