[ML] Apply required team and type labels to automated version-bump PRs

dev-tools/bump_main_minor_freeze.sh

@@ -179,6 +179,11 @@ pr_cmd=(
     --body "$pr_body"
     --label "ci:skip-es-tests"
     --label "no-backport"
+    # Repo policy requires a team label and a type label on every PR. :ml is
+    # the team label; >build marks this as a no-changelog build change. Keeping
+    # the automated freeze bump PR compliant on open, same as bump_version.sh.
+    --label ":ml"
+    --label ">build"
 )
 if [[ "${VERSION_BUMP_NO_MERGE:-}" != "true" ]]; then
     if [[ "${VERSION_BUMP_MERGE_AUTO:-}" == "true" ]]; then

dev-tools/bump_version.sh

@@ -178,6 +178,12 @@ EOF
         --title "[ML] Bump version to ${target_version}"
         --body "$pr_body"
         --label "ci:skip-es-tests"
+        # Repo policy requires a team label and a type label on every PR. :ml is
+        # the team label; >build marks this as a no-changelog build change.
+        # Applying them here means the automated bump PRs open compliant rather
+        # than needing a human to add them by hand (e.g. #3135).
+        --label ":ml"
+        --label ">build"
     )
     if [[ "${VERSION_BUMP_NO_MERGE:-}" != "true" ]]; then
         if [[ "${VERSION_BUMP_MERGE_AUTO:-}" == "true" ]]; then

dev-tools/unittest/test_job_version_bump_pipeline.py

@@ -14,6 +14,7 @@
 
 import json
 import os
+import re
 import subprocess
 import sys
 from pathlib import Path
@@ -197,6 +198,31 @@ def test_create_pr_script_requires_body() -> None:
     assert "--body" in proc.stderr
 
 
+def _asserts_label(script: str, label: str) -> bool:
+    """True if the script passes ``--label <label>`` in any common quoting style.
+
+    Tolerates double quotes, single quotes, or no quotes so a harmless requote
+    of the argument doesn't fail the guard while the behaviour is unchanged.
+    """
+    pattern = rf"--label\s+(?:\"{re.escape(label)}\"|'{re.escape(label)}'|{re.escape(label)})(?:\s|\))"
+    return re.search(pattern, script) is not None
+
+
+def test_bump_version_pr_applies_required_labels() -> None:
+    """Automated bump PRs must open with the labels repo policy requires.
+
+    :ml is the team label, >build is the type label marking a no-changelog
+    build change, and ci:skip-es-tests keeps the ES test suite off a pure
+    version bump. Both automated PR creators (patch bump and main minor-freeze
+    bump) must open compliant instead of needing a human to add them by hand
+    (e.g. #3135).
+    """
+    for name in ("bump_version.sh", "bump_main_minor_freeze.sh"):
+        script = (_REPO_ROOT / "dev-tools" / name).read_text()
+        for label in ("ci:skip-es-tests", ":ml", ">build"):
+            assert _asserts_label(script, label), f"{name}: missing --label {label}"
+
+
 def test_phase2_minor_has_parallel_freeze_group() -> None:
     pipeline = _run_phase2_minor()
     group = pipeline["steps"][0]