fix: recover eligible model GPU routes

tests/test_modelscope_discovery.py

@@ -93,6 +93,31 @@ class ModelScopeDiscoveryTests(unittest.TestCase):
         self.assertEqual([], models)
         self.assertEqual(50, http_client.queries[0]["page_size"])
 
+    def test_popular_sort_uses_separate_page_cache(self) -> None:
+        http_client = RecordingHttpClient()
+        discovery = HuggingFaceDiscovery(http_client=http_client)  # type: ignore[arg-type]
+
+        discovery.list_recent_models(pipeline_tags=["text-generation"], limit=50, min_downloads=0)
+        discovery.list_recent_models(
+            pipeline_tags=["text-generation"], limit=50, min_downloads=0, sort="downloads"
+        )
+        self.assertEqual(["last_modified", "downloads"], [item["sort"] for item in http_client.queries])
+
+    def test_popular_scan_rotates_bounded_page_windows(self) -> None:
+        http_client = RecordingHttpClient()
+        discovery = HuggingFaceDiscovery(http_client=http_client)  # type: ignore[arg-type]
+
+        for _ in range(2):
+            discovery.list_recent_models(
+                pipeline_tags=["text-generation"],
+                limit=200,
+                min_downloads=50,
+                sort="downloads",
+                rotate_pages=True,
+            )
+
+        self.assertEqual([1, 5], [item["page_number"] for item in http_client.queries])
+
     def test_rate_limited_page_keeps_previous_pages_and_resumes_from_cache(self) -> None:
         http_client = RateLimitedPageClient()
         discovery = HuggingFaceDiscovery(