From 4cd86d97bde9b7b900d93342c116f721f37ad475 Mon Sep 17 00:00:00 2001
From: silk <java0904@think-land.com>
Date: Sun, 31 May 2026 10:59:54 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E6=94=B9=E6=9D=83=E9=99=90=E9=80=BB?=
 =?UTF-8?q?=E8=BE=91?=
MIME-Version: 1.0
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---
 admin-frontend/src/router/index.js            |   2 +
 admin-frontend/src/views/AuditLog.vue         | 173 +++++
 admin-frontend/src/views/Departments.vue      | 272 ++++++-
 admin-frontend/src/views/Enterprise.vue       |   4 +-
 admin-frontend/src/views/Layout.vue           |   3 +
 admin-frontend/src/views/Users.vue            |  65 +-
 backend/.env.example                          |   2 +-
 backend/admin/router.py                       | 118 +++
 backend/admin/schemas.py                      |  55 +-
 backend/api/kb_file_router.py                 | 107 ++-
 backend/api/team_router.py                    | 196 +++++
 backend/core/main.py                          |   4 +
 backend/core/permissions.py                   | 125 +++-
 backend/models/user.py                        |   1 +
 backend/seed_test_data.py                     | 444 ++++++++++++
 backend/services/admin_user_service.py        |  13 +-
 backend/services/audit_service.py             | 155 ++++
 backend/services/department_service.py        |  57 +-
 .../services/knowledge_base_file_service.py   | 159 ++---
 frontend/src/components/AppSidebarNav.vue     |  20 +
 frontend/src/router/index.js                  |   6 +
 frontend/src/views/KnowledgeBase.vue          |  47 +-
 frontend/src/views/TeamManagement.vue         | 363 ++++++++++
 sql.txt                                       | 675 ++++++++++++++++++
 update-ddl.txt                                |  73 ++
 权限.html                                     | 277 +++++++
 26 files changed, 3249 insertions(+), 167 deletions(-)
 create mode 100644 admin-frontend/src/views/AuditLog.vue
 create mode 100644 backend/api/team_router.py
 create mode 100644 backend/seed_test_data.py
 create mode 100644 backend/services/audit_service.py
 create mode 100644 frontend/src/views/TeamManagement.vue
 create mode 100644 sql.txt
 create mode 100644 update-ddl.txt
 create mode 100644 权限.html

diff --git a/admin-frontend/src/router/index.js b/admin-frontend/src/router/index.js
index 0bad2db..0f3a295 100644
--- a/admin-frontend/src/router/index.js
+++ b/admin-frontend/src/router/index.js
@@ -4,6 +4,7 @@ import Layout from "../views/Layout.vue";
 import Enterprise from "../views/Enterprise.vue";
 import Departments from "../views/Departments.vue";
 import Users from "../views/Users.vue";
+import AuditLog from "../views/AuditLog.vue";
 
 const routes = [
   { path: "/login", name: "login", component: Login, meta: { public: true } },
@@ -15,6 +16,7 @@ const routes = [
       { path: "enterprise", name: "enterprise", component: Enterprise },
       { path: "departments", name: "departments", component: Departments },
       { path: "users", name: "users", component: Users },
+      { path: "audit-logs", name: "audit-logs", component: AuditLog },
     ],
   },
 ];
diff --git a/admin-frontend/src/views/AuditLog.vue b/admin-frontend/src/views/AuditLog.vue
new file mode 100644
index 0000000..602ea2c
--- /dev/null
+++ b/admin-frontend/src/views/AuditLog.vue
@@ -0,0 +1,173 @@
+<template>
+  <div>
+    <h2 class="h4 mb-4">知识库操作日志</h2>
+
+    <!-- 筛选区 -->
+    <div class="card card-body mb-4 shadow-sm">
+      <div class="row g-2 align-items-end">
+        <div class="col-6 col-md-3">
+          <label class="form-label small mb-0">操作类型</label>
+          <select v-model="filter.action" class="form-select form-select-sm">
+            <option value="">全部</option>
+            <option value="upload">upload（上传）</option>
+            <option value="download">download（下载）</option>
+            <option value="delete">delete（删除）</option>
+            <option value="create_kb">create_kb（创建知识库）</option>
+            <option value="delete_kb">delete_kb（删除知识库）</option>
+            <option value="permission_change">permission_change（权限变更）</option>
+          </select>
+        </div>
+        <div class="col-6 col-md-2">
+          <label class="form-label small mb-0">操作者 ID</label>
+          <input v-model.number="filter.actor_id" type="number" class="form-control form-control-sm" placeholder="留空=全部" />
+        </div>
+        <div class="col-6 col-md-2">
+          <label class="form-label small mb-0">知识库 ID</label>
+          <input v-model.number="filter.kb_id" type="number" class="form-control form-control-sm" placeholder="留空=全部" />
+        </div>
+        <div class="col-auto d-flex gap-2">
+          <button class="btn btn-sm btn-primary" @click="applyFilter">搜索</button>
+          <button class="btn btn-sm btn-outline-secondary" @click="resetFilter">重置</button>
