ci / test (pull_request) Successful in 2m30s
Why: Native#27 merged the MCP 2026-07-28 alignment; Squad#31 and Backend#88 carried the cascade; Dev pins and the increment record follow. Evidence: check-pins pins ok; WP3 chain CI green on every merge head; TestStdioSlowCancelThenEcho (acceptance 3) passes unchanged. Impact: MCP client negotiates versions and recognizes resultType. Refs: Agent-Native#27, Agent-Squad#31, Agent-System-Backend#88
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