Built from scratch: desktop tools, data pipelines, local agents
Complete teardowns of open-source projects: a browser with an in-process CDP implementation, a zero-runtime Rust agent, a 13 MB Windows SSH client, a single-file Markdown reader, a local-first personal assistant, and a 30k-row interview-experience pipeline. The point is never "what I built" but which trade-offs were made and what broke along the way.
A zero-server data pipeline built on GitHub Actions: incremental crawlers for three sites, idempotent sharded storage, and a two-stage map-reduce over a free model quota — plus the two silent failures that kept it green while doing nothing.
An open-source terminal client that stitches requirements, commits, tests, bugs and releases into one traceable chain — with an LLM layer that can only propose, never act.