Renders an advisory ETA badge above the Schedule button:
* Green "Fits before deadline" when the projected finish lands
before the chosen deadline hour.
* Amber "Likely to pause" with a "Push the deadline later or split
into smaller runs" hint when it doesn't.
Pill is purely informational — the operator can still schedule a
run that's likely to pause; the pause/resume flow (Phase 3) covers
that case. The pill just removes the surprise.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>