chore: release v0.12.0

[github-actions]

🤖 New release

• rmcp-macros: 0.11.0 -> 0.12.0
• rmcp: 0.11.0 -> 0.12.0 (⚠ API breaking changes)

⚠ rmcp breaking changes

--- failure auto_trait_impl_removed: auto trait no longer implemented ---

Description:
A public type has stopped implementing one or more auto traits. This can break downstream code that depends on the traits being implemented.
        ref: https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.45.0/src/lints/auto_trait_impl_removed.ron

Failed in:
  type TokioChildProcessOut is no longer Sync, in /tmp/.tmpnJNKwA/rust-sdk/crates/rmcp/src/transport/child_process.rs:63
  type TokioChildProcess is no longer Sync, in /tmp/.tmpnJNKwA/rust-sdk/crates/rmcp/src/transport/child_process.rs:39
  type TokioChildProcess is no longer Sync, in /tmp/.tmpnJNKwA/rust-sdk/crates/rmcp/src/transport/child_process.rs:39
  type ChildWithCleanup is no longer Sync, in /tmp/.tmpnJNKwA/rust-sdk/crates/rmcp/src/transport/child_process.rs:44

--- failure constructible_struct_adds_field: externally-constructible struct adds field ---

Description:
A pub struct constructible with a struct literal has a new pub field. Existing struct literals must be updated to include the new field.
        ref: https://doc.rust-lang.org/reference/expressions/struct-expr.html
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.45.0/src/lints/constructible_struct_adds_field.ron

Failed in:
  field AuthorizationMetadata.response_types_supported in /tmp/.tmpnJNKwA/rust-sdk/crates/rmcp/src/transport/auth.rs:165

--- failure enum_variant_added: enum variant added on exhaustive enum ---

Description:
A publicly-visible enum without #[non_exhaustive] has a new variant.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#enum-variant-new
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.45.0/src/lints/enum_variant_added.ron

Failed in:
  variant ServerRequest:CustomRequest in /tmp/.tmpnJNKwA/rust-sdk/crates/rmcp/src/model.rs:1863
  variant ClientRequest:CustomRequest in /tmp/.tmpnJNKwA/rust-sdk/crates/rmcp/src/model.rs:1798
  variant ServerNotification:CustomNotification in /tmp/.tmpnJNKwA/rust-sdk/crates/rmcp/src/model.rs:1872
  variant ClientNotification:CustomNotification in /tmp/.tmpnJNKwA/rust-sdk/crates/rmcp/src/model.rs:1837
  variant ClientResult:CustomResult in /tmp/.tmpnJNKwA/rust-sdk/crates/rmcp/src/model.rs:1846
  variant ServerResult:CustomResult in /tmp/.tmpnJNKwA/rust-sdk/crates/rmcp/src/model.rs:1884

--- failure enum_variant_missing: pub enum variant removed or renamed ---

Description:
A publicly-visible enum has at least one variant that is no longer available under its prior name. It may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.45.0/src/lints/enum_variant_missing.ron

Failed in:
  variant ClientNotification::CustomClientNotification, previously in file /tmp/.tmpBRbLyi/rmcp/src/model.rs:1783

--- failure function_missing: pub fn removed or renamed ---

Description:
A publicly-visible function cannot be imported by its prior path. A `pub use` may have been removed, or the function itself may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.45.0/src/lints/function_missing.ron

Failed in:
  function rmcp::handler::server::common::cached_schema_for_type, previously in file /tmp/.tmpBRbLyi/rmcp/src/handler/server/common.rs:30
  function rmcp::handler::server::tool::cached_schema_for_type, previously in file /tmp/.tmpBRbLyi/rmcp/src/handler/server/common.rs:30

--- failure method_parameter_count_changed: pub method parameter count changed ---

Description:
A publicly-visible method now takes a different number of parameters.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#fn-change-arity
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.45.0/src/lints/method_parameter_count_changed.ron

Failed in:
  rmcp::transport::auth::AuthorizationSession::new now takes 5 parameters instead of 4, in /tmp/.tmpnJNKwA/rust-sdk/crates/rmcp/src/transport/auth.rs:975
  rmcp::transport::AuthorizationSession::new now takes 5 parameters instead of 4, in /tmp/.tmpnJNKwA/rust-sdk/crates/rmcp/src/transport/auth.rs:975

--- failure struct_missing: pub struct removed or renamed ---

Description:
A publicly-visible struct cannot be imported by its prior path. A `pub use` may have been removed, or the struct itself may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.45.0/src/lints/struct_missing.ron

Failed in:
  struct rmcp::model::CustomClientNotification, previously in file /tmp/.tmpBRbLyi/rmcp/src/model.rs:636

Changelog

rmcp-macros

0.12.0 - 2025-12-18

Other

• merge cached_schema_for_type into schema_for_type (#581)
• Add NexusCore MCP to project list (#573)
• (deps) update darling requirement from 0.21 to 0.23 (#574)

rmcp

0.12.0 - 2025-12-18

Added

• add support for custom requests (#590)
• add support for custom server notifications (#580)

Fixed

• update process-wrap to v9.0 (#586)
• (oauth) rfc8414 should judement the response_types (#485)

Other

• Add SEP-991 (CIMD) support for URL-based client IDs (#570)
• merge cached_schema_for_type into schema_for_type (#581)
• Add NexusCore MCP to project list (#573)

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This PR was generated with release-plz.