chore: add bootstrap-siblings post-commit hook

Co-Authored-By: Svrnty Inc. <jp@svrnty.io>

lefthook.yml

@@ -66,6 +66,21 @@ post-commit:
         NEW_TOTAL_LINE=$((TOTAL_LINE + 1))
         sed -i "${NEW_TOTAL_LINE}s/Total: ${OLD_COUNT}/Total: ${NEW_COUNT}/" "$ROOT_CLAUDE"
         echo "REGISTRY: added '$REPO_NAME' to root CLAUDE.md (${DATE}, ${COMMIT})"
+    bootstrap-siblings:
+      run: |
+        REPO_ROOT=$(git rev-parse --show-toplevel)
+        HOOKS_DIR="$REPO_ROOT/../.svrnty-hooks"
+        [ -f "$HOOKS_DIR/lefthook.yml" ] || exit 0
+        [ -f "$HOOKS_DIR/CLAUDE.md.template" ] || exit 0
+        for sibling in "$REPO_ROOT"/../*/; do
+          [ -d "$sibling/.git" ] || continue
+          [ -f "$sibling/lefthook.yml" ] && continue
+          SNAME=$(basename "$sibling")
+          cp "$HOOKS_DIR/lefthook.yml" "$sibling/lefthook.yml"
+          cp "$HOOKS_DIR/CLAUDE.md.template" "$sibling/CLAUDE.md"
+          (cd "$sibling" && lefthook install 2>/dev/null)
+          echo "BOOTSTRAP: installed lefthook + CLAUDE.md in '$SNAME'"
+        done
 
 pre-push:
   commands: