diff --git a/backend/src/api/oaDocument.js b/backend/src/api/oaDocument.js
new file mode 100644
index 0000000..e3affe0
--- /dev/null
+++ b/backend/src/api/oaDocument.js
@@ -0,0 +1,188 @@
+import request from "@/utils/request";
+
+// OA 文档管理（文档库 / 文档图谱）
+// 后端统一返回 { code, msg, data }，响应拦截器只剥离外层，调用方需自行取 res.data
+
+// ---------------- 分类 ----------------
+
+// 分类树（每个节点带 doc_count）
+export function getDocCategories() {
+  return request({
+    url: "/backend/oa/document/categories",
+    method: "get"
+  });
+}
+
+export function createDocCategory(data) {
+  return request({
+    url: "/backend/oa/document/categories",
+    method: "post",
+    data
+  });
+}
+
+export function updateDocCategory(id, data) {
+  return request({
+    url: `/backend/oa/document/categories/${id}`,
+    method: "post",
+    data
+  });
+}
+
+export function deleteDocCategory(id) {
+  return request({
+    url: `/backend/oa/document/categories/${id}`,
+    method: "delete"
+  });
+}
+
+// ---------------- 文档 ----------------
+
+export function getDocList(params) {
+  return request({
+    url: "/backend/oa/document/list",
+    method: "get",
+    params
+  });
+}
+
+export function getDocStats() {
+  return request({
+    url: "/backend/oa/document/stats",
+    method: "get"
+  });
+}
+
+// 详情（后端会累加查看次数）
+export function getDocDetail(id) {
+  return request({
+    url: `/backend/oa/document/detail/${id}`,
+    method: "get"
+  });
+}
+
+export function createDoc(data) {
+  return request({
+    url: "/backend/oa/document/create",
+    method: "post",
+    data
+  });
+}
+
+export function updateDoc(id, data) {
+  return request({
+    url: `/backend/oa/document/update/${id}`,
+    method: "post",
+    data
+  });
+}
+
+export function deleteDoc(id) {
+  return request({
+    url: `/backend/oa/document/delete/${id}`,
+    method: "delete"
+  });
+}
+
+export function batchDeleteDocs(ids) {
+  return request({
+    url: "/backend/oa/document/delete-batch",
+    method: "post",
+    data: { ids }
+  });
+}
+
+export function moveDocs(ids, categoryId) {
+  return request({
+    url: "/backend/oa/document/move",
+    method: "post",
+    data: { ids, category_id: categoryId }
+  });
+}
+
+// 收藏 / 取消收藏
+export function toggleDocStar(id) {
+  return request({
+    url: `/backend/oa/document/star/${id}`,
+    method: "post"
+  });
+}
+
+// 记录下载次数并取回下载地址
+export function recordDocDownload(id) {
+  return request({
+    url: `/backend/oa/document/download/${id}`,
+    method: "post"
+  });
+}
+
+// ---------------- 文档关联 ----------------
+
+export function getDocLinks(params) {
+  return request({
+    url: "/backend/oa/document/links",
+    method: "get",
+    params
+  });
+}
+
+export function createDocLink(data) {
+  return request({
+    url: "/backend/oa/document/links",
+    method: "post",
+    data
+  });
+}
+
+export function deleteDocLink(id) {
+  return request({
+    url: `/backend/oa/document/links/${id}`,
+    method: "delete"
+  });
+}
+
+// ---------------- 文档私密共享 ----------------
+
+// 租户用户列表（私密文档共享选人）
+export function getDocMembers(params) {
+  return request({
+    url: "/backend/oa/document/members",
+    method: "get",
+    params
+  });
+}
+
+// 读取文档共享清单
+export function getDocShares(id) {
+  return request({
+    url: `/backend/oa/document/shares/${id}`,
+    method: "get"
+  });
+}
+
+// 全量设置文档共享（shares: [{ share_type, target_id }]）
+export function setDocShares(id, shares) {
+  return request({
+    url: `/backend/oa/document/shares/${id}`,
+    method: "post",
+    data: { shares }
+  });
+}
+
+// 删除单条共享
+export function removeDocShare(sid) {
+  return request({
+    url: `/backend/oa/document/share/${sid}`,
+    method: "delete"
+  });
+}
+
+// ---------------- 文档图谱 ----------------
+
+export function getDocGraph(params) {
+  return request({
+    url: "/backend/oa/document/graph",
+    method: "get",
+    params
+  });
+}
diff --git a/backend/src/views/apps/oa/document/documentgraph/index.vue b/backend/src/views/apps/oa/document/documentgraph/index.vue
index e69de29..c4b422c 100644
--- a/backend/src/views/apps/oa/document/documentgraph/index.vue
+++ b/backend/src/views/apps/oa/document/documentgraph/index.vue
@@ -0,0 +1,666 @@
+<template>
+  <div class="doc-graph-page">
+    <div class="page-header">
+      <div>
+        <h2>文档图谱</h2>
+        <p>以知识图谱呈现文档之间的引用、相关与归属关系，点击节点查看文档详情</p>
+      </div>
+      <div class="header-actions">
+        <el-button :icon="Refresh" @click="loadGraph">刷新</el-button>
+        <el-button type="primary" :icon="Aim" @click="fitView">重新布局</el-button>
+      </div>
+    </div>
+
+    <div class="graph-layout">
+      <!-- 左侧：图谱 -->
+      <div class="graph-card">
+        <div class="filter-bar">
+          <el-input
+            v-model="filters.keyword"
+            clearable
+            placeholder="搜索文档"
+            style="width: 200px"
+            @keyup.enter="loadGraph"
+          />
+          <el-tree-select
+            v-model="filters.category_id"
+            :data="categories"
+            :props="{ label: 'name', children: 'children' }"
+            node-key="id"
+            check-strictly
+            clearable
+            placeholder="全部分类"
+            style="width: 180px"
+          />
+          <el-select
+            v-model="filters.relation"
+            clearable
+            placeholder="全部关系"
+            style="width: 130px"
+          >
+            <el-option
+              v-for="r in DOC_RELATION_OPTIONS"
+              :key="r.value"
+              :label="r.label"
+              :value="r.value"
+            />
+          </el-select>
+          <el-select v-model="filters.limit" style="width: 130px">
+            <el-option label="最多 100 个" :value="100" />
+            <el-option label="最多 300 个" :value="300" />
+            <el-option label="最多 600 个" :value="600" />
+          </el-select>
+          <el-checkbox v-model="filters.includeCategory">显示分类中心</el-checkbox>
+          <el-checkbox v-model="filters.onlyLinked">仅看有关系的文档</el-checkbox>
+          <el-button type="primary" :icon="Search" @click="loadGraph">生成图谱</el-button>
+          <el-button :icon="RefreshLeft" @click="resetFilters">重置</el-button>
+        </div>
+
+        <div v-loading="loading" class="chart-wrap">
+          <div ref="chartRef" class="chart" />
+          <el-empty
+            v-if="!loading && !nodes.length"
+            description="暂无可展示的文档，请先到文档库上传文档"
+            class="chart-empty"
+          />
+        </div>
+
+        <div class="legend">
+          <span class="legend-item">
+            <i class="dot" style="background: #409eff" />文档
+          </span>
+          <span class="legend-item">
+            <i class="dot" style="background: #e6a23c" />分类
+          </span>
+          <span class="legend-item">
+            <i class="line solid" />关联关系
+          </span>
+          <span class="legend-item">
+            <i class="line dashed" />归属分类
+          </span>
+          <span class="legend-tip">滚轮缩放 · 拖拽平移 · 点击节点查看详情</span>
+        </div>
+      </div>
+
+      <!-- 右侧：统计 -->
+      <div class="side-card">
+        <div class="side-title">图谱概览</div>
+        <div class="side-stats">
+          <div class="side-stat">
+            <span class="label">文档节点</span>
+            <span class="value">{{ stats.doc_count || 0 }}</span>
+          </div>
+          <div class="side-stat">
+            <span class="label">分类节点</span>
+            <span class="value">{{ stats.category_count || 0 }}</span>
+          </div>
+          <div class="side-stat">
+            <span class="label">关联关系</span>
+            <span class="value primary">{{ stats.link_count || 0 }}</span>
+          </div>
+          <div class="side-stat">
+            <span class="label">孤立文档</span>
+            <span class="value warning">{{ stats.isolated_count || 0 }}</span>
+          </div>
+          <div class="side-stat">
+            <span class="label">平均关联度</span>
+            <span class="value">{{
+              Number(stats.avg_degree || 0).toFixed(2)
+            }}</span>
+          </div>
+        </div>
+
+        <el-divider content-position="left">关系分布</el-divider>
+        <div v-if="relationCounts.length" class="relation-list">
+          <div v-for="r in relationCounts" :key="r.relation" class="relation-item">
+            <span>{{ r.label }}</span>
+            <el-progress
+              :percentage="relationPercent(r.count)"
+              :stroke-width="10"
+              :show-text="false"
+              style="width: 120px"
+            />
+            <span class="relation-count">{{ r.count }}</span>
+          </div>
+        </div>
+        <el-empty v-else description="暂无关联关系" :image-size="60" />
+
+        <el-divider content-position="left">核心文档 Top 8</el-divider>
+        <div v-if="topNodes.length" class="top-list">
+          <div
+            v-for="(n, i) in topNodes"
+            :key="n.id"
+            class="top-item"
+            @click="openNode(n)"
+          >
+            <span class="rank" :class="{ top: i < 3 }">{{ i + 1 }}</span>
+            <span class="top-name" :title="n.name">{{ n.name }}</span>
+            <span class="top-degree">{{ n.degree }} 关联</span>
+          </div>
+        </div>
+        <el-empty v-else description="暂无数据" :image-size="60" />
+      </div>
+    </div>
+
+    <DocDetailDrawer
+      v-model="detailVisible"
+      :doc-id="detailId"
+      :categories="categories"
+      @link-changed="loadGraph"
+      @star-changed="loadGraph"
+    />
+  </div>
+</template>
+
+<script setup>
+import { computed, nextTick, onBeforeUnmount, onMounted, reactive, ref } from "vue";
+import { ElMessage } from "element-plus";
+import { Aim, Refresh, RefreshLeft, Search } from "@element-plus/icons-vue";
+import * as echarts from "echarts";
+import DocDetailDrawer from "../documentlibrary/components/docDetailDrawer.vue";
+import { getDocCategories, getDocGraph } from "@/api/oaDocument";
+import { DOC_RELATION_OPTIONS, docTypeColor, docTypeLabel } from "../utils";
+
+const chartRef = ref(null);
+let chart = null;
+let resizeObserver = null;
+let themeObserver = null;
+
+const loading = ref(false);
+const categories = ref([]);
+const nodes = ref([]);
+const links = ref([]);
+const stats = ref({});
+const relationCounts = ref([]);
+const topNodes = ref([]);
+
+const detailVisible = ref(false);
+const detailId = ref(0);
+
+const filters = reactive({
+  keyword: "",
+  category_id: null,
+  relation: "",
+  limit: 300,
+  includeCategory: true,
+  onlyLinked: false
+});
+
+function isDark() {
+  return document.documentElement.classList.contains("dark");
+}
+
+function buildOption() {
+  const dark = isDark();
+  const textColor = dark ? "#e5eaf3" : "#303133";
+  const subTextColor = dark ? "#a3a6ad" : "#909399";
+  const axisColor = dark ? "#3a3a3a" : "#e0e6ed";
+
+  const data = nodes.value.map(n => {
+    const isCategory = n.category === 1;
+    const size = isCategory
+      ? 42
+      : Math.min(58, 22 + (n.degree || 0) * 5);
+    return {
+      id: n.id,
+      name: n.name,
+      category: n.category,
+      symbolSize: size,
+      value: n.value,
+      // 供 tooltip / 点击回查
+      docId: n.doc_id,
+      categoryId: n.category_id,
+      docType: n.doc_type,
+      status: n.status,
+      ext: n.ext,
+      tags: n.tags,
+      ownerName: n.owner_name,
+      viewCount: n.view_count,
+      degree: n.degree,
+      itemStyle: {
+        color: isCategory ? "#e6a23c" : docTypeColor(n.doc_type),
+        borderColor: dark ? "#1f1f1f" : "#fff",
+        borderWidth: 2,
+        shadowBlur: 10,
+        shadowColor: dark ? "rgba(0,0,0,0.5)" : "rgba(0,0,0,0.15)"
+      },
+      label: {
+        show: true,
+        position: "right",
+        fontSize: isCategory ? 13 : 12,
+        fontWeight: isCategory ? 600 : 400,
+        color: textColor
+      }
+    };
+  });
+
+  const edgeList = links.value.map(l => ({
+    source: l.source,
+    target: l.target,
+    value: l.label,
+    lineStyle: {
+      width: l.kind === "belong" ? 1 : 1.6,
+      type: l.kind === "belong" ? "dashed" : "solid",
+      opacity: l.kind === "belong" ? 0.45 : 0.8,
+      curveness: 0.12
+    }
+  }));
+
+  return {
+    backgroundColor: "transparent",
+    tooltip: {
+      trigger: "item",
+      backgroundColor: dark ? "#1f1f1f" : "#fff",
+      borderColor: axisColor,
+      textStyle: { color: textColor, fontSize: 12 },
+      formatter: params => {
+        if (params.dataType !== "node") {
+          return params.data?.value ? `关系：${params.data.value}` : "";
+        }
+        const d = params.data;
+        if (d.category === 1) {
+          return `<b>${d.name}</b><br/>分类中心 · ${d.degree || 0} 个关联`;
+        }
+        return [
+          `<b>${d.name}</b>`,
+          `类型：${docTypeLabel(d.docType)}`,
+          `标签：${d.tags || "-"}`,
+          `负责人：${d.ownerName || "-"}`,
+          `关联数：${d.degree || 0}`,
+          `查看：${d.viewCount || 0}`
+        ].join("<br/>");
+      }
+    },
+    series: [
+      {
+        type: "graph",
+        layout: "force",
+        roam: true,
+        draggable: true,
+        data,
+        links: edgeList,
+        categories: [
+          { name: "文档", itemStyle: { color: "#409eff" } },
+          { name: "分类", itemStyle: { color: "#e6a23c" } }
+        ],
+        force: {
+          repulsion: nodes.value.length > 200 ? 90 : 160,
+          edgeLength: [70, 150],
+          gravity: 0.08
+        },
+        emphasis: {
+          focus: "adjacency",
+          scale: 1.15,
+          lineStyle: { width: 3, opacity: 1 }
+        },
+        lineStyle: { color: "source", opacity: 0.8 },
+        label: { color: textColor },
+        selectedMode: "single"
+      }
+    ],
+    textStyle: { color: subTextColor }
+  };
+}
+
+function renderChart() {
+  if (!chartRef.value) return;
+  if (!chart) {
+    chart = echarts.init(chartRef.value);
+    chart.on("click", handleChartClick);
+  }
+  chart.setOption(buildOption(), true);
+}
+
+function fitView() {
+  // 力导向图无内置"复位"动作，重新渲染即可回到初始布局与缩放
+  renderChart();
+}
+
+function handleChartClick(params) {
+  if (params.dataType !== "node") return;
+  openNode(params.data);
+}
+
+function openNode(node) {
+  if (Number(node.category) === 1) {
+    // 分类节点：按该分类过滤图谱
+    filters.category_id = node.categoryId ?? node.category_id ?? null;
+    loadGraph();
+    return;
+  }
+  const docId = node.docId ?? node.doc_id;
+  if (docId) {
+    detailId.value = docId;
+    detailVisible.value = true;
+  }
+}
+
+async function loadCategories() {
+  const res = await getDocCategories();
+  if (res?.code === 200) {
+    categories.value = res.data || [];
+  }
+}
+
+async function loadGraph() {
+  loading.value = true;
+  try {
+    const res = await getDocGraph({
+      keyword: filters.keyword || "",
+      category_id: filters.category_id || 0,
+      relation: filters.relation || "",
+      limit: filters.limit,
+      include_category: filters.includeCategory ? 1 : 0,
+      only_linked: filters.onlyLinked ? 1 : 0
+    });
+    if (res?.code === 200) {
+      const data = res.data || {};
+      nodes.value = data.nodes || [];
+      links.value = data.links || [];
+      stats.value = data.stats || {};
+      relationCounts.value = stats.value.relation_counts || [];
+      topNodes.value = stats.value.top_nodes || [];
+      await nextTick();
+      renderChart();
+    } else {
+      ElMessage.error(res?.msg || "加载图谱失败");
+    }
+  } finally {
+    loading.value = false;
+  }
+}
+
+function resetFilters() {
+  filters.keyword = "";
+  filters.category_id = null;
+  filters.relation = "";
+  filters.limit = 300;
+  filters.includeCategory = true;
+  filters.onlyLinked = false;
+  loadGraph();
+}
+
+const relationMax = computed(() =>
+  Math.max(1, ...relationCounts.value.map(r => r.count || 0))
+);
+function relationPercent(count) {
+  return Math.round(((count || 0) * 100) / relationMax.value);
+}
+
+function handleResize() {
+  chart?.resize();
+}
+
+onMounted(() => {
+  loadCategories();
+  loadGraph();
+  nextTick(() => {
+    if (!chartRef.value) return;
+    resizeObserver = new ResizeObserver(handleResize);
+    resizeObserver.observe(chartRef.value);
+  });
+  themeObserver = new MutationObserver(() => renderChart());
+  themeObserver.observe(document.documentElement, {
+    attributes: true,
+    attributeFilter: ["class"]
+  });
+});
+
+onBeforeUnmount(() => {
+  resizeObserver?.disconnect();
+  themeObserver?.disconnect();
+  chart?.dispose();
+  chart = null;
+});
+</script>
+
+<style lang="less" scoped>
+.doc-graph-page {
+  padding: 16px 20px 24px;
+}
+
+.page-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  margin-bottom: 14px;
+}
+
+.page-header h2 {
+  margin: 0 0 4px;
+  font-size: 20px;
+}
+
+.page-header p {
+  margin: 0;
+  color: #909399;
+  font-size: 13px;
+}
+
+.header-actions {
+  display: flex;
+  gap: 10px;
+}
+
+.graph-layout {
+  display: flex;
+  gap: 14px;
+  align-items: flex-start;
+}
+
+.graph-card {
+  flex: 1;
+  min-width: 0;
+  background: #fff;
+  border: 1px solid #ebeef5;
+  border-radius: 8px;
+  padding: 14px;
+}
+
+.filter-bar {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  flex-wrap: wrap;
+  margin-bottom: 10px;
+}
+
+.chart-wrap {
+  position: relative;
+  width: 100%;
+  height: 620px;
+}
+
+.chart {
+  width: 100%;
+  height: 100%;
+}
+
+.chart-empty {
+  position: absolute;
+  inset: 0;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.legend {
+  display: flex;
+  align-items: center;
+  gap: 16px;
+  flex-wrap: wrap;
+  margin-top: 8px;
+  font-size: 12px;
+  color: #606266;
+}
+
+.legend-item {
+  display: inline-flex;
+  align-items: center;
+  gap: 5px;
+}
+
+.dot {
+  width: 10px;
+  height: 10px;
+  border-radius: 50%;
+  display: inline-block;
+}
+
+.line {
+  width: 22px;
+  height: 0;
+  display: inline-block;
+
+  &.solid {
+    border-top: 2px solid #909399;
+  }
+
+  &.dashed {
+    border-top: 2px dashed #c0c4cc;
+  }
+}
+
+.legend-tip {
+  margin-left: auto;
+  color: #909399;
+}
+
+.side-card {
+  width: 300px;
+  flex: 0 0 300px;
+  background: #fff;
+  border: 1px solid #ebeef5;
+  border-radius: 8px;
+  padding: 14px;
+}
+
+.side-title {
+  font-weight: 600;
+  margin-bottom: 10px;
+}
+
+.side-stats {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+
+.side-stat {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  font-size: 13px;
+}
+
+.side-stat .label {
+  color: #909399;
+}
+
+.side-stat .value {
+  font-weight: 600;
+  color: #303133;
+
+  &.primary {
+    color: #409eff;
+  }
+  &.warning {
+    color: #e6a23c;
+  }
+}
+
+.relation-list {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+
+.relation-item {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  font-size: 13px;
+}
+
+.relation-count {
+  color: #909399;
+}
+
+.top-list {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+}
+
+.top-item {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 5px 6px;
+  border-radius: 6px;
+  cursor: pointer;
+  font-size: 13px;
+
+  &:hover {
+    background: #f5f7fa;
+  }
+}
+
+.rank {
+  width: 20px;
+  height: 20px;
+  line-height: 20px;
+  text-align: center;
+  border-radius: 4px;
+  background: #f0f2f5;
+  color: #909399;
+  font-size: 12px;
+
+  &.top {
+    background: #409eff;
+    color: #fff;
+  }
+}
+
+.top-name {
+  flex: 1;
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.top-degree {
+  color: #909399;
+  font-size: 12px;
+}
+
+// ===== 暗色主题适配 =====
+html.dark & {
+  .page-header p {
+    color: var(--el-text-color-secondary);
+  }
+
+  .graph-card,
+  .side-card {
+    background: var(--el-bg-color);
+    border-color: var(--el-border-color-lighter);
+  }
+
+  .legend,
+  .side-stat .label,
+  .relation-count,
+  .top-degree,
+  .legend-tip {
+    color: var(--el-text-color-secondary);
+  }
+
+  .side-stat .value {
+    color: var(--el-text-color-primary);
+  }
+
+  .top-item:hover {
+    background: var(--el-fill-color-light);
+  }
+}
+</style>
diff --git a/backend/src/views/apps/oa/document/documentlibrary/components/docDetailDrawer.vue b/backend/src/views/apps/oa/document/documentlibrary/components/docDetailDrawer.vue
new file mode 100644
index 0000000..b0beb68
--- /dev/null
+++ b/backend/src/views/apps/oa/document/documentlibrary/components/docDetailDrawer.vue
@@ -0,0 +1,563 @@
+<template>
+  <el-drawer
+    v-model="visible"
+    :title="detail?.title || '文档详情'"
+    size="560px"
+    @closed="handleClosed"
+  >
+    <div v-loading="loading" class="doc-detail">
+      <template v-if="detail">
+        <div class="detail-tags">
+          <el-tag :color="docTypeColor(detail.doc_type)" effect="dark" size="small">
+            {{ docTypeLabel(detail.doc_type) }}
+          </el-tag>
+          <el-tag :type="docStatusTagType(detail.status)" size="small">
+            {{ docStatusLabel(detail.status) }}
+          </el-tag>
+          <el-tag v-if="detail.is_star === 1" type="warning" size="small" effect="plain">
+            已收藏
+          </el-tag>
+          <el-tag
+            v-if="detail.visibility === 1"
+            type="danger"
+            size="small"
+            effect="plain"
+          >
+            私密
+          </el-tag>
+          <el-tag type="info" size="small" effect="plain">
+            v{{ detail.version || 1 }}
+          </el-tag>
+        </div>
+
+        <el-descriptions :column="2" border size="small" class="detail-desc">
+          <el-descriptions-item label="所属分类">
+            {{ categoryName(detail.category_id) }}
+          </el-descriptions-item>
+          <el-descriptions-item label="负责人">
+            {{ detail.owner_name || "-" }}
+          </el-descriptions-item>
+          <el-descriptions-item label="创建人">
+            {{ detail.creator_name || "-" }}
+          </el-descriptions-item>
+          <el-descriptions-item label="文件大小">
+            {{ formatFileSize(detail.size) }}
+          </el-descriptions-item>
+          <el-descriptions-item label="查看 / 下载">
+            {{ detail.view_count || 0 }} / {{ detail.download_count || 0 }}
+          </el-descriptions-item>
+          <el-descriptions-item label="更新时间">
+            {{ formatDateTime(detail.update_time) }}
+          </el-descriptions-item>
+          <el-descriptions-item label="原始文件名" :span="2">
+            {{ detail.file_name || "-" }}
+          </el-descriptions-item>
+          <el-descriptions-item label="标签" :span="2">
+            <el-tag
+              v-for="t in parseTags(detail.tags)"
+              :key="t"
+              size="small"
+              effect="plain"
+              class="tag-item"
+              >{{ t }}</el-tag
+            >
+            <span v-if="!parseTags(detail.tags).length">-</span>
+          </el-descriptions-item>
+          <el-descriptions-item label="摘要" :span="2">
+            {{ detail.summary || "-" }}
+          </el-descriptions-item>
+        </el-descriptions>
+
+        <div class="detail-actions">
+          <el-button type="primary" :icon="View" @click="emit('preview', detail)"
+            >预览</el-button
+          >
+          <el-button :icon="Download" @click="emit('download', detail)"
+            >下载</el-button
+          >
+          <el-button :icon="Star" @click="handleStar">{{
+            detail.is_star === 1 ? "取消收藏" : "收藏"
+          }}</el-button>
+          <el-button :icon="Edit" @click="emit('edit', detail)">编辑</el-button>
+        </div>
+
+        <el-divider content-position="left">共享范围（私密文档）</el-divider>
+
+        <div v-if="detail.visibility === 1" class="share-panel">
+          <div class="share-list">
+            <el-tag
+              v-for="s in shares"
+              :key="s.id"
+              type="info"
+              effect="plain"
+              closable
+              @close="removeShare(s)"
+            >
+              {{ s.share_type === 1 ? "部门" : "用户" }}：{{
+                s.target_name || s.target_id
+              }}
+            </el-tag>
+            <span v-if="!shares.length" class="empty-tip">仅创建者本人可见</span>
+          </div>
+          <div class="share-add">
+            <el-select v-model="shareForm.type" style="width: 110px">
+              <el-option :value="0" label="用户" />
+              <el-option :value="1" label="部门" />
+            </el-select>
+            <el-select
+              v-if="shareForm.type === 0"
+              v-model="shareForm.target"
+              filterable
+              remote
+              reserve-keyword
+              :remote-method="searchMembers"
+              :loading="searchingMember"
+              placeholder="搜索用户"
+              style="flex: 1"
+            >
+              <el-option
+                v-for="m in memberOptions"
+                :key="m.uid"
+                :label="`${m.name || m.account}(${m.account})`"
+                :value="m.uid"
+              />
+            </el-select>
+            <el-tree-select
+              v-else
+              v-model="shareForm.target"
+              :data="orgTree"
+              :props="{ label: 'label', value: 'value', children: 'children' }"
+              value-key="value"
+              check-strictly
+              clearable
+              placeholder="选择部门"
+              style="flex: 1"
+            />
+            <el-button
+              type="primary"
+              :disabled="!shareForm.target"
+              @click="addShare"
+              >添加</el-button
+            >
+          </div>
+        </div>
+        <div v-else class="share-public-tip">
+          该文档为「租户公开」，本租户内所有成员均可访问。
+        </div>
+
+        <el-divider content-position="left">关联文档</el-divider>
+
+        <div class="link-add">
+          <el-select
+            v-model="linkForm.target_id"
+            filterable
+            remote
+            clearable
+            reserve-keyword
+            placeholder="搜索要关联的文档"
+            :remote-method="searchDocs"
+            :loading="searching"
+            style="flex: 1"
+          >
+            <el-option
+              v-for="d in docOptions"
+              :key="d.id"
+              :label="d.title"
+              :value="d.id"
+              :disabled="d.id === detail.id"
+            />
+          </el-select>
+          <el-select v-model="linkForm.relation" style="width: 110px">
+            <el-option
+              v-for="r in DOC_RELATION_OPTIONS"
+              :key="r.value"
+              :label="r.label"
+              :value="r.value"
+            />
+          </el-select>
+          <el-button type="primary" :icon="Connection" @click="handleAddLink"
+            >关联</el-button
+          >
+        </div>
+
+        <el-table :data="links" size="small" class="link-table">
+          <el-table-column label="关系" width="90">
+            <template #default="{ row }">
+              <el-tag size="small" effect="plain">{{ row.relation_cn }}</el-tag>
+            </template>
+          </el-table-column>
+          <el-table-column label="文档" min-width="180" show-overflow-tooltip>
+            <template #default="{ row }">
+              <span class="link-title" @click="openPeer(row)">{{ peer(row).title }}</span>
+            </template>
+          </el-table-column>
+          <el-table-column prop="remark" label="说明" min-width="100" show-overflow-tooltip />
+          <el-table-column label="操作" width="70" fixed="right">
+            <template #default="{ row }">
+              <el-button link type="danger" @click="handleDeleteLink(row)"
+                >解除</el-button
+              >
+            </template>
+          </el-table-column>
+          <template #empty>
+            <el-empty description="暂无关联文档" :image-size="60" />
+          </template>
+        </el-table>
+      </template>
+
+      <el-empty v-else-if="!loading" description="未选择文档" />
+    </div>
+  </el-drawer>
+</template>
+
+<script setup>
+import { ref, watch } from "vue";
+import { ElMessage, ElMessageBox } from "element-plus";
+import {
+  Connection,
+  Download,
+  Edit,
+  Star,
+  View
+} from "@element-plus/icons-vue";
+import {
+  createDocLink,
+  deleteDocLink,
+  getDocDetail,
+  getDocLinks,
+  getDocList,
+  getDocMembers,
+  getDocShares,
+  removeDocShare,
+  setDocShares,
+  toggleDocStar
+} from "@/api/oaDocument";
+import { oaOrganizationApi } from "@/api/organization";
+import {
+  DOC_RELATION_OPTIONS,
+  docStatusLabel,
+  docStatusTagType,
+  docTypeColor,
+  docTypeLabel,
+  findCategory,
+  formatDateTime,
+  formatFileSize,
+  parseTags
+} from "../../utils";
+
+const props = defineProps({
+  modelValue: { type: Boolean, default: false },
+  docId: { type: [Number, String], default: 0 },
+  categories: { type: Array, default: () => [] }
+});
+
+const emit = defineEmits([
+  "update:modelValue",
+  "preview",
+  "download",
+  "edit",
+  "star-changed",
+  "open-doc",
+  "link-changed"
+]);
+
+const visible = ref(props.modelValue);
+const loading = ref(false);
+const detail = ref(null);
+const links = ref([]);
+
+const searching = ref(false);
+const docOptions = ref([]);
+const linkForm = ref({ target_id: null, relation: "related" });
+
+// 共享范围
+const shares = ref([]);
+const shareForm = ref({ type: 0, target: null });
+const memberOptions = ref([]);
+const searchingMember = ref(false);
+const orgTree = ref([]);
+
+// 组织机构树（部门选择用），平铺结构转树
+const buildOrgTree = (list) => {
+  const nodes = (list || []).map((o) => ({
+    value: Number(o.id),
+    label: o.org_name || o.name || `部门${o.id}`,
+    parent_id: Number(o.parent_id || 0)
+  }));
+  const map = new Map();
+  nodes.forEach((n) => map.set(n.value, { ...n, children: [] }));
+  const tree = [];
+  map.forEach((node) => {
+    const parent = map.get(node.parent_id);
+    if (parent) parent.children.push(node);
+    else tree.push(node);
+  });
+  return tree;
+};
+
+const loadOrgTree = async () => {
+  try {
+    const res = await oaOrganizationApi.getOrganizationTree();
+    if (res?.code === 200) {
+      const list = res?.data?.list || res?.data || [];
+      orgTree.value = buildOrgTree(list);
+    }
+  } catch {
+    orgTree.value = [];
+  }
+};
+
+const loadShares = async (docId) => {
+  const res = await getDocShares(docId);
+  shares.value = res?.code === 200 ? res.data || [] : [];
+};
+
+async function searchMembers(keyword) {
+  searchingMember.value = true;
+  try {
+    const res = await getDocMembers({ keyword, limit: 50 });
+    memberOptions.value = res?.code === 200 ? res.data || [] : [];
+  } finally {
+    searchingMember.value = false;
+  }
+}
+
+async function addShare() {
+  if (!shareForm.value.target) return;
+  // 全量替换：保留现有共享 + 新增一条
+  const items = shares.value.map((s) => ({
+    share_type: s.share_type,
+    target_id: s.target_id
+  }));
+  items.push({ share_type: shareForm.value.type, target_id: shareForm.value.target });
+  const res = await setDocShares(detail.value.id, items);
+  if (res?.code === 200) {
+    shares.value = res.data || [];
+    shareForm.value.target = null;
+    ElMessage.success("已添加共享");
+  } else {
+    ElMessage.error(res?.msg || "操作失败");
+  }
+}
+
+async function removeShare(s) {
+  const res = await removeDocShare(s.id);
+  if (res?.code === 200) {
+    shares.value = shares.value.filter((x) => x.id !== s.id);
+    ElMessage.success("已移除共享");
+  } else {
+    ElMessage.error(res?.msg || "操作失败");
+  }
+}
+
+watch(
+  () => props.modelValue,
+  val => {
+    visible.value = val;
+    if (val && props.docId) {
+      loadDetail(props.docId);
+    }
+  }
+);
+
+watch(visible, val => emit("update:modelValue", val));
+
+watch(
+  () => props.docId,
+  id => {
+    if (visible.value && id) {
+      loadDetail(id);
+    }
+  }
+);
+
+async function loadDetail(id) {
+  loading.value = true;
+  try {
+    const [detailRes, linkRes] = await Promise.all([
+      getDocDetail(id),
+      getDocLinks({ doc_id: id })
+    ]);
+    if (detailRes?.code === 200) {
+      detail.value = detailRes.data;
+    } else {
+      ElMessage.error(detailRes?.msg || "加载文档失败");
+    }
+    links.value = linkRes?.code === 200 ? linkRes.data || [] : [];
+    loadShares(id);
+  } finally {
+    loading.value = false;
+  }
+}
+
+function categoryName(id) {
+  if (!id) return "未分类";
+  return findCategory(props.categories, id)?.name || "未分类";
+}
+
+function peer(row) {
