Mihaela Mihaljevic 01650a454e fix(schema): reject year 0000 in dateTime, date, gYearMonth, gYear ... XSD 1.0 has no year zero (the year before 0001 is -0001), so 0000-01-01T00:00:00 and the other 0000 forms are not valid values. DateTimeParser.parseYearOnly now rejects a zero magnitude for both signs, so negative years like -0001 still parse. Closes the XSTS dateTime011 false negative: invalid-instances-accepted 31 -> 30, no other bucket moved (valid-schemas-rejected and valid-instances-rejected held at 0). 1449 unit tests pass; the full XSTS suite settles at 0/43/0/30.		2026-06-20 01:31:14 +02:00
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2026-06-18-false-negative-tail.md	fix(schema): reject year 0000 in dateTime, date, gYearMonth, gYear	2026-06-20 01:31:14 +02:00