AI coding work shouldn't belong to the agent that did it.

Harnie is a harness-independent work state layer for coding agents. It reads sessions from tools like Pi, OpenCode, and Codex, turns what happened into durable work state, and lets that state move with you.

Start something in Pi. Pick it up in Codex. Inspect what happened later. Harnie keeps the goal, decisions, findings, artifacts, next steps, and provenance without requiring the original harness to still be in the loop.

Harnie sits alongside the tools you already use. It doesn't modify their sessions or require a hosted control plane. Observed events and derived state live locally in SQLite, and continuation handoffs are plain Markdown.

The important part is provenance: Harnie doesn't just generate a summary and call it memory. Derived claims remain traceable to the source events they came from.

The workflow is intentionally small: import a session, inspect the resulting work state and provenance, then hand it off when you want to continue somewhere else.

Harnie is built by Boring Infra Co. around a simple idea:

Agents come and go. Good work stays.