fix: TikTok API endpoints and privacy level handling

- Fix publish endpoint: /post/video/init/ → /post/publish/video/init/
- Replace broken /video/list/ with /post/publish/creator_info/query/
- Auto-select valid privacy level from creator options (sandbox fix)
- Update tools, manifest, REST routes for creator_info

src/tools.ts

@@ -9,7 +9,7 @@ import { getMe as getTelegramMe, sendMessage as sendTelegramMessage, sendPhoto a
 import { getMe as getDiscordMe, getGuilds, getChannels, sendMessage as sendDiscordMessage, getMessages as getDiscordMessages } from './clients/discord.js';
 import { getProfile as getInstagramProfile, getMedia as getInstagramMedia, createImagePost as createInstagramPost, createReel as createInstagramReel } from './clients/instagram.js';
 import { searchTweets, getUserProfile, getUserTweets, createTweet, uploadVideoAndTweet } from './clients/twitter.js';
-import { getUserProfile as getTikTokProfile, getUserVideos, createVideo, getVideoStatus } from './clients/tiktok.js';
+import { getUserProfile as getTikTokProfile, getCreatorInfo, createVideo, getVideoStatus } from './clients/tiktok.js';
 import { getMe as getSnapchatMe, createSnap, getAdAccounts } from './clients/snapchat.js';
 import { getPage, getPosts, createPost as createFacebookPost, createPhotoPost, createVideoPost as createFacebookVideoPost } from './clients/facebook.js';
 
@@ -577,13 +577,12 @@ export const tools: Tool[] = [
     },
   },
   {
-    name: 'tiktok_get_videos',
+    name: 'tiktok_get_creator_info',
     description:
-      'List recent videos from the authenticated TikTok account with view, like, comment, and share counts.',
+      'Get TikTok creator publishing info: username, avatar, available privacy levels, and max video duration. Required before publishing.',
     inputSchema: {
       type: 'object',
       properties: {
-        max_count: { type: 'number', description: 'Max videos to return (default: 10, max: 20)' },
         account: { type: 'string', description: 'Which TikTok account to use (default: "default")' },
       },
     },
@@ -1018,9 +1017,8 @@ export async function handleToolCall(
         }, customer);
         break;
 
-      case 'tiktok_get_videos':
-        result = await getUserVideos({
-          max_count: (args.max_count as number) ?? 10,
+      case 'tiktok_get_creator_info':
+        result = await getCreatorInfo({
           account: args.account as string | undefined,
         }, customer);
         break;