Launcher: bundled runtime, and take the port over from a prior instance

Start ProdDash.command now prefers ./runtime/bin/node (production machines
have no system Node) and kills whatever already holds :24500 before
starting — so relaunching from the GUI (which the LTC listener needs for
microphone permission) is one double-click, not a port-conflict hunt.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Start ProdDash.command

@@ -1,4 +1,11 @@
 #!/bin/zsh
 # Double-click to start ProdDash (macOS)
 cd "$(dirname "$0")"
+# One dashboard per machine: take the port over from any prior instance
+# (an SSH- or launchd-started one has no microphone access for the LTC
+# listener — launching from here fixes that).
+OLD=$(lsof -t -iTCP:24500 -sTCP:LISTEN 2>/dev/null)
+[[ -n "$OLD" ]] && kill $OLD 2>/dev/null && sleep 1
+# Prefer the bundled runtime (production machines have no system Node)
+if [[ -x ./runtime/bin/node ]]; then exec ./runtime/bin/node server.js; fi
 exec node server.js