feat: add Gradio import handling and Windows compatibility for asyncio

local_demo.py

@@ -7,11 +7,13 @@ Calistir:
 
 from __future__ import annotations
 
+import asyncio
 import argparse
 import csv
 import json
 import pickle
 import socket
+import sys
 import time
 import warnings
 from collections import Counter
@@ -19,7 +21,22 @@ from dataclasses import dataclass
 from pathlib import Path
 from typing import Any
 
-import gradio as gr
+if sys.platform == "win32" and hasattr(asyncio, "WindowsSelectorEventLoopPolicy"):
+    # Gradio/Uvicorn is more stable with the selector loop on Windows.
+    asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())
+
+try:
+    import gradio as gr
+except ModuleNotFoundError as exc:
+    if exc.name == "gradio":
+        raise SystemExit(
+            "Gradio bu Python kurulumunda yok.\n"
+            f"Kullandigin yorumlayici: {sys.executable}\n"
+            "Kurulum komutu:\n"
+            f'  "{sys.executable}" -m pip install -r requirements.txt'
+        ) from exc
+    raise
+
 import numpy as np
 
 from app.training.extract_features_batch import extract_sample_features