Added all missing MULTIX enhancements matching the original screenshot:
1. STREAMING indicator:
- Animated purple badge with sparkles icon
- Shows live token count during streaming
- Pulsing animation effect
2. Status badges:
- PENDING/RUNNING/DONE badges for tasks
- Color-coded based on status
3. APEX/SHIELD renamed:
- 'Auto' -> 'APEX' with tooltip
- 'Shield' -> 'SHIELD' with tooltip
4. THINKING indicator:
- Bouncing dots animation (3 dots)
- Shows THINKING or SENDING status
5. STOP button:
- Red stop button appears during agent work
- Calls cancel endpoint to interrupt
6. Detailed token stats bar:
- INPUT/OUTPUT tokens
- REASONING tokens (amber)
- CACHE READ (emerald)
- CACHE WRITE (cyan)
- COST (violet)
- MODEL (indigo)
7. Message navigation sidebar:
- YOU/ASST labels for each message
- Click to scroll to message
- Appears on right side when viewing task
