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Hyu
bf3c96026b
The previous _TransferredStack approach broke anyio lexical context: websocket_client/ClientSession use anyio task groups whose cancel scope is bound to the frame that entered them. Deferring their aclose via a transferred exit stack left the underlying memory streams closed once initialize() returned, so the very next request (refresh -> list_tools) failed with Connection closed. New design: - Attach on the owner exit stack (same task as the serve loop, lexically intact) - A cold-starting process makes initialize() fail; signal _ColdStartRetry up to the outer retry loop, which reuses the live process without consuming retry budget - _lifecycle_loop_with_retry handles _ColdStartRetry like _TransportReconnect: preserves process, no fatal budget, backs off 2s and retries - Two new unit tests: cold-start raises _ColdStartRetry (not fatal) when process is alive; raises fatal error when process has actually exited Co-authored-by: dadachann <185672915+dadachann@users.noreply.github.com>