fix: Import spaces before CUDA-related packages

RuntimeError: CUDA has been initialized before importing the `spaces` package

🔧 Fix:
- Move 'import spaces' to the very first import
- Must be imported before torch, transformers, or any CUDA packages
- Critical for ZeroGPU to work properly

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app.py

@@ -3,11 +3,11 @@ ZeroGPU version: Llama-2-Ko 7B with dynamic GPU allocation
 Requires: PRO subscription + ZeroGPU hardware selection in Space settings
 """
 
+import spaces  # ZeroGPU decorator - MUST be imported first!
 import os
 import gradio as gr
 from transformers import AutoModelForCausalLM, AutoTokenizer
 import torch
-import spaces  # ZeroGPU decorator
 
 # Get HF token from environment
 HF_TOKEN = os.getenv("HF_TOKEN", None)