feat(drainage): execute frontend actions

features/agent/api/swr.ts

@@ -4,24 +4,28 @@ import type {
   AgentModelOption
 } from "./client";
 import { parseUiRegistry, type UIRegistry } from "../ui-envelope";
+import { parseFrontendActionRegistry, type FrontendActionRegistry } from "../frontend-action";
 
 export const agentBootstrapKey = ["agent", "bootstrap"] as const;
 export const agentSessionsKey = ["agent", "sessions"] as const;
 
 export type AgentBootstrapData = {
   registry: UIRegistry | null;
+  frontendActionRegistry?: FrontendActionRegistry | null;
   models: AgentModelOption[];
   defaultModel: string;
 };
 
 export async function fetchAgentBootstrap(client: AgentApiClient): Promise<AgentBootstrapData> {
-  const [rawRegistry, modelsResponse] = await Promise.all([
+  const [rawRegistry, rawFrontendActionRegistry, modelsResponse] = await Promise.all([
     client.getUiRegistry(),
+    typeof client.getFrontendActionRegistry === "function" ? client.getFrontendActionRegistry() : Promise.resolve(undefined),
     client.getModels()
   ]);
 
   return {
     registry: parseUiRegistry(rawRegistry),
+    ...(rawFrontendActionRegistry === undefined ? {} : { frontendActionRegistry: parseFrontendActionRegistry(rawFrontendActionRegistry) }),
     models: modelsResponse.models,
     defaultModel: modelsResponse.defaultModel
   };