+        </div>
+      </div>
+    </div>
+
+    <div v-if="loading" class="text-muted">加载中…</div>
+    <div v-else>
+      <div class="table-responsive">
+        <table class="table table-sm table-hover bg-white shadow-sm align-middle small">
+          <thead class="table-light">
+            <tr>
+              <th>时间</th>
+              <th>操作者</th>
+              <th>操作</th>
+              <th>被操作用户</th>
+              <th>部门</th>
+              <th>知识库</th>
+              <th>文件</th>
+              <th>IP</th>
+              <th>详情</th>
+            </tr>
+          </thead>
+          <tbody>
+            <tr v-for="r in items" :key="r.id">
+              <td class="text-nowrap text-muted">{{ fmt(r.created_at) }}</td>
+              <td>
+                <span class="fw-semibold">{{ r.actor_name || r.actor_id }}</span>
+              </td>
+              <td>
+                <span class="badge" :class="actionBadge(r.action)">{{ r.action }}</span>
+              </td>
+              <td>{{ r.target_name || (r.target_user_id ? '#' + r.target_user_id : '—') }}</td>
+              <td>{{ r.department_name || (r.department_id ? '#' + r.department_id : '—') }}</td>
+              <td>{{ r.kb_name || (r.kb_id ? '#' + r.kb_id : '—') }}</td>
+              <td class="text-truncate" style="max-width:140px" :title="r.file_name">
+                {{ r.file_name || '—' }}
+              </td>
+              <td>{{ r.ip || '—' }}</td>
+              <td>
+                <span v-if="r.metadata" class="text-muted small">{{ metaStr(r.metadata) }}</span>
+                <span v-else>—</span>
+              </td>
+            </tr>
+          </tbody>
+        </table>
+        <p v-if="!items.length" class="text-muted small">暂无日志记录。</p>
+      </div>
+
+      <!-- 分页 -->
+      <nav v-if="total > pageSize" class="mt-2">
+        <ul class="pagination pagination-sm">
+          <li class="page-item" :class="{ disabled: page <= 1 }">
+            <a class="page-link" href="#" @click.prevent="page > 1 && page-- && load()">上一页</a>
+          </li>
+          <li class="page-item disabled">
+            <span class="page-link">{{ page }} / {{ totalPages }}（共 {{ total }} 条）</span>
+          </li>
+          <li class="page-item" :class="{ disabled: page >= totalPages }">
+            <a class="page-link" href="#" @click.prevent="page < totalPages && page++ && load()">下一页</a>
+          </li>
+        </ul>
+      </nav>
+    </div>
+  </div>
+</template>
+
+<script setup>
+import { computed, onMounted, reactive, ref } from "vue";
+import http from "../api/http";
+
+const items = ref([]);
+const total = ref(0);
+const loading = ref(false);
+const page = ref(1);
+const pageSize = 30;
+
+const filter = reactive({ action: "", actor_id: null, kb_id: null });
+const applied = reactive({ action: "", actor_id: null, kb_id: null });
+
+const totalPages = computed(() => Math.max(1, Math.ceil(total.value / pageSize)));
+
+async function load() {
+  loading.value = true;
+  try {
+    const params = { page: page.value, page_size: pageSize };
+    if (applied.action) params.action = applied.action;
+    if (applied.actor_id) params.actor_id = applied.actor_id;
+    if (applied.kb_id) params.kb_id = applied.kb_id;
+    const { data } = await http.get("/admin/audit-logs", { params });
+    const raw = data?.data;
+    items.value = raw?.items || [];
+    total.value = raw?.total || 0;
+  } catch (e) {
+    console.error(e);
+  } finally {
+    loading.value = false;
+  }
+}
+
+function applyFilter() {
+  Object.assign(applied, filter);
+  page.value = 1;
+  load();
+}
+
+function resetFilter() {
+  Object.assign(filter, { action: "", actor_id: null, kb_id: null });
+  Object.assign(applied, { action: "", actor_id: null, kb_id: null });
+  page.value = 1;
+  load();
+}
+
+function fmt(t) {
+  if (!t) return "—";
+  try { return new Date(t).toLocaleString("zh-CN"); } catch { return t; }
+}
+
+function actionBadge(action) {
+  const m = {
+    upload: "bg-success",
+    download: "bg-info text-dark",
+    delete: "bg-danger",
+    archive: "bg-secondary",
+    create_kb: "bg-primary",
+    delete_kb: "bg-danger",
+    permission_change: "bg-warning text-dark",
+  };
+  return m[action] || "bg-secondary";
+}
+
+function metaStr(meta) {
+  if (!meta) return "";
+  try {
+    const obj = typeof meta === "string" ? JSON.parse(meta) : meta;
+    return Object.entries(obj)
+      .map(([k, v]) => `${k}=${JSON.stringify(v)}`)
+      .join("  ");
+  } catch {
+    return String(meta);
+  }
+}
+
+onMounted(load);
+</script>
diff --git a/admin-frontend/src/views/Departments.vue b/admin-frontend/src/views/Departments.vue
index 993075b..56105d2 100644
--- a/admin-frontend/src/views/Departments.vue
+++ b/admin-frontend/src/views/Departments.vue
