Update app.py

app.py

@@ -12,7 +12,7 @@ from pydantic import BaseModel, Field
 # Environment variables / Constants
 # -------------------------------
 HF_DATASET_REPO = os.environ.get("HF_DATASET_REPO", "OppaAI/Robot_MCP")
-HF_VLM_MODEL = os.environ.get("HF_VLM_MODEL", "Qwen/Qwen3-VL-8B-Instruct")
+HF_VLM_MODEL = os.environ.get("HF_VLM_MODEL", "Qwen/Qwen2.5-VL-7B-Instruct")
 
 # -------------------------------
 # Pydantic schema for the tool payload