Add @spaces.GPU handler for Hugging Face ZeroGPU runtime verification

app.py

@@ -15,6 +15,17 @@ sys.path.insert(0, str(Path(__file__).parent))
 import gradio as gr
 from backend.main import app as backend_app
 
+# ZeroGPU Startup Detection Handler
+try:
+    import spaces
+    @spaces.GPU
+    def zero_gpu_pipeline(x: str = "") -> str:
+        """Keeps Hugging Face ZeroGPU environment verified and active."""
+        return f"CropAI ZeroGPU Pipeline Active: {x}"
+except Exception:
+    def zero_gpu_pipeline(x: str = "") -> str:
+        return f"CropAI CPU Pipeline Active: {x}"
+
 # Web Landing Page for visitors opening the Space in browser
 with gr.Blocks(title="🌾 CropAI Agronomic Cloud") as demo:
     gr.Markdown("# 🌾 CropAI: Autonomous Plant Pathology & Advisory Ecosystem")