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Neil
fd1dba9db9
* fix(daemon): validate spawn cwd asynchronously so one dead share cannot freeze every terminal createOrAttach validated the working directory synchronously on the daemon's only thread. Measured on Windows 11 + Ubuntu-24.04: existsSync on an unreachable UNC share 21,022 ms wsl.exe probe, cold distro 1,266 ms wsl.exe probe, warm distro 59 ms existsSync/statSync on healthy \\wsl.localhost 4 ms / 1 ms A single unreachable share therefore blocks the whole RPC loop past the client's 30s request ceiling, so every other terminal stalls behind it and reports `DaemonProtocolError: Request createOrAttach timed out after 30000ms`. The main process already validates asynchronously and passes prevalidatedCwd (ipc/pty.ts); the daemon never got the same treatment. Add validateWorkingDirectoryAsync (one stat, not exists-then-stat, so an unreachable share is not paid for twice) and await it from the daemon spawn preflights. spawnSubprocess now returns SubprocessHandle | Promise<...>, which existing sync stubs still satisfy. Deliberately not bounding the stat with a timeout: the 30s ceiling comes from blocking the shared loop, not from the duration. A timeout cannot tell "slow share" from "gone share", so it would fail spawns that succeed today at 3-8s on a cold VPN mount, and trade an accurate "working directory does not exist" for a guess. The new await opened a race: it sits between the "already exists?" check and the sessions.set that publishes the session, so two concurrent creates for one session id both spawned. Gate creation per session id; distinct ids still spawn in parallel. STA-4470 * fix(daemon): fence async spawn lifecycle