fix(pi): keep active runs alive during background sleep

electron/api/coding-composition.ts

@@ -47,6 +47,7 @@ export interface CreateCodingCompositionOptions {
   browser: AgentBrowserModule;
   paths: CodingCompositionPaths;
   getLocalProxyCredential?(): string | undefined;
+  acquireBackgroundLease?(lease: { id: string; kind: 'coding-run' }): () => void;
 }
 
 export function resolveCodingPiRuntimePaths(input: {
@@ -158,6 +159,9 @@ export function createCodingComposition(
         mimeType: record.mime,
       };
     })),
+    ...(options.acquireBackgroundLease
+      ? { acquireBackgroundLease: options.acquireBackgroundLease }
+      : {}),
   });
   const projects = new CodingProjectService(projectStore, {
     migration: {
@@ -174,13 +178,13 @@ export function createCodingComposition(
         .catch(() => []);
       for (const conversation of conversations) registry.forget(conversation.id);
     },
-    onProjectDeactivated: async (project) => {
+    onProjectDeactivated: async (project, reason) => {
       const conversations = await conversationStoreForProject(project.path).read()
         .then((file) => file.conversations)
         .catch(() => []);
       await Promise.allSettled([
         options.browser.close(project.path),
-        ...conversations.map(({ id }) => runtime.dispose(id)),
+        ...conversations.map(({ id }) => runtime.dispose(id, reason)),
       ]);
     },
   });
@@ -205,9 +209,12 @@ export function createCodingComposition(
     conversations,
     runtime,
     host,
-    async sleep() {
+    async sleep(reason) {
+      if (reason === 'background_sleep' && runtime.hasActiveWork()) return;
       const conversationIds = runtime.getDiagnostics().workers.map((worker) => worker.conversationId);
-      await Promise.allSettled(conversationIds.map((conversationId) => runtime.dispose(conversationId)));
+      await Promise.allSettled(conversationIds.map((conversationId) => (
+        runtime.dispose(conversationId, reason)
+      )));
     },
     async shutdown() {
       await subagents.close();