feat(agent): complete closed-loop runtime and pricing fallback

backend/src/core/config/static/database/llm_catalog.yaml

@@ -15,11 +15,11 @@ factories:
       request_url: https://api.deepseek.com/v1
       avatar: https://registry.npmmirror.com/@lobehub/icons-static-png/latest/files/light/deepseek-color.png
 
-    - name: volcengine-ark
+    - name: volcengine
       request_url: https://ark.cn-beijing.volces.com/api/v3
       avatar: https://registry.npmmirror.com/@lobehub/icons-static-png/latest/files/light/doubao-color.png
 
-    - name: z-ai
+    - name: zai
       request_url: https://api.z.ai/api/paas/v4
       avatar: https://registry.npmmirror.com/@lobehub/icons-static-png/latest/files/light/zai.png