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fix: self-describing error for requests before session initialization (was generic -32602) - #3128

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MrSampson wants to merge 4 commits into
modelcontextprotocol:v1.xfrom
MrSampson:upstream-session-not-initialized-error-v1x

fix: return a self-describing 404 for an unknown streamable-http sess…

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cubic-dev-ai / cubic · AI code reviewer succeeded Aug 19, 2026 in 4m 44s

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AI review completed with 1 review. 0 issues found across 2 files (changes from recent commits).