Add minimal Unicode crash reproduction test

Author: rishav-karanjit

.github/workflows/debug-unicode.yml

@@ -0,0 +1,27 @@
+name: Debug Unicode Crash
+
+on:
+  push:
+
+jobs:
+  debug-unicode:
+    runs-on: windows-latest
+    strategy:
+      matrix:
+        python: ["3.14"]
+        architecture: [x86, x64]
+    steps:
+      - uses: actions/checkout@v4
+      
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python }}
+          architecture: ${{ matrix.architecture }}
+      
+      - name: Run minimal Unicode test
+        run: python debug_unicode.py
+      
+      - name: Run with pytest
+        run: |
+          pip install pytest
+          pytest debug_unicode.py -v

debug_unicode.py

@@ -0,0 +1,22 @@
+#!/usr/bin/env python3
+"""Minimal reproduction for Windows x86 Unicode crash"""
+
+import warnings
+import sys
+
+def test_unicode_warning():
+    """Test that triggers Unicode in warnings system"""
+    unicode_string = "\U00010002abc--abc\u79d8\u5bc6\u4ee3\u7801-\u79d8\u5bc6\u4ee3\u7801"
+    
+    print(f"Python version: {sys.version}")
+    print(f"Platform: {sys.platform}")
+    print(f"Architecture: {sys.maxsize > 2**32}")
+    print(f"Unicode string: {repr(unicode_string)}")
+    
+    # Trigger a warning with Unicode content
+    warnings.warn(f"Test warning with Unicode: {unicode_string}")
+    
+    print("Test completed successfully")
+
+if __name__ == "__main__":
+    test_unicode_warning()