0c62ab9de6
Phase 13.1. The test runner script crashed on UnicodeEncodeError at line 185 (the summary table print). Without this fix, the test suite cannot run to completion. Fix: sys.stdout.reconfigure(encoding='utf-8', errors='replace') at the start of main(). This is the FIRST action of Phase 13 -- without it, no other test verification is possible. The crash was triggered by box-drawing characters (U+2502 etc.) in the summary table being printed to a Windows console using cp1252 encoding. The reconfigure enables UTF-8 output on Windows and is a no-op on Linux/macOS where stdout is already UTF-8 by default.