Sync from dev @ 14435d1

Source: main (14435d1)
Excluded: live tenant exports, generated artifacts, and dev-only tooling.

scripts/apply_reviewer_rejections.py

@@ -205,7 +205,14 @@ def main() -> int:
     pr = prs[0]
     pr_id = int(pr.get("pullRequestId"))
 
-    _run_git(args.repo_root, ["fetch", "--quiet", "origin", baseline_branch, drift_branch])
+    _run_git(args.repo_root, ["fetch", "--quiet", "origin", baseline_branch])
+    try:
+        _run_git(args.repo_root, ["fetch", "--quiet", "origin", drift_branch])
+    except RuntimeError as exc:
+        if "couldn't find remote ref" in str(exc).lower() or "could not find remote ref" in str(exc).lower():
+            print(f"Drift branch '{drift_branch}' not found on origin; nothing to reject.")
+            return 0
+        raise
     diff_paths = _run_diff_name_only(args.repo_root, baseline_branch, drift_branch)
     changed_paths = {
         p.strip()