add 6 skills to repo + update skill-review for xiaoming

- Add code-interpreter, kokoro-tts, remotion-best-practices,
  research-to-paper-slides, summarize, tavily-tool to source repo
- skill-review: add main/xiaoming agent mapping in handler.ts + SKILL.md
- tts-voice: handler.ts updates from agent workspace

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

skills/skill-review/handler.ts

@@ -9,6 +9,7 @@ const REPO_NAME = 'openclaw-skill';
 
 // Agent ID → Gitea 帳號 & token 環境變數對應
 const AGENT_MAP: Record<string, { username: string; tokenEnv: string }> = {
+  main: { username: 'xiaoming', tokenEnv: 'GITEA_TOKEN_XIAOMING' },
   tiangong: { username: 'tiangong', tokenEnv: 'GITEA_TOKEN_TIANGONG' },
   kaiwu: { username: 'kaiwu', tokenEnv: 'GITEA_TOKEN_KAIWU' },
   yucheng: { username: 'yucheng', tokenEnv: 'GITEA_TOKEN_YUCHENG' },