feat(chat): add one-click Plaza publish for HTML page messages.

Speed up the quick-plaza path with session snapshot reads, publish timeouts, and a modal fix so parent re-renders no longer abort in-flight requests.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/api/client.ts

@@ -64,6 +64,7 @@ import type { AgentRunCreateOptions, AgentRunValidation } from '../utils/agentRu
 const API = '/api';
 const DEFAULT_API_TIMEOUT_MS = 20_000;
 const AGENT_CONNECT_TIMEOUT_MS = 60_000;
+const QUICK_PLAZA_TIMEOUT_MS = 120_000;
 const AGENT_RUNS_PATH = '/agent/runs';
 
 export type AgentRun = {
@@ -1086,6 +1087,35 @@ export async function quickShareFromChat(input: {
   return result.data;
 }
 
+export async function quickPlazaFromChat(input: {
+  sessionId: string;
+  messageId: string;
+  selectedLinkIndex?: number;
+}, signal?: AbortSignal): Promise<{
+  pageId: string;
+  publicationId: string;
+  publicUrl: string | null;
+  post: PlazaPostBrief;
+}> {
+  const result = await apiFetch<{
+    data: {
+      pageId: string;
+      publicationId: string;
+      publicUrl: string | null;
+      post: PlazaPostBrief;
+    };
+  }>('/mindspace/v1/pages/quick-plaza-from-chat', {
+    method: 'POST',
+    body: JSON.stringify({
+      session_id: input.sessionId,
+      message_id: input.messageId,
+      selected_link_index: input.selectedLinkIndex ?? 0,
+    }),
+    signal,
+  }, { timeoutMs: QUICK_PLAZA_TIMEOUT_MS });
+  return result.data;
+}
+
 export async function downloadChatMessageDocx(input: {
   sessionId: string;
   messageId: string;