GRM-58: fix: enforce commit message convention on master with CI validation

scripts/ci/auto_merge.py

@@ -294,7 +294,7 @@ def main(branch: str, pr_title: str, repo: str, pr_number: str, label_name: str)
     conv_msg = extract_conventional_msg(commits)
     if not conv_msg:
         raise click.ClickException(_("Could not extract conventional commit message from PR commits."))
-    merge_title = f"{task_id} {conv_msg}"
+    merge_title = f"{task_id}: {conv_msg}"
 
     try:
         client.merge_pr(pr_number, merge_title)

scripts/ci/validate_commit_msg.py

@@ -37,11 +37,13 @@ def get_branch() -> str:
 
 @click.command()
 @click.argument("commit_msg_file")
-def main(commit_msg_file: str) -> None:
+@click.option("--branch", default=None, help="Override branch detection (for CI use).")
+def main(commit_msg_file: str, branch: str | None) -> None:
     with open(commit_msg_file) as f:
         msg = f.read().strip()
 
-    branch = get_branch()
+    if branch is None:
+        branch = get_branch()
     subject = first_line(msg)
 
     if branch == "master":