feat: chat uploads, vision turn isolation, and MindSpace agent improvements

Add chat file/image upload UX, attachment proxying, vision thumbnails, and per-turn image scoping so agents only use the current upload. Extend MindSpace asset context, billing token state, OA/scenario verify scripts, and related runtime config.

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

mindspace-pages.mjs

@@ -13,6 +13,10 @@ import {
   bufferToImageDataUri,
 } from './mindspace-thumbnails.mjs';
 import { resolvePublishDir } from './user-publish.mjs';
+import {
+  resolvePageWorkspaceRelativePath,
+  resolveWorkspaceMindSpacePublicUrl,
+} from './mindspace-runtime-config.mjs';
 import { prepareHtmlDownloadLinks, inferWorkspaceHtmlRelativePath } from './mindspace-html-download-links.mjs';
 import { prepareHtmlPageBrandMarkers } from './mindspace-page-tag.mjs';
 import { purgeWorkspacePageArtifacts, extractAssetIdsFromHtml } from './mindspace-page-purge.mjs';
@@ -106,7 +110,14 @@ function extensionForMime(mimeType, filename = '') {
   return 'bin';
 }
 
-function pageResponse(row, { includeContent = true } = {}) {
+function pageResponse(row, { includeContent = true, h5Root = null, env = process.env } = {}) {
+  const workspaceRelativePath = resolvePageWorkspaceRelativePath(row);
+  const workspacePublicUrl = resolveWorkspaceMindSpacePublicUrl({
+    h5Root,
+    env,
+    userId: row.user_id,
+    relativePath: workspaceRelativePath,
+  });
   const response = {
     id: row.id,
     categoryId: row.category_id,
@@ -123,7 +134,9 @@ function pageResponse(row, { includeContent = true } = {}) {
     status: row.status,
     visibility: row.visibility,
     publicationAccessMode: row.pub_access_mode ?? null,
-    publicationUrl: row.pub_public_url ?? null,
+    publicationUrl: workspacePublicUrl ?? row.pub_public_url ?? null,
+    workspaceRelativePath: workspaceRelativePath ?? null,
+    workspacePublicUrl,
     currentVersionId: row.current_version_id,
     versionNo: asNumber(row.version_no),
     createdAt: asNumber(row.created_at),
@@ -249,6 +262,7 @@ export function createPageService(pool, options = {}) {
   const h5Root = options.h5Root ? path.resolve(options.h5Root) : null;
   const idFactory = options.idFactory ?? (() => crypto.randomUUID());
   const conversationPackageRegistry = options.conversationPackageRegistry ?? null;
+  const toPageResponse = (row, opts = {}) => pageResponse(row, { h5Root, ...opts });
 
   const resolveWorkspacePublishDir = async (userId) => {
     if (!h5Root) return null;
@@ -624,7 +638,7 @@ export function createPageService(pool, options = {}) {
        LIMIT 1`,
       [userId, assetId],
     );
-    return rows[0] ? pageResponse(rows[0]) : null;
+    return rows[0] ? toPageResponse(rows[0]) : null;
   };
 
   const findPageBySourceMessage = async (userId, sessionId, messageId) => {
@@ -640,7 +654,7 @@ export function createPageService(pool, options = {}) {
        LIMIT 1`,
       [userId, sessionId, messageId],
     );
-    return rows[0] ? pageResponse(rows[0]) : null;
+    return rows[0] ? toPageResponse(rows[0]) : null;
   };
 
   const findPageByRelativePath = async (userId, relativePath) => {
@@ -669,7 +683,7 @@ export function createPageService(pool, options = {}) {
        LIMIT 1`,
       [userId, normalized, normalized, normalized],
     );
-    return rows[0] ? pageResponse(rows[0]) : null;
+    return rows[0] ? toPageResponse(rows[0]) : null;
   };
 
   const findPlazaContextByWorkspacePath = async (userId, relativePath) => {
@@ -734,7 +748,7 @@ export function createPageService(pool, options = {}) {
     ]);
     const total = asNumber(countRows[0]?.total);
     return {
-      items: rows.map((row) => pageResponse(row, { includeContent: false })),
+      items: rows.map((row) => toPageResponse(row, { includeContent: false })),
       total,
       limit,
       offset,
@@ -761,7 +775,7 @@ export function createPageService(pool, options = {}) {
       sourceSnapshotJson: row.source_snapshot_json,
       pageType: row.page_type,
     });
-    return pageResponse({ ...row, content });
+    return toPageResponse({ ...row, content });
   }
 
   const listVersions = async (userId, pageId) => {