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fix: no-panic temporal phrase resolution - #251
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Date arithmetic in the temporal resolver (add_days, month offsets, combine) could panic on out-of-range results. Make the resolution helpers return Option and propagate None instead, so a pathological phrase or anchor date degrades to 'no resolution' rather than a panic in library code. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Date arithmetic in the temporal resolver panics on out-of-range inputs:
add_daysischecked_add(...).unwrap(), and several resolvers build dates withDate::from_calendar_date(...).unwrap(). A phrase resolved against an anchor date near the edge of the representable range panics inside library code.This changes the resolution helpers to return
Optionand propagateNone, so those inputs degrade to no resolution instead of a panic. Inputs that resolved before resolve to the same values; 342 lib tests pass withtemporal_trackenabled.