feat(coding): add preview data runtime session

electron/api/coding-composition.ts

@@ -32,6 +32,7 @@ import {
 } from './coding-provider-auth';
 import { createCodingProductHost, type CodingProductComposition } from './coding-product-services';
 import { createDataServiceOperations } from '../services/data-service-client';
+import { createPreviewDataSessionManager, type PreviewDataSessionManager } from '../services/preview-data-session';
 import { archivePiConversationSession } from '../coding-runtime/pi/resource-loader';
 import { resolveLegacyProjectModel } from '../coding-projects/legacy-v1';
 
@@ -164,6 +165,7 @@ export function createCodingComposition(
       ? { acquireBackgroundLease: options.acquireBackgroundLease }
       : {}),
   });
+  let previewDataSession: PreviewDataSessionManager | undefined;
   const projects = new CodingProjectService(projectStore, {
     migration: {
       resolveLegacyModel: async ({ legacyModel }) => resolveLegacyProjectModel(
@@ -180,9 +182,11 @@ export function createCodingComposition(
       for (const conversation of conversations) registry.forget(conversation.id);
     },
     onProjectIdentityChanging: async (project) => {
+      previewDataSession?.invalidate('project_identity_changed');
       await options.browser.close(project.path);
     },
     onProjectDeactivated: async (project, reason) => {
+      previewDataSession?.invalidate('project_deactivated');
       const conversations = await conversationStoreForProject(project.path).read()
         .then((file) => file.conversations)
         .catch(() => []);
@@ -208,9 +212,16 @@ export function createCodingComposition(
   });
   const dataService = createDataServiceOperations({ projects });
   productTools.configureDataService(dataService);
+  previewDataSession = createPreviewDataSessionManager({ projects });
+  const unsubscribeBrowserLifecycle = typeof options.browser.subscribeLifecycle === 'function'
+    ? options.browser.subscribeLifecycle((event) => {
+      previewDataSession?.handleAgentBrowserLifecycle(event);
+    })
+    : () => undefined;
   return {
     attachments,
     dataService,
+    previewDataSession,
     productTools,
     projects,
     conversations,
@@ -224,6 +235,8 @@ export function createCodingComposition(
       )));
     },
     async shutdown() {
+      previewDataSession?.dispose();
+      unsubscribeBrowserLifecycle();
       await subagents.close();
       await runtime.shutdown();
     },