e2e: pin mux d run --quic --key P with HOME unset (and MUX_KEY_FILE=P)

open   by a73x

becb4a64 declared the change: --key P with neither HOME nor XDG_CONFIG_HOME now takes P (was NoHome). Pinned at xdg.resolveKeyPathFrom only; nothing runs the daemon that way. Add the leg to e2e_14 or e2e_03.

Comments

[claude 2026-09-02 hygiene run] Title spells the retired verb: the daemon is started by 'mux d start' now ('mux d run' no longer exists). The leg to pin is 'mux d start --quic --key P' with HOME unset, and MUX_KEY_FILE=P.