Spec Kitty

Mission Run: Doctor mission-state legacy repair & report fidelity

Make 'spec-kitty doctor mission-state' repair legacy missions instead of aborting, and show operators what it changed or would change.

Operators run 'spec-kitty doctor mission-state' to heal mission bookkeeping before acting. Today it hard-fails on older missions carrying a legacy field value and reports only bare error counts, hiding which missions failed and why in a file git never tracks. This mission makes the repair tolerate and normalize legacy values, and makes the command honestly show per-mission outcomes so operators can trust and act on the result.