B-RX2K-track-404wolf-mdvalidate-rust-template-as-schema-markdown
https://github.com/404wolf/mdvalidate — MIT, Rust, v0.2.5 (Jan 2026), ~6 stars, self-described early-stage WIP; no JS/WASM binding. The ‘template IS the schema’ zipper: parse an annotated markdown template and an instance to trees, walk both in lockstep; holes become typed captures, so presence/order/unknown-section checks fall out of the walk.
Surfaced as design prior art (not an adoptable dependency) during the markdown-structure-validation ADR research — it seeded the template-zipper option and the contract-generates-template graft in the recommended architecture. Worth tracking: if it matures or grows bindings it becomes relevant to the Rust side of the two-plane split (rust-ontogen data plane) and as a cross-check of any zipper-style validation design.