RAG preprocessing library — chunks UTF-8 text and verifies every chunk's byte range and SHA-256 hash against the source. Benchmarked against LangChain (byte-offset drift on non-ASCII text) and on 15 CUAD contracts (100% stale-chunk detection vs. 0% baseline).

A free, ad-free PWA that times Japanese interval walking — voice cues, chimes, and a streak-tracking progress screen.

A market-data replay tool — capture a live L2 crypto order-book feed, then scrub, seek, and replay it deterministically, reconstructing the same market state at the same timestamp every time.

Schema validation toolkit for content-rich systems and documentation pipelines.

Dependency-free TF-IDF similarity toolkit. Works in Node, browsers, and Obsidian.

Doc-driven testing validation — ensures tests reference documentation and those references stay valid.

Vanilla CSS design system and animated disclosure components. No build step required.

CLI tool for finding similar files across a codebase using TF-IDF.

A small, secure-by-default micro-framework experiment, islands-first.

Recommends a walk or an 8–10 min strength circuit based on what I already did today — a thin front door over two other apps, not a merged one.