feat(kvb-skill-cleanup): delete installed skills that renames and removals left behind

legacy.py reads the skills repository's git history (renames and deletions of skills/*/SKILL.md), follows rename chains to the current skill, and classifies every installed skill directory as current (shipped or locked), project (tracked in the repository that holds the root), legacy (with its successor), removed, or unknown. kvb-skill-cleanup scans ~/.claude/skills, ~/.agents/skills, ~/.codex/skills and the projects' .claude and .agents skills, asks the operator, and deletes by re-running the installer, by rm -r where the sandbox allows, or through kvb-org-operator; a rescan verifies. tests/test_skill_cleanup.py covers a two-step rename chain, a deletion, a locked, a project and an unknown skill, and invalid input; a broken one-step resolver fails it. Operator order 2026-11-03; four descriptions trimmed for the listing budget.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

README.md

@@ -71,6 +71,7 @@ flowchart LR
   skill --> skill_essence[kvb-skill-essence]
   skill --> skill_transcend[kvb-skill-transcend]
   skill --> skill_compile[kvb-skill-compile]
+  skill --> skill_cleanup[kvb-skill-cleanup]
   none --> cleanup[kvb-cleanup]
   none --> help[kvb-help]
   none --> transcend_all[kvb-transcend]
@@ -149,6 +150,7 @@ flowchart LR
     essence[kvb-skill-essence]
     skill_transcend[kvb-skill-transcend]
     compile[kvb-skill-compile]
+    skill_cleanup[kvb-skill-cleanup]
   end
   subgraph cat_none [no category]
     cleanup[kvb-cleanup]
@@ -242,6 +244,8 @@ flowchart LR
   skill_transcend -. deterministic moves .-> compile
   essence -. procedures .-> compile
   compile --> active_listening
+  skill_cleanup --> operator
+  skill_cleanup -. unknown skills .-> transcend
   tune -. measurements .-> code_transcend
 
   test --> triage