revert: remove direct WebUI connection, focus on fixing LiteLLM streaming

- Reverted direct orchestrator connection to WebUI
- Added stream: true parameter to qwen-2.5-7b model config
- Keep LiteLLM as single proxy for all models

ai/compose.yaml

@@ -34,9 +34,9 @@ services:
       # Database configuration
       DATABASE_URL: postgresql://${AI_DB_USER}:${AI_DB_PASSWORD}@ai_postgres:5432/${AI_DB_NAME}
 
-      # OpenAI API configuration (pointing to LiteLLM proxy + direct RunPod orchestrator)
-      OPENAI_API_BASE_URLS: http://litellm:4000;http://100.121.199.88:9000/v1
-      OPENAI_API_KEYS: ${AI_LITELLM_API_KEY};dummy
+      # OpenAI API configuration (pointing to LiteLLM proxy)
+      OPENAI_API_BASE_URLS: http://litellm:4000
+      OPENAI_API_KEYS: ${AI_LITELLM_API_KEY}
 
       # Disable Ollama (we only use LiteLLM)
       ENABLE_OLLAMA_API: false