feat(weibo): add statuses command to fetch user timeline

[ZepPellN]

Summary

Adds opencli weibo statuses <id> command to fetch a specific user's Weibo timeline.

Currently opencli supports:

• weibo user <id> — user profile
• weibo post <id> — single post detail
• weibo feed — personal for-you / following timeline

But there is no way to list a specific user's statuses. This PR fills that gap.

What Changed

• New adapter: clis/weibo/statuses.js
• Uses /ajax/statuses/mymblog?uid=<uid>&page=<page>&feature=0 API (discovered via browser network capture)
• Resolves screen_name → uid automatically if a non-numeric ID is provided
• Returns rich metadata: id, mblogid, text, isLongText, created_at, reposts, comments, likes, pic_num, url, plus retweeted and page_info when available

Usage

# By UID
opencli weibo statuses 1233486457 --limit 5

# By screen name
opencli weibo statuses "高飞" --limit 10 --page 2

# JSON output
opencli weibo statuses 1233486457 --limit 5 -f json

Test Plan

• opencli validate passes
• E2E tested against real Weibo user pages (authenticated cookie session)
• Both numeric UID and screen_name resolution work
• Long text flag, retweeted content, and page_info are correctly extracted
• Pagination (--page) works

Notes

• Requires cookie authentication (same as other weibo commands)
• text is capped at 500 chars in list view; use weibo post <mblogid> for full long-text expansion