fix: set UTF-8 encoding for Windows CLI compatibility

Author: firefox-669

openspace_openhands_evolution/__main__.py

@@ -4,6 +4,14 @@
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 """
 
+# Set UTF-8 encoding for Windows compatibility
+import os
+if sys.platform == 'win32':
+    os.environ['PYTHONIOENCODING'] = 'utf-8'
+    import io
+    sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding='utf-8')
+    sys.stderr = io.TextIOWrapper(sys.stderr.buffer, encoding='utf-8')
+
 import asyncio
 import argparse
 import sys