MercuryToolbox/fixtures/json-family/tonl

TONL v1 fixture assumptions

These fixtures define Mercury Toolbox's Rust-native TONL v1 surface for tests and examples.

The representation is JSON-backed and line-oriented:

• A document object is written as key = <JSON value> per non-empty line.
• Record streams are separated by ---.
• Lines beginning with # are comments.
• Values after = must be valid JSON literals, arrays, or objects.
• Non-object root values are represented by the reserved $ = <JSON value> key.

This keeps TONL deterministic, streamable, and easy to convert to and from JSON or JSONL without a Node/TypeScript runtime.