diff --git a/packages/adapter-wordpress/package.json b/packages/adapter-wordpress/package.json
index 3adf55a..0df0253 100644
--- a/packages/adapter-wordpress/package.json
+++ b/packages/adapter-wordpress/package.json
@@ -18,6 +18,10 @@
   },
   "dependencies": {
     "@sf/contracts": "workspace:*",
+    "sanitize-html": "^2",
     "saxes": "^6.0.0"
+  },
+  "devDependencies": {
+    "@types/sanitize-html": "^2.16.2"
   }
 }
diff --git a/packages/adapter-wordpress/src/index.ts b/packages/adapter-wordpress/src/index.ts
index 45d666b..cb02e08 100644
--- a/packages/adapter-wordpress/src/index.ts
+++ b/packages/adapter-wordpress/src/index.ts
@@ -2,3 +2,4 @@ export * from './limits.js'
 export * from './parse/php-unserialize.js'
 export * from './parse/wxr-stream.js'
 export * from './map/item-to-row.js'
+export * from './sanitize/html.js'
diff --git a/packages/adapter-wordpress/src/sanitize/html.ts b/packages/adapter-wordpress/src/sanitize/html.ts
new file mode 100644
index 0000000..f35c4d3
--- /dev/null
+++ b/packages/adapter-wordpress/src/sanitize/html.ts
@@ -0,0 +1,263 @@
+// WordPress 正文 HTML 白名单清洗（Plan 2 Task 5，ADR-009）：清洗本体交 sanitize-html
+// （锁 ^2，MIT），本模块只做两件事——集中导出白名单配置 {@link SANITIZE_CONFIG}，
+// 与"清洗 + 差异收集"纯函数 {@link sanitizeBodyHtml}。原文永远保留在 Source Snapshot
+// 是调用方的职责（ADR-009），本模块不碰存储；白名单升级后可对原文重跑本函数。
+//
+// 差异收集方案取舍（选定 onOpenTag 观察钩子，JSDoc 钉死）：
+// - sanitize-html 无原生"移除回调"。候选方案：
+//   a) onOpenTag(name, attribs)——官方类型支持的观察钩子，对**每个**开标签事件触发
+//      （含未批准标签），携带**未过滤**的原始属性表；纯观察、零输出影响（测试钉死
+//      与无仪表化运行的字节等价）。
+//   b) transformTags——同样先于白名单判定触发，但具变换语义（须原样回显
+//      {tagName, attribs}），仪表化借道变换机制过重。
+//   c) exclusiveFilter——只见"存活"元素（关闭时回调、属性已过滤），看不到移除。
+//   d) before/after 字符串对比——等价变形（属性重排序/自闭合规范化/实体转义）
+//      制造假差异，不可靠。
+//   e) 正则预扫描——非 tokenizer 精度（注释/引号内 '>'/大小式变形），仅可作为
+//      下策。onOpenTag 复用 sanitize-html 自身解析器（htmlparser2）的事件流，
+//      精度与清洗本体同源，故选 a。
+// - 镜像逻辑（判断"什么会被拒"）从 SANITIZE_CONFIG 单源推导，不另立策略表：
+//   标签 ∈ allowedTags？属性 ∈ allowedAttributes[tag] ∪ allowedAttributes['*']？
+//   URL 属性（allowedSchemesAppliedToAttributes）协议 ∈ allowedSchemes
+//   （含 allowedSchemesByTag 覆盖与协议相对 URL 规则，语义镜像 launder.naughtyHref）。
+// - 不镜像的清洗路径（ exotic，报告中不体现；清洗本体不受影响）：
+//   属性名合法性校验、空值非布尔属性删除、meta refresh content、SVG animate 名单、
+//   allowedClasses 过滤、srcset 部分候选重写（仅"全部候选被拒→整属性删除"记账，
+//   候选切分为近似逗号分割）、空 srcset 删除。
+// - 记账粒度：按**白名单拒绝的开标签事件**逐次记录（文档序；属性按声明序）——
+//   不按"最终 DOM 差异"去重：discard 剥壳语义下未批准容器的子内容会被解包保留，
+//   其属性过滤真实发生，同样值得留痕；宁多报不漏报（审计定位用途）。
+//   顺序确定 → 同输入必得同 diffs（纯函数，无共享状态，测试钉死）。
+//
+// 白名单范围决策（冻结；改动须评审，测试钉死值域）：
+// - h1 不入白名单：标题层级归主题层（文章标题由主题渲染 h1），正文从 h2 起；
+//   出现 h1 会进 diff（removed-tag），文本按 discard 语义保留。
+// - 布局语义标签（section/article/header/footer/nav/aside/main）不入白名单：
+//   discard 剥壳保留子内容，布局由阶段 3 主题层重建，不透传源站布局。
+// - script/style/iframe/form/svg/math 等一律拒绝；iframe 无宿主白名单通道——
+//   "allowIframe: false"的等价物就是 allowedTags 缺席（本库无此独立开关）。
+// - style 属性与 <style> 标签均拒绝（ADR-009：内联样式是风险面，清洗后进产出的
+//   内容不得携带 CSS；未来若放开须走 allowedStyles 显式子集评审）。
+// - class/id 透传：WP 对齐类（alignleft 等）与锚点依赖之；class 值是惰性文本，
+//   安全边界在标签/属性白名单，不 class 名单（阶段 3 主题自行取舍是否消费）。
+// - **追踪像素策略（本切片钉死）**：外链 <img>（含 1x1 追踪像素形态）一律保留——
+//   移除判定只看白名单（script/事件属性/危险协议/未批准标签），不按尺寸/域名猜测
+//   意图。外链资源清单属 Task 6 的"远程依赖报告"范畴，路径重写（含媒体本地化）属
+//   阶段 3；本模块不越权。
+
+import sanitizeHtml, { type Attributes, type IOptions } from 'sanitize-html'
+
+/** 单条清洗差异：一次被白名单拒绝的标签/属性出现（审计与报告的最小记账单元） */
+export interface SanitizeDiff {
+  /** 'removed-tag'：标签未批准（属性不重复记账）；'removed-attr'：标签保留但属性被拒 */
+  type: 'removed-tag' | 'removed-attr'
+  /** 小写标签名（htmlparser2 归一） */
+  tag: string
+  /** 仅 'removed-attr'：被拒属性名（小写）。'removed-tag' 时无此键 */
+  attr?: string
+  /** 被移除内容的重构摘要：removed-tag=开标签重构 `<tag a="v">`；removed-attr=属性序列化 `a="v"`；控制字符已转义，截前 80 字符 */
+  excerpt: string
+}
+
+/** sanitizeBodyHtml 返回：清洗后 HTML + 差异清单（文档序） */
+export interface SanitizeResult {
+  html: string
+  diffs: SanitizeDiff[]
+}
+
+/**
+ * 白名单清洗配置（集中导出，后续阶段可复用于 preview CSP 对齐；冻结浅层）。
+ * 镜像判定（diff 收集）与清洗本体共用本配置——单源，改这里两边同步。
+ * allowedSchemesAppliedToAttributes 显式钉死 ['href','src','cite']（本白名单内
+ * 仅这三类 URL 属性；显式化使镜像判定不依赖库默认值）。
+ */
+export const SANITIZE_CONFIG: Readonly<IOptions> = Object.freeze({
+  // 编辑性内容标签（WP 正文实况：块编辑器的 figure/div/span、表格、列表、引用、
+  // 代码、详情折叠等）；h1/布局标签/style/iframe 的排除理由见模块头
+  allowedTags: [
+    'a', 'abbr', 'b', 'blockquote', 'br', 'caption', 'cite', 'code', 'col', 'colgroup',
+    'dd', 'del', 'details', 'div', 'dl', 'dt', 'em', 'figcaption', 'figure', 'h2',
+    'h3', 'h4', 'h5', 'h6', 'hr', 'i', 'img', 'ins', 'kbd', 'li',
+    'mark', 'ol', 'p', 'pre', 'q', 's', 'samp', 'small', 'span', 'strong',
+    'sub', 'summary', 'sup', 'table', 'tbody', 'td', 'tfoot', 'th', 'thead', 'time',
+    'tr', 'u', 'ul', 'var',
+  ],
+  allowedAttributes: {
+    '*': ['class', 'dir', 'id', 'lang', 'title'],
+    a: ['href', 'name', 'rel', 'target'],
+    img: ['alt', 'decoding', 'height', 'loading', 'sizes', 'src', 'srcset', 'width'],
+    blockquote: ['cite'],
+    col: ['span'],
+    colgroup: ['span'],
+    del: ['cite', 'datetime'],
+    ins: ['cite', 'datetime'],
+    li: ['value'],
+    ol: ['reversed', 'start', 'type'],
+    q: ['cite'],
+    td: ['colspan', 'headers', 'rowspan', 'scope'],
+    th: ['abbr', 'colspan', 'headers', 'rowspan', 'scope'],
+    time: ['datetime'],
+    details: ['open'],
+  },
+  // 协议白名单：常规 Web + 联系方式（mailto/tel，WP 站点 CTA 常见）；
+  // data:/javascript:/vbscript: 等一律拒绝（data: 图片走私亦拒绝，进 diff）
+  allowedSchemes: ['http', 'https', 'mailto', 'tel'],
+  // 协议相对 URL（//cdn.example/x）放行：WP 混合协议遗留常见，浏览器按页面协议解析
+  allowProtocolRelative: true,
+  // URL 属性名单见 JSDoc；其余配置走库默认（discard 剥壳、nonTextTags 连内容删）
+  allowedSchemesAppliedToAttributes: ['href', 'src', 'cite'],
+})
+
+/** excerpt 上限（字符）：审计摘要够定位即可，控制报告体积 */
+const EXCERPT_MAX = 80
+
+// ---- 镜像判定的派生索引（SANITIZE_CONFIG 冻结 → 模块级一次派生，纯常量视图）----
+
+// allowedTags 的 false 形态（全拒绝）语义上等于空集——镜像统一为空 Set
+const TAGS_CFG = SANITIZE_CONFIG.allowedTags
+const ALLOWED_TAGS: ReadonlySet<string> = new Set(
+  TAGS_CFG === false || TAGS_CFG === undefined ? [] : TAGS_CFG,
+)
+
+const ALLOWED_ATTRS = new Map<string, ReadonlySet<string>>()
+{
+  const configured = SANITIZE_CONFIG.allowedAttributes
+  if (configured !== false && configured !== undefined) {
+    for (const [tag, attrs] of Object.entries(configured)) {
+      // AllowedAttribute 允许 {name, values} 受限值形态；本配置只用字符串形态，
+      // 镜像只认字符串（受限值形态若未来启用，须同步扩展此处）
+      ALLOWED_ATTRS.set(
+        tag,
+        new Set(attrs.filter((a): a is string => typeof a === 'string')),
+      )
+    }
+  }
+}
+
+const EMPTY_ATTRS: ReadonlySet<string> = new Set()
+
+const SCHEME_ATTRS: ReadonlySet<string> = new Set(
+  SANITIZE_CONFIG.allowedSchemesAppliedToAttributes ?? ['href', 'src', 'cite'],
+)
+
+// 协议表归一小写（launder 以小写比较 scheme；配置值大小写不敏感）。
+// boolean 形态（false=不过滤）不参与镜像——本配置为 string[]，测试钉死
+const SCHEMES_CFG = SANITIZE_CONFIG.allowedSchemes
+const ALLOWED_SCHEMES: readonly string[] | undefined = Array.isArray(SCHEMES_CFG)
+  ? SCHEMES_CFG.map((s: string) => s.toLowerCase())
+  : undefined
+
+const SCHEMES_BY_TAG = new Map<string, readonly string[]>()
+{
+  const byTag = SANITIZE_CONFIG.allowedSchemesByTag
+  if (byTag !== false && byTag !== undefined) {
+    for (const [tag, schemes] of Object.entries(byTag)) {
+      SCHEMES_BY_TAG.set(tag, schemes.map((s: string) => s.toLowerCase()))
+    }
+  }
+}
+
+const ALLOW_PROTOCOL_RELATIVE = SANITIZE_CONFIG.allowProtocolRelative ?? true
+
+/**
+ * launder.naughtyHref 的语义镜像（sanitize-html 2.18 经 launder 判定 URL 属性）：
+ * 清理（剥 \x00-\x20 与 HTML 注释——浏览器忽略它们，常用于走私 scheme）后取
+ * scheme 前缀；无 scheme 时仅协议相对 URL 受 allowProtocolRelative 约束。
+ * 镜像而非复用（launder 未导出公开契约）：若库升级判定变化，测试对照
+ * （仪表化等价测试 + 协议用例）会暴露漂移。
+ */
+function isNaughtyUrl(rawUrl: string, allowedSchemes: readonly string[]): boolean {
+  // 浏览器会忽略 URL 中的控制字符（\x00-\x20，常见 scheme 走私手法，见 OWASP
+  // XSS Filter Evasion Cheat Sheet#Embedded tab）——控制字符正是本清洗的目标，豁免
+  // eslint-disable-next-line no-control-regex
+  let href = rawUrl.replace(/[\x00-\x20]+/g, '')
+  for (;;) {
+    const start = href.indexOf('<!--')
+    if (start === -1) break
+    const end = href.indexOf('-->', start + 4)
+    if (end === -1) break
+    href = href.slice(0, start) + href.slice(end + 3)
+  }
+  const scheme = href.match(/^([a-zA-Z][a-zA-Z0-9.\-+]*):/)?.[1]
+  if (scheme === undefined) {
+    if (/^[/\\]{2}/.test(href)) return !ALLOW_PROTOCOL_RELATIVE
+    return false
+  }
+  return !allowedSchemes.includes(scheme.toLowerCase())
+}
+
+function schemesFor(tag: string): readonly string[] {
+  return SCHEMES_BY_TAG.get(tag) ?? ALLOWED_SCHEMES ?? []
+}
+
+/** 控制字符（C0 + DEL）→ \uXXXX 转义文本（摘要在 JSON/日志里可见可 grep） */
+function escapeControlChars(text: string): string {
+  // 转义控制字符是本函数职责本身，豁免（同上：字符类里写控制字符是有意为之）
+  // eslint-disable-next-line no-control-regex
+  return text.replace(/[\x00-\x1f\x7f]/g, (ch) => `\\u${ch.charCodeAt(0).toString(16).padStart(4, '0')}`)
+}
+
+function makeExcerpt(raw: string): string {
+  return escapeControlChars(raw).slice(0, EXCERPT_MAX)
+}
+
+/** 开标签重构（属性原值经 JSON.stringify 序列化——引号/反斜杠/控制字符一并转义） */
+function openingTagMarkup(tag: string, attribs: Attributes): string {
+  let markup = `<${tag}`
+  for (const [name, value] of Object.entries(attribs)) {
+    markup += ` ${name}=${JSON.stringify(value)}`
+  }
+  return `${markup}>`
+}
+
+/**
+ * 单个开标签事件的拒绝记账（onOpenTag 回调体）：
+ * 标签被拒 → 只记 removed-tag（其属性随标签消失，不重复记账）；
+ * 标签放行 → 逐属性记（未批准 / URL 协议被拒 / srcset 全候选被拒）。
+ */
+function recordRejections(diffs: SanitizeDiff[], tag: string, attribs: Attributes): void {
+  if (!ALLOWED_TAGS.has(tag)) {
+    diffs.push({ type: 'removed-tag', tag, excerpt: makeExcerpt(openingTagMarkup(tag, attribs)) })
+    return
+  }
+  const tagAttrs = ALLOWED_ATTRS.get(tag) ?? EMPTY_ATTRS
+  const starAttrs = ALLOWED_ATTRS.get('*') ?? EMPTY_ATTRS
+  const schemes = schemesFor(tag)
+  for (const [attr, value] of Object.entries(attribs)) {
+    const excerpt = makeExcerpt(`${attr}=${JSON.stringify(value)}`)
+    if (!tagAttrs.has(attr) && !starAttrs.has(attr)) {
+      diffs.push({ type: 'removed-attr', tag, attr, excerpt })
+      continue
+    }
+    if (SCHEME_ATTRS.has(attr) && isNaughtyUrl(value, schemes)) {
+      diffs.push({ type: 'removed-attr', tag, attr, excerpt })
+      continue
+    }
+    // srcset/imagesrcset 逐候选协议过滤的镜像：全部候选被拒时库会整属性删除（近似
+    // 逗号切分，仅 diff 判定用）；部分被拒仅重写不删除，不记账
+    if (attr === 'srcset' || attr === 'imagesrcset') {
+      const candidates = value.split(',').map((part) => part.trim().split(/\s+/)[0] ?? '')
+      if (candidates.length > 0 && candidates.every((url) => url !== '' && isNaughtyUrl(url, schemes))) {
+        diffs.push({ type: 'removed-attr', tag, attr, excerpt })
+      }
+    }
+  }
+}
+
+/**
+ * WordPress 正文 HTML 白名单清洗（纯函数）：清洗本体 = sanitize-html + SANITIZE_CONFIG；
+ * 差异 = onOpenTag 观察钩子按文档序收集（方案取舍与记账粒度见模块头）。
+ * 同输入必得同输出与同 diffs；每调用独立 diffs 数组，调用方持有即可安全归档。
+ */
+export function sanitizeBodyHtml(html: string): SanitizeResult {
+  const diffs: SanitizeDiff[] = []
+  // 展开副本承载仅本次调用的仪表化钩子（SANITIZE_CONFIG 冻结，库的默认值归一
+  // 写入副本，不触碰导出常量）；onOpenTag 为纯观察——输出与无钩子运行字节一致（测试钉死）
+  const cleaned = sanitizeHtml(html, {
+    ...SANITIZE_CONFIG,
+    onOpenTag: (name, attribs) => {
+      recordRejections(diffs, name, attribs)
+    },
+  })
+  return { html: cleaned, diffs }
+}
diff --git a/packages/adapter-wordpress/test/html-sanitize.test.ts b/packages/adapter-wordpress/test/html-sanitize.test.ts
new file mode 100644
index 0000000..52f8981
--- /dev/null
+++ b/packages/adapter-wordpress/test/html-sanitize.test.ts
@@ -0,0 +1,232 @@
+// Task 5 失败测试（先于实现）：WordPress 正文 HTML 白名单清洗 + SanitizeDiff[] 差异收集。
+// 方案取舍（实现侧 JSDoc 为准）：清洗本体交 sanitize-html；差异经 onOpenTag 观察钩子
+// 按文档序收集（每次调用独立数组，纯函数）。
+import { createReadStream } from 'node:fs'
+import { fileURLToPath } from 'node:url'
+import { describe, expect, it } from 'vitest'
+import sanitizeHtml from 'sanitize-html'
+import { parseWxrStream } from '../src/parse/wxr-stream.js'
+import { SANITIZE_CONFIG, sanitizeBodyHtml, type SanitizeDiff } from '../src/sanitize/html.js'
+
+const FIXTURE = fileURLToPath(new URL('../../../tests/fixtures/wxr/mini.xml', import.meta.url))
+
+/** mini.xml post 101 的 content:encoded 原文（item-to-row 测试同款锚点） */
+const MINI_101_BODY =
+  '<p>Body with <a href="/products/fixture-product/">link</a> and <img src="https://fixture.example/wp-content/uploads/2026/10/fixture-a.png"/></p>'
+
+describe('sanitizeBodyHtml：危险内容移除（差异留痕）', () => {
+  it('<script> 标签与内容整体移除 + removed-tag diff（excerpt 含开标签）', () => {
+    const result = sanitizeBodyHtml('<p>ok</p><script>alert(1)</script>')
+    expect(result.html).toBe('<p>ok</p>') // script 内文随 nonTextTags 语义一并丢弃
+    expect(result.diffs).toStrictEqual([{ type: 'removed-tag', tag: 'script', excerpt: '<script>' }])
+  })
+
+  it('<style> 内联样式标签与内容移除 + removed-tag diff（ADR-009：内联样式不入产出）', () => {
+    const result = sanitizeBodyHtml('<style>p { color: red; }</style><p>s</p>')
+    expect(result.html).toBe('<p>s</p>')
+    expect(result.diffs).toStrictEqual([{ type: 'removed-tag', tag: 'style', excerpt: '<style>' }])
+  })
+
+  it('事件属性 onclick 移除 + removed-attr diff（excerpt 为属性序列化）', () => {
+    const result = sanitizeBodyHtml('<p onclick="steal()">text</p>')
+    expect(result.html).toBe('<p>text</p>')
+    expect(result.diffs).toStrictEqual([
+      { type: 'removed-attr', tag: 'p', attr: 'onclick', excerpt: 'onclick="steal()"' },
+    ])
+  })
+
+  it('危险协议：javascript: href 与 data: img src 均移除属性 + removed-attr diff', () => {
+    const js = sanitizeBodyHtml('<a href="javascript:alert(1)">x</a>')
+    expect(js.html).toBe('<a>x</a>') // 属性被整体删除，标签保留
+    expect(js.diffs).toStrictEqual([
+      { type: 'removed-attr', tag: 'a', attr: 'href', excerpt: 'href="javascript:alert(1)"' },
+    ])
+    const data = sanitizeBodyHtml('<img src="data:image/png;base64,AAAA" alt="d" />')
+    expect(data.html).toBe('<img alt="d" />')
+    expect(data.diffs).toStrictEqual([
+      {
+        type: 'removed-attr',
+        tag: 'img',
+        attr: 'src',
+        excerpt: 'src="data:image/png;base64,AAAA"',
+      },
+    ])
+  })
+
+  it('未批准 iframe：标签移除 + removed-tag diff（allowIframe:false 等价物 = 白名单缺席）', () => {
+    const result = sanitizeBodyHtml('<iframe src="https://evil.example/embed" width="600">fb</iframe>tail')
+    // discard 语义：剥壳保留内文（iframe 后备文本）
+    expect(result.html).toBe('fbtail')
+    expect(result.diffs).toStrictEqual([
+      {
+        type: 'removed-tag',
+        tag: 'iframe',
+        excerpt: '<iframe src="https://evil.example/embed" width="600">',
+      },
+    ])
+  })
+
+  it('多重违例全部记录且顺序稳定（文档序：标签按出现、属性按声明）', () => {
+    const dirty =
+      '<p onclick="a()">t1</p><script>evil()</script><a href="javascript:x">t2</a><iframe src="https://e.example/f">fb</iframe><img src="https://ok.example/p.png" onerror="y()" alt="ok">'
+    const result = sanitizeBodyHtml(dirty)
+    expect(result.html).toBe('<p>t1</p><a>t2</a>fb<img src="https://ok.example/p.png" alt="ok" />')
+    expect(result.diffs).toStrictEqual([
+      { type: 'removed-attr', tag: 'p', attr: 'onclick', excerpt: 'onclick="a()"' },
+      { type: 'removed-tag', tag: 'script', excerpt: '<script>' },
+      { type: 'removed-attr', tag: 'a', attr: 'href', excerpt: 'href="javascript:x"' },
+      { type: 'removed-tag', tag: 'iframe', excerpt: '<iframe src="https://e.example/f">' },
+      { type: 'removed-attr', tag: 'img', attr: 'onerror', excerpt: 'onerror="y()"' },
+    ] satisfies SanitizeDiff[])
+  })
+})
+
+describe('sanitizeBodyHtml：白名单原样保留', () => {
+  it('任务清单全标签结构字节级保留（含 srcset img / 表格 / figure / pre:code），零 diff', () => {
+    const doc =
+      '<h2 id="intro">H2</h2><h3>H3</h3><h4>H4</h4><h5>H5</h5><h6>H6</h6>' +
+      '<p class="lead">Para with <strong>bold</strong>, <em>em</em>, ' +
+      '<a href="/products/fixture-product/" target="_blank" rel="noopener">link</a> and ' +
+      '<a href="mailto:sales@example.com">mail</a>.</p>' +
+      '<ul><li>one</li><li>two</li></ul><ol start="3"><li>three</li></ol>' +
+      '<figure class="wp-block-image"><img src="https://fixture.example/wp-content/uploads/2026/10/fixture-a.png" srcset="https://fixture.example/wp-content/uploads/2026/10/fixture-a.png 1x, https://fixture.example/wp-content/uploads/2026/10/fixture-a@2x.png 2x" sizes="(max-width: 600px) 100vw, 600px" alt="Fixture A" width="600" height="400" loading="lazy" decoding="async" /><figcaption>Caption</figcaption></figure>' +
+      '<blockquote cite="https://example.com/source"><p>Quote</p></blockquote><pre><code>x = 1</code></pre>' +
+      '<table><colgroup><col /></colgroup><thead><tr><th scope="col">A</th></tr></thead>' +
+      '<tbody><tr><td colspan="2">1</td></tr></tbody><tfoot><tr><td>f</td></tr></tfoot></table>' +
+      '<div class="wp-group"><span class="note">span</span><br /><hr /><b>b</b><i>i</i><u>u</u><s>s</s><del>d</del><ins>n</ins><sub>1</sub><sup>2</sup><small>sm</small><mark>m</mark><abbr title="X">ab</abbr><cite>c</cite><q>q</q><time datetime="2026-10-05">t</time><kbd>k</kbd><samp>s</samp><var>v</var><dl><dt>t</dt><dd>d</dd></dl><details open><summary>s</summary>body</details></div>'
+    const result = sanitizeBodyHtml(doc)
+    expect(result.diffs).toStrictEqual([])
+    expect(result.html).toBe(doc)
+  })
+
+  it('URL 形态：相对路径 / 协议相对 / tel 全部原样保留，零 diff', () => {
+    const doc =
+      '<p><a href="/about/">rel</a> <a href="//cdn.example.com/x">proto-rel</a> <a href="tel:+861200000000">tel</a></p>'
+    const result = sanitizeBodyHtml(doc)
+    expect(result.html).toBe(doc)
+    expect(result.diffs).toStrictEqual([])
+  })
+})
+
+describe('sanitizeBodyHtml：mini.xml 端到端（parseWxrStream → sanitizeBodyHtml）', () => {
+  it('post(101) contentEncoded：内链 href 与外链图 URL 原样、零 diff（img 规范形补空格自闭合）', async () => {
+    const items = []
+    for await (const ev of parseWxrStream(createReadStream(FIXTURE))) {
+      if (ev.kind === 'item' && ev.item.postId === 101) items.push(ev.item)
+    }
+    expect(items).toHaveLength(1)
+    expect(items[0]?.contentEncoded).toBe(MINI_101_BODY) // 输入锚点：原文透传
+    const result = sanitizeBodyHtml(items[0]?.contentEncoded ?? '')
+    expect(result.diffs).toStrictEqual([])
+    // URL 原样保留（内链路径 + 外链图片完整 URL），仅 img 自闭合规范化为 " />"
+    expect(result.html).toBe(
+      '<p>Body with <a href="/products/fixture-product/">link</a> and <img src="https://fixture.example/wp-content/uploads/2026/10/fixture-a.png" /></p>',
+    )
+    expect(result.html).toContain('href="/products/fixture-product/"')
+    expect(result.html).toContain('src="https://fixture.example/wp-content/uploads/2026/10/fixture-a.png"')
+  })
+})
+
+describe('sanitizeBodyHtml：差异收集机制', () => {
+  it('纯函数：同输入两次清洗，html 与 diffs 全等（无共享状态）', () => {
+    const dirty =
+      '<div onclick="go()"><a href="javascript:x">in</a></div><script>s()</script><iframe src="https://e.example/i"></iframe>'
+    const first = sanitizeBodyHtml(dirty)
+    const second = sanitizeBodyHtml(dirty)
+    expect(second).toStrictEqual(first)
+    expect(first.diffs).toHaveLength(4) // div.onclick / a.href / script / iframe
+  })
+
+  it('大小写归一：<SCRIPT>/<A HREF> 以小写 tag/attr 记 diff', () => {
+    const result = sanitizeBodyHtml('<SCRIPT>x</SCRIPT><A HREF="javascript:y">z</A>')
+    expect(result.html).toBe('<a>z</a>')
+    expect(result.diffs).toStrictEqual([
+      { type: 'removed-tag', tag: 'script', excerpt: '<script>' },
+      { type: 'removed-attr', tag: 'a', attr: 'href', excerpt: 'href="javascript:y"' },
+    ])
+  })
+
+  it('excerpt 上限 80 字符；控制字符转义为 \\uXXXX 形式', () => {
+    const long = sanitizeBodyHtml(`<p onclick="${'A'.repeat(200)}">x</p>`)
+    const diff = long.diffs[0]
+    expect(diff?.excerpt).toHaveLength(80)
+    expect(diff?.excerpt.startsWith('onclick="')).toBe(true)
+    // 真实控制字符（U+0001）进属性值 → excerpt 以 \u0001 转义文本呈现
+    const ctrl = sanitizeBodyHtml('<p onclick="\u0001abc">t</p>')
+    expect(ctrl.diffs[0]?.excerpt).toBe('onclick="\\u0001abc"')
+  })
+
+  it('__proto__ / constructor 属性名安全：不抛错、不污染 Object.prototype', () => {
+    const result = sanitizeBodyHtml('<p __proto__="v" constructor="c">x</p>')
+    expect(result.html).toBe('<p>x</p>')
+    expect(({} as Record<string, unknown>).v).toBeUndefined() // 原型未被污染
+    // constructor 为普通未批准属性 → removed-attr；__proto__ 被解析器吞掉（不可见即不可报）
+    for (const diff of result.diffs) {
+      expect(diff.type).toBe('removed-attr')
+      expect(diff.tag).toBe('p')
+    }
+    expect(result.diffs.some((d) => d.attr === 'constructor')).toBe(true)
+  })
+})
+
+describe('sanitizeBodyHtml：边界输入', () => {
+  it('空串 → 空串、零 diff', () => {
+    expect(sanitizeBodyHtml('')).toStrictEqual({ html: '', diffs: [] })
+  })
+
+  it('纯文本 → 原样、零 diff', () => {
+    expect(sanitizeBodyHtml('Hello World')).toStrictEqual({ html: 'Hello World', diffs: [] })
+  })
+})
+
+describe('追踪像素策略（本切片钉死：外链 img 一律保留，含 1x1）', () => {
+  it('1x1 外链 img 原样保留（宽高属性一并保留），零 diff', () => {
+    const doc = '<p><img src="https://tracker.example/px.gif" width="1" height="1" alt="" /></p>'
+    const result = sanitizeBodyHtml(doc)
+    expect(result.html).toBe(doc)
+    expect(result.diffs).toStrictEqual([])
+  })
+})
+
+describe('SANITIZE_CONFIG：白名单冻结与钉死', () => {
+  it('配置对象冻结（浅层），allowedTags 精确清单（无 script/style/iframe/form/svg/h1）', () => {
+    expect(Object.isFrozen(SANITIZE_CONFIG)).toBe(true)
+    expect(SANITIZE_CONFIG.allowedTags).toStrictEqual([
+      'a', 'abbr', 'b', 'blockquote', 'br', 'caption', 'cite', 'code', 'col', 'colgroup',
+      'dd', 'del', 'details', 'div', 'dl', 'dt', 'em', 'figcaption', 'figure', 'h2',
+      'h3', 'h4', 'h5', 'h6', 'hr', 'i', 'img', 'ins', 'kbd', 'li',
+      'mark', 'ol', 'p', 'pre', 'q', 's', 'samp', 'small', 'span', 'strong',
+      'sub', 'summary', 'sup', 'table', 'tbody', 'td', 'tfoot', 'th', 'thead', 'time',
+      'tr', 'u', 'ul', 'var',
+    ])
+    // allowIframe:false 等价物 = iframe 不在白名单（无 allowedIframeHosts 通道）
+    expect(SANITIZE_CONFIG.allowedTags).not.toContain('iframe')
+    expect(SANITIZE_CONFIG.allowedTags).not.toContain('script')
+    expect(SANITIZE_CONFIG.allowedTags).not.toContain('style')
+    expect(SANITIZE_CONFIG.allowedTags).not.toContain('h1')
+  })
+
+  it('allowedAttributes 关键表钉死：a 链接属性 / img 图像属性 / 表格单元格 / 通用 class|id', () => {
+    // 类型联合含 false 形态（运行时不可能，配置钉死为表）——测试断言侧收窄
+    const attrs = SANITIZE_CONFIG.allowedAttributes as Record<string, string[]>
+    expect(attrs['*']).toStrictEqual(['class', 'dir', 'id', 'lang', 'title'])
+    expect(attrs.a).toStrictEqual(['href', 'name', 'rel', 'target'])
+    expect(attrs.img).toStrictEqual([
+      'alt', 'decoding', 'height', 'loading', 'sizes', 'src', 'srcset', 'width',
+    ])
+    expect(attrs.td).toStrictEqual(['colspan', 'headers', 'rowspan', 'scope'])
+    expect(attrs.th).toStrictEqual(['abbr', 'colspan', 'headers', 'rowspan', 'scope'])
+  })
+
+  it('协议白名单钉死：http/https/mailto/tel；协议相对 URL 放行', () => {
+    expect(SANITIZE_CONFIG.allowedSchemes).toStrictEqual(['http', 'https', 'mailto', 'tel'])
+    expect(SANITIZE_CONFIG.allowProtocolRelative).toBe(true)
+  })
+
+  it('仪表化不影响输出：sanitizeHtml(x, SANITIZE_CONFIG) 与 sanitizeBodyHtml(x).html 逐字节一致', () => {
+    const dirty =
+      '<p onclick="a()">t1</p><script>evil()</script><a href="javascript:x">t2</a><iframe src="https://e.example/f">fb</iframe><img src="https://ok.example/p.png" onerror="y()" alt="ok">'
+    expect(sanitizeHtml(dirty, { ...SANITIZE_CONFIG })).toBe(sanitizeBodyHtml(dirty).html)
+    expect(sanitizeHtml(MINI_101_BODY, { ...SANITIZE_CONFIG })).toBe(sanitizeBodyHtml(MINI_101_BODY).html)
+  })
+})
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 3d2aebd..1babfa7 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -66,9 +66,16 @@ importers:
       '@sf/contracts':
         specifier: workspace:*
         version: link:../contracts
+      sanitize-html:
+        specifier: ^2
+        version: 2.18.1
       saxes:
         specifier: ^6.0.0
         version: 6.0.0
+    devDependencies:
+      '@types/sanitize-html':
+        specifier: ^2.16.2
+        version: 2.16.2
 
   packages/contracts: {}
 
@@ -917,6 +924,9 @@ packages:
   '@types/node@22.20.5':
     resolution: {integrity: sha512-U2+DNr+wSjpsTS/wZGYHq7GcwfuSmKiKvoPvK22zwTlRhU91yOniN4qRR5KhIjvif7ysw/dz/hKmfDH0Ris4aA==}
 
+  '@types/sanitize-html@2.16.2':
+    resolution: {integrity: sha512-kuAbgDCFv418flrp3z4o/4ufLA/5ovmXRH0L419iZCPGO7w00znjeDI5Wy/KZWNIBpDQc7hucCK+J5almB6FyA==}
+
   '@typescript-eslint/eslint-plugin@8.72.0':
     resolution: {integrity: sha512-aysKgysPX9XOv/dk95UkvUDe++Q3n3dJPG9CEWT3RUccxfkPJ+Qn6nhKPDhZXU6Ofo9kgwGWwKyQCnZIXTgngg==}
     engines: {node: ^18.18.0 || ^20.9.0 || >=21.1.0}
@@ -1083,6 +1093,9 @@ packages:
     resolution: {integrity: sha512-uV2QOWP2nWzsy2aMp8aRibhi9dlzF5Hgh5SHaB9OiTGEyDTiJJyx0uy51QXdyWbtAHNua4XJzUKca3OzKUd3vA==}
     engines: {node: '>= 8'}
 
+  dayjs@1.11.23:
+    resolution: {integrity: sha512-QDTCU0M0MxR3hQfnlDJfwekQiaanm1ubOD231u73WBckQ/fsamwRLiE2GBz6D3a/xF1NgfiDLJjXBa1hYOYTtQ==}
+
   debug@4.4.3:
     resolution: {integrity: sha512-RGwwWnwQvkVfavKVt22FGLw+xYSdzARwm0ru6DhTVA3umU5hZc28V3kO4stgYryrTlLpuvgI9GiijltAjNbcqA==}
     engines: {node: '>=6.0'}
@@ -1099,6 +1112,22 @@ packages:
   deep-is@0.1.4:
     resolution: {integrity: sha512-oIPzksmTg4/MriiaYGO+okXDT7ztn/w3Eptv/+gSIdMdKsJo0u4CfYNFJPy+4SKMuCqGw2wxnA+URMg3t8a/bQ==}
 
+  dom-serializer@3.1.1:
+    resolution: {integrity: sha512-4MEa38/QexBob6gFNwu+EGdWvhJ1OKuNwdYY3Y3NyeWDQfnGeDYQUDfIRzWu5B5gsv03so2Uxd28YC6zrsx3Lw==}
+    engines: {node: '>=20.19.0'}
+
+  domelementtype@3.0.0:
+    resolution: {integrity: sha512-umCQid3jKbDmVjx8jGaW7uUykm4DEUeyV21hPxNMo2nV955DhUThwqyOIDtreepP31hl84X7G5U9ZfsWvIB3Pg==}
+    engines: {node: '>=20.19.0'}
+
+  domhandler@6.0.1:
+    resolution: {integrity: sha512-gYzvtM72ZtxQO0T048kd6HWSbbGCNOUwcnfQ01cqIJ4X2IYKFFHZ5mKvrQETcFXxsRObZulDaKmy//R7TPtsBg==}
+    engines: {node: '>=20.19.0'}
+
+  domutils@4.0.2:
+    resolution: {integrity: sha512-qI4JLRKnSzqFqr7hAlS5xQDusBCjKSEG4t4+7aNrIQMHBcsC2TGEhuyABJdYkgSewL57PNLYEiibY2iPKhKpaA==}
+    engines: {node: '>=20.19.0'}
+
   dotenv@18.0.8:
     resolution: {integrity: sha512-2KDeoFoK/zRtcnbunCDlLG5VWVMcyqeQc6iK65o231nfNAcuGrKoqUQfJFUtBI+QlShk5HKIHxwebBtUl3rEfA==}
     engines: {node: '>=12'}
@@ -1203,6 +1232,10 @@ packages:
       sqlite3:
         optional: true
 
+  entities@8.1.0:
+    resolution: {integrity: sha512-kxL7msIffSuh9aaFAMD7rxAIuTRMAHMeBtgHW2yUdWw732ZNh4MehkF2gdjvtdmikkaIP9bFDDJOPlsvm7avrA==}
+    engines: {node: '>=20.19.0'}
+
   es-module-lexer@1.7.0:
     resolution: {integrity: sha512-jEQoCwk8hyb2AZziIOLhDqpm5+2ww5uIE6lkO/6jcOCusfk6LhMHpXXfBLXTZ7Ydyt0j4VoUQv6uGNYbdW+kBA==}
 
@@ -1347,6 +1380,10 @@ packages:
     resolution: {integrity: sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ==}
     engines: {node: '>=8'}
 
+  htmlparser2@12.0.0:
+    resolution: {integrity: sha512-Tz7u1i95/g2x2jz81+x0FBVhBhY5aRTvD3tXXdFaljuNdzDLJ8UGNRrTcj2cgQvAg3iW/h77Fz15nLW0L0CrZw==}
+    engines: {node: '>=20.19.0'}
+
   ieee754@1.2.1:
     resolution: {integrity: sha512-dcyqhDvX1C46lXZcVqCpK+FtMRQVdIMN6/Df5js2zouUsqG7I6sFxitIC+7KYK29KdXOLHdu9zL4sFnoVQnqaA==}
 
@@ -1374,6 +1411,10 @@ packages:
     resolution: {integrity: sha512-xelSayHH36ZgE7ZWhli7pW34hNbNl8Ojv5KVmkJD4hBdD3th8Tfk9vYasLM+mXWOZhFkgZfxhLSnrwRr4elSSg==}
     engines: {node: '>=0.10.0'}
 
+  is-plain-object@5.1.0:
+    resolution: {integrity: sha512-bUi/yjmtKYcRVUtWRGr0UA6xEFh2I6zWUwMrUXB3s7bmYCaZ8a+0ZsTRkrawh/mzlSD1Y0Ph8bp/U+TvBpWDNw==}
+    engines: {node: '>=0.10.0'}
+
   isexe@2.0.0:
     resolution: {integrity: sha512-RHxMLp9lnKHGHRng9QFhRCMbYAcVpn69smSGcq3f36xjgVVWThj4qqLbTLlq7Ssj8B+fIQ1EuCEGI2lKsyQeIw==}
 
@@ -1397,6 +1438,9 @@ packages:
   keyv@4.5.4:
     resolution: {integrity: sha512-oxVHkHR/EJf2CNXnWxRLW6mg7JyCCUcG0DtEGmL2ctUo1PNTin1PUil+r/+4r5MpVgC/fn1kjsx7mjSujKqIpw==}
 
+  launder@1.7.2:
+    resolution: {integrity: sha512-DLg3HPnHUfBi5/MxMLmJD12dmlMpFEC2HgMW6vkZ/9JR0RU00kXoRGvDxAvFmdO0o610OA77i4FgNTLucmhDVg==}
+
   levn@0.4.1:
     resolution: {integrity: sha512-+bT2uH4E5LGE7h/n3evcS/sQlJXCpIp6ym8OWJ5eV6+67Dsql/LaaT7qJBAt2rzfoa/5QBGBhxDix1dMt2kQKQ==}
     engines: {node: '>= 0.8.0'}
@@ -1457,6 +1501,9 @@ packages:
     resolution: {integrity: sha512-GQ2EWRpQV8/o+Aw8YqtfZZPfNRWZYkbidE9k5rpl/hC3vtHHBfGm2Ifi6qWV+coDGkrUKZAxE3Lot5kcsRlh+g==}
     engines: {node: '>=6'}
 
+  parse-srcset@1.0.2:
+    resolution: {integrity: sha512-/2qh0lav6CmI15FzA3i/2Bzk2zCgQhGMkvhOhKNcBVQ1ldgpbfiNTVslmooUmWJcADi1f1kIeynbDRVzNlfR6Q==}
+
   path-exists@4.0.0:
     resolution: {integrity: sha512-ak9Qy5Q7jYb2Wwcey5Fpvg2KoAc/ZIhLSLOSBmRmygPsGwkVVt0fZa0qrtMz+m6tJTAHfZQ8FnmB4MG4LWy7/w==}
     engines: {node: '>=8'}
@@ -1516,6 +1563,10 @@ packages:
   rxjs@7.8.2:
     resolution: {integrity: sha512-dhKf903U/PQZY6boNNtAGdWbG85WAbjT/1xYoZIC7FAY0yWapOBQVsVrDl58W86//e1VpMNBtRV4MaXfdMySFA==}
 
+  sanitize-html@2.18.1:
+    resolution: {integrity: sha512-2X5lC8fYla8YaT8g73Nj+HcLWXan5dLyCWLgVvaOmfw7JI78IRsyNtIDytTHdn7hBQbIkCah7Zbmd5jabzeDig==}
+    engines: {node: '>=22.12.0'}
+
   saxes@6.0.0:
     resolution: {integrity: sha512-xAg7SOnEhrm5zI3puOOKyy1OMcMlIJZYNJY7xLBwSze0UjhPLnWfj2GF2EpT0jmzaJKIWKHLsaSSajf35bcYnA==}
     engines: {node: '>=v12.22.7'}
@@ -2228,6 +2279,10 @@ snapshots:
     dependencies:
       undici-types: 6.21.0
 
+  '@types/sanitize-html@2.16.2':
+    dependencies:
+      htmlparser2: 12.0.0
+
   '@typescript-eslint/eslint-plugin@8.72.0(@typescript-eslint/parser@8.72.0(eslint@9.39.5)(typescript@5.9.3))(eslint@9.39.5)(typescript@5.9.3)':
     dependencies:
       '@eslint-community/regexpp': 4.12.2
@@ -2430,6 +2485,8 @@ snapshots:
       shebang-command: 2.0.0
       which: 2.0.2
 
+  dayjs@1.11.23: {}
+
   debug@4.4.3:
     dependencies:
       ms: 2.1.3
@@ -2438,6 +2495,24 @@ snapshots:
 
   deep-is@0.1.4: {}
 
+  dom-serializer@3.1.1:
+    dependencies:
+      domelementtype: 3.0.0
+      domhandler: 6.0.1
+      entities: 8.1.0
+
+  domelementtype@3.0.0: {}
+
+  domhandler@6.0.1:
+    dependencies:
+      domelementtype: 3.0.0
+
+  domutils@4.0.2:
+    dependencies:
+      dom-serializer: 3.1.1
+      domelementtype: 3.0.0
+      domhandler: 6.0.1
+
   dotenv@18.0.8: {}
 
   drizzle-kit@0.31.11:
@@ -2451,6 +2526,8 @@ snapshots:
     optionalDependencies:
       postgres: 3.4.9
 
+  entities@8.1.0: {}
+
   es-module-lexer@1.7.0: {}
 
   esbuild@0.18.20:
@@ -2692,6 +2769,13 @@ snapshots:
 
   has-flag@4.0.0: {}
 
+  htmlparser2@12.0.0:
+    dependencies:
+      domelementtype: 3.0.0
+      domhandler: 6.0.1
+      domutils: 4.0.2
+      entities: 8.1.0
+
   ieee754@1.2.1: {}
 
   ignore@5.3.2: {}
@@ -2711,6 +2795,8 @@ snapshots:
     dependencies:
       is-extglob: 2.1.1
 
+  is-plain-object@5.1.0: {}
+
   isexe@2.0.0: {}
 
   iterare@1.2.1: {}
@@ -2729,6 +2815,10 @@ snapshots:
     dependencies:
       json-buffer: 3.0.1
 
+  launder@1.7.2:
+    dependencies:
+      dayjs: 1.11.23
+
   levn@0.4.1:
     dependencies:
       prelude-ls: 1.2.1
@@ -2785,6 +2875,8 @@ snapshots:
     dependencies:
       callsites: 3.1.0
 
+  parse-srcset@1.0.2: {}
+
   path-exists@4.0.0: {}
 
   path-key@3.1.1: {}
@@ -2853,6 +2945,15 @@ snapshots:
     dependencies:
       tslib: 2.8.1
 
+  sanitize-html@2.18.1:
+    dependencies:
+      escape-string-regexp: 4.0.0
+      htmlparser2: 12.0.0
+      is-plain-object: 5.1.0
+      launder: 1.7.2
+      parse-srcset: 1.0.2
+      postcss: 8.5.31
+
   saxes@6.0.0:
     dependencies:
       xmlchars: 2.2.0