scan_library and collect_shaders read CMakeLists.txt, the ISA table and the opcode header with the locale codec. On Windows that is cp1252, so a UTF-8 file containing U+2010 or U+2192 raised UnicodeDecodeError. These reads now pass encoding="utf-8" and errors="ignore", and a subprocess test with an ASCII default codec covers it.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01V9UU71SP1UKGR51Sowbgmq
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