Release AHP Swift Package v0.3.0 · microsoft/agent-host-protocol

[0.3.0] — 2026-06-05

Implements AHP 0.3.0.

McpServerCustomization now exposes the full MCP lifecycle: enabled,
the discriminated McpServerState enum
(.starting/.ready/.authRequired/.error/.stopped), optional
channel URI for the mcp:// side-channel, and optional mcpApp
block carrying AhpMcpUiHostCapabilities for MCP Apps.
McpServerAuthRequiredState carries ProtectedResourceMetadata
plus reason / requiredScopes / description so the existing
authenticate command can drive per-server auth.
Customization.mcpServer top-level case — hosts MAY surface bare
MCP servers directly rather than only inside a plugin or directory.
SessionMcpServerStateChangedAction and matching reducer arm —
narrow upsert of state + channel on an existing MCP
server customization by id. Wired through both Reducers.swift and
the protocol-based NativeReducer.swift.
ClientCapabilities struct on InitializeParams.capabilities with
first entry mcpApps.
changeKind field on Changeset (well-known values: 'session',
'branch', 'uncommitted', 'turn', 'compare-turns').
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.

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 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.