chore(routing): pre-merge cleanup — Plan 7 reminders, code_review→review, operator note

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

cmd/routing/main.go

@@ -1,5 +1,12 @@
 package main
 
+// The internal/skills/{debug,retrospective,review,trainer} packages imported
+// below are also imported by cmd/supervisor. Plan 7 (supervisor retirement)
+// MUST NOT delete these four packages — the routing pod is their second
+// consumer. Plan 7 deletes only internal/skills/{tdd,spec,tier} (the skills
+// that don't route to local), the supervisor binary, and supervisor manifests.
+// See docs/superpowers/specs/2026-05-04-mode-2-routing-pod-design.md (Constraints).
+
 import (
 	"context"
 	"log/slog"