Match semantic tests to formatted archive counts

Keep the existing semantic assertions while matching the generated human-readable thousands separators in the 1,051-file README counts.

tools/test_semantic_consistency.py

@@ -251,7 +251,7 @@ class SemanticConsistencyTests(unittest.TestCase):
         audio_count = sum(row["has_audio"].lower() == "true" for row in active)
         percentage = 100 * audio_count / len(active)
         readme = (ROOT / "README.md").read_text(encoding="utf-8")
-        expected = rf"{audio_count} of\s+{len(active)}, or {percentage:.1f}%"
+        expected = rf"{audio_count:,} of\s+{len(active):,}, or {percentage:.1f}%"
         self.assertRegex(readme, re.compile(expected))
 
     def test_readme_headline_matches_active_index_facts(self) -> None:
@@ -267,7 +267,7 @@ class SemanticConsistencyTests(unittest.TestCase):
             f"{latest.strftime('%B')} {latest.day}, {latest.year}"
         )
 
-        self.assertIn(f"{len(active)} indexed video files", normalized)
+        self.assertIn(f"{len(active):,} indexed video files", normalized)
         self.assertIn(date_span, normalized)
         self.assertIn(f"{total_bytes:,} indexed video bytes", normalized)