Upload app.py with huggingface_hub

app.py

@@ -47,8 +47,14 @@ TOOLS = {
 # ============================================
 
 from huggingface_hub import InferenceClient
+import os
 
-client = InferenceClient(model="Qwen/Qwen2.5-72B-Instruct")
+# Get token from environment or use free tier
+HF_TOKEN = os.environ.get("HF_TOKEN")
+client = InferenceClient(
+    model="Qwen/Qwen2.5-72B-Instruct",
+    token=HF_TOKEN
+)
 
 SYSTEM = """You are AI7, a helpful AI assistant.