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Changelog — clients/go (Go)

All notable changes to the Go client module are documented here. See ../../CHANGELOG.md for the protocol spec changelog and release-metadata.json for the machine-readable mapping between the current source tree and protocol versions.

The format is based on Keep a Changelog and the module follows SemVer.

The publish-go.yml workflow refuses to publish a clients/go/vX.Y.Z tag whose matching ## [X.Y.Z] heading is missing from this file.

[Unreleased]

Added

  • status and error fields on ChangesetOperation and the changeset/operationStatusChanged action, tracking the idle → running → error lifecycle of a changeset operation.
  • AgentCustomization._meta provider metadata field.
  • Optional changes field on SessionSummary (ChangesSummary with optional additions, deletions, and files counts) summarising a session's file-change footprint.

Changed

  • Renamed the ChangesetSummary type to Changeset. The on-the-wire shape is unchanged.
  • Moved the changesets catalogue from SessionSummary to SessionState. The session/changesetsChanged action now updates state.changesets directly instead of state.summary.changesets.

Removed

  • Removed the additions, deletions, and files fields from ChangesetSummary. Aggregate counts now live on SessionSummary.changes; per-changeset views derive their own totals from ChangesetState.files.

[0.1.0] — 2026-05-28

Implements AHP 0.2.0.

First published version of the Go module. Includes:

  • ahptypes — generated wire types from types/*.ts, including the extended resource* family (resourceResolve, resourceMkdir, createResourceWatch, the new ahp-resource-watch:/ channel with the resourceWatch/changed action), ResourceWriteParams's mode / position / ifMatch fields, the new Conflict (-32011) error code, and the bidirectional content-bearing resource* surface exposed on both CommandMap and ServerCommandMap. Structs use Go JSON struct tags that preserve the canonical camelCase wire names; discriminated unions are concrete wrapper structs that round-trip via custom MarshalJSON / UnmarshalJSON; bitset enums are typed uint32 with named flag constants and helpers.
  • UserMessage._meta optional map field, generated as Map[string]json.RawMessage, exposing the new spec-level provider metadata channel on user messages.
  • ahp — async Client driven by a pluggable Transport, pure ApplyActionToRoot / ApplyActionToSession / ApplyActionToTerminal / ApplyActionToChangeset reducers, MultiHostClient runtime under ahp/hosts, MultiHostStateMirror helper.
  • ahpws — WebSocket transport built on github.com/coder/websocket, matching the Rust ahp-ws crate's API shape.