# ADR-0003: Use Project-Local `.air` State

- Status: Accepted
- Date: 2026-05-27

## Context

AirCoding sessions, artifacts, rules, plans, backups, and debug evidence must be resumable and portable with the project where possible, while still keeping private/local state out of normal source sharing.

## Decision

Use project-local `.air/` as the source of truth:

```text
<project>/.air/shared/  # git-shareable project config, rules, plan docs
<project>/.air/local/   # private sessions, artifacts, backups, workspaces, local DBs
```

Session DBs live at:

```text
<project>/.air/local/sessions/<session-id>/session.db
```

## Consequences

- Project state can move with the project directory.
- `.air/shared/` can be versioned; `.air/local/` is gitignored by default.
- Runtime recovery uses project-local SQLite and artifacts.
- Global `~/.air/` remains config/cache/log/index state, not session source of truth.