feat: add review-watcher and fix-workflow automation
- Add review-watcher command that detects completion markers
- Add fix-workflow skill for automatic fix task creation
- Add review-watcher.sh script for monitoring issues
- Automatic task creation based on issue severity
- Integration with scoped labels (priority::, status::)
Workflow:
1. Watcher detects /done, /completed, 'выполнено', 'готово' in comments
2. Runs validation (markdown, code, security, performance)
3. Creates fix tasks for issues found
4. Assigns tasks based on issue type
5. Updates parent issue with fix task links
6. Sets appropriate labels (status::fixing, status::blocked)
Fix task priority:
- Critical: Block merge, assign to @the-fixer
- High: Fix before merge, assign to @lead-developer
- Medium: Current sprint, add to backlog
- Low: Optional, comment only
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