refactor: simplify zod-adapter to use Zod 4's built-in toJSONSchema#13
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refactor: simplify zod-adapter to use Zod 4's built-in toJSONSchema#13
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Leverage Zod 4's native toJSONSchema() method instead of manually parsing internal _def structure. This reduces adapter complexity from ~250 lines to ~85 lines and improves maintainability. - Update peer dependency from zod ^3.0.0 to ^4.0.0 - Replace manual type inspection with schema.toJSONSchema() call - Update isZodSchema to detect toJSONSchema method presence - Simplify tests to use actual Zod schemas instead of mocks
Update installation docs to specify Zod 4 or later is required for structured output validation with the SDK.
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Leverage Zod 4's native toJSONSchema() method instead of manually
parsing internal _def structure. This reduces adapter complexity
from ~250 lines to ~85 lines and improves maintainability.