Repair a JSON value toward a schema using only the coercions the caller declares

Overview

Validates a JSON value against a caller-supplied JSON Schema 2020-12 and applies only the coercions you list (for example string-to-integer for "42", trim-strings, enum-case, apply-defaults, drop-additional) when each one strictly reduces the number of schema errors. Every change is returned with its JSON pointer, the rule, the old and new value; every error that remains is returned with its exact path and keyword. Refuses lossy coercions: "007" stays a string, "1,000" and "0

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