chore: release v1.3.0

[github-actions]

🤖 New release

• rmcp-macros: 1.2.0 -> 1.3.0
• rmcp: 1.2.0 -> 1.3.0

Note: cargo-semver-checks reports breaking changes with all features, but the team has agreed to release as 1.3.0.

Changelog

rmcp-macros

1.3.0 - 2026-03-26

Added

• add local feature for !Send tool handler support (#740)

Other

• fix all clippy warnings across workspace (#746)

rmcp

1.3.0 - 2026-03-26

Added

• add "theme" to Icon (#766)
• (transport) add Unix domain socket client for streamable HTTP (#749)
• (auth) implement SEP-2207 OIDC-flavored refresh token guidance (#676)
• add configuration for transparent session re-init (#760)
• add local feature for !Send tool handler support (#740)

Fixed

• prevent CallToolResult and GetTaskPayloadResult from shadowing CustomResult in untagged enums (#771)
• drain in-flight responses on stdin EOF (#759)
• remove default type param from StreamableHttpService (#758)
• use cfg-gated Send+Sync supertraits to avoid semver break (#757)
• (rmcp) surface JSON-RPC error bodies on HTTP 4xx responses (#748)
• default CallToolResult content to empty vec on missing field (#752)
• (auth) redact secrets in Debug output for StoredCredentials and StoredAuthorizationState (#744)

Other

• add #[non_exhaustive] to remaining public structs (#768)
• fix all clippy warnings across workspace (#746)

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This PR was generated with release-plz.

[DaleSeo]

Holding off on this for now. The major bump to 2.0.0 is being triggered by the local feature added in #740, which intentionally relaxes Send + Sync bounds. Without local enabled, the public API is unchanged from 1.2.0.

Working on a fix to avoid the unnecessary major bump. Will update here once it's ready.