fix(agent-browser): restore bounded presentation lifecycle

electron/api/coding-composition.ts

@@ -1,6 +1,7 @@
 import { accessSync, constants } from 'node:fs';
 import path from 'node:path';
 import type { AgentBrowserModule } from '../agent-browser';
+import type { AgentBrowserSnapshot } from '../../shared/agent-browser';
 import { CodingAttachmentStore } from '../coding-projects/attachment-store';
 import { createCodingConversationStore } from '../coding-projects/conversation-store';
 import { CodingProjectService } from '../coding-projects/project-service';
@@ -102,6 +103,8 @@ export interface CreateCodingCompositionOptions {
   accountCache?: AccountPluginCache;
   clientVersion?: string;
   policyClient?: PluginPolicyClient;
+  requestAgentBrowserPresentation?(snapshot: AgentBrowserSnapshot): void;
+  publishAgentBrowserState?(snapshot: AgentBrowserSnapshot): void;
 }
 
 type PiWorkerExecutableProbe = (candidate: string) => boolean;
@@ -241,6 +244,8 @@ export function createCodingComposition(
     bundledSkillsDir: options.paths.bundledSkillsDir,
     modelToolRegistry,
     devicePackageTools,
+    requestAgentBrowserPresentation: options.requestAgentBrowserPresentation,
+    publishAgentBrowserState: options.publishAgentBrowserState,
     pluginSkillSources,
     getPluginSkillSources: async () => effectiveResolver
       ? (await effectiveResolver.getSkillSources()).map((source) => ({
@@ -543,6 +548,9 @@ export function createCodingComposition(
         runtime.dispose(conversationId, reason)
       )));
       if (reason === 'background_sleep' && runtime.hasActiveWork()) return;
+      if (reason === 'background_sleep') {
+        await options.browser.close().catch(() => undefined);
+      }
       await agentServer.stop();
     },
     async shutdown() {