edikt core.
Home of the [Value] model, the [Feature] capability enum, and the
expression language (lexer, [parse], evaluator). The evaluator is built and
tested here against a plain in-memory [Value] so the language is correct
independent of any format-preserving CST; the format modules wire the same
AST to their CSTs.
The format-agnostic Document and Convert seams arrive with the JSONC
slice, once there is a concrete CST to shape them against.