feat: add user commands, auto-detect browser, optimize performance

- Add user/user-posts/followers/following commands
- Add UserProfile model and GraphQL API methods
- Add print_user_profile and print_user_table formatters
- Auto-detect browser for cookies (Chrome → Edge → Firefox → Brave)
- Remove --browser option from all commands
- Remove cookie verification (v1.1 endpoints are gone)
- Use hardcoded fallback query IDs first (skip slow JS bundle scan)
- Update FEATURES from latest twitter-openapi config
- Fix user-posts: add required withVoice variable
- Add tweet URL links in feed output
- Add error handling to all user commands

config.yaml

@@ -13,10 +13,3 @@ filter:
     replies: 2.0
     bookmarks: 5.0
     views_log: 0.5
-
-ai:
-  provider: "openai"
-  api_key: ""
-  model: "doubao-seed-2.0-code"
-  base_url: "https://ark.cn-beijing.volces.com/api/coding"
-  language: "zh-CN"