feat(git): kvb-git-orphans-find for merged and abandoned branches

orphans.py classifies every local branch and detached worktree as merged-clean, merged-dirty, stale-open or active (ancestor or patch-equivalent of origin/<default>, dirty and unpushed counts, last activity, live council claims, busy processes) and proposes kvb-git-branch-gc, ask or keep; it reads only. The skill asks one question before any per-row round. kvb-dream step 8 runs it per repository in scope, kvb-cleanup at watch stage warn or with large worktrees.

🎯 Fix: 92 %
💥 Break: 3 %
💸 Cost: 148 %
⏱️ Time: –
🛡️ Security: 100 %
💰 Value: ?
🏆 Score: 60
🚦 Gate: ⚠️ cost 148 % > 100: ask the operator before the commit

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

README.md

@@ -56,6 +56,7 @@ flowchart LR
   git --> git_pr_label[kvb-git-pr-label]
   git --> git_update_branches[kvb-git-update-branches]
   git --> git_branch_gc[kvb-git-branch-gc]
+  git --> git_orphans_find[kvb-git-orphans-find]
   git --> git_changelog[kvb-git-changelog]
   git --> git_hotfix[kvb-git-hotfix]
   check --> check_legal[kvb-check-legal]
@@ -156,6 +157,7 @@ flowchart LR
     pr_label[kvb-git-pr-label]
     update_branches[kvb-git-update-branches]
     branch_gc[kvb-git-branch-gc]
+    orphans_find[kvb-git-orphans-find]
     changelog[kvb-git-changelog]
     hotfix[kvb-git-hotfix]
   end
@@ -261,8 +263,11 @@ flowchart LR
 
   coordinate --> democracy
   cleanup --> democracy
-  cleanup --> branch_gc
+  cleanup --> orphans_find
   branch_gc --> democracy
+  orphans_find --> branch_gc
+  orphans_find --> choice
+  orphans_find --> operator
   funnel --> democracy
   funnel --> dialectic
   funnel --> subagent_model
@@ -312,7 +317,7 @@ flowchart LR
   dream --> dialectic
   dream --> optimize
   dream --> cleanup
-  dream --> branch_gc
+  dream --> orphans_find
   optimize --> skill_cleanup
   optimize --> transcend
   optimize --> autoskill