fix(tests,registry): outdated language test-list + cache overwrite tiebreak bug

scripts/persistent_registry.py

@@ -572,10 +572,17 @@ def get_cached_result(
             return None
 
         conn = self._connect()
+        # Tiebreak on the autoincrement id (monotonic) in addition to
+        # timestamp: set_cached_result() does a plain INSERT (not an
+        # upsert), so two writes for the same (command, file_set_hash) in
+        # quick succession can land on the same time.time() value (limited
+        # clock resolution) — ORDER BY timestamp alone then returns
+        # whichever row SQLite picks arbitrarily on the tie, which can be
+        # the stale one.
         row = conn.execute(
             """SELECT result_json FROM analysis_cache
                WHERE command = ? AND file_set_hash = ?
-               ORDER BY timestamp DESC LIMIT 1
+               ORDER BY timestamp DESC, id DESC LIMIT 1
             """,
             (command, file_set_hash),
         ).fetchone()

tests/test_node_types.py

@@ -162,10 +162,13 @@ def test_unknown_language_raises(self):
 
 
 class TestGetSupportedLanguages:
-    """``get_supported_languages()`` lists all 7 tree-sitter languages."""
+    """``get_supported_languages()`` lists all 13 tree-sitter languages."""
 
+    # Issue #198 added go/java/php/ruby/c/cpp (6 languages) alongside the
+    # original 7 (python/rust/javascript/typescript/tsx/css/html) -> 13 total.
     EXPECTED_LANGUAGES = {
-        "python", "rust", "javascript", "typescript", "tsx", "css", "html"
+        "python", "rust", "javascript", "typescript", "tsx", "css", "html",
+        "go", "java", "php", "ruby", "c", "cpp",
     }
 
     def test_all_expected_languages_present(self):