Vendor the command set the menu and shell depend on

bin/blob-audio-sink-set

@@ -0,0 +1,31 @@
+#!/bin/bash
+
+# blob:summary=Set the default audio output and move active streams
+# blob:args=<node-id> <sink-name>
+# blob:examples=blob audio output set default 42 alsa_output.pci-0000_00_1f.3.analog-stereo
+
+node_id=${1:-}
+sink_name=${2:-}
+
+if [[ -z $node_id || -z $sink_name ]]; then
+  echo "Usage: blob-audio-sink-set <node-id> <sink-name>" >&2
+  exit 1
+fi
+
+timeout 2 wpctl set-default "$node_id" 2>/dev/null || true
+timeout 2 pactl set-default-sink "$sink_name" 2>/dev/null || true
+
+# Move only real application streams. A DSP filter-chain's own output is also a
+# sink input but carries no application.name, and moving it would rewire the
+# processing itself -- onto headphones, or into its own virtual sink, which is a
+# cycle. EasyEffects' output stream must stay put for the same reason.
+timeout 2 pactl list sink-inputs 2>/dev/null | awk '
+  /^Sink Input #/ {id = substr($3, 2)}
+  /application\.name = / {
+    app = $0
+    sub(/.*application\.name = "/, "", app)
+    sub(/"$/, "", app)
+    if (app != "EasyEffects") print id
+  }' | while read -r input; do
+  [[ -n $input ]] && timeout 2 pactl move-sink-input "$input" "$sink_name" 2>/dev/null || true
+done