- Deleted the `ValidationVerdict` type and `evaluateOutputAgainstSchema` API from the output schema validator.
- Updated `yield.ts` to bind `buildOutputValidator`'s error directly to `schemaError` during validator setup.
- Removed the obsolete evaluator tests and adjusted validation success fixture to match the raw summary input shape.
- Unified output schema construction and validation by adding buildOutputValidator and using it in YieldTool and task executor.
- Added MAX_SCHEMA_RETRIES so YieldTool now retries schema failures three times with hints before overriding.
- Updated failure handling to use shared summarizeValidationFailure and formatters for required-field reporting.
- Added tests for output-schema-validator and YieldTool covering malformed schemas and nested-array retry edge cases.
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