Compare two Ruby hash literals and return exactly what changed: changed values with before/after, added and removed keys, and explicit type changes (nil to String, Integer to Float, symbol vs string keys). Pass either expected and actual as Ruby hash strings, or pass raw failing Minitest/RSpec output in raw and the first two hash literals found will be compared. Much cheaper and more reliable than eyeballing large nested hashes in test output.

Parse a Ruby hash or array literal (hashrockets, symbol keys, shorthand syntax, nesting, nil/true/false) and return clean JSON with alphabetically sorted keys. Symbols are rendered as ":name" strings.