+  if (!detail.value) return { id: 0, title: "-" };
+  if (row.source_id === detail.value.id) {
+    return { id: row.target_id, title: row.target_title || `文档#${row.target_id}` };
+  }
+  return { id: row.source_id, title: row.source_title || `文档#${row.source_id}` };
+}
+
+function openPeer(row) {
+  const p = peer(row);
+  if (p.id) emit("open-doc", p.id);
+}
+
+async function searchDocs(keyword) {
+  searching.value = true;
+  try {
+    const res = await getDocList({ keyword, pageSize: 20, page: 1 });
+    docOptions.value = res?.code === 200 ? res.data?.list || [] : [];
+  } finally {
+    searching.value = false;
+  }
+}
+
+async function handleAddLink() {
+  if (!linkForm.value.target_id) {
+    ElMessage.warning("请选择要关联的文档");
+    return;
+  }
+  const res = await createDocLink({
+    source_id: detail.value.id,
+    target_id: linkForm.value.target_id,
+    relation: linkForm.value.relation,
+    remark: ""
+  });
+  if (res?.code === 200) {
+    ElMessage.success("已建立关联");
+    linkForm.value.target_id = null;
+    await refreshLinks();
+    emit("link-changed");
+  } else {
+    ElMessage.error(res?.msg || "关联失败");
+  }
+}
+
+async function refreshLinks() {
+  if (!detail.value) return;
+  const res = await getDocLinks({ doc_id: detail.value.id });
+  links.value = res?.code === 200 ? res.data || [] : [];
+}
+
+async function handleDeleteLink(row) {
+  try {
+    await ElMessageBox.confirm("确定解除该关联关系吗？", "提示", {
+      type: "warning",
+      confirmButtonText: "解除",
+      cancelButtonText: "取消"
+    });
+  } catch {
+    return;
+  }
+  const res = await deleteDocLink(row.id);
+  if (res?.code === 200) {
+    ElMessage.success("已解除关联");
+    await refreshLinks();
+    emit("link-changed");
+  } else {
+    ElMessage.error(res?.msg || "操作失败");
+  }
+}
+
+async function handleStar() {
+  const res = await toggleDocStar(detail.value.id);
+  if (res?.code === 200) {
+    detail.value.is_star = res.data?.is_star;
+    ElMessage.success(res.data?.is_star === 1 ? "已收藏" : "已取消收藏");
+    emit("star-changed");
+  } else {
+    ElMessage.error(res?.msg || "操作失败");
+  }
+}
+
+function handleClosed() {
+  detail.value = null;
+  links.value = [];
+  docOptions.value = [];
+  linkForm.value = { target_id: null, relation: "related" };
+}
+
+defineExpose({ reload: () => detail.value && loadDetail(detail.value.id) });
+</script>
+
+<style lang="less" scoped>
+.doc-detail {
+  padding: 0 4px;
+}
+
+.detail-tags {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  flex-wrap: wrap;
+  margin-bottom: 12px;
+}
+
+.detail-desc {
+  margin-bottom: 14px;
+}
+
+.tag-item {
+  margin-right: 6px;
+  margin-bottom: 4px;
+}
+
+.detail-actions {
+  display: flex;
+  gap: 8px;
+  flex-wrap: wrap;
+  margin-bottom: 6px;
+}
+
+.link-add {
+  display: flex;
+  gap: 8px;
+  margin-bottom: 12px;
+}
+
+.share-panel {
+  margin-bottom: 6px;
+}
+
+.share-list {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+  margin-bottom: 10px;
+}
+
+.share-list .empty-tip {
+  color: var(--el-text-color-secondary);
+  font-size: 13px;
+}
+
+.share-add {
+  display: flex;
+  gap: 8px;
+}
+
+.share-public-tip {
+  color: var(--el-text-color-secondary);
+  font-size: 13px;
+  margin-bottom: 6px;
+}
+
+.link-table {
+  width: 100%;
+}
+
+.link-title {
+  color: var(--el-color-primary);
+  cursor: pointer;
+}
+
+:deep(.el-descriptions__label) {
+  width: 90px;
+}
+</style>
diff --git a/backend/src/views/apps/oa/document/documentlibrary/components/editDialog.vue b/backend/src/views/apps/oa/document/documentlibrary/components/editDialog.vue
new file mode 100644
index 0000000..146ec45
--- /dev/null
+++ b/backend/src/views/apps/oa/document/documentlibrary/components/editDialog.vue
@@ -0,0 +1,162 @@
+<template>
+  <el-dialog v-model="visible" title="编辑文档" width="560px" @closed="handleClosed">
+    <el-form :model="form" label-width="90px">
+      <el-form-item label="文档标题" required>
+        <el-input v-model="form.title" maxlength="120" show-word-limit />
+      </el-form-item>
+      <el-form-item label="所属分类">
+        <el-tree-select
+          v-model="form.category_id"
+          :data="categories"
+          :props="{ label: 'name', children: 'children' }"
+          node-key="id"
+          check-strictly
+          clearable
+          placeholder="未分类"
+          style="width: 100%"
+        />
+      </el-form-item>
+      <el-form-item label="标签">
+        <el-select
+          v-model="form.tagList"
+          multiple
+          filterable
+          allow-create
+          default-first-option
+          style="width: 100%"
+        >
+          <el-option v-for="t in form.tagList" :key="t" :label="t" :value="t" />
+        </el-select>
+      </el-form-item>
+      <el-form-item label="状态">
+        <el-radio-group v-model="form.status">
+          <el-radio :value="0">草稿</el-radio>
+          <el-radio :value="1">已发布</el-radio>
+          <el-radio :value="2">已归档</el-radio>
+        </el-radio-group>
+      </el-form-item>
+      <el-form-item label="可见性">
+        <el-radio-group v-model="form.visibility">
+          <el-radio :value="0">租户公开</el-radio>
+          <el-radio :value="1">私密</el-radio>
+        </el-radio-group>
+        <div class="el-upload__tip">
+          私密文档仅本人及被共享的用户/部门可见；设为私密后可在详情中设置共享范围。
+        </div>
+      </el-form-item>
+      <el-form-item label="版本号">
+        <el-input-number v-model="form.version" :min="1" :max="999" />
+      </el-form-item>
+      <el-form-item label="负责人">
+        <el-input v-model="form.owner_name" maxlength="50" />
+      </el-form-item>
+      <el-form-item label="摘要">
+        <el-input
+          v-model="form.summary"
+          type="textarea"
+          :rows="3"
+          maxlength="500"
+          show-word-limit
+        />
+      </el-form-item>
+    </el-form>
+
+    <template #footer>
+      <el-button @click="visible = false">取消</el-button>
+      <el-button type="primary" :loading="submitting" @click="handleSubmit"
+        >保存</el-button
+      >
+    </template>
+  </el-dialog>
+</template>
+
+<script setup>
+import { ref, watch } from "vue";
+import { ElMessage } from "element-plus";
+import { updateDoc } from "@/api/oaDocument";
+import { parseTags } from "../../utils";
+
+const props = defineProps({
+  modelValue: { type: Boolean, default: false },
+  doc: { type: Object, default: null },
+  categories: { type: Array, default: () => [] }
+});
+
+const emit = defineEmits(["update:modelValue", "saved"]);
+
+const visible = ref(false);
+const submitting = ref(false);
+const form = ref({
+  title: "",
+  category_id: 0,
+  tagList: [],
+  status: 0,
+  visibility: 0,
+  version: 1,
+  owner_name: "",
+  summary: ""
+});
+
+watch(
+  () => props.modelValue,
+  val => {
+    visible.value = val;
+    if (val && props.doc) {
+      form.value = {
+        title: props.doc.title || "",
+        category_id: props.doc.category_id || 0,
+        tagList: parseTags(props.doc.tags),
+        status: props.doc.status ?? 0,
+        visibility: props.doc.visibility ?? 0,
+        version: props.doc.version || 1,
+        owner_name: props.doc.owner_name || "",
+        summary: props.doc.summary || ""
+      };
+    }
+  }
+);
+
+watch(visible, val => emit("update:modelValue", val));
+
+async function handleSubmit() {
+  if (!form.value.title?.trim()) {
+    ElMessage.warning("请输入文档标题");
+    return;
+  }
+  submitting.value = true;
+  try {
+    const res = await updateDoc(props.doc.id, {
+      title: form.value.title.trim(),
+      category_id: form.value.category_id || 0,
+      tags: form.value.tagList.join(","),
+      status: form.value.status,
+      visibility: form.value.visibility || 0,
+      version: form.value.version,
+      owner_name: form.value.owner_name,
+      summary: form.value.summary
+    });
+    if (res?.code === 200) {
+      ElMessage.success("保存成功");
+      visible.value = false;
+      emit("saved");
+    } else {
+      ElMessage.error(res?.msg || "保存失败");
+    }
+  } finally {
+    submitting.value = false;
+  }
+}
+
+function handleClosed() {
+  form.value = {
+    title: "",
+    category_id: 0,
+    tagList: [],
+    status: 0,
+    visibility: 0,
+    version: 1,
+    owner_name: "",
+    summary: ""
+  };
+}
+</script>
diff --git a/backend/src/views/apps/oa/document/documentlibrary/components/index.vue b/backend/src/views/apps/oa/document/documentlibrary/components/index.vue
deleted file mode 100644
index e69de29..0000000
diff --git a/backend/src/views/apps/oa/document/documentlibrary/components/uploadDialog.vue b/backend/src/views/apps/oa/document/documentlibrary/components/uploadDialog.vue
new file mode 100644
index 0000000..bb6c680
--- /dev/null
+++ b/backend/src/views/apps/oa/document/documentlibrary/components/uploadDialog.vue
@@ -0,0 +1,285 @@
+<template>
+  <el-dialog
+    v-model="visible"
+    title="上传文档"
+    width="620px"
+    :close-on-click-modal="false"
+    @closed="handleClosed"
+  >
+    <el-form :model="form" label-width="90px">
+      <el-form-item label="文件" required>
+        <el-upload
+          ref="uploadRef"
+          drag
+          :auto-upload="false"
+          :limit="1"
+          :file-list="fileList"
+          :on-change="handleFileChange"
+          :on-remove="handleFileRemove"
+          :on-exceed="handleExceed"
+          accept=".pdf,.doc,.docx,.xls,.xlsx,.ppt,.pptx,.txt,.md,.csv,.zip,.rar,.7z,.jpg,.jpeg,.png,.gif,.webp,.mp4,.mp3"
+        >
+          <el-icon class="el-icon--upload"><UploadFilled /></el-icon>
+          <div class="el-upload__text">将文件拖到此处，或<em>点击选择</em></div>
+          <template #tip>
+            <div class="el-upload__tip">
+              支持 PDF / Office / 图片 / 压缩包等，单个文件不超过 200MB
+            </div>
+          </template>
+        </el-upload>
+        <el-progress
+          v-if="uploading"
+          :percentage="uploadPercent"
+          :stroke-width="14"
+          striped
+          style="margin-top: 10px"
+        />
+      </el-form-item>
+
+      <el-form-item label="文档标题">
+        <el-input
+          v-model="form.title"
+          maxlength="120"
+          show-word-limit
+          placeholder="留空则使用文件名"
+        />
+      </el-form-item>
+
+      <el-form-item label="所属分类">
+        <el-tree-select
+          v-model="form.category_id"
+          :data="categoryTree"
+          :props="treeProps"
+          node-key="id"
+          check-strictly
+          clearable
+          placeholder="未分类"
+          style="width: 100%"
+        />
+      </el-form-item>
+
+      <el-form-item label="标签">
+        <el-select
+          v-model="form.tagList"
+          multiple
+          filterable
+          allow-create
+          default-first-option
+          placeholder="输入后回车可新建标签"
+          style="width: 100%"
+        >
+          <el-option v-for="t in presetTags" :key="t" :label="t" :value="t" />
+        </el-select>
+      </el-form-item>
+
+      <el-form-item label="状态">
+        <el-radio-group v-model="form.status">
+          <el-radio :value="0">草稿</el-radio>
+          <el-radio :value="1">已发布</el-radio>
+          <el-radio :value="2">已归档</el-radio>
+        </el-radio-group>
+      </el-form-item>
+
+      <el-form-item label="可见性">
+        <el-radio-group v-model="form.visibility">
+          <el-radio :value="0">租户公开</el-radio>
+          <el-radio :value="1">私密</el-radio>
+        </el-radio-group>
+        <div class="el-upload__tip">
+          私密文档仅本人及被共享的用户/部门可见；设为私密后可在详情中设置共享范围。
+        </div>
+      </el-form-item>
+
+      <el-form-item label="负责人">
+        <el-input
+          v-model="form.owner_name"
+          maxlength="50"
+          placeholder="选填，默认当前操作人"
+        />
+      </el-form-item>
+
+      <el-form-item label="摘要">
+        <el-input
+          v-model="form.summary"
+          type="textarea"
+          :rows="3"
+          maxlength="500"
+          show-word-limit
+          placeholder="选填，简要描述文档内容"
+        />
+      </el-form-item>
+    </el-form>
+
+    <template #footer>
+      <el-button @click="visible = false">取消</el-button>
+      <el-button
+        type="primary"
+        :loading="submitting"
+        :disabled="uploading"
+        @click="handleSubmit"
+        >保存</el-button
+      >
+    </template>
+  </el-dialog>
+</template>
+
+<script setup>
+import { computed, ref, watch } from "vue";
+import { ElMessage } from "element-plus";
+import { UploadFilled } from "@element-plus/icons-vue";
+import { uploadFile } from "@/api/file";
+import { createDoc } from "@/api/oaDocument";
+
+const props = defineProps({
+  modelValue: { type: Boolean, default: false },
+  categories: { type: Array, default: () => [] },
+  defaultCategoryId: { type: Number, default: 0 },
+  currentUserName: { type: String, default: "" }
+});
+
+const emit = defineEmits(["update:modelValue", "saved"]);
+
+const treeProps = { label: "name", children: "children" };
+const presetTags = ["制度", "流程", "模板", "合同", "培训", "报表", "归档"];
+
+const visible = ref(props.modelValue);
+const uploadRef = ref(null);
+const fileList = ref([]);
+const rawFile = ref(null);
+const uploading = ref(false);
+const uploadPercent = ref(0);
+const submitting = ref(false);
+
+const form = ref({
+  title: "",
+  category_id: 0,
+  tagList: [],
+  status: 1,
+  visibility: 0,
+  owner_name: "",
+  summary: ""
+});
+
+const categoryTree = computed(() => props.categories || []);
+
+watch(
+  () => props.modelValue,
+  val => {
+    visible.value = val;
+    if (val) {
+      form.value = {
+        title: "",
+        category_id: props.defaultCategoryId || 0,
+        tagList: [],
+        status: 1,
+        visibility: 0,
+        owner_name: props.currentUserName || "",
+        summary: ""
+      };
+      uploadPercent.value = 0;
+    }
+  }
+);
+
+watch(visible, val => emit("update:modelValue", val));
+
+function handleFileChange(file) {
+  rawFile.value = file.raw || file;
+  fileList.value = [file];
+  if (!form.value.title) {
+    form.value.title = String(file.name || "").replace(/\.[^.]+$/, "");
+  }
+}
+
+function handleFileRemove() {
+  rawFile.value = null;
+  fileList.value = [];
+}
+
+function handleExceed() {
+  ElMessage.warning("单次只能上传 1 个文件");
+}
+
+function buildFormData() {
+  const fd = new FormData();
+  fd.append("file", rawFile.value);
+  fd.append("cate", "0");
+  fd.append("scope", "tenant");
+  return fd;
+}
+
+async function handleSubmit() {
+  if (!rawFile.value) {
+    ElMessage.warning("请选择要上传的文件");
+    return;
+  }
+  if (rawFile.value.size > 200 * 1024 * 1024) {
+    ElMessage.warning("单个文件不能超过 200MB");
+    return;
+  }
+
+  submitting.value = true;
+  uploading.value = true;
+  uploadPercent.value = 0;
+  try {
+    const upRes = await uploadFile(buildFormData(), {
+      onUploadProgress: e => {
+        if (!e?.total) return;
+        uploadPercent.value = Math.min(
+          99,
+          Math.round((e.loaded * 100) / e.total)
+        );
+      }
+    });
+    // 秒传命中时返回 code=201，同样携带 url/id/name
+    const upData = upRes?.data || {};
+    if (upRes?.code !== 200 && upRes?.code !== 201) {
+      ElMessage.error(upRes?.msg || "文件上传失败");
+      return;
+    }
+    uploadPercent.value = 100;
+
+    const name = upData.name || rawFile.value.name || "";
+    const ext = name.includes(".") ? name.split(".").pop() : "";
+    const res = await createDoc({
+      title: form.value.title?.trim() || name.replace(/\.[^.]+$/, ""),
+      category_id: form.value.category_id || 0,
+      file_id: upData.id || 0,
+      file_url: upData.url || "",
+      file_name: name,
+      ext,
+      size: rawFile.value.size || 0,
+      tags: form.value.tagList.join(","),
+      summary: form.value.summary || "",
+      status: form.value.status,
+      visibility: form.value.visibility || 0,
+      owner_name: form.value.owner_name || ""
+    });
+    if (res?.code === 200) {
+      ElMessage.success("上传成功");
+      visible.value = false;
+      emit("saved");
+    } else {
+      ElMessage.error(res?.msg || "保存失败");
+    }
+  } catch (err) {
+    ElMessage.error(err?.message || "上传失败");
+  } finally {
+    uploading.value = false;
+    submitting.value = false;
+  }
+}
+
+function handleClosed() {
+  rawFile.value = null;
+  fileList.value = [];
+  uploadPercent.value = 0;
+  uploadRef.value?.clearFiles?.();
+}
+</script>
+
+<style lang="less" scoped>
+:deep(.el-upload-dragger) {
+  padding: 18px 12px;
+}
+</style>
diff --git a/backend/src/views/apps/oa/document/documentlibrary/index.vue b/backend/src/views/apps/oa/document/documentlibrary/index.vue
new file mode 100644
index 0000000..882b9a0
--- /dev/null
+++ b/backend/src/views/apps/oa/document/documentlibrary/index.vue
@@ -0,0 +1,1062 @@
+<template>
+  <div class="doc-library-page">
+    <div class="page-header">
+      <div>
+        <h2>文档库</h2>
+        <p>按分类集中管理租户文档，支持上传、检索、预览、关联与归档</p>
+      </div>
+      <div class="header-actions">
+        <el-button :icon="Plus" @click="openCreateCategory()">新建分类</el-button>
+        <el-button type="primary" :icon="Upload" @click="uploadVisible = true"
+          >上传文档</el-button
+        >
+      </div>
+    </div>
+
+    <!-- 概览 -->
+    <div class="stats-row">
+      <div class="stat-card">
+        <span class="stat-label">文档总数</span>
+        <span class="stat-value">{{ stats.total || 0 }}</span>
+      </div>
+      <div class="stat-card">
+        <span class="stat-label">已发布</span>
+        <span class="stat-value success">{{ stats.published || 0 }}</span>
+      </div>
+      <div class="stat-card">
+        <span class="stat-label">草稿 / 归档</span>
+        <span class="stat-value warning"
+          >{{ stats.draft || 0 }} / {{ stats.archived || 0 }}</span
+        >
+      </div>
+      <div class="stat-card">
+        <span class="stat-label">关联关系</span>
+        <span class="stat-value primary">{{ stats.link_count || 0 }}</span>
+      </div>
+      <div class="stat-card">
+        <span class="stat-label">我的收藏</span>
+        <span class="stat-value danger">{{ stats.starred || 0 }}</span>
+      </div>
+    </div>
+
+    <div class="main-layout">
+      <!-- 左侧：分类树 -->
+      <div class="category-pane">
+        <div class="pane-header">
+          <span>文档分类</span>
+          <el-button link type="primary" :icon="Plus" @click="openCreateCategory(0)" />
+        </div>
+
+        <el-input
+          v-model="categoryKeyword"
+          placeholder="搜索分类"
+          clearable
+          size="small"
+        />
+
+        <div class="quick-list">
+          <div
+            class="quick-item"
+            :class="{ active: activeCategoryId === 0 && !uncategorized }"
+            @click="selectQuick(0)"
+          >
+            <el-icon><Files /></el-icon>
+            <span>全部文档</span>
+            <span class="count">{{ stats.total || 0 }}</span>
+          </div>
+          <div
+            class="quick-item"
+            :class="{ active: uncategorized }"
+            @click="selectQuick(-1)"
+          >
+            <el-icon><FolderOpened /></el-icon>
+            <span>未分类</span>
+            <span class="count">{{ uncategorizedCount }}</span>
+          </div>
+        </div>
+
+        <el-scrollbar class="tree-scroll">
+          <el-tree
+            ref="treeRef"
+            :data="categoryTree"
+            :props="{ label: 'name', children: 'children' }"
+            node-key="id"
+            :default-expanded-keys="expandedKeys"
+            :filter-node-method="filterCategory"
+            :expand-on-click-node="false"
+            highlight-current
+            @node-click="handleNodeClick"
+          >
+            <template #default="{ data }">
+              <div class="tree-node">
+                <span class="node-name" :title="data.name">{{ data.name }}</span>
+                <span class="node-count">{{ data.doc_count || 0 }}</span>
+                <span class="node-actions" @click.stop>
+                  <el-button
+                    link
+                    size="small"
+                    :icon="Plus"
+                    title="新建子分类"
+                    @click="openCreateCategory(data.id)"
+                  />
+                  <el-button
+                    link
+                    size="small"
+                    :icon="EditPen"
+                    title="重命名"
+                    @click="openRenameCategory(data)"
+                  />
+                  <el-button
+                    link
+                    size="small"
+                    type="danger"
+                    :icon="Delete"
+                    title="删除"
+                    @click="handleDeleteCategory(data)"
+                  />
+                </span>
+              </div>
+            </template>
+          </el-tree>
+        </el-scrollbar>
+      </div>
+
+      <!-- 右侧：文档列表 -->
+      <div class="doc-pane">
+        <div class="filter-bar">
+          <el-input
+            v-model="filters.keyword"
+            clearable
+            placeholder="搜索标题 / 文件名 / 标签 / 负责人"
+            style="width: 250px"
+            @keyup.enter="handleSearch"
+          />
+          <el-select
+            v-model="filters.status"
+            clearable
+            placeholder="全部状态"
+            style="width: 120px"
+          >
+            <el-option
+              v-for="s in DOC_STATUS_OPTIONS"
+              :key="s.value"
+              :label="s.label"
+              :value="s.value"
+            />
+          </el-select>
+          <el-select
+            v-model="filters.doc_type"
+            clearable
+            placeholder="全部类型"
+            style="width: 120px"
+          >
+            <el-option
+              v-for="t in DOC_TYPE_OPTIONS"
+              :key="t.value"
+              :label="t.label"
+              :value="t.value"
+            />
+          </el-select>
+          <el-input
+            v-model="filters.tag"
+            clearable
+            placeholder="标签"
+            style="width: 130px"
+            @keyup.enter="handleSearch"
+          />
+          <el-checkbox v-model="filters.star" :true-value="1" :false-value="0"
+            >仅看收藏</el-checkbox
+          >
+          <el-button type="primary" :icon="Search" @click="handleSearch">查询</el-button>
+          <el-button :icon="Refresh" @click="resetFilters">重置</el-button>
+        </div>
+
+        <div class="toolbar">
+          <span class="toolbar-title">
+            {{ currentCategoryName }}
+            <span class="toolbar-sub">共 {{ pagination.total }} 篇</span>
+          </span>
+          <div class="toolbar-right">
+            <template v-if="selection.length">
+              <el-button size="small" :icon="Promotion" @click="moveVisible = true"
+                >移动({{ selection.length }})</el-button
+              >
+              <el-button
+                size="small"
+                type="danger"
+                :icon="Delete"
+                @click="handleBatchDelete"
+                >删除({{ selection.length }})</el-button
+              >
+            </template>
+            <el-button size="small" :icon="Refresh" @click="loadData">刷新</el-button>
+          </div>
+        </div>
+
+        <el-table
+          v-loading="loading"
+          :data="list"
+          stripe
+          row-key="id"
+          @selection-change="onSelectionChange"
+          @row-dblclick="openDetail"
+        >
+          <el-table-column type="selection" width="46" />
+          <el-table-column label="文档" min-width="280" show-overflow-tooltip>
+            <template #default="{ row }">
+              <div class="doc-cell">
+                <el-icon
+                  class="doc-icon"
+                  :style="{ color: docTypeColor(row.doc_type) }"
+                >
+                  <component :is="typeIcon(row.doc_type)" />
+                </el-icon>
+                <span class="doc-title" @click="openDetail(row)">{{ row.title }}</span>
+                <el-icon v-if="row.is_star === 1" class="star-icon"><StarFilled /></el-icon>
+              </div>
+            </template>
+          </el-table-column>
+          <el-table-column label="类型" width="90">
+            <template #default="{ row }">
+              <el-tag size="small" effect="plain">{{
+                docTypeLabel(row.doc_type)
+              }}</el-tag>
+            </template>
+          </el-table-column>
+          <el-table-column label="可见性" width="80">
+            <template #default="{ row }">
+              <el-tag v-if="row.visibility === 1" type="danger" size="small" effect="plain">
+                私密
+              </el-tag>
+              <el-tag v-else type="success" size="small" effect="plain">公开</el-tag>
+            </template>
+          </el-table-column>
+          <el-table-column label="状态" width="90">
+            <template #default="{ row }">
+              <el-tag :type="docStatusTagType(row.status)" size="small">{{
+                docStatusLabel(row.status)
+              }}</el-tag>
+            </template>
+          </el-table-column>
+          <el-table-column label="分类" width="120" show-overflow-tooltip>
+            <template #default="{ row }">{{ categoryName(row.category_id) }}</template>
+          </el-table-column>
+          <el-table-column label="标签" min-width="130" show-overflow-tooltip>
+            <template #default="{ row }">
+              <template v-if="parseTags(row.tags).length">
+                <el-tag
+                  v-for="t in parseTags(row.tags).slice(0, 2)"
+                  :key="t"
+                  size="small"
+                  effect="plain"
+                  class="tag-item"
+                  >{{ t }}</el-tag
+                >
+              </template>
+              <span v-else class="muted">-</span>
+            </template>
+          </el-table-column>
+          <el-table-column prop="owner_name" label="负责人" width="100" />
+          <el-table-column label="大小" width="90">
+            <template #default="{ row }">{{ formatFileSize(row.size) }}</template>
+          </el-table-column>
+          <el-table-column label="查看" width="80" prop="view_count" />
+          <el-table-column label="更新时间" width="150">
+            <template #default="{ row }">{{
+              formatDateTime(row.update_time)
+            }}</template>
+          </el-table-column>
+          <el-table-column label="操作" width="230" fixed="right">
+            <template #default="{ row }">
+              <el-button link type="primary" @click="openDetail(row)">详情</el-button>
+              <el-button link type="primary" @click="handlePreview(row)">预览</el-button>
+              <el-button link type="primary" @click="handleDownload(row)">下载</el-button>
+              <el-button link type="primary" @click="handleStar(row)">{{
+                row.is_star === 1 ? "取消收藏" : "收藏"
+              }}</el-button>
+              <el-button link type="danger" @click="handleDelete(row)">删除</el-button>
+            </template>
+          </el-table-column>
+          <template #empty><el-empty description="暂无文档" /></template>
+        </el-table>
+
+        <div class="pagination">
+          <el-pagination
+            v-model:current-page="pagination.page"
+            v-model:page-size="pagination.pageSize"
+            :total="pagination.total"
+            layout="total, sizes, prev, pager, next, jumper"
+            @current-change="loadList"
+            @size-change="handleSizeChange"
+          />
+        </div>
+      </div>
+    </div>
+
+    <!-- 上传 -->
+    <UploadDialog
+      v-model="uploadVisible"
+      :categories="categoryTree"
+      :default-category-id="activeCategoryId > 0 ? activeCategoryId : 0"
+      :current-user-name="currentUserName"
+      @saved="onDataChanged"
+    />
+
+    <!-- 编辑 -->
+    <EditDialog
+      v-model="editVisible"
+      :doc="editingDoc"
+      :categories="categoryTree"
+      @saved="onDataChanged"
+    />
+
+    <!-- 详情抽屉 -->
+    <DocDetailDrawer
+      v-model="detailVisible"
+      :doc-id="detailId"
+      :categories="categoryTree"
+      @preview="handlePreview"
+      @download="handleDownload"
+      @edit="openEdit"
+      @open-doc="openDetailById"
+      @star-changed="loadList"
+      @link-changed="loadStats"
+    />
+
+    <!-- 批量移动 -->
+    <el-dialog v-model="moveVisible" title="移动文档到" width="420px">
+      <el-tree-select
+        v-model="moveTargetId"
+        :data="categoryTree"
+        :props="{ label: 'name', children: 'children' }"
+        node-key="id"
+        check-strictly
+        clearable
+        placeholder="未分类"
+        style="width: 100%"
+      />
+      <template #footer>
+        <el-button @click="moveVisible = false">取消</el-button>
+        <el-button type="primary" :loading="moving" @click="submitMove">确定</el-button>
+      </template>
+    </el-dialog>
+
+    <!-- 图片预览 -->
+    <el-dialog v-model="previewVisible" :title="previewRow?.title" width="70%">
+      <div class="preview-body">
+        <el-image
+          v-if="previewRow && isImageDoc(previewRow)"
+          :src="getFileUrl(previewRow.file_url)"
+          fit="contain"
+          :preview-src-list="[getFileUrl(previewRow.file_url)]"
+          class="preview-image"
+        />
+        <iframe
+          v-else-if="previewRow"
+          :src="getFileUrl(previewRow.file_url)"
+          class="preview-frame"
+          frameborder="0"
+        />
+      </div>
+    </el-dialog>
+  </div>
+</template>
+
+<script setup>
+import { computed, onMounted, reactive, ref, watch } from "vue";
+import { ElMessage, ElMessageBox } from "element-plus";
+import {
+  Delete,
+  Document,
+  EditPen,
+  Film,
+  Files,
+  FolderOpened,
+  Microphone,
+  Picture,
+  Plus,
+  Promotion,
+  Refresh,
+  Search,
+  StarFilled,
+  Upload,
+  VideoCamera
+} from "@element-plus/icons-vue";
+import { useAuthStore } from "@/stores/auth";
+import UploadDialog from "./components/uploadDialog.vue";
+import EditDialog from "./components/editDialog.vue";
+import DocDetailDrawer from "./components/docDetailDrawer.vue";
+import {
+  batchDeleteDocs,
+  createDocCategory,
+  deleteDoc,
+  deleteDocCategory,
+  getDocCategories,
+  getDocList,
+  getDocStats,
+  moveDocs,
+  recordDocDownload,
+  toggleDocStar,
+  updateDocCategory
+} from "@/api/oaDocument";
+import {
+  DOC_STATUS_OPTIONS,
+  DOC_TYPE_OPTIONS,
+  docStatusLabel,
+  docStatusTagType,
+  docTypeColor,
+  docTypeLabel,
+  findCategory,
+  formatDateTime,
+  formatFileSize,
+  getFileUrl,
+  isImageDoc,
+  parseTags
+} from "../utils";
+
+const authStore = useAuthStore();
+const currentUserName = computed(() => authStore.user?.name || "");
+
+const categoryTree = ref([]);
+const categoryKeyword = ref("");
+const treeRef = ref(null);
+const expandedKeys = ref([]);
+
+const activeCategoryId = ref(0);
+const uncategorized = ref(false);
+
+const filters = reactive({
+  keyword: "",
+  status: "",
+  doc_type: "",
+  tag: "",
+  star: 0
+});
+
+const list = ref([]);
+const loading = ref(false);
+const pagination = reactive({ page: 1, pageSize: 20, total: 0 });
+const selection = ref([]);
+const stats = ref({});
+
+const uploadVisible = ref(false);
+const editVisible = ref(false);
+const editingDoc = ref(null);
+const detailVisible = ref(false);
+const detailId = ref(0);
+const moveVisible = ref(false);
+const moveTargetId = ref(null);
+const moving = ref(false);
+const previewVisible = ref(false);
+const previewRow = ref(null);
+
+const uncategorizedCount = computed(() => stats.value?.uncategorized || 0);
+const currentCategoryName = computed(() => {
+  if (uncategorized.value) return "未分类";
+  if (!activeCategoryId.value) return "全部文档";
+  return findCategory(categoryTree.value, activeCategoryId.value)?.name || "全部文档";
+});
+
+function categoryName(id) {
+  if (!id) return "未分类";
+  return findCategory(categoryTree.value, id)?.name || "未分类";
+}
+
+function typeIcon(docType) {
+  return (
+    {
+      1: Document,
+      2: Files,
+      3: Film,
+      4: Document,
+      5: Picture,
+      6: FolderOpened,
+      7: VideoCamera,
+      8: Microphone
+    }[Number(docType)] || Document
+  );
+}
+
+// ---------------- 数据加载 ----------------
+async function loadCategories() {
+  const res = await getDocCategories();
+  if (res?.code === 200) {
+    categoryTree.value = res.data || [];
