feat(api): expose database target in health refs NOISSUE

ai_software_factory/main.py

@@ -190,9 +190,12 @@ def read_api_info():
 @app.get('/health')
 def health_check():
     """Health check endpoint."""
+    runtime = database_module.get_database_runtime_summary()
     return {
         'status': 'healthy',
-        'database': 'sqlite' if database_module.settings.use_sqlite else 'postgresql',
+        'database': runtime['backend'],
+        'database_target': runtime['target'],
+        'database_name': runtime['database'],
     }