Hill Climb

The toolkit's metric-driven optimization loop. One number moves; everything else stays fixed. Each iteration states one hypothesis, makes one change, runs the correctness floor, re-measures, and either accepts the change or reverts it. The ledger of what was tried and what failed ships with the code.

Sibling to objective-loop: that loop verifies boolean criteria and reschedules; this loop optimizes a continuous metric against variance. Route here whenever the goal is a number moving in a direction.

Phase 1: SPEC

Fill these fields from the request. Interview only for what is missing.