KarpelesLab / strtotime / 24321393499

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Emulate PHP date_parse quirks: invalid dates, hour 24, compound keywords

- parseInvalidISOFormatInto / parseInvalidMonthNameDateInto: out-of-range
  dates (2023-02-29, Feb 29 2023, 2023-00-15, 2023-04-31) still report
  year/month/day plus a warning "The parsed date was invalid" at position
  len(str)+1 (PHP timelib uses 1-past-end for this marker).
- tryParseTimeExpression accepts hour=24 and emits
  "The parsed time was invalid" — matches PHP's tolerant 24:00:00 handling.
- Added tryParseDayKeyword for in-stream "tomorrow" / "yesterday" / "today"
  / "now". Combined with the existing weekday + time-keyword handlers, PHP's
  "tomorrow noon" / "noon tomorrow" / "monday 10am" / "10am tomorrow" etc.
  now produce the correct hour + relative semantics (last token wins for
  hour; weekday/tomorrow tokens reset hour to 0 and set day offset).
- tryWeekdayPrefixReparse rejects bare-time tails so "monday 10am" is
  parsed by the token parser as weekday + time, not anchored to today.
- copyComponents now forwards the Warnings/Errors maps from sub-parsers.

Suite: 334 PHP parity cases.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

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