chore: release v3.0.0

[github-actions]

🤖 New release

• rmcp-macros: 2.2.0 -> 3.0.0
• rmcp: 2.2.0 -> 3.0.0

Changelog

rmcp-macros

3.0.0 - 2026-07-17

Added

• add modern client lifecycle modes (SEP-2575) (#995)
• [breaking] implement SEP-2549 cache hints (#889)
• [breaking] add MRTR behavior support (SEP-2322) (#929)
• relax outputSchema to accept non-object JSON Schema types (SEP-2106) (#895)
• [breaking] add MRTR model types (SEP-2322) (#915)

rmcp

3.0.0 - 2026-07-17

Added

• add modern client lifecycle modes (SEP-2575) (#995)
• (auth) accumulate client-side scopes during step-up authorization (#888)
• [breaking] add server discovery and negotiation (SEP-2575) (#973)
• (conformance) add SEP-2243 header validation tool (#997)
• [breaking] align metadata models with draft schema (#993)
• [breaking] implement SEP-2549 cache hints (#889)
• [breaking] add MRTR behavior support (SEP-2322) (#929)
• [breaking] type Annotations.lastModified as a string (#956)
• [breaking] add SEP-2243 HTTP standard headers (#907)
• relax outputSchema to accept non-object JSON Schema types (SEP-2106) (#895)
• [breaking] relax tool result structuredContent type (SEP-2106) (#933)
• [breaking] add MRTR model types (SEP-2322) (#915)

Fixed

• (auth) distinguish rejected refresh tokens from transient failures (#963)
• (auth) validate discovered metadata issuer (#996)
• bound streamable HTTP memory usage (#970)
• (streamable-http) preserve progress in JSON mode (#990)
• specify compatible sse-stream version (#968)
• flag schema derive on schemars feature (#966)

Other

• (deps) update hmac requirement from 0.12 to 0.13 (#988)
• serialize JavaScript dependency install (#972)

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