feat(coding): add conversation archive and first-message titles

src/stores/coding-conversations.ts

@@ -8,6 +8,7 @@ import {
 } from '../../shared/coding-conversation-reducer';
 import { AppError } from '@/lib/error-model';
 import { queueCodingConversationSessionSync } from '@/lib/agent-session-sync';
+import { codingWorkspaceStore } from './coding-workspace';
 import {
   getCodingConversationSnapshot,
   openCodingConversationEvents,
@@ -660,8 +661,20 @@ export function createCodingConversationStore(
               set({ connectionState: 'error', globalError: 'Conversation 事件更新无法读取。' });
             }
           });
+          source.addEventListener('conversation.metadata-changed', (event) => {
+            if (eventSource !== source) return;
+            try {
+              const metadata = parse<{ projectId: string }>(event);
+              if (typeof metadata.projectId === 'string') {
+                void codingWorkspaceStore.getState().refreshConversations(metadata.projectId).catch(() => undefined);
+              }
+            } catch { /* Reconnection refreshes authoritative metadata. */ }
+          });
           source.onopen = () => {
-            if (eventSource === source) set({ connectionState: 'live', globalError: null });
+            if (eventSource !== source) return;
+            set({ connectionState: 'live', globalError: null });
+            const workspace = codingWorkspaceStore.getState();
+            if (workspace.activeProjectId) void workspace.refreshConversations(workspace.activeProjectId).catch(() => undefined);
           };
           source.onerror = () => {
             if (eventSource === source) {