feat(registrar): verify full empty-projection rebuild

Assistant: codex
Assistant-Model: gpt-5.6-sol
Assistant-Session: 01a023c0-a0a3-7c03-b395-5a0d2757214d

src/repo_manager/cli.py

@@ -63,12 +63,18 @@ def main(argv: list[str] | None = None) -> int:
         help="Confirm that --api-base is the authoritative hub",
     )
     p_registrar.add_argument("--push", action="store_true", help="Push the registrar commit")
-    p_registrar.add_argument(
+    registrar_mode = p_registrar.add_mutually_exclusive_group()
+    registrar_mode.add_argument(
         "--repair-workplan",
         default=None,
         metavar="ID",
         help="Rebuild and verify one already-identified workplan projection",
     )
+    registrar_mode.add_argument(
+        "--bootstrap-empty-projection",
+        action="store_true",
+        help="Rebuild all authoritative UUIDs after proving the repo projection is empty",
+    )
 
     p_cmd = sub.add_parser(
         "update-task-status",
@@ -419,6 +425,7 @@ def main(argv: list[str] | None = None) -> int:
             confirm_primary=args.confirm_primary,
             push=args.push,
             repair_workplan=args.repair_workplan,
+            bootstrap_empty_projection=args.bootstrap_empty_projection,
         )
         print(json.dumps(result.to_dict(), indent=2))
         return 0 if result.status in {"applied", "noop"} else 1