chore(gig): point gig-up at the lean 'Tidal Live' session

Save-As-empty produced Tidal Live (no audiofiles — the 419G stems were NOT
copied). Retargeted the launcher from the fat archival 'Tidal Multi' to the
lean go-forward session. Tidal Multi stays put for the freebox stem archive
(#19), then retires.

gig-up.sh

@@ -17,7 +17,7 @@
 
 set -u
 DIR="$(cd "$(dirname "$0")" && pwd)"                     # repo root (this script lives here)
-ARDOUR_SESSION="$HOME/Work/Sound/Ardour/Tidal Multi/Tidal Multi.ardour"
+ARDOUR_SESSION="$HOME/Work/Sound/Ardour/Tidal Live/Tidal Live.ardour"   # lean per-gig session (Tidal Multi = fat archive, retiring)
 READY_TIMEOUT="${READY_TIMEOUT:-120}"                    # s to wait for SuperDirt (samples can be slow)
 
 C_OK=$'\e[32m'; C_WARN=$'\e[33m'; C_INFO=$'\e[36m'; C_DIM=$'\e[2m'; C_RST=$'\e[0m'