Mission Run Overview
Mission Run: Coord Commit-Surface Authority
Make create-time, spec-commit, and the task commands agree on the authoritative commit surface for coord-topology missions.
Coord-topology missions currently have three layers that disagree about which branch or worktree owns a mission's commits: mission create can mint redundant coord topology, spec-commit can fall back or cross-contaminate coord branches, and the task commands diverge between silently skipping and hard-refusing under a protected primary. This mission establishes one authoritative-surface rule and reconciles all three layers to it, closing a class of split-brain and data-integrity defects (#2533, #2300, #2739-B16) under parent epic #2160.