chore: sync local updates

dev.sh

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+set -euo pipefail
+ROOT="$(cd "$(dirname "$0")" && pwd)"
+(cd "$ROOT/mengyaconnect-backend" && go run .) &
+BE_PID=$!
+trap 'kill $BE_PID 2>/dev/null' EXIT INT TERM
+cd "$ROOT/mengyaconnect-frontend"
+npm run dev