+    expandedKeys.value = (res.data || []).map(c => c.id);
+  }
+}
+
+async function loadStats() {
+  const res = await getDocStats();
+  if (res?.code === 200) {
+    stats.value = res.data || {};
+  }
+}
+
+async function loadList() {
+  loading.value = true;
+  try {
+    const res = await getDocList({
+      page: pagination.page,
+      pageSize: pagination.pageSize,
+      keyword: filters.keyword || "",
+      status: filters.status === "" ? -1 : filters.status,
+      doc_type: filters.doc_type === "" ? -1 : filters.doc_type,
+      tag: filters.tag || "",
+      star: filters.star ? 1 : -1,
+      category_id: uncategorized.value ? 0 : activeCategoryId.value,
+      uncategorized: uncategorized.value ? 1 : 0
+    });
+    if (res?.code === 200) {
+      list.value = res.data?.list || [];
+      pagination.total = res.data?.total || 0;
+    } else {
+      ElMessage.error(res?.msg || "加载失败");
+    }
+  } finally {
+    loading.value = false;
+  }
+}
+
+function loadData() {
+  loadList();
+  loadStats();
+  loadCategories();
+}
+
+function onDataChanged() {
+  loadList();
+  loadStats();
+  loadCategories();
+}
+
+// ---------------- 分类 ----------------
+function filterCategory(value, data) {
+  if (!value) return true;
+  return String(data.name || "").toLowerCase().includes(String(value).toLowerCase());
+}
+
+watch(categoryKeyword, val => treeRef.value?.filter(val));
+
+function handleNodeClick(data) {
+  uncategorized.value = false;
+  activeCategoryId.value = data.id;
+  pagination.page = 1;
+  loadList();
+}
+
+function selectQuick(id) {
+  uncategorized.value = id === -1;
+  activeCategoryId.value = id === -1 ? 0 : 0;
+  pagination.page = 1;
+  loadList();
+}
+
+async function openCreateCategory(parentId = 0) {
+  try {
+    const { value } = await ElMessageBox.prompt("请输入分类名称", "新建分类", {
+      confirmButtonText: "确定",
+      cancelButtonText: "取消",
+      inputPattern: /\S+/,
+      inputErrorMessage: "分类名称不能为空"
+    });
+    const res = await createDocCategory({
+      parent_id: parentId || 0,
+      name: String(value || "").trim(),
+      sort: 0
+    });
+    if (res?.code === 200) {
+      ElMessage.success("已创建分类");
+      loadCategories();
+    } else {
+      ElMessage.error(res?.msg || "创建失败");
+    }
+  } catch (e) {
+    if (e !== "cancel" && e?.message && !String(e.message).includes("cancel")) {
+      // ElMessageBox 取消时会 reject，忽略
+    }
+  }
+}
+
+async function openRenameCategory(data) {
+  try {
+    const { value } = await ElMessageBox.prompt("请输入新的分类名称", "重命名", {
+      confirmButtonText: "确定",
+      cancelButtonText: "取消",
+      inputValue: data.name,
+      inputPattern: /\S+/,
+      inputErrorMessage: "分类名称不能为空"
+    });
+    const res = await updateDocCategory(data.id, { name: String(value || "").trim() });
+    if (res?.code === 200) {
+      ElMessage.success("已更新");
+      loadCategories();
+      loadList();
+    } else {
+      ElMessage.error(res?.msg || "更新失败");
+    }
+  } catch {
+    /* 取消 */
+  }
+}
+
+async function handleDeleteCategory(data) {
+  try {
+    await ElMessageBox.confirm(
+      `确定删除分类「${data.name}」吗？`,
+      "删除确认",
+      { type: "warning", confirmButtonText: "删除", cancelButtonText: "取消" }
+    );
+  } catch {
+    return;
+  }
+  const res = await deleteDocCategory(data.id);
+  if (res?.code === 200) {
+    ElMessage.success("已删除");
+    if (activeCategoryId.value === data.id) {
+      activeCategoryId.value = 0;
+    }
+    loadCategories();
+    loadList();
+  } else {
+    ElMessage.error(res?.msg || "删除失败");
+  }
+}
+
+// ---------------- 列表操作 ----------------
+function handleSearch() {
+  pagination.page = 1;
+  loadList();
+}
+
+function handleSizeChange() {
+  pagination.page = 1;
+  loadList();
+}
+
+function resetFilters() {
+  filters.keyword = "";
+  filters.status = "";
+  filters.doc_type = "";
+  filters.tag = "";
+  filters.star = 0;
+  pagination.page = 1;
+  loadList();
+}
+
+function onSelectionChange(rows) {
+  selection.value = rows;
+}
+
+function openDetail(row) {
+  detailId.value = row.id;
+  detailVisible.value = true;
+}
+
+function openDetailById(id) {
+  detailId.value = id;
+  detailVisible.value = true;
+}
+
+function openEdit(doc) {
+  editingDoc.value = doc;
+  editVisible.value = true;
+}
+
+async function handleStar(row) {
+  const res = await toggleDocStar(row.id);
+  if (res?.code === 200) {
+    row.is_star = res.data?.is_star;
+    ElMessage.success(res.data?.is_star === 1 ? "已收藏" : "已取消收藏");
+    loadStats();
+  } else {
+    ElMessage.error(res?.msg || "操作失败");
+  }
+}
+
+function handlePreview(row) {
+  previewRow.value = row;
+  previewVisible.value = true;
+  if (!isImageDoc(row) && !String(row.ext).toLowerCase().includes("pdf")) {
+    window.open(getFileUrl(row.file_url), "_blank");
+    previewVisible.value = false;
+  }
+}
+
+async function handleDownload(row) {
+  if (!row.file_url) {
+    ElMessage.warning("该文档没有附件");
+    return;
+  }
+  try {
+    await recordDocDownload(row.id);
+    row.download_count = (row.download_count || 0) + 1;
+  } catch {
+    /* 计数失败不影响下载 */
+  }
+  const link = document.createElement("a");
+  link.href = getFileUrl(row.file_url);
+  link.download = row.file_name || row.title || "";
+  link.target = "_blank";
+  document.body.appendChild(link);
+  link.click();
+  document.body.removeChild(link);
+}
+
+async function handleDelete(row) {
+  try {
+    await ElMessageBox.confirm(`确定删除文档「${row.title}」吗？`, "删除确认", {
+      type: "warning",
+      confirmButtonText: "删除",
+      cancelButtonText: "取消"
+    });
+  } catch {
+    return;
+  }
+  const res = await deleteDoc(row.id);
+  if (res?.code === 200) {
+    ElMessage.success("已删除");
+    loadList();
+    loadStats();
+    loadCategories();
+  } else {
+    ElMessage.error(res?.msg || "删除失败");
+  }
+}
+
+async function handleBatchDelete() {
+  const ids = selection.value.map(r => r.id);
+  if (!ids.length) return;
+  try {
+    await ElMessageBox.confirm(`确定删除选中的 ${ids.length} 个文档吗？`, "删除确认", {
+      type: "warning",
+      confirmButtonText: "删除",
+      cancelButtonText: "取消"
+    });
+  } catch {
+    return;
+  }
+  const res = await batchDeleteDocs(ids);
+  if (res?.code === 200) {
+    ElMessage.success(`已删除 ${res.data?.count || ids.length} 个文档`);
+    selection.value = [];
+    loadList();
+    loadStats();
+    loadCategories();
+  } else {
+    ElMessage.error(res?.msg || "删除失败");
+  }
+}
+
+async function submitMove() {
+  const ids = selection.value.map(r => r.id);
+  if (!ids.length) return;
+  moving.value = true;
+  try {
+    const res = await moveDocs(ids, moveTargetId.value || 0);
+    if (res?.code === 200) {
+      ElMessage.success(`已移动 ${res.data?.count || ids.length} 个文档`);
+      moveVisible.value = false;
+      selection.value = [];
+      loadList();
+      loadCategories();
+    } else {
+      ElMessage.error(res?.msg || "移动失败");
+    }
+  } finally {
+    moving.value = false;
+  }
+}
+
+onMounted(() => {
+  loadCategories();
+  loadStats();
+  loadList();
+});
+</script>
+
+<style lang="less" scoped>
+.doc-library-page {
+  padding: 16px 20px 24px;
+}
+
+.page-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  margin-bottom: 14px;
+}
+
+.page-header h2 {
+  margin: 0 0 4px;
+  font-size: 20px;
+}
+
+.page-header p {
+  margin: 0;
+  color: #909399;
+  font-size: 13px;
+}
+
+.header-actions {
+  display: flex;
+  gap: 10px;
+}
+
+.stats-row {
+  display: grid;
+  grid-template-columns: repeat(5, minmax(0, 1fr));
+  gap: 12px;
+  margin-bottom: 14px;
+}
+
+.stat-card {
+  background: #fff;
+  border: 1px solid #ebeef5;
+  border-radius: 8px;
+  padding: 12px 16px;
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+}
+
+.stat-label {
+  font-size: 12px;
+  color: #909399;
+}
+
+.stat-value {
+  font-size: 22px;
+  font-weight: 600;
+  color: #303133;
+
+  &.success {
+    color: #67c23a;
+  }
+  &.warning {
+    color: #e6a23c;
+  }
+  &.primary {
+    color: #409eff;
+  }
+  &.danger {
+    color: #f56c6c;
+  }
+}
+
+.main-layout {
+  display: flex;
+  gap: 14px;
+  align-items: flex-start;
+}
+
+.category-pane {
+  width: 260px;
+  flex: 0 0 260px;
+  background: #fff;
+  border: 1px solid #ebeef5;
+  border-radius: 8px;
+  padding: 12px;
+}
+
+.pane-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  font-weight: 600;
+  margin-bottom: 10px;
+}
+
+.quick-list {
+  margin: 10px 0 4px;
+}
+
+.quick-item {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  padding: 6px 8px;
+  border-radius: 6px;
+  cursor: pointer;
+  font-size: 13px;
+
+  &:hover {
+    background: #f5f7fa;
+  }
+
+  &.active {
+    background: #ecf5ff;
+    color: #409eff;
+  }
+}
+
+.count {
+  margin-left: auto;
+  font-size: 12px;
+  color: #909399;
+}
+
+.tree-scroll {
+  max-height: 560px;
+  margin-top: 6px;
+}
+
+.tree-node {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  width: 100%;
+  padding-right: 4px;
+}
+
+.node-name {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.node-count {
+  font-size: 12px;
+  color: #909399;
+}
+
+.node-actions {
+  margin-left: auto;
+  display: none;
+}
+
+.tree-node:hover .node-actions {
+  display: inline-flex;
+}
+
+.doc-pane {
+  flex: 1;
+  min-width: 0;
+  background: #fff;
+  border: 1px solid #ebeef5;
+  border-radius: 8px;
+  padding: 16px;
+}
+
+.filter-bar {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  flex-wrap: wrap;
+  margin-bottom: 12px;
+}
+
+.toolbar {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  margin-bottom: 10px;
+}
+
+.toolbar-title {
+  font-weight: 600;
+  font-size: 14px;
+}
+
+.toolbar-sub {
+  margin-left: 8px;
+  font-size: 12px;
+  font-weight: 400;
+  color: #909399;
+}
+
+.toolbar-right {
+  display: flex;
+  gap: 8px;
+}
+
+.doc-cell {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  min-width: 0;
+}
+
+.doc-icon {
+  flex: 0 0 auto;
+}
+
+.doc-title {
+  cursor: pointer;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.doc-title:hover {
+  color: #409eff;
+}
+
+.star-icon {
+  color: #e6a23c;
+  flex: 0 0 auto;
+}
+
+.tag-item {
+  margin-right: 4px;
+}
+
+.muted {
+  color: #c0c4cc;
+}
+
+.pagination {
+  display: flex;
+  justify-content: flex-end;
+  margin-top: 14px;
+}
+
+.preview-body {
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  min-height: 420px;
+}
+
+.preview-image {
+  max-width: 100%;
+  max-height: 60vh;
+}
+
+.preview-frame {
+  width: 100%;
+  height: 60vh;
+  border: none;
+}
+
+// ===== 暗色主题适配 =====
+html.dark & {
+  .page-header p {
+    color: var(--el-text-color-secondary);
+  }
+
+  .stat-card,
+  .category-pane,
+  .doc-pane {
+    background: var(--el-bg-color);
+    border-color: var(--el-border-color-lighter);
+  }
+
+  .stat-value {
+    color: var(--el-text-color-primary);
+  }
+
+  .quick-item:hover {
+    background: var(--el-fill-color-light);
+  }
+
+  .quick-item.active {
+    background: var(--el-color-primary-light-9);
+    color: var(--el-color-primary);
+  }
+
+  .doc-title:hover {
+    color: var(--el-color-primary);
+  }
+}
+</style>
diff --git a/backend/src/views/apps/oa/document/utils/index.js b/backend/src/views/apps/oa/document/utils/index.js
new file mode 100644
index 0000000..6ba9790
--- /dev/null
+++ b/backend/src/views/apps/oa/document/utils/index.js
@@ -0,0 +1,143 @@
+// OA 文档管理（文档库 / 文档图谱）公共工具
+// doc_type: 0-其他 1-文档 2-表格 3-演示 4-PDF 5-图片 6-压缩包 7-视频 8-音频
+// status  : 0-草稿 1-已发布 2-已归档
+// relation: reference-引用 related-相关 version-版本 belong-从属
+
+export const DOC_TYPE_OPTIONS = [
+  { value: 1, label: "文档", color: "#409eff" },
+  { value: 2, label: "表格", color: "#67c23a" },
+  { value: 3, label: "演示", color: "#e6a23c" },
+  { value: 4, label: "PDF", color: "#f56c6c" },
+  { value: 5, label: "图片", color: "#909399" },
+  { value: 6, label: "压缩包", color: "#a06bd6" },
+  { value: 7, label: "视频", color: "#00b8d9" },
+  { value: 8, label: "音频", color: "#ff8c42" },
+  { value: 0, label: "其他", color: "#8d8d8d" }
+];
+
+export const DOC_STATUS_OPTIONS = [
+  { value: 0, label: "草稿", type: "warning" },
+  { value: 1, label: "已发布", type: "success" },
+  { value: 2, label: "已归档", type: "info" }
+];
+
+export const DOC_RELATION_OPTIONS = [
+  { value: "reference", label: "引用" },
+  { value: "related", label: "相关" },
+  { value: "version", label: "版本" },
+  { value: "belong", label: "从属" }
+];
+
+// 可见性：0-租户公开 1-私密
+export const DOC_VISIBILITY_OPTIONS = [
+  { value: 0, label: "租户公开" },
+  { value: 1, label: "私密" }
+];
+
+export function docVisibilityLabel(visibility) {
+  return Number(visibility) === 1 ? "私密" : "公开";
+}
+
+const docTypeMap = new Map(DOC_TYPE_OPTIONS.map(i => [i.value, i]));
+const docStatusMap = new Map(DOC_STATUS_OPTIONS.map(i => [i.value, i]));
+const relationMap = new Map(DOC_RELATION_OPTIONS.map(i => [i.value, i.label]));
+
+export function docTypeLabel(docType) {
+  return docTypeMap.get(Number(docType))?.label || "其他";
+}
+
+export function docTypeColor(docType) {
+  return docTypeMap.get(Number(docType))?.color || "#8d8d8d";
+}
+
+export function docStatusLabel(status) {
+  return docStatusMap.get(Number(status))?.label || "草稿";
+}
+
+export function docStatusTagType(status) {
+  return docStatusMap.get(Number(status))?.type || "warning";
+}
+
+export function relationLabel(relation) {
+  return relationMap.get(relation) || relation || "相关";
+}
+
+/**
+ * 拼接文件访问地址：云存储返回完整 http(s) 地址时直接使用，
+ * 本地存储返回相对路径时拼接接口基址。
+ */
+export function getFileUrl(url) {
+  if (!url) return "";
+  const normalized = String(url).trim().replace(/\\/g, "/");
+  if (/^(https?:\/\/|data:|blob:)/i.test(normalized)) {
+    return normalized;
+  }
+  const baseUrl = String(import.meta.env.VITE_API_BASE_URL || "").replace(/\/$/, "");
+  const path = normalized.startsWith("/") ? normalized : `/${normalized}`;
+  return `${baseUrl}${path}`;
+}
+
+/** 是否为可内联预览的图片 */
+export function isImageDoc(row) {
+  return ["jpg", "jpeg", "png", "gif", "bmp", "webp", "svg"].includes(
+    String(row?.ext || "").toLowerCase()
+  );
+}
+
+/** 是否为可在浏览器直接打开的 PDF */
+export function isPdfDoc(row) {
+  return String(row?.ext || "").toLowerCase() === "pdf";
+}
+
+export function formatFileSize(size) {
+  const bytes = Number(size || 0);
+  if (!bytes) return "-";
+  if (bytes < 1024) return `${bytes} B`;
+  if (bytes < 1024 * 1024) return `${(bytes / 1024).toFixed(1)} KB`;
+  if (bytes < 1024 * 1024 * 1024) return `${(bytes / 1024 / 1024).toFixed(1)} MB`;
+  return `${(bytes / 1024 / 1024 / 1024).toFixed(2)} GB`;
+}
+
+export function formatDateTime(value) {
+  if (!value) return "-";
+  const d = new Date(value);
+  if (Number.isNaN(d.getTime())) return String(value);
+  const pad = n => String(n).padStart(2, "0");
+  return `${d.getFullYear()}-${pad(d.getMonth() + 1)}-${pad(d.getDate())} ${pad(
+    d.getHours()
+  )}:${pad(d.getMinutes())}`;
+}
+
+/** 后端返回的 tags 为逗号分隔字符串，统一转为数组 */
+export function parseTags(tags) {
+  if (Array.isArray(tags)) return tags.filter(Boolean);
+  return String(tags || "")
+    .split(/[,，;；]/)
+    .map(t => t.trim())
+    .filter(Boolean);
+}
+
+/**
+ * 扁平化分类树，用于 tree-select / 下拉选择。
+ * @param {Array} tree 后端返回的分类树
+ * @param {number} depth 起始层级
+ */
+export function flattenCategories(tree, depth = 0, out = []) {
+  (tree || []).forEach(node => {
+    out.push({ id: node.id, name: node.name, depth, doc_count: node.doc_count });
+    if (node.children?.length) {
+      flattenCategories(node.children, depth + 1, out);
+    }
+  });
+  return out;
+}
+
+/** 从分类树中查找节点 */
+export function findCategory(tree, id) {
+  for (const node of tree || []) {
+    if (node.id === id) return node;
+    const hit = findCategory(node.children, id);
+    if (hit) return hit;
+  }
+  return null;
+}
diff --git a/go/controllers/backend_oa_document.go b/go/controllers/backend_oa_document.go
new file mode 100644
index 0000000..51c3fb7
--- /dev/null
+++ b/go/controllers/backend_oa_document.go
@@ -0,0 +1,657 @@
+package controllers
+
+import (
+	"encoding/json"
+	"errors"
+	"io"
+	"strconv"
+	"strings"
+
+	"server/models"
+	"server/pkg/jwtutil"
+	"server/services"
+
+	beego "github.com/beego/beego/v2/server/web"
+)
+
+// 控制器层专用错误，仅用于响应转换
+var (
+	errOaDocUnauthorized = errors.New("未登录或无权限")
+	errOaDocBadID        = errors.New("无效ID")
+	errOaDocBadParam     = errors.New("参数错误")
+)
+
+// BackendOaDocumentController OA 文档管理（文档库 + 文档图谱）。
+// 数据按租户 tid 隔离；所有业务逻辑委托 services 层，本层只做鉴权、参数解析与响应格式化。
+type BackendOaDocumentController struct {
+	beego.Controller
+}
+
+// Prepare 所有接口执行前确保文档相关表存在。
+func (c *BackendOaDocumentController) Prepare() {
+	_ = models.EnsureOaDocumentTables()
+}
+
+func (c *BackendOaDocumentController) oaDocClaims() (*jwtutil.Claims, error) {
+	auth := c.Ctx.Request.Header.Get("Authorization")
+	if auth == "" {
+		return nil, errOaDocUnauthorized
+	}
+	parts := strings.SplitN(auth, " ", 2)
+	if len(parts) != 2 || parts[0] != "Bearer" {
+		return nil, errOaDocUnauthorized
+	}
+	claims, err := jwtutil.ParseToken(parts[1])
+	if err != nil {
+		return nil, err
+	}
+	if claims.UserType != "backend" {
+		return nil, errOaDocUnauthorized
+	}
+	return claims, nil
+}
+
+func (c *BackendOaDocumentController) oaDocOk(data interface{}) {
+	c.Data["json"] = map[string]interface{}{"code": 200, "msg": "success", "data": data}
+	_ = c.ServeJSON()
+}
+
+// oaDocFail 将业务错误转换为统一响应；未识别的错误按 500 处理。
+func (c *BackendOaDocumentController) oaDocFail(err error) {
+	status, code, msg := 400, 400, "操作失败"
+	if err != nil {
+		switch err {
+		case errOaDocUnauthorized:
+			status, code, msg = 401, 401, "未登录或无权限"
+		case services.ErrDocNotFound, services.ErrDocLinkNotFound,
+			services.ErrDocCategoryNotFound, services.ErrDocCategoryInvalid,
+			services.ErrDocLinkTargetNotFound:
+			status, code, msg = 404, 404, err.Error()
+		case services.ErrDocLinkDuplicate:
+			status, code, msg = 409, 409, err.Error()
+		default:
+			msg = err.Error()
+		}
+	}
+	c.Ctx.Output.SetStatus(status)
+	c.Data["json"] = map[string]interface{}{"code": code, "msg": msg}
+	_ = c.ServeJSON()
+}
+
+// oaDocID 解析路径参数 :id
+func (c *BackendOaDocumentController) oaDocID() (uint64, bool) {
+	id, err := strconv.ParseUint(c.Ctx.Input.Param(":id"), 10, 64)
+	if err != nil || id == 0 {
+		c.oaDocFail(errOaDocBadID)
+		return 0, false
+	}
+	return id, true
+}
+
+// oaDocActor 由 JWT 构造文档访问者上下文（含用户、所属部门与是否全权限）。
+func (c *BackendOaDocumentController) oaDocActor(claims *jwtutil.Claims) services.OaDocActor {
+	return services.NewOaDocActor(claims.TenantId, uint64(claims.UserID))
+}
+
+// ---------------- 分类 ----------------
+
+// Categories GET /backend/oa/document/categories 分类树（含文档数量）
+func (c *BackendOaDocumentController) Categories() {
+	claims, err := c.oaDocClaims()
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	tree, err := services.OaDocCategoryTree(c.oaDocActor(claims))
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	c.oaDocOk(tree)
+}
+
+// CreateCategory POST /backend/oa/document/categories
+func (c *BackendOaDocumentController) CreateCategory() {
+	claims, err := c.oaDocClaims()
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	var body struct {
+		ParentID uint64 `json:"parent_id"`
+		Name     string `json:"name"`
+		Remark   string `json:"remark"`
+		Sort     int    `json:"sort"`
+	}
+	if !c.oaDocParseBody(&body) {
+		return
+	}
+	item, err := services.OaDocCategoryCreate(claims.TenantId, body.ParentID, body.Name, body.Remark, body.Sort)
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	c.oaDocOk(item)
+}
+
+// UpdateCategory POST /backend/oa/document/categories/:id
+// parent_id < 0 表示不调整父级
+func (c *BackendOaDocumentController) UpdateCategory() {
+	claims, err := c.oaDocClaims()
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	id, ok := c.oaDocID()
+	if !ok {
+		return
+	}
+	var body struct {
+		ParentID *int64  `json:"parent_id"`
+		Name     *string `json:"name"`
+		Remark   *string `json:"remark"`
+		Sort     *int    `json:"sort"`
+	}
+	if !c.oaDocParseBody(&body) {
+		return
+	}
+	parentID := int64(-1)
+	if body.ParentID != nil {
+		parentID = *body.ParentID
+	}
+	name, remark, sort := "", "", -1
+	if body.Name != nil {
+		name = *body.Name
+	}
+	if body.Remark != nil {
+		remark = *body.Remark
+	}
+	if body.Sort != nil {
+		sort = *body.Sort
+	}
+	item, err := services.OaDocCategoryUpdate(claims.TenantId, id, name, remark, sort, parentID)
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	c.oaDocOk(item)
+}
+
+// DeleteCategory DELETE /backend/oa/document/categories/:id
+func (c *BackendOaDocumentController) DeleteCategory() {
+	claims, err := c.oaDocClaims()
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	id, ok := c.oaDocID()
+	if !ok {
+		return
+	}
+	if err := services.OaDocCategoryDelete(claims.TenantId, id); err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	c.oaDocOk(nil)
+}
+
+// ---------------- 文档 ----------------
+
+// List GET /backend/oa/document/list
+func (c *BackendOaDocumentController) List() {
+	claims, err := c.oaDocClaims()
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+
+	page, _ := c.GetInt("page", 1)
+	pageSize, _ := c.GetInt("pageSize", 20)
+	status, _ := c.GetInt("status", -1)
+	docType, _ := c.GetInt("doc_type", -1)
+	star, _ := c.GetInt("star", -1)
+	categoryID, _ := c.GetUint64("category_id")
+
+	actor := c.oaDocActor(claims)
+	list, total, err := services.OaDocList(actor, services.OaDocListParams{
+		Actor:         actor,
+		Keyword:       strings.TrimSpace(c.GetString("keyword")),
+		CategoryID:    categoryID,
+		Uncategorized: strings.TrimSpace(c.GetString("uncategorized")) == "1",
+		Status:        status,
+		DocType:       docType,
+		Tag:           strings.TrimSpace(c.GetString("tag")),
+		Star:          star,
+		Page:          page,
+		PageSize:      pageSize,
+	})
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	c.oaDocOk(map[string]interface{}{"list": list, "total": total})
+}
+
+// Stats GET /backend/oa/document/stats 文档库概览
+func (c *BackendOaDocumentController) Stats() {
+	claims, err := c.oaDocClaims()
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	stats, err := services.OaDocStats(c.oaDocActor(claims))
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	c.oaDocOk(stats)
+}
+
+// Detail GET /backend/oa/document/detail/:id 详情（累加查看次数）
+func (c *BackendOaDocumentController) Detail() {
+	claims, err := c.oaDocClaims()
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	id, ok := c.oaDocID()
+	if !ok {
+		return
+	}
+	item, err := services.OaDocView(c.oaDocActor(claims), id)
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	c.oaDocOk(item)
+}
+
+// Create POST /backend/oa/document/create
+func (c *BackendOaDocumentController) Create() {
+	claims, err := c.oaDocClaims()
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	body, ok := c.oaDocParseSaveBody()
+	if !ok {
+		return
+	}
+	item, err := services.OaDocCreate(c.oaDocActor(claims), claims.Username, body)
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	c.oaDocOk(item)
+}
+
+// Update POST /backend/oa/document/update/:id
+func (c *BackendOaDocumentController) Update() {
+	claims, err := c.oaDocClaims()
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	id, ok := c.oaDocID()
+	if !ok {
+		return
+	}
+	body, ok := c.oaDocParseSaveBody()
+	if !ok {
+		return
+	}
+	item, err := services.OaDocUpdate(c.oaDocActor(claims), id, body)
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	c.oaDocOk(item)
+}
+
+// Delete DELETE /backend/oa/document/delete/:id 软删除
+func (c *BackendOaDocumentController) Delete() {
+	claims, err := c.oaDocClaims()
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	id, ok := c.oaDocID()
+	if !ok {
+		return
+	}
+	n, err := services.OaDocDelete(c.oaDocActor(claims), []uint64{id})
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	c.oaDocOk(map[string]interface{}{"count": n})
+}
+
+// DeleteBatch POST /backend/oa/document/delete-batch 批量软删除
+func (c *BackendOaDocumentController) DeleteBatch() {
+	claims, err := c.oaDocClaims()
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	var body struct {
+		IDs []uint64 `json:"ids"`
+	}
+	if !c.oaDocParseBody(&body) {
+		return
+	}
+	n, err := services.OaDocDelete(c.oaDocActor(claims), body.IDs)
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	c.oaDocOk(map[string]interface{}{"count": n})
+}
+
+// Move POST /backend/oa/document/move 批量移动分类
+func (c *BackendOaDocumentController) Move() {
+	claims, err := c.oaDocClaims()
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	var body struct {
+		IDs        []uint64 `json:"ids"`
+		CategoryID uint64   `json:"category_id"`
+	}
+	if !c.oaDocParseBody(&body) {
+		return
+	}
+	n, err := services.OaDocMove(c.oaDocActor(claims), body.IDs, body.CategoryID)
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	c.oaDocOk(map[string]interface{}{"count": n})
+}
+
+// Star POST /backend/oa/document/star/:id 收藏 / 取消收藏
+func (c *BackendOaDocumentController) Star() {
+	claims, err := c.oaDocClaims()
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	id, ok := c.oaDocID()
+	if !ok {
+		return
+	}
+	isStar, err := services.OaDocToggleStar(c.oaDocActor(claims), id)
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	c.oaDocOk(map[string]interface{}{"is_star": isStar})
+}
+
+// Download POST /backend/oa/document/download/:id 记录下载次数并返回下载地址
+func (c *BackendOaDocumentController) Download() {
+	claims, err := c.oaDocClaims()
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	id, ok := c.oaDocID()
+	if !ok {
+		return
+	}
+	item, err := services.OaDocDownload(c.oaDocActor(claims), id)
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	c.oaDocOk(map[string]interface{}{
+		"id":           item.ID,
+		"title":        item.Title,
+		"file_url":     item.FileURL,
+		"file_name":    item.FileName,
+		"download_count": item.DownCount,
+	})
+}
+
+// ---------------- 文档关联 ----------------
+
+// LinkList GET /backend/oa/document/links?doc_id=&all=1
+func (c *BackendOaDocumentController) LinkList() {
+	claims, err := c.oaDocClaims()
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	docID, _ := c.GetUint64("doc_id")
+	all := strings.TrimSpace(c.GetString("all")) == "1"
+
+	list, err := services.OaDocLinkList(c.oaDocActor(claims), docID, all)
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	c.oaDocOk(list)
+}
+
+// LinkCreate POST /backend/oa/document/links
+func (c *BackendOaDocumentController) LinkCreate() {
+	claims, err := c.oaDocClaims()
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	var body struct {
+		SourceID uint64 `json:"source_id"`
+		TargetID uint64 `json:"target_id"`
+		Relation string `json:"relation"`
+		Remark   string `json:"remark"`
+	}
+	if !c.oaDocParseBody(&body) {
+		return
+	}
+	item, err := services.OaDocLinkCreate(c.oaDocActor(claims), uint64(claims.UserID),
+		body.SourceID, body.TargetID, body.Relation, body.Remark)
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	c.oaDocOk(item)
+}
+
+// LinkDelete DELETE /backend/oa/document/links/:id
+func (c *BackendOaDocumentController) LinkDelete() {
+	claims, err := c.oaDocClaims()
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	id, ok := c.oaDocID()
+	if !ok {
+		return
+	}
+	if err := services.OaDocLinkDelete(c.oaDocActor(claims), id); err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	c.oaDocOk(nil)
+}
+
+// ---------------- 文档图谱 ----------------
+
+// Graph GET /backend/oa/document/graph
+func (c *BackendOaDocumentController) Graph() {
+	claims, err := c.oaDocClaims()
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	categoryID, _ := c.GetUint64("category_id")
+	limit, _ := c.GetInt("limit", 300)
+	includeCategory := strings.TrimSpace(c.GetString("include_category"))
+	onlyLinked := strings.TrimSpace(c.GetString("only_linked")) == "1"
+
+	result, err := services.OaDocGraph(c.oaDocActor(claims), services.OaDocGraphParams{
+		Keyword:         strings.TrimSpace(c.GetString("keyword")),
+		CategoryID:      categoryID,
+		Relation:        strings.TrimSpace(c.GetString("relation")),
+		IncludeCategory: includeCategory != "0",
+		OnlyLinked:      onlyLinked,
+		Limit:           limit,
+	})
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	c.oaDocOk(result)
+}
+
+// ---------------- 文档共享（私密文档可见性） ----------------
+
+// Members GET /backend/oa/document/members 租户用户列表（私密文档共享选人）
+func (c *BackendOaDocumentController) Members() {
+	claims, err := c.oaDocClaims()
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	keyword := strings.TrimSpace(c.GetString("keyword"))
+	limit, _ := c.GetInt("limit", 100)
+	members, err := services.OaDocMembers(claims.TenantId, keyword, limit)
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	c.oaDocOk(members)
+}
+
+// ShareList GET /backend/oa/document/shares/:id 读取文档共享清单
+func (c *BackendOaDocumentController) ShareList() {
+	claims, err := c.oaDocClaims()
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	id, ok := c.oaDocID()
+	if !ok {
+		return
+	}
+	list, err := services.OaDocShareList(c.oaDocActor(claims), id)
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	c.oaDocOk(list)
+}
+
+// ShareSet POST /backend/oa/document/shares/:id 全量设置文档共享（创建者/全权限用户）
+func (c *BackendOaDocumentController) ShareSet() {
+	claims, err := c.oaDocClaims()
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	id, ok := c.oaDocID()
+	if !ok {
+		return
+	}
+	var body struct {
+		Shares []services.OaDocShareItem `json:"shares"`
+	}
+	if !c.oaDocParseBody(&body) {
+		return
+	}
+	list, err := services.OaDocShareSet(c.oaDocActor(claims), id, body.Shares)
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	c.oaDocOk(list)
+}
+
+// ShareRemove DELETE /backend/oa/document/shares/:sid 删除单条共享
+func (c *BackendOaDocumentController) ShareRemove() {
+	claims, err := c.oaDocClaims()
+	if err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	sid, err := strconv.ParseUint(c.Ctx.Input.Param(":sid"), 10, 64)
+	if err != nil || sid == 0 {
+		c.oaDocFail(errOaDocBadID)
+		return
+	}
+	if err := services.OaDocShareRemove(c.oaDocActor(claims), sid); err != nil {
+		c.oaDocFail(err)
+		return
+	}
+	c.oaDocOk(nil)
+}
+
+// ---------------- 辅助 ----------------
+
+// oaDocParseBody 读取并解析 JSON 请求体
+func (c *BackendOaDocumentController) oaDocParseBody(out interface{}) bool {
+	raw, err := io.ReadAll(c.Ctx.Request.Body)
+	if err != nil || json.Unmarshal(raw, out) != nil {
+		c.oaDocFail(errOaDocBadParam)
+		return false
+	}
+	return true
+}
+
+// oaDocParseSaveBody 解析文档新增/编辑请求体
+func (c *BackendOaDocumentController) oaDocParseSaveBody() (services.OaDocSaveParams, bool) {
+	var body struct {
+		CategoryID *uint64 `json:"category_id"`
+		Title      string  `json:"title"`
+		FileID     uint64 `json:"file_id"`
+		FileURL    string `json:"file_url"`
+		FileName   string `json:"file_name"`
+		Ext        string `json:"ext"`
+		Size       uint64 `json:"size"`
+		Tags       string `json:"tags"`
+		Summary    string `json:"summary"`
+		Status     *int8  `json:"status"`
+		Version    int    `json:"version"`
+		OwnerID    uint64 `json:"owner_id"`
+		OwnerName  string `json:"owner_name"`
+		IsStar     *int8  `json:"is_star"`
+		Visibility *int8  `json:"visibility"`
+	}
+	if !c.oaDocParseBody(&body) {
+		return services.OaDocSaveParams{}, false
+	}
+	params := services.OaDocSaveParams{
+		Title:      body.Title,
+		FileID:     body.FileID,
+		FileURL:    body.FileURL,
+		FileName:   body.FileName,
+		Ext:        body.Ext,
+		Size:       body.Size,
+		Tags:       body.Tags,
+		Summary:    body.Summary,
+		Version:    body.Version,
+		OwnerID:    body.OwnerID,
+		OwnerName:  body.OwnerName,
+	}
+	if body.Visibility != nil {
+		params.Visibility = *body.Visibility
+	}
+	if body.CategoryID != nil {
+		params.SetCategory = true
+		params.CategoryID = *body.CategoryID
+	}
+	// -1 表示"不修改该字段"
+	if body.Status != nil {
+		params.Status = *body.Status
+	} else {
+		params.Status = -1
+	}
+	if body.IsStar != nil {
+		params.IsStar = *body.IsStar
+	} else {
+		params.IsStar = -1
+	}
+	return params, true
+}
diff --git a/go/controllers/platform_tenant_user.go b/go/controllers/platform_tenant_user.go
index 41e7d36..0b8bbbf 100644
--- a/go/controllers/platform_tenant_user.go
+++ b/go/controllers/platform_tenant_user.go
@@ -32,6 +32,7 @@ type tenantUserPayload struct {
 	Password  *string `json:"password"`
 	IsDefault *int8   `json:"is_default"`
 	Status    *int8   `json:"status"`
+	OrgID     *uint64 `json:"org_id"`
 	Remark    *string `json:"remark"`
 }
 
@@ -200,6 +201,11 @@ func (c *PlatformTenantUserController) CreateTenantUser() {
 		_ = c.ServeJSON()
 		return
 	}
+	if p.OrgID != nil && *p.OrgID > 0 {
+		_, _ = models.Orm.QueryTable(new(models.SystemTenantUser)).
+			Filter("id", id).
+			Update(map[string]interface{}{"org_id": *p.OrgID})
+	}
 	if isDefault == 1 {
 		_ = services.SetDefaultTenant(p.Uid, p.Tid)
 		// 租户第一个账号（普通租户）即租户管理员：自动绑定「租户管理员」角色，
@@ -265,6 +271,9 @@ func (c *PlatformTenantUserController) EditTenantUser() {
 	if p.Status != nil {
 		update["status"] = *p.Status
 	}
+	if p.OrgID != nil {
+		update["org_id"] = *p.OrgID
+	}
 	if p.Remark != nil {
 		update["remark"] = p.Remark
 	}
diff --git a/go/docs/sql/yz_oa_document.sql b/go/docs/sql/yz_oa_document.sql
new file mode 100644
index 0000000..14503ff
--- /dev/null
+++ b/go/docs/sql/yz_oa_document.sql
@@ -0,0 +1,107 @@
+-- OA 文档管理（文档库 / 文档图谱）建表脚本
+--
+-- 说明：正常情况【不需要执行本脚本】。
+--       服务在首次访问 /backend/oa/document/* 接口时，会由
+--       controllers/backend_oa_document.go 的 Prepare() 调用
+--       models.EnsureOaDocumentTables() 自动建表（CREATE TABLE IF NOT EXISTS，
+--       sync.Once 保证单进程只建一次）。
+--
+--       本脚本仅用于以下场景手工预建：
+--         1. 生产库账号没有 DDL 权限，自动建表失败；
+--         2. DBA 要求先在预发/生产环境审核建表语句；
+--         3. 需要排查表结构是否符合预期。
+--
+-- 幂等：全部使用 IF NOT EXISTS，可反复执行，不会覆盖已有数据。
+-- 与代码保持一致：models/oa_document.go
+
+-- 1. 文档分类表（树形）
+CREATE TABLE IF NOT EXISTS yz_backend_oa_doc_category (
+  id bigint unsigned NOT NULL AUTO_INCREMENT COMMENT '主键ID',
+  tid int NOT NULL DEFAULT 0 COMMENT '租户ID',
+  parent_id bigint unsigned NOT NULL DEFAULT 0 COMMENT '父级ID，0为一级分类',
+  name varchar(128) NOT NULL DEFAULT '' COMMENT '分类名称',
+  sort int NOT NULL DEFAULT 0 COMMENT '排序，越小越靠前',
+  remark varchar(255) NOT NULL DEFAULT '' COMMENT '备注',
+  is_deleted tinyint NOT NULL DEFAULT 0 COMMENT '是否删除 0-否 1-是',
+  create_time datetime DEFAULT NULL COMMENT '创建时间',
+  update_time datetime DEFAULT NULL COMMENT '更新时间',
+  delete_time datetime DEFAULT NULL COMMENT '删除时间',
+  PRIMARY KEY (id),
+  KEY idx_tid_parent (tid, parent_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci COMMENT='OA文档分类表';
+
+-- 2. 文档表
+--    doc_type: 0-其他 1-文档 2-表格 3-演示 4-PDF 5-图片 6-压缩包 7-视频 8-音频
+--    status  : 0-草稿 1-已发布 2-已归档
+CREATE TABLE IF NOT EXISTS yz_backend_oa_doc (
+  id bigint unsigned NOT NULL AUTO_INCREMENT COMMENT '主键ID',
+  tid int NOT NULL DEFAULT 0 COMMENT '租户ID',
+  category_id bigint unsigned NOT NULL DEFAULT 0 COMMENT '所属分类ID，0为未分类',
+  title varchar(255) NOT NULL DEFAULT '' COMMENT '文档标题',
+  file_id bigint unsigned NOT NULL DEFAULT 0 COMMENT '关联附件ID(yz_system_files)',
+  file_url varchar(512) NOT NULL DEFAULT '' COMMENT '附件访问地址',
+  file_name varchar(255) NOT NULL DEFAULT '' COMMENT '原始文件名',
+  ext varchar(16) NOT NULL DEFAULT '' COMMENT '扩展名',
+  size bigint unsigned NOT NULL DEFAULT 0 COMMENT '文件大小(字节)',
+  doc_type tinyint NOT NULL DEFAULT 0 COMMENT '类型 0-其他 1-文档 2-表格 3-演示 4-PDF 5-图片 6-压缩包 7-视频 8-音频',
+  tags varchar(255) NOT NULL DEFAULT '' COMMENT '标签，逗号分隔',
+  summary varchar(1000) NOT NULL DEFAULT '' COMMENT '摘要/描述',
+  status tinyint NOT NULL DEFAULT 0 COMMENT '状态 0-草稿 1-已发布 2-已归档',
+  version int NOT NULL DEFAULT 1 COMMENT '版本号',
+  is_star tinyint NOT NULL DEFAULT 0 COMMENT '是否收藏 0-否 1-是',
+  owner_id bigint unsigned NOT NULL DEFAULT 0 COMMENT '负责人ID',
+  owner_name varchar(100) NOT NULL DEFAULT '' COMMENT '负责人姓名',
+  view_count int NOT NULL DEFAULT 0 COMMENT '查看次数',
+  download_count int NOT NULL DEFAULT 0 COMMENT '下载次数',
+  creator_id bigint unsigned NOT NULL DEFAULT 0 COMMENT '创建人ID',
+  creator_name varchar(100) NOT NULL DEFAULT '' COMMENT '创建人姓名',
+  visibility tinyint NOT NULL DEFAULT 0 COMMENT '可见性 0-租户公开 1-私密(仅创建者与被共享者)',
+  is_deleted tinyint NOT NULL DEFAULT 0 COMMENT '是否删除 0-否 1-是',
+  create_time datetime DEFAULT NULL COMMENT '创建时间',
+  update_time datetime DEFAULT NULL COMMENT '更新时间',
+  delete_time datetime DEFAULT NULL COMMENT '删除时间',
+  PRIMARY KEY (id),
+  KEY idx_tid_cate (tid, category_id, is_deleted),
+  KEY idx_tid_status (tid, status, is_deleted),
+  KEY idx_tid_title (tid, title)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci COMMENT='OA文档表';
+
+-- 3. 文档关联表（文档图谱的连线来源）
+--    relation: reference-引用 related-相关 version-版本 belong-从属
+--    说明：代码在建立关联时会同时写入正向与反向两条记录，便于图谱无向检索；
+--          uk_doc_pair 保证同一对文档的同一关系不重复。
+CREATE TABLE IF NOT EXISTS yz_backend_oa_doc_link (
+  id bigint unsigned NOT NULL AUTO_INCREMENT COMMENT '主键ID',
+  tid int NOT NULL DEFAULT 0 COMMENT '租户ID',
+  source_id bigint unsigned NOT NULL DEFAULT 0 COMMENT '源文档ID',
+  target_id bigint unsigned NOT NULL DEFAULT 0 COMMENT '目标文档ID',
+  relation varchar(32) NOT NULL DEFAULT 'related' COMMENT '关系 reference-引用 related-相关 version-版本 belong-从属',
+  remark varchar(255) NOT NULL DEFAULT '' COMMENT '关系说明',
+  creator_id bigint unsigned NOT NULL DEFAULT 0 COMMENT '创建人ID',
+  create_time datetime DEFAULT NULL COMMENT '创建时间',
+  PRIMARY KEY (id),
+  UNIQUE KEY uk_doc_pair (tid, source_id, target_id, relation),
+  KEY idx_tid_source (tid, source_id),
+  KEY idx_tid_target (tid, target_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci COMMENT='OA文档关联表';
+
+-- 4. 文档共享表（私密文档可见性授权）
+--    share_type: 0-用户(target_id=uid) 1-部门(target_id=org_id，含子部门)
+--    uk_doc_target 保证同一文档对同一目标不重复授权。
+CREATE TABLE IF NOT EXISTS yz_backend_oa_doc_share (
+  id bigint unsigned NOT NULL AUTO_INCREMENT COMMENT '主键ID',
+  tid int NOT NULL DEFAULT 0 COMMENT '租户ID',
+  doc_id bigint unsigned NOT NULL DEFAULT 0 COMMENT '文档ID',
+  share_type tinyint NOT NULL DEFAULT 0 COMMENT '共享类型 0-用户(target_id=uid) 1-部门(target_id=org_id，含子部门)',
+  target_id bigint unsigned NOT NULL DEFAULT 0 COMMENT '共享目标ID',
+  creator_id bigint unsigned NOT NULL DEFAULT 0 COMMENT '授权人ID',
+  create_time datetime DEFAULT NULL COMMENT '创建时间',
+  PRIMARY KEY (id),
+  UNIQUE KEY uk_doc_target (tid, doc_id, share_type, target_id),
+  KEY idx_tid_doc (tid, doc_id),
+  KEY idx_target (tid, share_type, target_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci COMMENT='OA文档共享表';
+
+-- 5. 校验（应看到 4 张表）
+-- SHOW TABLES LIKE 'yz_backend_oa_doc%';
+
diff --git a/go/models/init.go b/go/models/init.go
index ebd6114..706bcf2 100644
--- a/go/models/init.go
+++ b/go/models/init.go
@@ -114,6 +114,10 @@ func Init(_ string) {
 
 		new(OaSchedule),
 		new(OaNotice),
+		new(OaDocCategory),
+		new(OaDoc),
+		new(OaDocLink),
+		new(OaDocShare),
 		new(BackendOaCompensationScheme),
 		new(BackendOaPayroll),
 		new(BackendOaPayrollItem),
@@ -127,4 +131,5 @@ func Init(_ string) {
 	// 补齐历史库缺失的列（已存在时 MySQL 报 duplicate column，统一忽略）
 	EnsureAdminRoleTenantColumn()
 	EnsureAdminRoleCustomColumn()
+	EnsureTenantUserOrgColumn()
 }
diff --git a/go/models/oa_document.go b/go/models/oa_document.go
new file mode 100644
index 0000000..77cdeca
--- /dev/null
+++ b/go/models/oa_document.go
@@ -0,0 +1,275 @@
+package models
+
+import (
+	"strings"
+	"sync"
+	"time"
+)
+
+// OA 文档管理（文档库 / 文档图谱）数据模型。
+//
+// 三张表按租户 tid 隔离：
+//   - yz_backend_oa_doc_category 文档分类（树形，parent_id=0 为一级）
+//   - yz_backend_oa_doc           文档主体（附件信息冗余存储，避免每次联查文件表）
+//   - yz_backend_oa_doc_link      文档关联关系（引用/相关/版本/从属），文档图谱的连线来源
+
+// OaDocCategory OA文档分类: yz_backend_oa_doc_category
+type OaDocCategory struct {
+	ID         uint64     `orm:"column(id);pk;auto" json:"id"`
+	Tid        int        `orm:"column(tid)" json:"tid"`
+	ParentID   uint64     `orm:"column(parent_id);default(0)" json:"parent_id"`
+	Name       string     `orm:"column(name);size(128)" json:"name"`
+	Sort       int        `orm:"column(sort);default(0)" json:"sort"`
+	Remark     string     `orm:"column(remark);size(255);default()" json:"remark"`
+	IsDeleted  int8       `orm:"column(is_deleted);default(0)" json:"is_deleted"`
+	CreateTime time.Time  `orm:"column(create_time);auto_now_add;type(datetime)" json:"create_time"`
+	UpdateTime *time.Time `orm:"column(update_time);auto_now;type(datetime);null" json:"update_time"`
+	DeleteTime *time.Time `orm:"column(delete_time);type(datetime);null" json:"delete_time"`
+}
+
+func (m *OaDocCategory) TableName() string {
+	return "yz_backend_oa_doc_category"
+}
+
+// OaDoc OA文档: yz_backend_oa_doc
+// status: 0-草稿 1-已发布 2-已归档
+// doc_type: 0-其他 1-文档 2-表格 3-演示 4-PDF 5-图片 6-压缩包 7-视频 8-音频
+type OaDoc struct {
+	ID          uint64     `orm:"column(id);pk;auto" json:"id"`
+	Tid         int        `orm:"column(tid)" json:"tid"`
+	CategoryID  uint64     `orm:"column(category_id);default(0)" json:"category_id"`
+	Title       string     `orm:"column(title);size(255)" json:"title"`
+	FileID      uint64     `orm:"column(file_id);default(0)" json:"file_id"`
+	FileURL     string     `orm:"column(file_url);size(512);default()" json:"file_url"`
+	FileName    string     `orm:"column(file_name);size(255);default()" json:"file_name"`
+	Ext         string     `orm:"column(ext);size(16);default()" json:"ext"`
+	Size        uint64     `orm:"column(size);default(0)" json:"size"`
+	DocType     int8       `orm:"column(doc_type);default(0)" json:"doc_type"`
+	Tags        string     `orm:"column(tags);size(255);default()" json:"tags"`
+	Summary     string     `orm:"column(summary);size(1000);default()" json:"summary"`
+	Status      int8       `orm:"column(status);default(0)" json:"status"`
+	Version     int        `orm:"column(version);default(1)" json:"version"`
+	IsStar      int8       `orm:"column(is_star);default(0)" json:"is_star"`
+	OwnerID     uint64     `orm:"column(owner_id);default(0)" json:"owner_id"`
+	OwnerName   string     `orm:"column(owner_name);size(100);default()" json:"owner_name"`
+	ViewCount   int        `orm:"column(view_count);default(0)" json:"view_count"`
+	DownCount   int        `orm:"column(download_count);default(0)" json:"download_count"`
+	CreatorID   uint64     `orm:"column(creator_id);default(0)" json:"creator_id"`
+	CreatorName string     `orm:"column(creator_name);size(100);default()" json:"creator_name"`
+	// Visibility 可见性：0-租户公开（默认，租户内所有后台用户可见）1-私密（仅创建者与被共享者可见）
+	Visibility  int8       `orm:"column(visibility);default(0)" json:"visibility"`
+	IsDeleted   int8       `orm:"column(is_deleted);default(0)" json:"is_deleted"`
+	CreateTime  time.Time  `orm:"column(create_time);auto_now_add;type(datetime)" json:"create_time"`
+	UpdateTime  *time.Time `orm:"column(update_time);auto_now;type(datetime);null" json:"update_time"`
+	DeleteTime  *time.Time `orm:"column(delete_time);type(datetime);null" json:"delete_time"`
+}
+
+func (m *OaDoc) TableName() string {
+	return "yz_backend_oa_doc"
+}
+
+// OaDocLink OA文档关联: yz_backend_oa_doc_link
+// relation: reference-引用 related-相关 version-版本迭代 belong-从属
+type OaDocLink struct {
+	ID         uint64    `orm:"column(id);pk;auto" json:"id"`
+	Tid        int       `orm:"column(tid)" json:"tid"`
+	SourceID   uint64    `orm:"column(source_id);default(0)" json:"source_id"`
+	TargetID   uint64    `orm:"column(target_id);default(0)" json:"target_id"`
+	Relation   string    `orm:"column(relation);size(32);default(related)" json:"relation"`
+	Remark     string    `orm:"column(remark);size(255);default()" json:"remark"`
+	CreatorID  uint64    `orm:"column(creator_id);default(0)" json:"creator_id"`
+	CreateTime time.Time `orm:"column(create_time);auto_now_add;type(datetime)" json:"create_time"`
+}
+
+func (m *OaDocLink) TableName() string {
+	return "yz_backend_oa_doc_link"
+}
+
+// OaDocShare OA文档共享: yz_backend_oa_doc_share
+// 私密文档（visibility=1）在"创建者可见"之外，额外授权给指定用户或部门。
+// share_type: 0-用户（target_id 为 yz_system_tenant_user.uid）
+//             1-部门（target_id 为 yz_backend_organization.id，含其全部子部门）
+type OaDocShare struct {
+	ID         uint64    `orm:"column(id);pk;auto" json:"id"`
+	Tid        int       `orm:"column(tid)" json:"tid"`
+	DocID      uint64    `orm:"column(doc_id);default(0)" json:"doc_id"`
+	ShareType  int8      `orm:"column(share_type);default(0)" json:"share_type"`
+	TargetID   uint64    `orm:"column(target_id);default(0)" json:"target_id"`
+	CreatorID  uint64    `orm:"column(creator_id);default(0)" json:"creator_id"`
+	CreateTime time.Time `orm:"column(create_time);auto_now_add;type(datetime)" json:"create_time"`
+}
+
+func (m *OaDocShare) TableName() string {
+	return "yz_backend_oa_doc_share"
+}
+
+// 文档类型常量（doc_type）
+const (
+	DocTypeOther  int8 = 0
+	DocTypeDoc    int8 = 1 // doc / docx / txt / md / rtf
+	DocTypeSheet  int8 = 2 // xls / xlsx / csv
+	DocTypeSlide  int8 = 3 // ppt / pptx
+	DocTypePDF    int8 = 4 // pdf
+	DocTypeImage  int8 = 5 // jpg / png / gif / bmp / webp
+	DocTypeZip    int8 = 6 // zip / rar / 7z / tar / gz
+	DocTypeVideo  int8 = 7
+	DocTypeAudio  int8 = 8
+)
+
+// 文档状态常量（status）
+const (
+	DocStatusDraft   int8 = 0
+	DocStatusPublish int8 = 1
+	DocStatusArchive int8 = 2
+)
+
+// 文档关联关系常量（relation）
+const (
+	DocRelationReference = "reference"
+	DocRelationRelated   = "related"
+	DocRelationVersion   = "version"
+	DocRelationBelong    = "belong"
+)
+
+// 文档可见性常量（visibility）
+const (
+	DocVisibilityPublic  int8 = 0 // 租户公开
+	DocVisibilityPrivate int8 = 1 // 私密
+)
+
+// 文档共享目标类型常量（share_type）
+const (
+	DocShareTypeUser int8 = 0 // 共享给指定用户（target_id = yz_system_tenant_user.uid）
+	DocShareTypeOrg  int8 = 1 // 共享给部门（target_id = yz_backend_organization.id，含子部门）
+)
+
+// extDocTypeMap 扩展名 -> 文档类型
+var extDocTypeMap = map[string]int8{
+	"doc": DocTypeDoc, "docx": DocTypeDoc, "txt": DocTypeDoc, "md": DocTypeDoc,
+	"rtf": DocTypeDoc, "wps": DocTypeDoc, "odt": DocTypeDoc,
+	"xls": DocTypeSheet, "xlsx": DocTypeSheet, "csv": DocTypeSheet, "ods": DocTypeSheet,
+	"ppt": DocTypeSlide, "pptx": DocTypeSlide, "odp": DocTypeSlide,
+	"pdf": DocTypePDF,
+	"jpg": DocTypeImage, "jpeg": DocTypeImage, "png": DocTypeImage,
+	"gif": DocTypeImage, "bmp": DocTypeImage, "webp": DocTypeImage, "svg": DocTypeImage,
+	"zip": DocTypeZip, "rar": DocTypeZip, "7z": DocTypeZip, "tar": DocTypeZip, "gz": DocTypeZip,
+	"mp4": DocTypeVideo, "webm": DocTypeVideo, "mov": DocTypeVideo, "avi": DocTypeVideo,
+	"mp3": DocTypeAudio, "wav": DocTypeAudio, "ogg": DocTypeAudio,
+}
+
+// DocTypeByExt 根据扩展名推断文档类型，未知返回"其他"。
+func DocTypeByExt(ext string) int8 {
+	if t, ok := extDocTypeMap[strings.ToLower(strings.TrimPrefix(strings.TrimSpace(ext), "."))]; ok {
+		return t
+	}
+	return DocTypeOther
+}
+
+var oaDocumentTableOnce sync.Once
+
+// EnsureOaDocumentTables 首次访问文档接口时自动建表（若不存在）。
+// 与通知公告/日程保持一致的运行期自愈策略，避免新功能上线还需手工执行建表脚本。
+func EnsureOaDocumentTables() error {
+	if Orm == nil {
+		return nil
+	}
+	var err error
+	oaDocumentTableOnce.Do(func() {
+		_, err = Orm.Raw(`
+CREATE TABLE IF NOT EXISTS yz_backend_oa_doc_category (
+  id bigint unsigned NOT NULL AUTO_INCREMENT COMMENT '主键ID',
+  tid int NOT NULL DEFAULT 0 COMMENT '租户ID',
+  parent_id bigint unsigned NOT NULL DEFAULT 0 COMMENT '父级ID，0为一级分类',
+  name varchar(128) NOT NULL DEFAULT '' COMMENT '分类名称',
+  sort int NOT NULL DEFAULT 0 COMMENT '排序，越小越靠前',
+  remark varchar(255) NOT NULL DEFAULT '' COMMENT '备注',
+  is_deleted tinyint NOT NULL DEFAULT 0 COMMENT '是否删除 0-否 1-是',
+  create_time datetime DEFAULT NULL COMMENT '创建时间',
+  update_time datetime DEFAULT NULL COMMENT '更新时间',
+  delete_time datetime DEFAULT NULL COMMENT '删除时间',
+  PRIMARY KEY (id),
+  KEY idx_tid_parent (tid, parent_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci COMMENT='OA文档分类表'`).Exec()
+		if err != nil {
+			return
+		}
+
+		_, err = Orm.Raw(`
+CREATE TABLE IF NOT EXISTS yz_backend_oa_doc (
+  id bigint unsigned NOT NULL AUTO_INCREMENT COMMENT '主键ID',
+  tid int NOT NULL DEFAULT 0 COMMENT '租户ID',
+  category_id bigint unsigned NOT NULL DEFAULT 0 COMMENT '所属分类ID，0为未分类',
+  title varchar(255) NOT NULL DEFAULT '' COMMENT '文档标题',
+  file_id bigint unsigned NOT NULL DEFAULT 0 COMMENT '关联附件ID(yz_system_files)',
+  file_url varchar(512) NOT NULL DEFAULT '' COMMENT '附件访问地址',
+  file_name varchar(255) NOT NULL DEFAULT '' COMMENT '原始文件名',
+  ext varchar(16) NOT NULL DEFAULT '' COMMENT '扩展名',
+  size bigint unsigned NOT NULL DEFAULT 0 COMMENT '文件大小(字节)',
+  doc_type tinyint NOT NULL DEFAULT 0 COMMENT '类型 0-其他 1-文档 2-表格 3-演示 4-PDF 5-图片 6-压缩包 7-视频 8-音频',
+  tags varchar(255) NOT NULL DEFAULT '' COMMENT '标签，逗号分隔',
+  summary varchar(1000) NOT NULL DEFAULT '' COMMENT '摘要/描述',
+  status tinyint NOT NULL DEFAULT 0 COMMENT '状态 0-草稿 1-已发布 2-已归档',
+  version int NOT NULL DEFAULT 1 COMMENT '版本号',
+  is_star tinyint NOT NULL DEFAULT 0 COMMENT '是否收藏 0-否 1-是',
+  owner_id bigint unsigned NOT NULL DEFAULT 0 COMMENT '负责人ID',
+  owner_name varchar(100) NOT NULL DEFAULT '' COMMENT '负责人姓名',
+  view_count int NOT NULL DEFAULT 0 COMMENT '查看次数',
+  download_count int NOT NULL DEFAULT 0 COMMENT '下载次数',
+  creator_id bigint unsigned NOT NULL DEFAULT 0 COMMENT '创建人ID',
+  creator_name varchar(100) NOT NULL DEFAULT '' COMMENT '创建人姓名',
+  visibility tinyint NOT NULL DEFAULT 0 COMMENT '可见性 0-租户公开 1-私密(仅创建者与被共享者)',
+  is_deleted tinyint NOT NULL DEFAULT 0 COMMENT '是否删除 0-否 1-是',
+  create_time datetime DEFAULT NULL COMMENT '创建时间',
+  update_time datetime DEFAULT NULL COMMENT '更新时间',
+  delete_time datetime DEFAULT NULL COMMENT '删除时间',
+  PRIMARY KEY (id),
+  KEY idx_tid_cate (tid, category_id, is_deleted),
+  KEY idx_tid_status (tid, status, is_deleted),
+  KEY idx_tid_title (tid, title)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci COMMENT='OA文档表'`).Exec()
+		if err != nil {
+			return
+		}
+
+		_, err = Orm.Raw(`
+CREATE TABLE IF NOT EXISTS yz_backend_oa_doc_link (
+  id bigint unsigned NOT NULL AUTO_INCREMENT COMMENT '主键ID',
+  tid int NOT NULL DEFAULT 0 COMMENT '租户ID',
+  source_id bigint unsigned NOT NULL DEFAULT 0 COMMENT '源文档ID',
+  target_id bigint unsigned NOT NULL DEFAULT 0 COMMENT '目标文档ID',
+  relation varchar(32) NOT NULL DEFAULT 'related' COMMENT '关系 reference-引用 related-相关 version-版本 belong-从属',
+  remark varchar(255) NOT NULL DEFAULT '' COMMENT '关系说明',
+  creator_id bigint unsigned NOT NULL DEFAULT 0 COMMENT '创建人ID',
+  create_time datetime DEFAULT NULL COMMENT '创建时间',
+  PRIMARY KEY (id),
+  UNIQUE KEY uk_doc_pair (tid, source_id, target_id, relation),
+  KEY idx_tid_source (tid, source_id),
+  KEY idx_tid_target (tid, target_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci COMMENT='OA文档关联表'`).Exec()
+		if err != nil {
+			return
+		}
+
+		// 历史库补齐 visibility 列（已存在时 MySQL 报 duplicate column，忽略）
+		_, _ = Orm.Raw(`
+			ALTER TABLE yz_backend_oa_doc
+			ADD COLUMN visibility tinyint NOT NULL DEFAULT 0 COMMENT '可见性 0-租户公开 1-私密(仅创建者与被共享者)'
+		`).Exec()
+
+		_, err = Orm.Raw(`
+CREATE TABLE IF NOT EXISTS yz_backend_oa_doc_share (
+  id bigint unsigned NOT NULL AUTO_INCREMENT COMMENT '主键ID',
+  tid int NOT NULL DEFAULT 0 COMMENT '租户ID',
+  doc_id bigint unsigned NOT NULL DEFAULT 0 COMMENT '文档ID',
+  share_type tinyint NOT NULL DEFAULT 0 COMMENT '共享类型 0-用户(target_id=uid) 1-部门(target_id=org_id，含子部门)',
+  target_id bigint unsigned NOT NULL DEFAULT 0 COMMENT '共享目标ID',
+  creator_id bigint unsigned NOT NULL DEFAULT 0 COMMENT '授权人ID',
+  create_time datetime DEFAULT NULL COMMENT '创建时间',
+  PRIMARY KEY (id),
+  UNIQUE KEY uk_doc_target (tid, doc_id, share_type, target_id),
+  KEY idx_tid_doc (tid, doc_id),
+  KEY idx_target (tid, share_type, target_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci COMMENT='OA文档共享表'`).Exec()
+	})
+	return err
+}
diff --git a/go/models/system_tenant_user.go b/go/models/system_tenant_user.go
index 347a902..627e2fe 100644
--- a/go/models/system_tenant_user.go
+++ b/go/models/system_tenant_user.go
@@ -19,6 +19,9 @@ type SystemTenantUser struct {
 	Password   *string    `orm:"column(password);size(255);null" json:"password"`
 	IsDefault  int8       `orm:"column(is_default);default(0)" json:"is_default"`
 	Status     int8       `orm:"column(status);default(1)" json:"status"`
+	// OrgID 所属组织（部门），关联 yz_backend_organization(id)；0 表示未分配。
+	// 用于文档私密共享等需要按部门判定可见性的场景。
+	OrgID      uint64     `orm:"column(org_id);default(0)" json:"org_id"`
 	Remark     *string    `orm:"column(remark);size(255);null" json:"remark"`
 	CreateTime time.Time  `orm:"column(create_time);auto_now_add;type(datetime)" json:"create_time"`
 	UpdateTime *time.Time `orm:"column(update_time);auto_now;type(datetime);null" json:"update_time"`
@@ -44,3 +47,19 @@ func EnsureTenantUserGroupColumn() {
 		`).Exec()
 	})
 }
+
+var tenantUserOrgColOnce sync.Once
+
+// EnsureTenantUserOrgColumn 为租户用户表补齐 org_id（所属部门）列。
+// 与 group_id 同样的幂等策略：字段已存在时 MySQL 报 duplicate column，统一忽略。
+func EnsureTenantUserOrgColumn() {
+	if Orm == nil {
+		return
+	}
+	tenantUserOrgColOnce.Do(func() {
+		_, _ = Orm.Raw(`
+			ALTER TABLE yz_system_tenant_user
+			ADD COLUMN org_id bigint unsigned NOT NULL DEFAULT 0 COMMENT '所属组织ID 关联 yz_backend_organization(id)，0-未分配'
+		`).Exec()
+	})
+}
diff --git a/go/routers/backend/backend.go b/go/routers/backend/backend.go
index 833e452..2827a33 100644
--- a/go/routers/backend/backend.go
+++ b/go/routers/backend/backend.go
@@ -296,6 +296,26 @@ func RegisterAuthRoutes() {
 	beego.Router("/backend/oa/notice/delete/:id", &controllers.BackendOaNoticeController{}, "delete:Delete")
 	beego.Router("/backend/oa/notice/publish/:id", &controllers.BackendOaNoticeController{}, "post:Publish")
 	beego.Router("/backend/oa/notice/top/:id", &controllers.BackendOaNoticeController{}, "post:Top")
+
+	// OA文档管理（文档库 / 文档图谱）
+	beego.Router("/backend/oa/document/categories", &controllers.BackendOaDocumentController{}, "get:Categories;post:CreateCategory")
+	beego.Router("/backend/oa/document/categories/:id", &controllers.BackendOaDocumentController{}, "post:UpdateCategory;delete:DeleteCategory")
+	beego.Router("/backend/oa/document/list", &controllers.BackendOaDocumentController{}, "get:List")
+	beego.Router("/backend/oa/document/stats", &controllers.BackendOaDocumentController{}, "get:Stats")
+	beego.Router("/backend/oa/document/graph", &controllers.BackendOaDocumentController{}, "get:Graph")
+	beego.Router("/backend/oa/document/links", &controllers.BackendOaDocumentController{}, "get:LinkList;post:LinkCreate")
+	beego.Router("/backend/oa/document/links/:id", &controllers.BackendOaDocumentController{}, "delete:LinkDelete")
+	beego.Router("/backend/oa/document/detail/:id", &controllers.BackendOaDocumentController{}, "get:Detail")
+	beego.Router("/backend/oa/document/create", &controllers.BackendOaDocumentController{}, "post:Create")
+	beego.Router("/backend/oa/document/update/:id", &controllers.BackendOaDocumentController{}, "post:Update")
+	beego.Router("/backend/oa/document/delete/:id", &controllers.BackendOaDocumentController{}, "delete:Delete")
+	beego.Router("/backend/oa/document/delete-batch", &controllers.BackendOaDocumentController{}, "post:DeleteBatch")
+	beego.Router("/backend/oa/document/move", &controllers.BackendOaDocumentController{}, "post:Move")
+	beego.Router("/backend/oa/document/star/:id", &controllers.BackendOaDocumentController{}, "post:Star")
+	beego.Router("/backend/oa/document/download/:id", &controllers.BackendOaDocumentController{}, "post:Download")
+	beego.Router("/backend/oa/document/members", &controllers.BackendOaDocumentController{}, "get:Members")
+	beego.Router("/backend/oa/document/shares/:id", &controllers.BackendOaDocumentController{}, "get:ShareList;post:ShareSet")
+	beego.Router("/backend/oa/document/share/:sid", &controllers.BackendOaDocumentController{}, "delete:ShareRemove")
 }
 
 // registerOrganizationRoutes 为指定模块前缀注册组织架构路由。
diff --git a/go/services/oa_document.go b/go/services/oa_document.go
new file mode 100644
index 0000000..1d607a0
--- /dev/null
+++ b/go/services/oa_document.go
@@ -0,0 +1,1610 @@
+package services
+
+import (
+	"errors"
+	"fmt"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+
+	"server/models"
+
+	"github.com/beego/beego/v2/client/orm"
+)
+
+// OA 文档管理业务逻辑层（文档库 + 文档图谱）。
+// 只处理业务与数据访问，不感知 HTTP；错误以 error 向上抛出，由控制器转译。
+
+// 业务错误
+var (
+	ErrDocCategoryNotFound   = errors.New("分类不存在")
+	ErrDocCategoryHasChild   = errors.New("存在子分类，请先删除子分类")
+	ErrDocCategoryHasDoc     = errors.New("分类下仍有文档，请先移动或删除")
+	ErrDocCategoryNameEmpty  = errors.New("请输入分类名称")
+	ErrDocCategoryCircular   = errors.New("不能将分类移动到自己或其子分类下")
+	ErrDocNotFound           = errors.New("文档不存在")
+	ErrDocTitleEmpty         = errors.New("请输入文档标题")
+	ErrDocCategoryInvalid    = errors.New("所属分类不存在")
+	ErrDocLinkSelf           = errors.New("不能关联文档自身")
+	ErrDocLinkDuplicate      = errors.New("该关联关系已存在")
+	ErrDocLinkTargetNotFound = errors.New("被关联的文档不存在")
+	ErrDocLinkNotFound       = errors.New("关联关系不存在")
+	ErrDocIDEmpty            = errors.New("请选择要操作的文档")
+	ErrDocNoPermission       = errors.New("无权操作该私密文档")
+)
+
+// ---------------- 访问者上下文与可见性 ----------------
+
+// OaDocActor 文档访问者上下文。
+//
+// 两级隔离：
+//  1. 租户隔离：所有查询强制带 tid，tid 只取自 JWT，前端无法指定；
+//  2. 用户隔离：visibility=1 的私密文档，仅创建者、被共享者（用户/部门）可见；
+//     group_id=0 的用户沿用系统既有约定（未分配角色视为全权限），可查看全部私密文档。
+type OaDocActor struct {
+	Tid     int      // 租户ID
+	UID     uint64   // 登录用户ID（yz_system_tenant_user.uid）
+	OrgIDs  []uint64 // 所属部门及全部子部门ID
+	IsAdmin bool     // 是否全权限（group_id=0）
+}
+
+// NewOaDocActor 构造访问者上下文。
+// uid 为 backend 端 JWT 的 UserID，即 yz_system_tenant_user.uid。
+func NewOaDocActor(tid int, uid uint64) OaDocActor {
+	models.EnsureOaDocumentTables()
+	models.EnsureTenantUserOrgColumn()
+
+	actor := OaDocActor{Tid: tid, UID: uid, OrgIDs: []uint64{}}
+
+	var user models.SystemTenantUser
+	if err := models.Orm.QueryTable(new(models.SystemTenantUser)).
+		Filter("tid", tid).
+		Filter("uid", uid).
+		Filter("delete_time__isnull", true).
+		One(&user); err != nil {
+		// 查不到归属信息时退化为"普通用户"，仅能看公开文档
+		return actor
+	}
+	actor.IsAdmin = user.GroupID == 0
+	if user.OrgID > 0 {
+		actor.OrgIDs = oaDocOrgSubTree(tid, user.OrgID)
+	}
+	return actor
+}
+
+// oaDocOrgSubTree 返回指定组织及其全部子组织 ID（含自身）。
+func oaDocOrgSubTree(tid int, rootID uint64) []uint64 {
+	var orgs []models.BackendOrganization
+	if _, err := models.Orm.QueryTable(new(models.BackendOrganization)).
+		Filter("tid", tid).
+		Filter("delete_time__isnull", true).
+		All(&orgs); err != nil {
+		return []uint64{rootID}
+	}
+
+	children := make(map[uint64][]uint64, len(orgs))
+	for _, o := range orgs {
+		children[o.ParentID] = append(children[o.ParentID], o.ID)
+	}
+
+	result := []uint64{rootID}
+	var walk func(id uint64)
+	walk = func(id uint64) {
+		for _, cid := range children[id] {
+			if cid == rootID {
+				continue
+			}
+			result = append(result, cid)
+			walk(cid)
+		}
+	}
+	walk(rootID)
+	return result
+}
+
+// oaDocSharedDocIDs 查询共享给该访问者（本人或所属部门）的文档 ID。
+func oaDocSharedDocIDs(a OaDocActor) []uint64 {
+	if a.UID == 0 && len(a.OrgIDs) == 0 {
+		return nil
+	}
+	orgIDs := a.OrgIDs
+	if len(orgIDs) == 0 {
+		orgIDs = []uint64{0} // 避免 SQL 出现 IN ()
+	}
+
+	userCond := orm.NewCondition().
+		And("share_type", models.DocShareTypeUser).
+		And("target_id", a.UID)
+	orgCond := orm.NewCondition().
+		And("share_type", models.DocShareTypeOrg).
+		And("target_id__in", orgIDs)
+	cond := orm.NewCondition().
+		And("tid", a.Tid).
+		AndCond(orm.NewCondition().OrCond(userCond).OrCond(orgCond))
+
+	var rows []models.OaDocShare
+	if _, err := models.Orm.QueryTable(new(models.OaDocShare)).SetCond(cond).All(&rows); err != nil {
+		return nil
+	}
+
+	seen := make(map[uint64]bool, len(rows))
+	ids := make([]uint64, 0, len(rows))
+	for _, r := range rows {
+		if !seen[r.DocID] {
+			seen[r.DocID] = true
+			ids = append(ids, r.DocID)
+		}
+	}
+	return ids
+}
+
+// oaDocVisibleCond 生成可见性条件；管理员返回 nil 表示不限制。
+// 可见 = 公开 OR 本人创建 OR 已共享给本人/所属部门
+func oaDocVisibleCond(a OaDocActor) *orm.Condition {
+	if a.IsAdmin {
+		return nil
+	}
+	shared := oaDocSharedDocIDs(a)
+	if len(shared) == 0 {
+		shared = []uint64{0} // 避免 SQL 出现 IN ()
+	}
+	return orm.NewCondition().
+		Or("visibility", models.DocVisibilityPublic).
+		Or("creator_id", a.UID).
+		Or("id__in", shared)
+}
+
+// oaDocApplyVisible 给既有查询集叠加可见性条件（保留此前设置的过滤条件）。
+func oaDocApplyVisible(qs orm.QuerySeter, a OaDocActor) orm.QuerySeter {
+	cond := oaDocVisibleCond(a)
+	if cond == nil {
+		return qs
+	}
+	return qs.SetCond(qs.GetCond().AndCond(cond))
+}
+
+// oaDocVisibleIDSet 从给定文档 ID 中筛出当前访问者可见的部分。
+func oaDocVisibleIDSet(a OaDocActor, ids []uint64) map[uint64]bool {
+	out := make(map[uint64]bool, len(ids))
+	if len(ids) == 0 {
+		return out
+	}
+	var idList orm.ParamsList
+	qs := oaDocApplyVisible(oaDocBase(a.Tid).Filter("id__in", ids), a)
+	if _, err := qs.ValuesFlat(&idList, "Id"); err != nil {
+		return out
+	}
+	for _, v := range idList {
+		if id, err := strconv.ParseUint(fmt.Sprint(v), 10, 64); err == nil {
+			out[id] = true
+		}
+	}
+	return out
+}
+
+// oaDocCanManage 私密文档的管理权限：仅创建者与全权限用户可改删。
+// 公开文档沿用租户内共享编辑的既有行为。
+func oaDocCanManage(a OaDocActor, doc *models.OaDoc) bool {
+	if a.IsAdmin || doc.Visibility != models.DocVisibilityPrivate {
+		return true
+	}
+	return doc.CreatorID == a.UID
+}
+
+// 文档关系中文名
+var docRelationLabel = map[string]string{
+	models.DocRelationReference: "引用",
+	models.DocRelationRelated:   "相关",
+	models.DocRelationVersion:   "版本",
+	models.DocRelationBelong:    "从属",
+}
+
+// DocRelationLabel 返回关系的中文名，未知关系原样返回。
+func DocRelationLabel(relation string) string {
+	if v, ok := docRelationLabel[relation]; ok {
+		return v
+	}
+	return relation
+}
+
+// ---------------- 分类 ----------------
+
+// OaDocCategoryItem 分类树节点（附带文档数量）
+type OaDocCategoryItem struct {
+	models.OaDocCategory
+	DocCount int64                `json:"doc_count"`
+	Children []*OaDocCategoryItem `json:"children"`
+}
+
+// oaDocCategoryBase 租户内未删除分类的基础查询集
+func oaDocCategoryBase(tid int) orm.QuerySeter {
+	return models.Orm.QueryTable(new(models.OaDocCategory)).
+		Filter("tid", tid).
+		Filter("is_deleted", 0)
+}
+
+// OaDocCategoryTree 返回分类树，每个节点附带该分类下的文档数量（仅统计直属文档）。
+// 数量统计同样受可见性约束：无权限的私密文档不计入。
+func OaDocCategoryTree(a OaDocActor) ([]*OaDocCategoryItem, error) {
+	models.EnsureOaDocumentTables()
+
+	var list []models.OaDocCategory
+	if _, err := oaDocCategoryBase(a.Tid).OrderBy("sort", "id").All(&list); err != nil && err != orm.ErrNoRows {
+		return nil, err
+	}
+
+	counts, err := OaDocCountByCategory(a)
+	if err != nil {
+		return nil, err
+	}
+
+	nodes := make(map[uint64]*OaDocCategoryItem, len(list))
+	roots := make([]*OaDocCategoryItem, 0, len(list))
+	for i := range list {
+		item := &OaDocCategoryItem{
+			OaDocCategory: list[i],
+			DocCount:      counts[list[i].ID],
+			Children:      []*OaDocCategoryItem{},
+		}
+		nodes[item.ID] = item
+	}
+	for i := range list {
+		item := nodes[list[i].ID]
+		if parent, ok := nodes[list[i].ParentID]; ok && list[i].ParentID != 0 {
+			parent.Children = append(parent.Children, item)
+		} else {
+			roots = append(roots, item)
+		}
+	}
+	return roots, nil
+}
+
+// OaDocCountByCategory 统计各分类下未删除文档的数量（仅统计当前访问者可见的文档）。
+func OaDocCountByCategory(a OaDocActor) (map[uint64]int64, error) {
+	models.EnsureOaDocumentTables()
+
+	sql := "SELECT category_id, COUNT(*) AS cnt FROM yz_backend_oa_doc WHERE tid = ? AND is_deleted = 0"
+	args := []interface{}{a.Tid}
+	if !a.IsAdmin {
+		shared := oaDocSharedDocIDs(a)
+		if len(shared) == 0 {
+			shared = []uint64{0}
+		}
+		placeholders := make([]string, len(shared))
+		for i := range shared {
+			placeholders[i] = "?"
+		}
+		// 占位符顺序需与 args 一致：先 creator_id，再 IN (...)
+		args = append(args, a.UID)
+		for _, id := range shared {
+			args = append(args, id)
+		}
+		sql += fmt.Sprintf(
+			" AND (visibility = 0 OR creator_id = ? OR id IN (%s))",
+			strings.Join(placeholders, ","))
+	}
+	sql += " GROUP BY category_id"
+
+	var rows []struct {
+		CategoryID uint64 `orm:"column(category_id)"`
+		Cnt        int64  `orm:"column(cnt)"`
+	}
+	if _, err := models.Orm.Raw(sql, args...).QueryRows(&rows); err != nil {
+		return nil, err
+	}
+	result := make(map[uint64]int64, len(rows))
+	for _, r := range rows {
+		result[r.CategoryID] = r.Cnt
+	}
+	return result, nil
+}
+
+// OaDocCategoryCreate 新建分类。
+func OaDocCategoryCreate(tid int, parentID uint64, name, remark string, sort int) (*models.OaDocCategory, error) {
+	models.EnsureOaDocumentTables()
+
+	name = strings.TrimSpace(name)
+	if name == "" {
+		return nil, ErrDocCategoryNameEmpty
+	}
+	if parentID != 0 {
+		ok, err := oaDocCategoryExists(tid, parentID)
+		if err != nil {
+			return nil, err
+		}
+		if !ok {
+			return nil, ErrDocCategoryNotFound
+		}
+	}
+
+	item := &models.OaDocCategory{
+		Tid:       tid,
+		ParentID:  parentID,
+		Name:      name,
+		Remark:    strings.TrimSpace(remark),
+		Sort:      sort,
+		IsDeleted: 0,
+	}
+	if _, err := models.Orm.Insert(item); err != nil {
+		return nil, err
+	}
+	return item, nil
+}
+
+// OaDocCategoryUpdate 修改分类名称/备注/排序，parentID < 0 表示不调整父级。
+func OaDocCategoryUpdate(tid int, id uint64, name, remark string, sort int, parentID int64) (*models.OaDocCategory, error) {
+	models.EnsureOaDocumentTables()
+
+	var item models.OaDocCategory
+	if err := oaDocCategoryBase(tid).Filter("id", id).One(&item); err != nil {
+		return nil, ErrDocCategoryNotFound
+	}
+
+	fields := []string{"UpdateTime"}
+	if name = strings.TrimSpace(name); name != "" && name != item.Name {
+		item.Name = name
+		fields = append(fields, "Name")
+	}
+	if remark = strings.TrimSpace(remark); remark != item.Remark {
+		item.Remark = remark
+		fields = append(fields, "Remark")
+	}
+	if sort >= 0 && sort != item.Sort {
+		item.Sort = sort
+		fields = append(fields, "Sort")
+	}
+	if parentID >= 0 && uint64(parentID) != item.ParentID {
+		newParent := uint64(parentID)
+		if newParent == id {
+			return nil, ErrDocCategoryCircular
+		}
+		if newParent != 0 {
+			ok, err := oaDocCategoryExists(tid, newParent)
+			if err != nil {
+				return nil, err
+			}
+			if !ok {
+				return nil, ErrDocCategoryNotFound
+			}
+			// 禁止挂到自己的子孙节点下，避免形成环
+			childIDs, err := OaDocCategoryDescendants(tid, id)
+			if err != nil {
+				return nil, err
+			}
+			for _, cid := range childIDs {
+				if cid == newParent {
+					return nil, ErrDocCategoryCircular
+				}
+			}
+		}
+		item.ParentID = newParent
+		fields = append(fields, "ParentID")
+	}
+
+	if len(fields) == 1 {
+		return &item, nil
+	}
+	now := time.Now()
+	item.UpdateTime = &now
+	if _, err := models.Orm.Update(&item, fields...); err != nil {
+		return nil, err
+	}
+	return &item, nil
+}
+
+// OaDocCategoryDescendants 收集某分类的全部子孙 ID（不含自身）。
+func OaDocCategoryDescendants(tid int, rootID uint64) ([]uint64, error) {
+	var list []models.OaDocCategory
+	if _, err := oaDocCategoryBase(tid).All(&list); err != nil && err != orm.ErrNoRows {
+		return nil, err
+	}
+	children := make(map[uint64][]uint64)
+	for _, c := range list {
+		children[c.ParentID] = append(children[c.ParentID], c.ID)
+	}
+
+	result := make([]uint64, 0, len(list))
+	var walk func(id uint64)
+	walk = func(id uint64) {
+		for _, cid := range children[id] {
+			if cid == rootID {
+				continue
+			}
+			result = append(result, cid)
+			walk(cid)
+		}
+	}
+	walk(rootID)
+	return result, nil
+}
+
+// oaDocCategoryIDsWithChildren 返回指定分类及其所有子孙 ID；rootID=0 时返回 nil 表示不限制。
+func oaDocCategoryIDsWithChildren(tid int, rootID uint64) ([]uint64, error) {
+	if rootID == 0 {
+		return nil, nil
+	}
+	children, err := OaDocCategoryDescendants(tid, rootID)
+	if err != nil {
+		return nil, err
+	}
+	return append([]uint64{rootID}, children...), nil
+}
+
+// OaDocCategoryDelete 删除分类：存在子分类或文档时拒绝删除。
+func OaDocCategoryDelete(tid int, id uint64) error {
+	models.EnsureOaDocumentTables()
+
+	var item models.OaDocCategory
+	if err := oaDocCategoryBase(tid).Filter("id", id).One(&item); err != nil {
+		return ErrDocCategoryNotFound
+	}
+
+	childCount, err := oaDocCategoryBase(tid).Filter("parent_id", id).Count()
+	if err != nil {
+		return err
+	}
+	if childCount > 0 {
+		return ErrDocCategoryHasChild
+	}
+
+	docCount, err := oaDocBase(tid).Filter("category_id", id).Count()
+	if err != nil {
+		return err
+	}
+	if docCount > 0 {
+		return ErrDocCategoryHasDoc
+	}
+
+	now := time.Now()
+	_, err = oaDocCategoryBase(tid).Filter("id", id).Update(orm.Params{
+		"IsDeleted":  1,
+		"DeleteTime": now,
+		"UpdateTime": now,
+	})
+	return err
+}
+
+func oaDocCategoryExists(tid int, id uint64) (bool, error) {
+	n, err := oaDocCategoryBase(tid).Filter("id", id).Count()
+	if err != nil {
+		return false, err
+	}
+	return n > 0, nil
+}
+
+// ---------------- 文档 ----------------
+
+// oaDocBase 租户内未删除文档的基础查询集
+func oaDocBase(tid int) orm.QuerySeter {
+	return models.Orm.QueryTable(new(models.OaDoc)).
+		Filter("tid", tid).
+		Filter("is_deleted", 0)
+}
+
+// OaDocListParams 文档列表查询条件。
+// Status/DocType/Star 使用 -1 表示"全部"；CategoryID > 0 时包含其全部子孙分类。
+// Actor 为访问者上下文，用于租户内用户级可见性过滤（私密文档只对创建者/被共享者可见）。
+type OaDocListParams struct {
+	Actor        OaDocActor
+	Keyword       string
+	CategoryID    uint64
+	Uncategorized bool // true 时只看未分类（category_id = 0）的文档
+	Status        int
+	DocType       int
+	Tag           string
+	Star          int
+	Page          int
+	PageSize      int
+}
+
+// OaDocList 分页查询文档（自动应用可见性过滤）。
+func OaDocList(a OaDocActor, p OaDocListParams) ([]models.OaDoc, int64, error) {
+	models.EnsureOaDocumentTables()
+
+	qs := oaDocApplyVisible(oaDocBase(a.Tid), a)
+	if kw := strings.TrimSpace(p.Keyword); kw != "" {
+		cond := orm.NewCondition()
+		cond = cond.Or("title__icontains", kw).
+			Or("file_name__icontains", kw).
+			Or("tags__icontains", kw).
+			Or("summary__icontains", kw).
+			Or("owner_name__icontains", kw)
+		qs = qs.SetCond(qs.GetCond().AndCond(cond))
+	}
+	if p.Uncategorized {
+		qs = qs.Filter("category_id", 0)
+	} else if p.CategoryID > 0 {
+		ids, err := oaDocCategoryIDsWithChildren(a.Tid, p.CategoryID)
+		if err != nil {
+			return nil, 0, err
+		}
+		if len(ids) > 0 {
+			qs = qs.Filter("category_id__in", ids)
+		}
+	}
+	if p.Status >= 0 {
+		qs = qs.Filter("status", int8(p.Status))
+	}
+	if p.DocType >= 0 {
+		qs = qs.Filter("doc_type", int8(p.DocType))
+	}
+	if tag := strings.TrimSpace(p.Tag); tag != "" {
+		qs = qs.Filter("tags__icontains", tag)
+	}
+	if p.Star == 1 {
+		qs = qs.Filter("is_star", 1)
+	}
+
+	total, err := qs.Count()
+	if err != nil {
+		return nil, 0, err
+	}
+
+	page, pageSize := p.Page, p.PageSize
+	if page < 1 {
+		page = 1
+	}
+	if pageSize < 1 {
+		pageSize = 20
+	}
+
+	var list []models.OaDoc
+	_, err = qs.OrderBy("-is_star", "-update_time", "-id").
+		Limit(pageSize).Offset((page - 1) * pageSize).
+		All(&list)
+	if err != nil && err != orm.ErrNoRows {
+		return nil, 0, err
+	}
+	if list == nil {
+		list = []models.OaDoc{}
+	}
+	return list, total, nil
+}
+
+// OaDocGet 读取文档详情（不累加查看次数）。私密文档对无权限者返回未找到。
+func OaDocGet(a OaDocActor, id uint64) (*models.OaDoc, error) {
+	models.EnsureOaDocumentTables()
+
+	var item models.OaDoc
+	qs := oaDocApplyVisible(oaDocBase(a.Tid).Filter("id", id), a)
+	if err := qs.One(&item); err != nil {
+		return nil, ErrDocNotFound
+	}
+	return &item, nil
+}
+
+// OaDocView 读取文档详情并累加查看次数。
+func OaDocView(a OaDocActor, id uint64) (*models.OaDoc, error) {
+	item, err := OaDocGet(a, id)
+	if err != nil {
+		return nil, err
+	}
+	_, _ = models.Orm.Raw(
+		"UPDATE yz_backend_oa_doc SET view_count = view_count + 1 WHERE id = ?", id).Exec()
+	item.ViewCount++
+	return item, nil
+}
+
+// OaDocDownload 记录一次下载并回传文档（供前端拿到下载地址）。
+func OaDocDownload(a OaDocActor, id uint64) (*models.OaDoc, error) {
+	item, err := OaDocGet(a, id)
+	if err != nil {
+		return nil, err
+	}
+	_, _ = models.Orm.Raw(
+		"UPDATE yz_backend_oa_doc SET download_count = download_count + 1 WHERE id = ?", id).Exec()
+	item.DownCount++
+	return item, nil
+}
+
+// OaDocSaveParams 文档新增/编辑入参。
+// SetCategory 为 true 时才以 CategoryID 覆盖原值（允许显式改为 0 即"未分类"）。
+type OaDocSaveParams struct {
+	SetCategory bool
+	CategoryID  uint64
+	Title      string
+	FileID     uint64
+	FileURL    string
+	FileName   string
+	Ext        string
+	Size       uint64
+	Tags       string
+	Summary    string
+	Status     int8
+	Version    int
+	OwnerID    uint64
+	OwnerName  string
+	IsStar     int8
+	Visibility int8 // 0-租户公开 1-私密
+}
+
+// OaDocCreate 新增文档。
+// 若未传标题则回退为原始文件名（去扩展名）；doc_type 由扩展名推断。
+func OaDocCreate(a OaDocActor, operatorName string, p OaDocSaveParams) (*models.OaDoc, error) {
+	models.EnsureOaDocumentTables()
+	tid := a.Tid
+
+	title := strings.TrimSpace(p.Title)
+	if title == "" {
+		title = strings.TrimSpace(strings.TrimSuffix(p.FileName, "."+p.Ext))
+	}
+	if title == "" {
+		return nil, ErrDocTitleEmpty
+	}
+	if p.CategoryID > 0 {
+		ok, err := oaDocCategoryExists(tid, p.CategoryID)
+		if err != nil {
+			return nil, err
+		}
+		if !ok {
+			return nil, ErrDocCategoryInvalid
+		}
+	}
+
+	ext := strings.ToLower(strings.TrimPrefix(strings.TrimSpace(p.Ext), "."))
+	version := p.Version
+	if version < 1 {
+		version = 1
+	}
+	if p.Status < 0 || p.Status > 2 {
+		p.Status = models.DocStatusDraft
+	}
+	if p.IsStar != 1 {
+		p.IsStar = 0
+	}
+
+	item := &models.OaDoc{
+		Tid:         tid,
+		CategoryID:  p.CategoryID,
+		Title:       title,
+		FileID:      p.FileID,
+		FileURL:     strings.TrimSpace(p.FileURL),
+		FileName:    strings.TrimSpace(p.FileName),
+		Ext:         ext,
+		Size:        p.Size,
+		DocType:     models.DocTypeByExt(ext),
+		Tags:        strings.TrimSpace(p.Tags),
+		Summary:     strings.TrimSpace(p.Summary),
+		Status:      p.Status,
+		Version:     version,
+		IsStar:      p.IsStar,
+		OwnerID:     p.OwnerID,
+		OwnerName:   strings.TrimSpace(p.OwnerName),
+		CreatorID:   a.UID,
+		CreatorName: operatorName,
+		Visibility:  visibilityOf(p.Visibility),
+		IsDeleted:   0,
+	}
+	if _, err := models.Orm.Insert(item); err != nil {
+		return nil, err
+	}
+	return item, nil
+}
+
+// visibilityOf 归一化可见性取值：仅 1 视为私密，其余一律公开。
+func visibilityOf(v int8) int8 {
+	if v == 1 {
+		return 1
+	}
+	return 0
+}
+
+// OaDocUpdate 编辑文档（仅更新传入的字段）。
+func OaDocUpdate(a OaDocActor, id uint64, p OaDocSaveParams) (*models.OaDoc, error) {
+	models.EnsureOaDocumentTables()
+
+	var item models.OaDoc
+	if err := oaDocApplyVisible(oaDocBase(a.Tid).Filter("id", id), a).One(&item); err != nil {
+		return nil, ErrDocNotFound
+	}
+	if !oaDocCanManage(a, &item) {
+		return nil, ErrDocNoPermission
+	}
+
+	fields := []string{"UpdateTime"}
+	if v := visibilityOf(p.Visibility); v != item.Visibility {
+		item.Visibility = v
+		fields = append(fields, "Visibility")
+	}
+	if p.SetCategory && p.CategoryID != item.CategoryID {
+		if p.CategoryID > 0 {
+			ok, err := oaDocCategoryExists(a.Tid, p.CategoryID)
+			if err != nil {
+				return nil, err
+			}
+			if !ok {
+				return nil, ErrDocCategoryInvalid
+			}
+		}
+		item.CategoryID = p.CategoryID
+		fields = append(fields, "CategoryID")
+	}
+	if title := strings.TrimSpace(p.Title); title != "" && title != item.Title {
+		item.Title = title
+		fields = append(fields, "Title")
+	}
+	if url := strings.TrimSpace(p.FileURL); url != "" {
+		item.FileURL = url
+		fields = append(fields, "FileURL")
+		if p.FileID > 0 {
+			item.FileID = p.FileID
+			fields = append(fields, "FileID")
+		}
+		if name := strings.TrimSpace(p.FileName); name != "" {
+			item.FileName = name
+			fields = append(fields, "FileName")
+		}
+		if ext := strings.ToLower(strings.TrimPrefix(strings.TrimSpace(p.Ext), ".")); ext != "" {
+			item.Ext = ext
+			item.DocType = models.DocTypeByExt(ext)
+			fields = append(fields, "Ext", "DocType")
+		}
+		if p.Size > 0 {
+			item.Size = p.Size
+			fields = append(fields, "Size")
+		}
+	}
+	if tags := strings.TrimSpace(p.Tags); tags != item.Tags {
+		item.Tags = tags
+		fields = append(fields, "Tags")
+	}
+	if summary := strings.TrimSpace(p.Summary); summary != item.Summary {
+		item.Summary = summary
+		fields = append(fields, "Summary")
+	}
+	if p.Status >= 0 && p.Status <= 2 && p.Status != item.Status {
+		item.Status = p.Status
+		fields = append(fields, "Status")
+	}
+	if p.Version > 0 && p.Version != item.Version {
+		item.Version = p.Version
+		fields = append(fields, "Version")
+	}
+	if p.IsStar == 0 || p.IsStar == 1 {
+		if p.IsStar != item.IsStar {
+			item.IsStar = p.IsStar
+			fields = append(fields, "IsStar")
+		}
+	}
+	if p.OwnerID > 0 {
+		item.OwnerID = p.OwnerID
+		fields = append(fields, "OwnerID")
+	}
+	if owner := strings.TrimSpace(p.OwnerName); owner != "" && owner != item.OwnerName {
+		item.OwnerName = owner
+		fields = append(fields, "OwnerName")
+	}
+
+	if len(fields) == 1 {
+		return &item, nil
+	}
+	now := time.Now()
+	item.UpdateTime = &now
+	if _, err := models.Orm.Update(&item, fields...); err != nil {
+		return nil, err
+	}
+	return &item, nil
+}
+
+// OaDocDelete 批量软删除文档，并清理与被删文档相关的关联关系。
+// 仅对"可见且可管理"的文档生效；若给定 ID 全部无权操作则返回 ErrDocNoPermission。
+func OaDocDelete(a OaDocActor, ids []uint64) (int64, error) {
+	models.EnsureOaDocumentTables()
+
+	ids = normalizeIDs(ids)
+	if len(ids) == 0 {
+		return 0, ErrDocIDEmpty
+	}
+
+	var list []models.OaDoc
+	if _, err := oaDocApplyVisible(oaDocBase(a.Tid).Filter("id__in", ids), a).All(&list); err != nil && err != orm.ErrNoRows {
+		return 0, err
+	}
+	allowed := make([]uint64, 0, len(list))
+	for _, d := range list {
+		if oaDocCanManage(a, &d) {
+			allowed = append(allowed, d.ID)
+		}
+	}
+	if len(allowed) == 0 {
+		return 0, ErrDocNoPermission
+	}
+
+	now := time.Now()
+	n, err := oaDocBase(a.Tid).Filter("id__in", allowed).Update(orm.Params{
+		"IsDeleted":  1,
+		"DeleteTime": now,
+		"UpdateTime": now,
+	})
+	if err != nil {
+		return 0, err
+	}
+	// 清理被删文档参与的全部关联关系，避免图谱出现悬挂连线
+	// 注意：SetCond 会整体替换查询条件，tid 必须写进 cond，否则会误删其它租户的数据
+	cond := orm.NewCondition().
+		And("tid", a.Tid).
+		AndCond(orm.NewCondition().
+			Or("source_id__in", allowed).
+			Or("target_id__in", allowed))
+	_, _ = models.Orm.QueryTable(new(models.OaDocLink)).SetCond(cond).Delete()
+
+	return n, nil
+}
+
+// OaDocMove 批量移动文档到目标分类（0 表示未分类）。仅对可管理文档生效。
+func OaDocMove(a OaDocActor, ids []uint64, categoryID uint64) (int64, error) {
+	models.EnsureOaDocumentTables()
+
+	ids = normalizeIDs(ids)
+	if len(ids) == 0 {
+		return 0, ErrDocIDEmpty
+	}
+	if categoryID > 0 {
+		ok, err := oaDocCategoryExists(a.Tid, categoryID)
+		if err != nil {
+			return 0, err
+		}
+		if !ok {
+			return 0, ErrDocCategoryInvalid
+		}
+	}
+
+	var list []models.OaDoc
+	if _, err := oaDocApplyVisible(oaDocBase(a.Tid).Filter("id__in", ids), a).All(&list); err != nil && err != orm.ErrNoRows {
+		return 0, err
+	}
+	allowed := make([]uint64, 0, len(list))
+	for _, d := range list {
+		if oaDocCanManage(a, &d) {
+			allowed = append(allowed, d.ID)
+		}
+	}
+	if len(allowed) == 0 {
+		return 0, ErrDocNoPermission
+	}
+
+	now := time.Now()
+	return oaDocBase(a.Tid).Filter("id__in", allowed).Update(orm.Params{
+		"CategoryID": categoryID,
+		"UpdateTime": now,
+	})
+}
+
+// OaDocToggleStar 收藏 / 取消收藏切换，返回切换后的状态。
+func OaDocToggleStar(a OaDocActor, id uint64) (int8, error) {
+	models.EnsureOaDocumentTables()
+
+	var item models.OaDoc
+	if err := oaDocApplyVisible(oaDocBase(a.Tid).Filter("id", id), a).One(&item); err != nil {
+		return 0, ErrDocNotFound
+	}
+	if item.IsStar == 1 {
+		item.IsStar = 0
+	} else {
+		item.IsStar = 1
+	}
+	if _, err := models.Orm.Update(&item, "IsStar"); err != nil {
+		return 0, err
+	}
+	return item.IsStar, nil
+}
+
+// OaDocStatsResult 文档库概览统计
+type OaDocStatsResult struct {
+	Total         int64            `json:"total"`
+	Published     int64            `json:"published"`
+	Draft         int64            `json:"draft"`
+	Archived      int64            `json:"archived"`
+	Starred       int64            `json:"starred"`
+	Uncategorized int64            `json:"uncategorized"`
+	LinkCount     int64            `json:"link_count"`
+	TypeCounts    []OaDocTypeCount `json:"type_counts"`
+	RecentDocs    []models.OaDoc   `json:"recent_docs"`
+	HotDocs       []models.OaDoc   `json:"hot_docs"`
+}
+
+// OaDocTypeCount 按文档类型统计
+type OaDocTypeCount struct {
+	DocType int8  `json:"doc_type"`
+	Count   int64 `json:"count"`
+}
+
+// OaDocStats 文档库概览：总数、状态分布、类型分布、最近更新与热门文档（均受可见性约束）。
+func OaDocStats(a OaDocActor) (*OaDocStatsResult, error) {
+	models.EnsureOaDocumentTables()
+
+	base := oaDocApplyVisible(oaDocBase(a.Tid), a)
+	total, _ := base.Count()
+	published, _ := base.Filter("status", models.DocStatusPublish).Count()
+	draft, _ := base.Filter("status", models.DocStatusDraft).Count()
+	archived, _ := base.Filter("status", models.DocStatusArchive).Count()
+	starred, _ := base.Filter("is_star", 1).Count()
+	uncategorized, _ := base.Filter("category_id", 0).Count()
+	linkCount, _ := models.Orm.QueryTable(new(models.OaDocLink)).Filter("tid", a.Tid).Count()
+
+	var rows []struct {
+		DocType int8  `orm:"column(doc_type)"`
+		Cnt     int64 `orm:"column(cnt)"`
+	}
+	_, _ = models.Orm.Raw(
+		"SELECT doc_type, COUNT(*) AS cnt FROM yz_backend_oa_doc WHERE tid = ? AND is_deleted = 0 GROUP BY doc_type ORDER BY cnt DESC",
+		a.Tid).QueryRows(&rows)
+	typeCounts := make([]OaDocTypeCount, 0, len(rows))
+	for _, r := range rows {
+		typeCounts = append(typeCounts, OaDocTypeCount{DocType: r.DocType, Count: r.Cnt})
+	}
+
+	var recent []models.OaDoc
+	_, _ = base.OrderBy("-update_time", "-id").Limit(8).All(&recent)
+	if recent == nil {
+		recent = []models.OaDoc{}
+	}
+	var hot []models.OaDoc
+	_, _ = base.OrderBy("-view_count", "-id").Limit(8).All(&hot)
+	if hot == nil {
+		hot = []models.OaDoc{}
+	}
+
+	return &OaDocStatsResult{
+		Total:         total,
+		Published:     published,
+		Draft:         draft,
+		Archived:      archived,
+		Starred:       starred,
+		Uncategorized: uncategorized,
+		LinkCount:     linkCount,
+		TypeCounts:    typeCounts,
+		RecentDocs:    recent,
+		HotDocs:       hot,
+	}, nil
+}
+
+// ---------------- 文档关联 ----------------
+
+// OaDocLinkItem 关联关系 + 两端文档标题，便于前端直接展示
+type OaDocLinkItem struct {
+	ID         uint64    `json:"id"`
+	Tid        int       `json:"tid"`
+	SourceID   uint64    `json:"source_id"`
+	TargetID   uint64    `json:"target_id"`
+	Relation   string    `json:"relation"`
+	RelationCN string    `json:"relation_cn"`
+	Remark     string    `json:"remark"`
+	CreateTime time.Time `json:"create_time"`
+
+	SourceTitle string `json:"source_title"`
+	TargetTitle string `json:"target_title"`
+}
+
+// OaDocLinkCreate 建立两个文档之间的关联。
+func OaDocLinkCreate(a OaDocActor, creatorID, sourceID, targetID uint64, relation, remark string) (*models.OaDocLink, error) {
+	models.EnsureOaDocumentTables()
+	tid := a.Tid
+
+	if sourceID == 0 || targetID == 0 {
+		return nil, ErrDocNotFound
+	}
+	if sourceID == targetID {
+		return nil, ErrDocLinkSelf
+	}
+	relation = strings.TrimSpace(relation)
+	if relation == "" {
+		relation = models.DocRelationRelated
+	}
+
+	for _, id := range []uint64{sourceID, targetID} {
+		// 关联两端文档必须对当前访问者可见，避免私密文档被越权串接
+		if _, err := OaDocGet(a, id); err != nil {
+			return nil, ErrDocLinkTargetNotFound
+		}
+	}
+
+	qs := models.Orm.QueryTable(new(models.OaDocLink)).
+		Filter("tid", tid).
+		Filter("source_id", sourceID).
+		Filter("target_id", targetID).
+		Filter("relation", relation)
+	if qs.Exist() {
+		return nil, ErrDocLinkDuplicate
+	}
+
+	item := &models.OaDocLink{
+		Tid:       tid,
+		SourceID:  sourceID,
+		TargetID:  targetID,
+		Relation:  relation,
+		Remark:    strings.TrimSpace(remark),
+		CreatorID: creatorID,
+	}
+	if _, err := models.Orm.Insert(item); err != nil {
+		return nil, err
+	}
+
+	// 反向补一条同类关系，使图谱连线无向展示
+	reverse := *item
+	reverse.ID = 0
+	reverse.SourceID, reverse.TargetID = targetID, sourceID
+	if _, err := models.Orm.Insert(&reverse); err != nil {
+		// 唯一索引冲突说明反向关系已存在，忽略即可
+		_ = err
+	}
+	return item, nil
+}
+
+// OaDocLinkDelete 删除关联关系（同时清理反向关系，保证图谱双向一致）。
+func OaDocLinkDelete(a OaDocActor, id uint64) error {
+	models.EnsureOaDocumentTables()
+	tid := a.Tid
+
+	var item models.OaDocLink
+	if err := models.Orm.QueryTable(new(models.OaDocLink)).
+		Filter("tid", tid).Filter("id", id).One(&item); err != nil {
+		return ErrDocLinkNotFound
+	}
+	// 关联两端文档必须对当前访问者可见，避免私密文档被越权解除关联
+	if _, err := OaDocGet(a, item.SourceID); err != nil {
+		return ErrDocNoPermission
+	}
+	if _, err := OaDocGet(a, item.TargetID); err != nil {
+		return ErrDocNoPermission
+	}
+
+	// SetCond 会整体替换查询条件，tid 必须写进 cond
+	forward := orm.NewCondition().
+		And("source_id", item.SourceID).
+		And("target_id", item.TargetID).
+		And("relation", item.Relation)
+	backward := orm.NewCondition().
+		And("source_id", item.TargetID).
+		And("target_id", item.SourceID).
+		And("relation", item.Relation)
+	cond := orm.NewCondition().
+		And("tid", tid).
+		AndCond(orm.NewCondition().OrCond(forward).OrCond(backward))
+	_, err := models.Orm.QueryTable(new(models.OaDocLink)).SetCond(cond).Delete()
+	return err
+}
+
+// OaDocLinkList 查询与某文档相关的全部关联（含反向），all 为 true 时返回租户全部关联。
+// 仅返回两端文档对当前访问者均可见的关联，避免私密文档被越权探查。
+func OaDocLinkList(a OaDocActor, docID uint64, all bool) ([]OaDocLinkItem, error) {
+	models.EnsureOaDocumentTables()
+
+	sql := `
+SELECT l.id, l.tid, l.source_id, l.target_id, l.relation, l.remark, l.create_time,
+       IFNULL(s.title, '') AS source_title, IFNULL(t.title, '') AS target_title
+FROM yz_backend_oa_doc_link l
+LEFT JOIN yz_backend_oa_doc s ON s.id = l.source_id AND s.is_deleted = 0
+LEFT JOIN yz_backend_oa_doc t ON t.id = l.target_id AND t.is_deleted = 0
+`
+	args := []interface{}{}
+	if all {
+		sql += "WHERE l.tid = ? ORDER BY l.id DESC LIMIT 500"
+		args = append(args, a.Tid)
+	} else {
+		sql += "WHERE l.tid = ? AND (l.source_id = ? OR l.target_id = ?) ORDER BY l.id DESC LIMIT 200"
+		args = append(args, a.Tid, docID, docID)
+	}
+
+	var rows []OaDocLinkItem
+	if _, err := models.Orm.Raw(sql, args...).QueryRows(&rows); err != nil {
+		return nil, err
+	}
+
+	// 收集所有涉及的文档 ID，批量判定可见性后过滤
+	endpointIDs := make([]uint64, 0, len(rows)*2)
+	seen := make(map[uint64]bool, len(rows)*2)
+	for _, r := range rows {
+		if !seen[r.SourceID] {
+			seen[r.SourceID] = true
+			endpointIDs = append(endpointIDs, r.SourceID)
+		}
+		if !seen[r.TargetID] {
+			seen[r.TargetID] = true
+			endpointIDs = append(endpointIDs, r.TargetID)
+		}
+	}
+	visible := oaDocVisibleIDSet(a, endpointIDs)
+
+	out := make([]OaDocLinkItem, 0, len(rows))
+	for _, r := range rows {
+		if !visible[r.SourceID] || !visible[r.TargetID] {
+			continue
+		}
+		r.RelationCN = DocRelationLabel(r.Relation)
+		out = append(out, r)
+	}
+	if out == nil {
+		out = []OaDocLinkItem{}
+	}
+	return out, nil
+}
+
+// ---------------- 文档共享（私密文档可见性授权） ----------------
+
+// OaDocShareItem 共享目标项（创建/更新入参）。
+type OaDocShareItem struct {
+	ShareType int8   `json:"share_type"` // 0-用户 1-部门
+	TargetID  uint64 `json:"target_id"`
+}
+
+// OaDocShareView 共享项视图（含目标名称）。
+type OaDocShareView struct {
+	ID         uint64 `json:"id"`
+	DocID      uint64 `json:"doc_id"`
+	ShareType  int8   `json:"share_type"`
+	TargetID   uint64 `json:"target_id"`
+	TargetName string `json:"target_name"`
+}
+
+// OaDocShareList 读取文档的共享清单（仅可见文档）。
+func OaDocShareList(a OaDocActor, docID uint64) ([]OaDocShareView, error) {
+	if _, err := OaDocGet(a, docID); err != nil {
+		return nil, err
+	}
+	var rows []models.OaDocShare
+	if _, err := models.Orm.QueryTable(new(models.OaDocShare)).
+		Filter("tid", a.Tid).Filter("doc_id", docID).OrderBy("id").All(&rows); err != nil && err != orm.ErrNoRows {
+		return nil, err
+	}
+	views := make([]OaDocShareView, 0, len(rows))
+	for _, r := range rows {
+		views = append(views, OaDocShareView{
+			ID:         r.ID,
+			DocID:      r.DocID,
+			ShareType:  r.ShareType,
+			TargetID:   r.TargetID,
+			TargetName: oaDocShareTargetName(a.Tid, r.ShareType, r.TargetID),
+		})
+	}
+	if views == nil {
+		views = []OaDocShareView{}
+	}
+	return views, nil
+}
+
+// oaDocShareTargetName 解析共享目标名称（用户姓名 / 部门名称）。
+func oaDocShareTargetName(tid int, shareType int8, targetID uint64) string {
+	if targetID == 0 {
+		return ""
+	}
+	if shareType == models.DocShareTypeOrg {
+		var org models.BackendOrganization
+		if err := models.Orm.QueryTable(new(models.BackendOrganization)).
+			Filter("tid", tid).Filter("id", targetID).One(&org); err == nil {
+			return org.OrgName
+		}
+		return ""
+	}
+	var u models.SystemTenantUser
+	if err := models.Orm.QueryTable(new(models.SystemTenantUser)).
+		Filter("tid", tid).Filter("uid", targetID).Filter("delete_time__isnull", true).One(&u); err == nil {
+		if u.Name != nil {
+			return *u.Name
+		}
+	}
+	return ""
+}
+
+// OaDocShareSet 全量替换文档的共享授权：仅创建者或全权限用户可设置。
+func OaDocShareSet(a OaDocActor, docID uint64, items []OaDocShareItem) ([]OaDocShareView, error) {
+	doc, err := OaDocGet(a, docID)
+	if err != nil {
+		return nil, err
+	}
+	if !oaDocCanManage(a, doc) {
+		return nil, ErrDocNoPermission
+	}
+
+	seen := make(map[string]bool, len(items))
+	clean := make([]OaDocShareItem, 0, len(items))
+	for _, it := range items {
+		if it.TargetID == 0 {
+			continue
+		}
+		st := it.ShareType
+		if st != models.DocShareTypeUser && st != models.DocShareTypeOrg {
+			st = models.DocShareTypeUser
+		}
+		key := fmt.Sprintf("%d_%d", st, it.TargetID)
+		if seen[key] {
+			continue
+		}
+		seen[key] = true
+		clean = append(clean, OaDocShareItem{ShareType: st, TargetID: it.TargetID})
+	}
+
+	// 全量替换：先清空再写入
+	if _, err := models.Orm.QueryTable(new(models.OaDocShare)).
+		Filter("tid", a.Tid).Filter("doc_id", docID).Delete(); err != nil {
+		return nil, err
+	}
+	for _, it := range clean {
+		rec := models.OaDocShare{
+			Tid:       a.Tid,
+			DocID:     docID,
+			ShareType: it.ShareType,
+			TargetID:  it.TargetID,
+			CreatorID: a.UID,
+		}
+		if _, err := models.Orm.Insert(&rec); err != nil {
+			return nil, err
+		}
+	}
+	return OaDocShareList(a, docID)
+}
+
+// OaDocShareRemove 删除单条共享授权（需对文档可管理）。
+func OaDocShareRemove(a OaDocActor, id uint64) error {
+	var item models.OaDocShare
+	if err := models.Orm.QueryTable(new(models.OaDocShare)).
+		Filter("tid", a.Tid).Filter("id", id).One(&item); err != nil {
+		return ErrDocLinkNotFound
+	}
+	doc, err := OaDocGet(a, item.DocID)
+	if err != nil {
+		return err
+	}
+	if !oaDocCanManage(a, doc) {
+		return ErrDocNoPermission
+	}
+	_, err = models.Orm.QueryTable(new(models.OaDocShare)).
+		Filter("tid", a.Tid).Filter("id", id).Delete()
+	return err
+}
+
+// OaDocMemberItem 租户用户（供文档共享选人）。
+type OaDocMemberItem struct {
+	UID     uint64 `json:"uid"`
+	Name    string `json:"name"`
+	Account string `json:"account"`
+	OrgID   uint64 `json:"org_id"`
+	OrgName string `json:"org_name"`
+}
+
+// OaDocMembers 查询租户内用户（用于私密文档共享选人）。
+func OaDocMembers(tid int, keyword string, limit int) ([]OaDocMemberItem, error) {
+	models.EnsureOaDocumentTables()
+	if limit < 1 || limit > 200 {
+		limit = 100
+	}
+	qs := models.Orm.QueryTable(new(models.SystemTenantUser)).
+		Filter("tid", tid).
+		Filter("status", 1).
+		Filter("delete_time__isnull", true)
+	if kw := strings.TrimSpace(keyword); kw != "" {
+		cond := orm.NewCondition().
+			Or("name__icontains", kw).
+			Or("account__icontains", kw)
+		qs = qs.SetCond(qs.GetCond().AndCond(cond))
+	}
+	var users []models.SystemTenantUser
+	if _, err := qs.OrderBy("-id").Limit(limit).All(&users); err != nil && err != orm.ErrNoRows {
+		return nil, err
+	}
+	orgIDs := make([]uint64, 0, len(users))
+	for _, u := range users {
+		if u.OrgID > 0 {
+			orgIDs = append(orgIDs, u.OrgID)
+		}
+	}
+	orgName := make(map[uint64]string, len(orgIDs))
+	if len(orgIDs) > 0 {
+		var orgs []models.BackendOrganization
+		if _, err := models.Orm.QueryTable(new(models.BackendOrganization)).
+			Filter("tid", tid).Filter("id__in", orgIDs).All(&orgs); err == nil {
+			for _, o := range orgs {
+				orgName[o.ID] = o.OrgName
+			}
+		}
+	}
+	out := make([]OaDocMemberItem, 0, len(users))
+	for _, u := range users {
+		name := ""
+		if u.Name != nil {
+			name = *u.Name
+		}
+		account := ""
+		if u.Account != nil {
+			account = *u.Account
+		}
+		out = append(out, OaDocMemberItem{
+			UID:     u.Uid,
+			Name:    name,
+			Account: account,
+			OrgID:   u.OrgID,
+			OrgName: orgName[u.OrgID],
+		})
+	}
+	if out == nil {
+		out = []OaDocMemberItem{}
+	}
+	return out, nil
+}
+
+// ---------------- 文档图谱 ----------------
+
+// OaDocGraphParams 图谱查询条件
+type OaDocGraphParams struct {
+	Keyword         string
+	CategoryID      uint64
+	Relation        string
+	IncludeCategory bool
+	OnlyLinked      bool
+	Limit           int
+}
+
+// OaDocGraphNode 图谱节点；Category=0 文档，Category=1 分类
+type OaDocGraphNode struct {
+	ID         string `json:"id"`
+	Name       string `json:"name"`
+	Category   int    `json:"category"`
+	DocID      uint64 `json:"doc_id"`
+	CategoryID uint64 `json:"category_id"`
+	Ext        string `json:"ext"`
+	DocType    int8   `json:"doc_type"`
+	Status     int8   `json:"status"`
+	Tags       string `json:"tags"`
+	OwnerName  string `json:"owner_name"`
+	ViewCount  int    `json:"view_count"`
+	Degree     int    `json:"degree"`
+	Value      int    `json:"value"`
+}
+
+// OaDocGraphLink 图谱连线；Kind=doc 为文档关联，Kind=belong 为文档归属分类
+type OaDocGraphLink struct {
+	Source   string `json:"source"`
+	Target   string `json:"target"`
+	Relation string `json:"relation"`
+	Remark   string `json:"remark"`
+	Label    string `json:"label"`
+	Kind     string `json:"kind"`
+}
+
+// OaDocRelationCount 关系类型分布
+type OaDocRelationCount struct {
+	Relation string `json:"relation"`
+	Label    string `json:"label"`
+	Count    int64  `json:"count"`
+}
+
+// OaDocGraphStats 图谱概览统计
+type OaDocGraphStats struct {
+	DocCount       int64               `json:"doc_count"`
+	LinkCount      int64               `json:"link_count"`
+	CategoryCount  int64               `json:"category_count"`
+	IsolatedCount  int64               `json:"isolated_count"`
+	AvgDegree      float64             `json:"avg_degree"`
+	RelationCounts []OaDocRelationCount `json:"relation_counts"`
+	TopNodes       []OaDocGraphNode    `json:"top_nodes"`
+}
+
+// OaDocGraphResult 图谱数据
+type OaDocGraphResult struct {
+	Nodes      []OaDocGraphNode `json:"nodes"`
+	Links      []OaDocGraphLink `json:"links"`
+	Categories []string         `json:"categories"`
+	Stats      OaDocGraphStats  `json:"stats"`
+}
+
+// OaDocGraph 构建文档知识图谱。
+//
+// 节点包含文档与（可选）分类中心；连线包含：
+//   - kind=doc    ：文档之间的关联关系（yz_backend_oa_doc_link）
+//   - kind=belong ：文档到所属分类的归属关系，使孤立文档也能在图谱中定位
+func OaDocGraph(a OaDocActor, p OaDocGraphParams) (*OaDocGraphResult, error) {
+	models.EnsureOaDocumentTables()
+
+	limit := p.Limit
+	if limit < 1 || limit > 1000 {
+		limit = 300
+	}
+
+	docs, _, err := OaDocList(a, OaDocListParams{
+		Actor:     a,
+		Keyword:    p.Keyword,
+		CategoryID: p.CategoryID,
+		Status:     -1,
+		DocType:    -1,
+		Star:       -1,
+		Page:       1,
+		PageSize:   limit,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	docIDs := make([]uint64, 0, len(docs))
+	for _, d := range docs {
+		docIDs = append(docIDs, d.ID)
+	}
+
+	nodes := make([]OaDocGraphNode, 0, len(docs)+8)
+	links := make([]OaDocGraphLink, 0, len(docs)*2)
+	degree := make(map[string]int)
+
+	for _, d := range docs {
+		nodes = append(nodes, OaDocGraphNode{
+			ID:         fmt.Sprintf("d%d", d.ID),
+			Name:       d.Title,
+			Category:   0,
+			DocID:      d.ID,
+			CategoryID: d.CategoryID,
+			Ext:        d.Ext,
+			DocType:    d.DocType,
+			Status:     d.Status,
+			Tags:       d.Tags,
+			OwnerName:  d.OwnerName,
+			ViewCount:  d.ViewCount,
+		})
+	}
+
+	// 文档之间的关联连线
+	if len(docIDs) > 0 {
+		// SetCond 会整体替换查询条件，tid 必须写进 cond
+		cond := orm.NewCondition().
+			And("tid", a.Tid).
+			And("source_id__in", docIDs).
+			And("target_id__in", docIDs)
+		qs := models.Orm.QueryTable(new(models.OaDocLink)).SetCond(cond)
+		if rel := strings.TrimSpace(p.Relation); rel != "" {
+			qs = qs.Filter("relation", rel)
+		}
+		var linkList []models.OaDocLink
+		if _, err := qs.OrderBy("id").All(&linkList); err != nil && err != orm.ErrNoRows {
+			return nil, err
+		}
+		for _, l := range linkList {
+			// 双向各存一条，按 id 去重避免出现两条重复连线
+			if l.SourceID > l.TargetID {
+				continue
+			}
+			links = append(links, OaDocGraphLink{
+				Source:   fmt.Sprintf("d%d", l.SourceID),
+				Target:   fmt.Sprintf("d%d", l.TargetID),
+				Relation: l.Relation,
+				Remark:   l.Remark,
+				Label:    DocRelationLabel(l.Relation),
+				Kind:     "doc",
+			})
+			degree[fmt.Sprintf("d%d", l.SourceID)]++
+			degree[fmt.Sprintf("d%d", l.TargetID)]++
+		}
+	}
+
+	// 归属分类连线 + 分类中心节点
+	categoryCount := int64(0)
+	if p.IncludeCategory {
+		var cats []models.OaDocCategory
+		if _, err := oaDocCategoryBase(a.Tid).OrderBy("sort", "id").All(&cats); err != nil && err != orm.ErrNoRows {
+			return nil, err
+		}
+		categoryCount = int64(len(cats))
+
+		used := make(map[uint64]bool, len(cats))
+		for _, d := range docs {
+			if d.CategoryID == 0 {
+				continue
+			}
+			used[d.CategoryID] = true
+			links = append(links, OaDocGraphLink{
+				Source:   fmt.Sprintf("d%d", d.ID),
+				Target:   fmt.Sprintf("c%d", d.CategoryID),
+				Relation: models.DocRelationBelong,
+				Label:    DocRelationLabel(models.DocRelationBelong),
+				Kind:     "belong",
+			})
+			degree[fmt.Sprintf("d%d", d.ID)]++
+			degree[fmt.Sprintf("c%d", d.CategoryID)]++
+		}
+		for _, c := range cats {
+			if !used[c.ID] {
+				continue
+			}
+			nodes = append(nodes, OaDocGraphNode{
+				ID:         fmt.Sprintf("c%d", c.ID),
+				Name:       c.Name,
+				Category:   1,
+				CategoryID: c.ID,
+			})
+		}
+	}
+
+	// 仅看有关系的文档：剔除孤立节点
+	if p.OnlyLinked {
+		kept := make([]OaDocGraphNode, 0, len(nodes))
+		for _, n := range nodes {
+			if degree[n.ID] > 0 {
+				kept = append(kept, n)
+			}
+		}
+		nodes = kept
+	}
+
+	for i := range nodes {
+		nodes[i].Degree = degree[nodes[i].ID]
+		nodes[i].Value = degree[nodes[i].ID] + 1
+	}
+
+	// 统计
+	stats := OaDocGraphStats{
+		DocCount:      int64(len(docs)),
+		CategoryCount: categoryCount,
+	}
+	isolated := int64(0)
+	for _, n := range nodes {
+		if n.Category == 0 && n.Degree == 0 {
+			isolated++
+		}
+	}
+	stats.IsolatedCount = isolated
+	docLinkCount := int64(0)
+	for _, l := range links {
+		if l.Kind == "doc" {
+			docLinkCount++
+		}
+	}
+	stats.LinkCount = docLinkCount
+	if len(docs) > 0 {
+		stats.AvgDegree = float64(docLinkCount*2) / float64(len(docs))
+	}
+
+	// 关系分布直接由已可见的关联连线统计（每条去重连线计 1，与图谱展示一致）
+	relCountMap := make(map[string]int64, 4)
+	for _, l := range links {
+		if l.Kind != "doc" {
+			continue
+		}
+		relCountMap[l.Relation]++
+	}
+	stats.RelationCounts = make([]OaDocRelationCount, 0, len(relCountMap))
+	for rel, cnt := range relCountMap {
+		stats.RelationCounts = append(stats.RelationCounts, OaDocRelationCount{
+			Relation: rel,
+			Label:    DocRelationLabel(rel),
+			Count:    cnt,
+		})
+	}
+	sort.Slice(stats.RelationCounts, func(i, j int) bool {
+		return stats.RelationCounts[i].Count > stats.RelationCounts[j].Count
+	})
+
+	sorted := make([]OaDocGraphNode, 0, len(nodes))
+	for _, n := range nodes {
+		if n.Category == 0 {
+			sorted = append(sorted, n)
+		}
+	}
+	for i := 0; i < len(sorted); i++ {
+		for j := i + 1; j < len(sorted); j++ {
+			if sorted[j].Degree > sorted[i].Degree {
+				sorted[i], sorted[j] = sorted[j], sorted[i]
+			}
+		}
+	}
+	if len(sorted) > 8 {
+		sorted = sorted[:8]
+	}
+	stats.TopNodes = sorted
+
+	return &OaDocGraphResult{
+		Nodes:      nodes,
+		Links:      links,
+		Categories: []string{"文档", "分类"},
+		Stats:      stats,
+	}, nil
+}
+
+// normalizeIDs 过滤无效 ID 并去重
+func normalizeIDs(ids []uint64) []uint64 {
+	seen := make(map[uint64]bool, len(ids))
+	result := make([]uint64, 0, len(ids))
+	for _, id := range ids {
+		if id > 0 && !seen[id] {
+			seen[id] = true
+			result = append(result, id)
+		}
+	}
+	return result
+}
diff --git a/platform/src/views/basicSettings/tenants/components/TenantUsersTab.vue b/platform/src/views/basicSettings/tenants/components/TenantUsersTab.vue
index 4411b7d..fdf16ce 100644
--- a/platform/src/views/basicSettings/tenants/components/TenantUsersTab.vue
+++ b/platform/src/views/basicSettings/tenants/components/TenantUsersTab.vue
@@ -28,6 +28,11 @@
       <el-table-column prop="name" label="姓名" min-width="120" align="center" />
       <el-table-column prop="phone" label="手机号" min-width="140" align="center" />
       <el-table-column prop="email" label="邮箱" min-width="180" align="center" />
+      <el-table-column prop="org_id" label="部门" min-width="160" align="center">
+        <template #default="{ row }">
+          {{ orgNameMap[Number(row.org_id)] || (Number(row.org_id) ? `部门${row.org_id}` : "未分配") }}
+        </template>
+      </el-table-column>
       <el-table-column prop="status" label="状态" width="90" align="center">
         <template #default="{ row }">
           <el-tag :type="Number(row.status) === 1 ? 'success' : 'danger'">
@@ -35,8 +40,9 @@
           </el-tag>
         </template>
       </el-table-column>
-      <el-table-column label="操作" width="260" align="center" fixed="right">
+      <el-table-column label="操作" width="320" align="center" fixed="right">
         <template #default="{ row }">
+          <el-button text type="primary" @click="openEditDialog(row)">编辑</el-button>
           <el-button text type="primary" @click="openPasswordDialog(row)">
             修改密码
           </el-button>
@@ -54,6 +60,45 @@
 
     <AddUser ref="addUserRef" @success="refreshTenantUsers" />
 
+    <el-dialog v-model="editDialogVisible" title="编辑用户" width="520px" destroy-on-close>
+      <el-form :model="editForm" label-width="90px">
+        <el-form-item label="用户名">
+          <el-input v-model="editForm.account" disabled />
+        </el-form-item>
+        <el-form-item label="姓名">
+          <el-input v-model="editForm.name" placeholder="请输入姓名" />
+        </el-form-item>
+        <el-form-item label="手机号">
+          <el-input v-model="editForm.phone" placeholder="请输入手机号" />
+        </el-form-item>
+        <el-form-item label="邮箱">
+          <el-input v-model="editForm.email" placeholder="请输入邮箱" />
+        </el-form-item>
+        <el-form-item label="状态">
+          <el-radio-group v-model="editForm.status">
+            <el-radio :label="1">启用</el-radio>
+            <el-radio :label="0">禁用</el-radio>
+          </el-radio-group>
+        </el-form-item>
+        <el-form-item label="所属部门">
+          <el-tree-select
+            v-model="editForm.org_id"
+            :data="orgTree"
+            :props="{ label: 'label', value: 'value', children: 'children' }"
+            value-key="value"
+            placeholder="请选择所属部门（用于文档私密共享按部门可见）"
+            clearable
+            check-strictly
+            style="width: 100%"
+          />
+        </el-form-item>
+      </el-form>
+      <template #footer>
+        <el-button @click="editDialogVisible = false">取消</el-button>
+        <el-button type="primary" :loading="editSubmitting" @click="submitEdit">确定</el-button>
+      </template>
+    </el-dialog>
+
     <el-dialog v-model="passwordDialogVisible" title="修改密码" width="420px" destroy-on-close>
       <el-form ref="passwordFormRef" :model="passwordForm" :rules="passwordRules" label-width="90px">
         <el-form-item label="新密码" prop="password">
@@ -76,6 +121,7 @@ import { ref, reactive, watch } from "vue";
 import { ElMessage, ElMessageBox } from "element-plus";
 import { Plus } from "@element-plus/icons-vue";
 import { getTenantUserList, editTenantUser, deleteTenantUser } from "@/api/tenantUser";
+import { getOrganizationList } from "@/api/erp";
 import AddUser from "./adduser.vue";
 
 const props = defineProps<{
@@ -88,6 +134,21 @@ const usersLoading = ref(false);
 const userSearchKeyword = ref("");
 const addUserRef = ref<{ open: (tenantId: number) => void } | null>(null);
 
+const orgTree = ref<any[]>([]);
+const orgNameMap = ref<Record<number, string>>({});
+
+const editDialogVisible = ref(false);
+const editSubmitting = ref(false);
+const editForm = reactive({
+  id: 0,
+  account: "",
+  name: "",
+  phone: "",
+  email: "",
+  status: 1,
+  org_id: undefined as number | undefined,
+});
+
 const passwordDialogVisible = ref(false);
 const passwordSubmitting = ref(false);
 const currentTenantUserId = ref<number | null>(null);
@@ -122,6 +183,41 @@ const buildTenantUserQuery = (tid: number) => {
   return params;
 };
 
+// 将平铺的组织机构列表转换为树结构，供部门选择器使用
+const buildOrgTree = (list: any[]): any[] => {
+  const nodes = (list || []).map((o) => ({
+    value: Number(o.id),
+    label: o.org_name || o.name || `部门${o.id}`,
+    parent_id: Number(o.parent_id || 0),
+  }));
+  const map = new Map<number, any>();
+  nodes.forEach((n) => map.set(n.value, { ...n, children: [] as any[] }));
+  const tree: any[] = [];
+  map.forEach((node) => {
+    const parent = map.get(node.parent_id);
+    if (parent) parent.children.push(node);
+    else tree.push(node);
+  });
+  return tree;
+};
+
+const loadOrgs = async () => {
+  try {
+    const res = await getOrganizationList();
+    if (res?.code === 200) {
+      const list = res?.data?.list || res?.data || [];
+      orgTree.value = buildOrgTree(list);
+      const nameMap: Record<number, string> = {};
+      (list || []).forEach((o: any) => {
+        nameMap[Number(o.id)] = o.org_name || o.name || `部门${o.id}`;
+      });
+      orgNameMap.value = nameMap;
+    }
+  } catch {
+    orgTree.value = [];
+  }
+};
+
 const refreshTenantUsers = async () => {
   const id = props.tid;
   if (id == null) return;
@@ -160,6 +256,7 @@ watch(
   () => props.tid,
   (id) => {
     userSearchKeyword.value = "";
+    loadOrgs();
     if (id == null) {
       tenantUsers.value = [];
       return;
@@ -191,6 +288,42 @@ const openPasswordDialog = (row: any) => {
   passwordDialogVisible.value = true;
 };
 
+const openEditDialog = (row: any) => {
+  editForm.id = Number(row?.id || 0);
+  editForm.account = row?.account || "";
+  editForm.name = row?.name || "";
+  editForm.phone = row?.phone || "";
+  editForm.email = row?.email || "";
+  editForm.status = Number(row?.status ?? 1) === 1 ? 1 : 0;
+  editForm.org_id = row?.org_id ? Number(row.org_id) : undefined;
+  editDialogVisible.value = true;
+};
+
+const submitEdit = async () => {
+  if (!editForm.id) return;
+  editSubmitting.value = true;
+  try {
+    const res = await editTenantUser(editForm.id, {
+      name: editForm.name,
+      phone: editForm.phone,
+      email: editForm.email,
+      status: editForm.status,
+      org_id: editForm.org_id || 0,
+    });
+    if (res.code === 200) {
+      ElMessage.success("保存成功");
+      editDialogVisible.value = false;
+      refreshTenantUsers();
+    } else {
+      ElMessage.error(res.msg || "保存失败");
+    }
+  } catch (e: any) {
+    ElMessage.error(e?.message || "保存失败");
+  } finally {
+    editSubmitting.value = false;
+  }
+};
+
 const submitPassword = async () => {
   if (!passwordFormRef.value || !currentTenantUserId.value) return;
 
diff --git a/platform/src/views/basicSettings/tenants/components/adduser.vue b/platform/src/views/basicSettings/tenants/components/adduser.vue
index e2f7f6a..7ca93de 100644
--- a/platform/src/views/basicSettings/tenants/components/adduser.vue
+++ b/platform/src/views/basicSettings/tenants/components/adduser.vue
@@ -27,6 +27,18 @@
                     <el-radio :label="0">禁用</el-radio>
                 </el-radio-group>
             </el-form-item>
+            <el-form-item label="所属部门" prop="org_id">
+                <el-tree-select
+                    v-model="formData.org_id"
+                    :data="orgTree"
+                    :props="{ label: 'label', value: 'value', children: 'children' }"
+                    value-key="value"
+                    placeholder="请选择所属部门（用于文档私密共享按部门可见）"
+                    clearable
+                    check-strictly
+                    style="width: 100%"
+                />
+            </el-form-item>
         </el-form>
 
         <template #footer>
@@ -41,9 +53,10 @@
  * 租户详情内「添加用户」：提交到 /platform/tenantUser/create，
  * 后端写入 yz_tenant_user（租户-用户绑定，含冗余账号/密码等字段）。
  */
-import { ref, reactive } from 'vue';
+import { ref, reactive, onMounted } from 'vue';
 import { ElMessage } from 'element-plus';
 import { createTenantUser } from '@/api/tenantUser';
+import { getOrganizationList } from '@/api/erp';
 
 const emit = defineEmits(['success']);
 const visible = ref(false);
@@ -52,6 +65,8 @@ const submitting = ref(false);
 const formRef = ref();
 const currentTenantId = ref<number | null>(null);
 
+const orgTree = ref<any[]>([]);
+
 const formData = reactive({
     account: '',
     password: '',
@@ -59,9 +74,42 @@ const formData = reactive({
     name: '',
     phone: '',
     email: '',
-    status: 1
+    status: 1,
+    org_id: undefined as number | undefined
 });
 
+// 将平铺的组织机构列表转换为树结构，供部门选择器使用
+const buildOrgTree = (list: any[]): any[] => {
+    const nodes = (list || []).map((o) => ({
+        value: Number(o.id),
+        label: o.org_name || o.name || `部门${o.id}`,
+        parent_id: Number(o.parent_id || 0),
+    }));
+    const map = new Map<number, any>();
+    nodes.forEach((n) => map.set(n.value, { ...n, children: [] as any[] }));
+    const tree: any[] = [];
+    map.forEach((node) => {
+        const parent = map.get(node.parent_id);
+        if (parent) parent.children.push(node);
+        else tree.push(node);
+    });
+    return tree;
+};
+
+const loadOrgs = async () => {
+    try {
+        const res = await getOrganizationList();
+        if (res?.code === 200) {
+            const list = res?.data?.list || res?.data || [];
+            orgTree.value = buildOrgTree(list);
+        }
+    } catch {
+        orgTree.value = [];
+    }
+};
+
+onMounted(loadOrgs);
+
 const rules = {
     account: [{ required: true, message: '请输入用户名', trigger: 'blur' }],
     password: [{ required: true, message: '请输入密码', trigger: 'blur', min: 5 }],
@@ -100,7 +148,8 @@ const open = (tenantId: number) => {
         name: '',
         phone: '',
         email: '',
-        status: 1
+        status: 1,
+        org_id: undefined
     });
 };
 
@@ -120,6 +169,7 @@ const submitForm = async () => {
         const submitData = {
             ...formData,
             tid: currentTenantId.value,
+            org_id: formData.org_id || 0,
         };
         // 提交时不需要把确认密码发给后端
         delete (submitData as any).password2;