feat(agent): add frontend action bridge

.opencode/tools/view_scada.ts

@@ -1,4 +1,5 @@
 import { tool } from "@opencode-ai/plugin";
+import { executeFrontendAction } from "./frontend_action.js";
 
 export default tool({
   description: "打开前端的 SCADA 监测数据历史面板。",
@@ -23,8 +24,7 @@ export default tool({
       .optional()
       .describe("Optional ISO8601 end time."),
   },
-  async execute() {
-    // SCADA 面板仍在浏览器侧执行，工具结果不承载实际监测数据。
-    return "已打开 SCADA 监测面板。";
+  async execute(args, context) {
+    return executeFrontendAction("view_scada", args, context);
   },
 });