fix(deploy): drop resolved-by — resolution = introducing atomic commit (derive via git)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Ho5EQCFTSvYamuRtVZpp2d

templates/deploy/INCIDENTS.md

@@ -1,10 +1,10 @@
 # Deploy incidents (append-only) — DEP-NNN
 
 <!-- One entry per incident. Next ID = grep '^## DEP-' | max+1. Mirrors blockers.md. -->
+<!-- Resolution = the commit that adds this entry (atomic patch+incident). Recover: git log -S 'DEP-NNN' -- .claude/deploy/INCIDENTS.md -->
 <!-- ## DEP-NNN — <step> failed
      - date: YYYY-MM-DD
      - step: <runbook step + label>
      - error: `<verbatim error>`
      - cause: <root cause>
-     - fix: <what changed in PROCEDURE.md>
-     - resolved-by: <commit sha> -->
+     - fix: <what changed in PROCEDURE.md> -->