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thomasandClaude Opus 4.8
13608269b3
The persistent daemon (`tty7.exe --daemon`) is a detached background process
that outlives the GUI and is the running image of tty7.exe, so Windows locks
the file. An upgrade or uninstall then can't overwrite/remove the binary and
fails ("file in use" / reboot required) — the Restart Manager doesn't reliably
catch a no-window, DETACHED_PROCESS daemon in its own process group.
- spawn: extract the "stop the running daemon" half of `restart()` into a
reusable `stop()` (Shutdown -> await exit -> pid reap fallback -> clear
endpoint); `restart()` is now `stop()` + `ensure_running()`.
- main: add a `--stop-daemon` CLI entry that runs `stop()` and returns before
any GUI init, so it never opens a window.
- installer: in PrepareToInstall, extract the *new* tty7.exe to {tmp} and run
`--stop-daemon` (the new binary understands the flag; an old installed one
would launch the GUI instead), releasing the lock before file copy. Mirror it
in [UninstallRun]. Keep CloseApplications as a backstop but RestartApplications=no
(the GUI respawns the daemon on next start).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>