clipboard.writeText(location.href);
          isCopiedUrl.value = true

          setTimeout(() => {
            if (isCopiedUrl) {
              isCopiedUrl.value = false
            }
          }, 1000)
        }

        const mermaidErd = Vue.computed(() => {
          const lines = []
          lines.push('erDiagram')
          lines.push('    %% --------------------------------------------------------')
          lines.push('    %% Generated by "Rails Mermaid ERD"')
          lines.push('    %% https: