The Windows-footgun check is red on current main, not just on this branch:
a2c42be93c added `encoding="utf-8"` to one `write_text` in this file and
missed the other two.
Line 190 is what the checker reports. Line 211 has the same defect but the
call is split across lines, so the single-line regex never flagged it —
fixing only the reported site would have left the same bug in the file and
re-armed it for the next reader.
Both now pass an explicit encoding, matching line 68.
