scripts/check_kernel_freshness: include kernel_dir in stale report items

scripts/check_kernel_freshness.py

@@ -256,7 +256,7 @@ def _format_freshness_report(results: list[dict], skipped_kernels: list[str]) ->
 
     items = []
     for result in sorted_results:
-        items.append(f"• {result['source_url']}: upstream is {result['days_behind']} days newer")
+        items.append(f"• {result['kernel_dir']} ({result['source_url']}): upstream is {result['days_behind']} days newer")
 
     report = f"{heading}\n\n" + "\n".join(items)
 

scripts/test_kernel_freshness_lookup.py

@@ -1,4 +1,5 @@
 import sys
+from datetime import datetime
 from pathlib import Path
 
 from check_kernel_freshness import KERNEL_SOURCE_MAPPING
@@ -66,11 +67,48 @@ def test_kernel_mapping_completeness(root_path: Path) -> bool:
     return all_passed
 
 
+def test_freshness_report_includes_kernel_dir() -> bool:
+    """Verify that _format_freshness_report includes kernel_dir in each line.
+
+    Regression test for: multiple kernels sharing the same source_url would
+    produce duplicate, unactionable alert lines with no local directory name.
+    """
+    from datetime import timezone
+    from check_kernel_freshness import _format_freshness_report
+
+    shared_url = "https://github.com/Dao-AILab/flash-attention"
+    now = datetime.now(tz=timezone.utc)
+    results = [
+        {"kernel_dir": "flash-attn2", "source_url": shared_url, "days_behind": 12,
+         "upstream_date": now, "local_date": now},
+        {"kernel_dir": "flash-attn3", "source_url": shared_url, "days_behind": 5,
+         "upstream_date": now, "local_date": now},
+    ]
+
+    report = _format_freshness_report(results, skipped_kernels=[])
+
+    all_passed = True
+    for result in results:
+        if result["kernel_dir"] not in report:
+            print(f"❌ ERROR: '{result['kernel_dir']}' not found in freshness report")
+            all_passed = False
+
+    if all_passed:
+        print("✅ _format_freshness_report correctly includes kernel_dir in each report line")
+
+    return all_passed
+
+
 def main() -> int:
     root_path = Path(__file__).parent.parent.resolve()
     print(f"Testing kernel mapping in: {root_path}\n")
 
-    if test_kernel_mapping_completeness(root_path):
+    results = [
+        test_kernel_mapping_completeness(root_path),
+        test_freshness_report_includes_kernel_dir(),
+    ]
+
+    if all(results):
         print("\n✅ All tests passed!")
         return 0
     else: