完整的SEO审计工作流，带自动化HTML摘要

• •Google 账号和 Gmail API 凭证
• •可能需要目标 API 的认证凭证

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        "jsCode": "// Collect results for each URL\nconst output = [];\n\nfor (const item of items) {\n  const d = item.json;\n  const issues = [];\n  const suggestions = {};\n\n  function addIssue(code, message, suggestion) {\n    issues.push({ code, message });\n    suggestions[code] = suggestion;\n  }\n\n  // 1. Title length\n  if (!d.title) {\n    addIssue('missing_title', 'Missing <title>', 'Add a descriptive <title> (30–60 chars).');\n  } else if (d.title.length < 30) {\n    addIssue('short_title', `Title too short (${d.title.length} chars)`, 'Increase title length to ≥30 chars.');\n  } else if (d.title.length > 60) {\n    addIssue('long_title', `Title too long (${d.title.length} chars)`, 'Reduce title to ≤60 chars.');\n  }\n\n  // 2. Meta description\n  if (!d.metaDesc) {\n    addIssue('missing_meta_desc', 'Missing meta description', 'Add <meta name=\"description\"> (50–160 chars).');\n  } else if (d.metaDesc.length < 50) {\n    addIssue('short_meta_desc', `Meta description too short (${d.metaDesc.length} chars)`, 'Increase description to ≥50 chars.');\n  } else if (d.metaDesc.length > 160) {\n    addIssue('long_meta_desc', `Meta description too long (${d.metaDesc.length} chars)`, 'Shorten description to ≤160 chars.');\n  }\n\n  // 3. Robots, viewport, canonical, lang\n  if (!d.metaRobots) {\n    addIssue('missing_robots', 'Missing meta robots tag', 'Add <meta name=\"robots\" content=\"index,follow\">.');\n  }\n  if (!d.metaViewport || !d.metaViewport.includes('width=device-width')) {\n    addIssue('viewport', 'Missing/incorrect viewport tag', 'Add <meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">.');\n  }\n  if (!d.linkCanonical) {\n    addIssue('canonical', 'Missing canonical', 'Add <link rel=\"canonical\" href=\"YOUR_URL\">.');\n  }\n  if (!d.htmlLang) {\n    addIssue('lang', 'Missing lang attribute', 'Add <html lang=\"en\">.');\n  }\n\n  // 4. Word count\n  if (typeof d.wordCount === 'number' && d.wordCount < 300) {\n    addIssue('low_word_count', `Low word count (${d.wordCount} words)`, 'Aim for ≥300 words.');\n  }\n\n  // 5. Headings\n  const h1 = (d.h1Tags || []).length;\n  const h2 = (d.h2Tags || []).length;\n  const h3 = (d.h3Tags || []).length;\n  if (h1 !== 1) {\n    addIssue('h1', `${h1} <h1> tags`, 'Use exactly one <h1>.');\n  }\n  if (h2 === 0) {\n    addIssue('h2', 'No <h2> tags', 'Add ≥1 <h2> for sections.');\n  }\n  if (h3 === 0) {\n    addIssue('h3', 'No <h3> tags', 'Use <h3> for subsections.');\n  }\n\n  // 6. Images alt text\n  if (Array.isArray(d.imgAlts)) {\n    const missing = d.imgAlts.filter(a => !a || !a.trim()).length;\n    if (missing) {\n      addIssue('img_alt', `${missing} images missing alt`, 'Provide descriptive alt text.');\n    }\n  }\n\n  // 7. Broken links\n  if (Array.isArray(d.links)) {\n    const broken = d.links.filter(l => l.status >= 400).length;\n    if (broken) {\n      addIssue('broken_links', `${broken} broken links`, 'Fix or remove broken URLs.');\n    }\n  }\n\n  // 8. Structured data\n  if (!d.structuredData || d.structuredData.length === 0) {\n    addIssue('schema', 'No structured data', 'Implement JSON-LD schema markup.');\n  }\n\n  // 9. Core Web Vitals\n  if (d.metrics) {\n    const { LCP, INP, CLS } = d.metrics;\n    if (LCP > 2500) {\n      addIssue('lcp', `LCP too slow (${LCP} ms)`, 'Optimize images and server response.');\n    }\n    if (INP > 200) {\n      addIssue('inp', `INP high (${INP} ms)`, 'Minimize JavaScript execution.');\n    }\n    if (CLS > 0.1) {\n      addIssue('cls', `CLS unstable (${CLS})`, 'Set image dimensions and pre-load fonts.');\n    }\n  }\n\n  // Summary\n  const pass = issues.length === 0;\n  const summary = pass ? 'All checks passed! 🎉' : `${issues.length} issue${issues.length > 1 ? 's' : ''} detected`;\n\n  // Markdown report\n  let markdown = `## SEO Audit for ${d.siteUrl || d.url}\\n`;\n  markdown += `**Status:** ${pass ? 'PASS ✅' : 'FAIL ❌'}\\n`;\n  markdown += `**Summary:** ${summary}\\n`;\n  if (!pass) {\n    markdown += `\\n### Issues & Suggestions\\n`;\n    issues.forEach(({ code, message }) => {\n      markdown += `- **${message}**  \\n  _Suggestion:_ ${suggestions[code]}\\n`;\n    });\n  }\n\n  output.push({\n    json: {\n      siteUrl: d.siteUrl || d.url,\n      pass,\n      summary,\n      issues,\n      suggestions,\n      markdownReport: markdown,\n    },\n  });\n}\n\nreturn output;\n"
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'status-pass' : 'status-fail' }}\">\n      {{ $node[\"Run SEO Audit Logic\"].json.pass ? 'PASS ✅' : 'FAIL ❌' }}\n    </span>\n  </p>\n\n  <div class=\"priorities\">\n    <strong>🚩 Top 3 Priorities:</strong>\n    <ol>\n      {{\n        $node[\"Run SEO Audit Logic\"].json.issues\n          .slice(0, 3)\n          .map(i => `<li>${i.message.replace(/</g,'&lt;').replace(/>/g,'&gt;')}</li>`)\n          .join('')\n      }}\n    </ol>\n  </div>\n\n  <table class=\"summary-table\">\n    <tr>\n      <td><strong>Total Issues</strong></td>\n      <td>{{ $node[\"Run SEO Audit Logic\"].json.issues.length }}</td>\n    </tr>\n    <tr>\n      <td><strong>Broken Links</strong></td>\n      <td>\n        {{\n          $node[\"Run SEO Audit Logic\"].json.issues.filter(i => i.code === 'broken_links').length\n        }}\n      </td>\n    </tr>\n    <tr>\n      <td><strong>CWV Alerts</strong></td>\n      <td>\n        {{\n          $node[\"Run SEO Audit Logic\"].json.issues\n            .filter(i => ['lcp','inp','cls'].includes(i.code))\n            .length\n        }}\n      </td>\n    </tr>\n  </table>\n\n  <div class=\"issues-container\">\n    <!-- On‑Page Issues -->\n    <div class=\"column\">\n      <h4>📝 On‑Page Issues</h4>\n      <ul class=\"issues-list\">\n        {{\n          $node[\"Run SEO Audit Logic\"].json.issues\n            .filter(i => [\n              'missing_title','short_title','long_title',\n              'missing_meta_desc','short_meta_desc','long_meta_desc',\n              'h1','h2','h3','img_alt','schema'\n            ].includes(i.code))\n            .map(i => {\n              const msg = i.message.replace(/</g,'&lt;').replace(/>/g,'&gt;');\n              const sug = $node[\"Run SEO Audit Logic\"].json.suggestions[i.code]\n                            .replace(/</g,'&lt;').replace(/>/g,'&gt;');\n              return `\n                <li>\n                  ⚠️ <strong>${msg}</strong>\n                  <span class=\"suggestion\">\n                    Suggestion: <code>${sug}</code>\n                  </span>\n                </li>`;\n            })\n            .join('')\n        }}\n      </ul>\n    </div>\n\n    <!-- Technical Issues -->\n    <div class=\"column\">\n      <h4>🔧 Technical Issues</h4>\n      <ul class=\"issues-list\">\n        {{\n          $node[\"Run SEO Audit Logic\"].json.issues\n            .filter(i => ![\n              'missing_title','short_title','long_title',\n              'missing_meta_desc','short_meta_desc','long_meta_desc',\n              'h1','h2','h3','img_alt','schema'\n            ].includes(i.code))\n            .map(i => {\n              const msg = i.message.replace(/</g,'&lt;').replace(/>/g,'&gt;');\n              const sug = $node[\"Run SEO Audit Logic\"].json.suggestions[i.code]\n                            .replace(/</g,'&lt;').replace(/>/g,'&gt;');\n              return `\n                <li>\n                  ⚙️ <strong>${msg}</strong>\n                  <span class=\"suggestion\">\n                    Suggestion: <code>${sug}</code>\n                  </span>\n                </li>`;\n            })\n            .join('')\n        }}\n      </ul>\n    </div>\n  </div>\n\n  <div class=\"next-steps\">\n    <p><strong>Next Steps:</strong></p>\n    <ol>\n      <li>Review the above suggestions and assign tickets in your tracker.</li>\n      <li>Re‑run this audit after fixes are deployed to confirm all PASS.</li>\n    </ol>\n  </div>\n\n</body>\n</html>\n",
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