chore: add more health info for n8n, refs NOISSUE

ai_software_factory/main.py

@@ -323,10 +323,16 @@ async def get_n8n_health():
     """Check whether the configured n8n instance is reachable."""
     api_url = _resolve_n8n_api_url()
     if not api_url:
-        return {'status': 'error', 'message': 'N8N_API_URL or N8N_WEBHOOK_URL is not configured'}
+        return {
+            'status': 'error',
+            'message': 'N8N_API_URL or N8N_WEBHOOK_URL is not configured.',
+            'api_url': '',
+            'auth_configured': bool(database_module.settings.n8n_api_key),
+            'checks': [],
+            'suggestion': 'Set N8N_API_URL to the base n8n address before provisioning workflows.',
+        }
     agent = N8NSetupAgent(api_url=api_url, webhook_token=database_module.settings.n8n_api_key)
-    result = await agent.health_check()
-    return {'status': 'ok' if not result.get('error') else 'error', 'data': result}
+    return await agent.health_check()
 
 
 @app.post('/n8n/setup')