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zopu-code/repos/effect/.changeset/schema-ordered-arbitrary-constraints.md

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---
"effect": patch
---
Use generic ordered constraints for schema arbitrary derivation.
Range checks such as `isGreaterThan`, `isLessThan`, and `isBetween` now populate `ctx.constraints.ordered`
instead of type-specific range fields on `number`, `date`, or `bigint` constraints. Custom `toArbitrary`
annotations that read range constraints should migrate to `ctx.constraints.ordered`.
This also fixes BigDecimal arbitrary generation by adapting decimal bounds to the generated scale, avoiding
invalid fast-check bigint ranges for narrow decimal intervals.