aisman

Session 105, Step 9: Output validation, issue filtering, AI-cost tab behavior, and keyboard fixes
- AIM-1902 Project AI cost tab — frontend UI
- AIM-2173 Issues list/search: treat Transitioned differently from Removed
- AIM-2176 Fix browser 'Duplicate tab' causing Aisman to freeze (service worker deadlock)
- AIM-2180 Fix incorrect unresolved/resolved issue status boundary throughout codebase
- AIM-2183 JS output validation: deduplicate repeated issue properties and normalize processing duration
- AIM-2184 Textarea Up/Down arrows must move cursor instead of scrolling page