feat(task-022): expand discovery coverage

tests/test_discovery_mapping.py

@@ -28,14 +28,14 @@ def test_mapping_file_exists() -> None:
     assert mapping_path.exists(), f"Mapping file missing: {mapping_path}"
 
 
-def test_mapping_contains_all_10_questions() -> None:
+def test_mapping_contains_all_questions() -> None:
     """Every core discovery question must appear in the mapping."""
     from rdb_discovery.templates import CORE_QUESTIONS
-    
+
     root = _get_project_root()
     mapping_path = root / MAPPING_FILE
     content = mapping_path.read_text(encoding="utf-8")
-    
+
     for question in CORE_QUESTIONS:
         assert question in content, f"Question not mapped: {question}"