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-runtime-config.mjs

@@ -2,6 +2,7 @@ import path from 'node:path';
 import { DEFAULT_MAX_FILE_BYTES } from './mindspace.mjs';
 import { createMindSpaceServiceFacade } from './mindspace-service.mjs';
 import { createLocalMindSpaceStorageAdapter } from './mindspace-storage-adapter.mjs';
+import { normalizeWorkspaceRelativePath } from './mindspace-workspace-relative-path.mjs';
 import {
   buildPublicUrl,
   PUBLISH_ROOT_DIR,
@@ -10,6 +11,42 @@ import {
   resolvePublishDir,
 } from './user-publish.mjs';
 
+export function resolvePageWorkspaceRelativePath(row) {
+  const fromColumn = normalizeWorkspaceRelativePath(row?.workspace_relative_path);
+  if (fromColumn) return fromColumn;
+  let snapshot = row?.source_snapshot_json;
+  if (typeof snapshot === 'string') {
+    try {
+      snapshot = JSON.parse(snapshot);
+    } catch {
+      snapshot = null;
+    }
+  }
+  return normalizeWorkspaceRelativePath(snapshot?.relative_path);
+}
+
+export function isPublicWorkspaceHtmlRelativePath(relativePath) {
+  const normalized = normalizeWorkspaceRelativePath(relativePath);
+  return Boolean(normalized?.startsWith('public/') && normalized.toLowerCase().endsWith('.html'));
+}
+
+/** MindSpace 工作区静态页 canonical 公网 URL（/MindSpace/<用户ID>/public/...） */
+export function resolveWorkspaceMindSpacePublicUrl({
+  h5Root,
+  env = process.env,
+  userId,
+  relativePath,
+} = {}) {
+  const normalized = normalizeWorkspaceRelativePath(relativePath);
+  if (!userId || !normalized || !isPublicWorkspaceHtmlRelativePath(normalized)) return null;
+  return buildMindSpacePublicUrlForUser({
+    h5Root: h5Root ?? process.cwd(),
+    env,
+    user: userId,
+    relativePath: normalized,
+  });
+}
+
 export function resolveMindSpaceStorageRoot(h5Root, env = process.env) {
   return path.resolve(env.MINDSPACE_STORAGE_ROOT ?? path.join(h5Root, 'data', 'mindspace'));
 }