feat: add utilities for easter, pagination, card expiry, and vector ops#948
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davedumto merged 1 commit intoMay 29, 2026
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…ry, and vector operations Resolves StreamFi-x#876: Easter date calculator with Meeus/Anonymous Gregorian algorithm Resolves StreamFi-x#849: Pagination endpoint with offset/limit Resolves StreamFi-x#858: Credit card expiry validator with months until expiry Resolves StreamFi-x#870: Vector operations (dot, cross, magnitude, normalize)
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What
Implements four utility endpoints for date calculations, array pagination, card validation, and vector math operations.
Issues Resolved
Closes #876
Closes #849
Closes #858
Closes #870
Changes
#876 - Easter Date Calculator
Computes Easter Sunday, Good Friday, and Easter Monday for a given Gregorian year using the Meeus/Anonymous algorithm. Validates year in range [1583, 4099].
#849 - Array Pagination
Paginates provided array with offset/limit parameters and returns metadata including total count, has_more flag, and next offset. Clamps limit to max 100.
#858 - Credit Card Expiry Validator
Validates card expiry dates (accepts 2 or 4 digit years) and computes months until expiry. Returns expired status and months remaining.
#870 - Vector Operations
Implements dot product, cross product (3D only), magnitude, and normalization operations for numeric vectors.