chore: release

[acp-release-bot]

🤖 New release

• agent-client-protocol-derive: 2.1.0 -> 2.1.1
• agent-client-protocol: 2.1.0 -> 2.1.1 (✓ API compatible changes)
• agent-client-protocol-polyfill: 2.1.0 -> 2.1.1
• agent-client-protocol-trace-viewer: 2.1.0 -> 2.1.1
• agent-client-protocol-conductor: 2.1.0 -> 2.1.1
• agent-client-protocol-http: 2.1.0 -> 2.1.1
• agent-client-protocol-cookbook: 2.1.0 -> 2.1.1
• agent-client-protocol-rmcp: 3.1.0 -> 3.1.1

Changelog

agent-client-protocol-derive

2.0.0 - 2026-07-23

Breaking changes

• Generated implementations now target agent-client-protocol 2.x and must not be mixed with
  core SDK 1.x types.

Added

• Support generic request, notification, and response types in the JSON-RPC derive macros, and
  accept any Rust type expression—including generic types such as Option<Response>—in a
  request's response attribute. (#267)

Changed

• Harden macro expansion with collision-resistant identifiers and fully qualified SDK paths.
  (#267)

agent-client-protocol

2.1.1 - 2026-09-07

Fixed

• (acp) support JavaScript-hosted WebAssembly (#308)

Fixed

• Support JavaScript-hosted wasm32-unknown-unknown builds through the opt-in
  wasm_js feature, which selects Web Crypto through wasm-bindgen as the UUID
  randomness backend. WASI builds continue to work without an additional
  feature. (#308)

agent-client-protocol-polyfill

2.1.0 - 2026-09-04

Added

• (acp) add proxy protocol router for v2 (#324)
• (acp) Add v2 proxy MCP attachment (#314)
• (polyfill) Support v2 MCP-over-ACP bridge (#305)

Added

• Add an unstable_protocol_v2 feature for using McpOverAcpPolyfill in a
  draft-v2 conductor chain. The polyfill selects the schema during proxy
  initialization, advertises the v2 ACP MCP capability when adapting an
  HTTP-capable agent, and handles v2 session setup and mcp/* messages without
  interpreting them as v1.

Fixed

• Route v1 and v2 initialization through strict version-specific proxy
  builders instead of disabling the ACP version guard.
• Forward MCP request cancellation hop by hop instead of tunneling the
  loopback connection's $/cancel_request ID inside mcp/message.

agent-client-protocol-trace-viewer

2.1.0 - 2026-09-04

Other

• update Cargo.lock dependencies

agent-client-protocol-conductor

2.1.0 - 2026-09-04

Added

• (unstable-v2) Add runnable v2 quickstart examples (#330)
• (unstable-v2) add v2 resume session builder (#329)
• (acp) add proxy protocol router for v2 (#324)
• (acp) Add v2 proxy MCP attachment (#314)
• (polyfill) Support v2 MCP-over-ACP bridge (#305)
• (conductor) add v2 proxy initialization (#302)

Added

• Add opt-in protocol-v2 initialization for agent and nested proxy chains
  through unstable_protocol_v2, including version-aware custom instantiator
  methods, raw v2 session creation routing, and the conductor binary.

agent-client-protocol-http

2.1.0 - 2026-09-04

Added

• (unstable-v2) Add runnable v2 quickstart examples (#330)

Fixed

• (http) Preserve outbound messages for slow streams (#292)

agent-client-protocol-cookbook

2.1.0 - 2026-09-04

Added

• (acp) add stable session restore builders (#347)
• (unstable-v2) Add runnable v2 quickstart examples (#330)
• (unstable-v2) add v2 resume session builder (#329)
• (acp) add proxy protocol router for v2 (#324)
• (acp) Add v2 proxy MCP attachment (#314)

Added

• Add a compiled draft-v2 one-shot prompt recipe that handles initialization,
  permissions, message patch projection, prompt acceptance, idle completion,
  and session close.

agent-client-protocol-rmcp

3.1.1 - 2026-09-07

Other

• updated the following local packages: agent-client-protocol

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This PR was generated with release-plz.