Multicall dispatch used std::env::current_exe(), which reads /proc/self/exe
and resolves symlinks. Every installed alias therefore reported the stem
"scythe", so scythe-daemon and vrec-daemon fell through to client mode and
opened the HUD instead of starting the engine. The aliases shipped by
install.sh, the deb/rpm/flatpak packages and the Hyprland exec_cmd line were
all affected; a stale pre-consolidation target/release/scythe-daemon masked
it during local testing.
invoked_stem() now reads argv[0] and only falls back to current_exe() when
argv[0] has no usable stem. Verified against a packaged tarball: both daemon
aliases hit the running-instance guard while scythe, scythe-ui, vrec and
vrec-ui open the client.
The e2e guard also probed liveness with `scythe --status`, which calls
ensure_daemon_running() and so spawned a daemon while probing, then chased
its own tail. It now connects to the socket directly, records the running
daemon's command line and working directory, stops it gracefully, and
restores it on exit so a developer's recorder survives a test run.
Help text now reports the unified binary and marks --gtk as a deprecated
alias, since the GTK backend was retired.
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