Changelog

0.2.2 - 2026-08-10

Make the published package self-describing. mix.exs resolved its dependencies through the workspace dependency-source registry, reading a config file two directories above itself — a path that exists in this checkout and not inside a published tarball, which does not ship build_support/. Any consumer resolving execution_plane from Hex failed while Mix loaded the dependency's project. 0.2.1 shipped with this defect.
Dependency source resolution now treats an absent registry as the ordinary state of a published package rather than a missing file, and falls back to the hex: requirement stated at the call site. Local development still resolves siblings by path, unchanged.

Remove two unreachable normalize_atomish/1 heads in ExecutionPlane.Placements.Capabilities. The function is only ever reached from the is_binary branch of fetch_member/4, so its atom and catch-all clauses were dead code the compiler had already proved unreachable. No behavioural change.

Publish execution_plane as the common core-only substrate; JSON-RPC and process runtime ownership now lives exclusively in their component packages.
Add the admitted interactive runtime lifecycle contracts, bounded runtime errors and status/events, attach and input envelopes, and their boundary codecs.
Replace the former execute/stream runtime-client callbacks with the start/subscribe/input/status/cancel lifecycle.

Initial release.