Holdout-Promotion Gate

A skill edit ships only if the challenger beats the champion on a sealed holdout by a margin. Tune the challenger, set the margin + min-pass, and run the bake-off — ties reject (incumbent wins), and a single dimension under its blocker rejects even a higher composite. Set sliders, then Run.

Champion

current SKILL.md (HEAD)
7.3
+0.0

Challenger

candidate edit (drag to tune)
7.8
margin (delta to promote)0.5
min_pass (floor)7.0
min_blocker (per dimension)4.0
—
promotion-ledger.jsonl