Explicit-period quantity spec for delta successors

Shipped

16 ஜூலை, 2026 அன்று 7:52 AM UTC

Author

Kamo

Commit

545a429

RequirementQuantity gains an explicit periods list (+ deltaJson builder); when present it IS the required set, so a successor can be scoped to "just send August". PeriodCoverageEvaluator honors it and exposes requiredKeys(). Pure/additive.