fix: recount commits touching a path once stale

The commit list behind the triage drift score was cached for good,
so pushes upstream never moved a profile up the triage. It now
expires like the other moving answers.

scripts/upstream.py

@@ -773,7 +773,9 @@ def commits_touching(
             f"{repo.api_base}/repos/{repo.slug}/commits"
             f"?path={quoted}&since={stamp}&limit=100"
         )
-    payload = _api(url, cache_dir, offline)
+    # The list grows with every push touching the path: cached for good, the
+    # triage drift score stayed at whatever the first run counted.
+    payload = _api(url, cache_dir, offline, MOVING_TTL)
     if not isinstance(payload, list):
         return 0
     return sum(

tests/test_upstream.py

@@ -648,6 +648,30 @@ class TestCompare(unittest.TestCase):
             upstream.commits_touching(self.repo, "a.c", "tip", self.dir, head="tip"), 0
         )
 
+    def test_commits_touching_is_recounted_once_stale(self):
+        """The list grows with every push: cached for good, the triage drift
+        score stayed at what the first run counted."""
+        import os as _os
+
+        served = {
+            "commits/base": {"commit": {"committer": {"date": "2026-01-01T00:00:00Z"}}},
+        }
+        listing = [{"sha": "1"}]
+
+        def answer(url):
+            for key, value in served.items():
+                if url.endswith(key):
+                    return value
+            return list(listing)
+
+        upstream._http_json = answer
+        self.assertEqual(upstream.commits_touching(self.repo, "a.c", "base", self.dir), 1)
+        for cached in (Path(self.dir) / "_api").glob("*.json"):
+            stale = _os.path.getmtime(cached) - upstream.MOVING_TTL - 1
+            _os.utime(cached, (stale, stale))
+        listing.extend([{"sha": "2"}, {"sha": "3"}])
+        self.assertEqual(upstream.commits_touching(self.repo, "a.c", "base", self.dir), 3)
+
 
 class TestGitlabTree(unittest.TestCase):
     def setUp(self):