aisman

Session 73, Step 1: Implement 21 issues: multi-user features, UI fixes, add-issue mode, animations
- AIM-14 Markdown scroll sync between editor and preview
- AIM-281 Selected issue triangle pointer to detail panel
- AIM-337 Fix selected issue triangle pointer: from detail side, sync scroll
- AIM-345 Adding relations and children
- AIM-537 Fix line numbering to show actual lines with visual wrapping
- AIM-551 Add prev/next issue navigation buttons to detail panel
- AIM-565 Backend: endpoint for other users' active issues grouped by user
- AIM-566 Backend: include other users' sessions in project sessions endpoint
- AIM-568 Frontend: render other users' issues grouped by user with avatar
- AIM-569 Frontend: sessions list other-users toggle with creator avatar
- AIM-570 Frontend: workflow tab ownership check dialog
- AIM-575 Frontend: session issues tab shows SessionIssue records with touch count display
- AIM-576 Frontend: session issues dirty marking on output file processing
- AIM-583 Session issues list live updates during add-issue mode
- AIM-593 Keep last clicked output file row highlighted
- AIM-621 Add line numbers to output preview mode
- AIM-670 Animate gear icon in Running... label in Actions column
- AIM-694 Replace step count in session info line with creator avatar, dates, duration, rows
- AIM-700 Fix add-issue mode: newly added issues not formatted correctly
- AIM-701 Persist add-issue mode in AimState across issue navigation
- AIM-702 Pre-select last manual tab when session loads from server