Faster task starts · Preview polish · scheduling fixes

Task speed and runtime readiness
- Faster warm-pool refills help new AI tasks start sooner after deployments and busy periods.
- Fresh warm-pool claims reduce the chance of picking an old runtime, keeping first replies more reliable.
- Independent tasks now reach the first token faster, so users spend less time waiting for the assistant to begin.
Previews and artifacts
- Markdown artifacts now keep recently saved edits visible when you reopen the preview in the same page session, without needing a full refresh.
- Prompt source hover text was removed where it added noise instead of useful context.
Scheduled tasks
- The scheduled tasks grid now adapts more cleanly to available space, making timer lists easier to scan on different screens.
Prompt pages — https://kollab.im/world-cup-2026-prompt
- Fixed the World Cup prompt route so visitors can open the page reliably again.