Switch Blinko to bun for runtime and seed

Replace Node.js usage with bun across install and control scripts: run /opt/blinko/dist/seed.js with bun during install and update, and start the service with bun using --env-file. Also remove the hardcoded PORT from the generated .env. These changes unify the runtime, ensure migrations and seeding use bun, and load environment variables directly when starting the service.

ct/blinko.sh

@@ -53,6 +53,7 @@ function update_script() {
     mkdir -p /opt/blinko/server/public
     cp -r /opt/blinko/dist/public/. /opt/blinko/server/public/ 2>/dev/null || true
     $STD bunx prisma migrate deploy
+    $STD bun /opt/blinko/dist/seed.js
     msg_ok "Updated Application"
 
     msg_info "Starting Service"