Use gh auth token for growth metrics

Fallback to the local gh auth token when GITHUB_TOKEN is not set so growth metrics runs avoid anonymous API rate limits. Also mock the gh token lookup in the regression test for cross-platform compatibility.

scripts/collect_growth_metrics.py

@@ -11,6 +11,7 @@ import argparse
 import datetime as dt
 import json
 import os
+import subprocess
 import sys
 import urllib.error
 import urllib.request
@@ -62,6 +63,20 @@ def github_headers() -> Dict[str, str]:
         "User-Agent": "funasr-growth-metrics",
     }
     token = os.environ.get("GITHUB_TOKEN")
+    if not token:
+        try:
+            completed = subprocess.run(
+                ["gh", "auth", "token"],
+                check=True,
+                stdout=subprocess.PIPE,
+                stderr=subprocess.DEVNULL,
+                text=True,
+                timeout=5,
+            )
+        except (OSError, subprocess.SubprocessError):
+            token = None
+        else:
+            token = completed.stdout.strip()
     if token:
         headers["Authorization"] = f"Bearer {token}"
     return headers
@@ -547,4 +562,4 @@ def main() -> int:
 
 
 if __name__ == "__main__":
-    raise SystemExit(main())
+    raise SystemExit(main())

tests/test_collect_growth_metrics.py

@@ -1,6 +1,7 @@
 import importlib.util
 import io
 import json
+import subprocess
 import sys
 from datetime import date, datetime, timezone
 from contextlib import redirect_stdout
@@ -21,6 +22,21 @@ def test_default_integration_prs_include_sglang_omni_fun_asr():
     assert "sgl-project/sglang-omni#898" in module.DEFAULT_INTEGRATION_PRS
 
 
+def test_github_headers_falls_back_to_gh_auth_token(monkeypatch):
+    module = load_growth_metrics_module()
+    monkeypatch.delenv("GITHUB_TOKEN", raising=False)
+
+    def fake_run(args, **kwargs):
+        assert args == ["gh", "auth", "token"]
+        return subprocess.CompletedProcess(args=args, returncode=0, stdout="cli-token\n")
+
+    monkeypatch.setattr(module.subprocess, "run", fake_run)
+
+    headers = module.github_headers()
+
+    assert headers["Authorization"] == "Bearer cli-token"
+
+
 def test_default_integration_prs_include_high_visibility_external_queue():
     module = load_growth_metrics_module()
 
@@ -622,4 +638,4 @@ def test_main_outputs_integrations_json(monkeypatch):
     integration = payload["integrations"][0]
     assert integration["pr"] == "ray-project/ray#64053"
     assert integration["checks"]["state"] == "success"
-    assert integration["next_action"] == "request review"
+    assert integration["next_action"] == "request review"