@@ -1,54 +1,209 @@
 <template>
   <div>
     <h2 class="h4 mb-4">部门管理</h2>
-    <div class="card card-body mb-4" style="max-width: 480px">
+
+    <div class="card card-body mb-4 shadow-sm">
       <h6 class="mb-3">新建部门</h6>
-      <form class="row g-2 align-items-end" @submit.prevent="create">
-        <div class="col-8">
-          <input v-model="newName" class="form-control" placeholder="部门名称" required />
+      <p class="text-muted small mb-3 mb-md-4">
+        对应接口 <code class="small">POST /api/admin/departments</code>，可为空指定上级部门（树形）。
+      </p>
+      <form class="row g-3 align-items-end" @submit.prevent="create">
+        <div class="col-md-4">
+          <label class="form-label small mb-1">部门名称</label>
+          <input v-model="newDept.name" class="form-control" placeholder="必填" required />
         </div>
-        <div class="col-4">
-          <button class="btn btn-primary w-100" type="submit" :disabled="creating">添加</button>
+        <div class="col-md-4">
+          <label class="form-label small mb-1">上级部门（可选）</label>
+          <select v-model="newDept.parent_id" class="form-select">
+            <option value="">无（顶级）</option>
+            <option v-for="d in items" :key="d.id" :value="String(d.id)">
+              {{ d.name }}（#{{ d.id }}）
+            </option>
+          </select>
+        </div>
+        <div class="col-md-auto">
+          <button class="btn btn-primary" type="submit" :disabled="creating">{{ creating ? "提交中…" : "创建" }}</button>
         </div>
       </form>
     </div>
+
     <div v-if="loading" class="text-muted">加载中…</div>
     <div v-else class="table-responsive">
-      <table class="table table-sm table-hover bg-white shadow-sm">
-        <thead>
+      <table class="table table-sm table-hover bg-white shadow-sm align-middle">
+        <thead class="table-light">
           <tr>
             <th>ID</th>
             <th>名称</th>
             <th>上级部门</th>
+            <th>部门负责人</th>
+            <th>创建时间</th>
+            <th style="min-width: 200px">操作</th>
           </tr>
         </thead>
         <tbody>
           <tr v-for="d in items" :key="d.id">
             <td>{{ d.id }}</td>
             <td>{{ d.name }}</td>
-            <td>{{ d.parent_id ?? "—" }}</td>
+            <td>{{ parentLabel(d.parent_id) }}</td>
+            <td>
+              <span v-if="d.leader_name" class="badge bg-primary">{{ d.leader_name }}</span>
+              <span v-else class="text-muted small">未设置</span>
+            </td>
+            <td class="text-muted small">{{ formatTime(d.created_at) }}</td>
+            <td class="text-nowrap">
+              <button type="button" class="btn btn-outline-primary btn-sm me-1" @click="openEdit(d)">
+                编辑
+              </button>
+              <button type="button" class="btn btn-outline-secondary btn-sm me-1" @click="openSetLeader(d)">
+                设负责人
+              </button>
+              <button type="button" class="btn btn-outline-danger btn-sm" @click="confirmDelete(d)">删除</button>
+            </td>
           </tr>
         </tbody>
       </table>
+      <p v-if="!items.length" class="text-muted small">暂无部门，请先创建。</p>
+    </div>
+
+    <!-- 编辑部门 PUT /api/admin/departments/{id} -->
+    <div id="modalDeptEdit" class="modal fade" tabindex="-1" ref="modalEditEl">
+      <div class="modal-dialog">
+        <div class="modal-content">
+          <div class="modal-header">
+            <h5 class="modal-title">编辑部门</h5>
+            <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close" />
+          </div>
+          <div class="modal-body">
+            <div class="mb-3">
+              <label class="form-label">部门名称</label>
+              <input v-model="editForm.name" type="text" class="form-control" required maxlength="255" />
+            </div>
+            <div class="mb-0">
+              <label class="form-label">上级部门</label>
+              <select v-model="editForm.parent_id" class="form-select">
+                <option value="">无（顶级）</option>
+                <option v-for="o in editParentOptions" :key="o.id" :value="String(o.id)">
+                  {{ o.name }}（#{{ o.id }}）
+                </option>
+              </select>
+              <div class="form-text">不能将上级设为自己。</div>
+            </div>
+          </div>
+          <div class="modal-footer">
+            <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">取消</button>
+            <button type="button" class="btn btn-primary" :disabled="savingEdit" @click="saveEdit">
+              {{ savingEdit ? "保存中…" : "保存" }}
+            </button>
+          </div>
+        </div>
+      </div>
+    </div>
+
+    <!-- 设置负责人 PUT /api/admin/departments/{id}/leader -->
+    <div id="modalSetLeader" class="modal fade" tabindex="-1" ref="modalLeaderEl">
+      <div class="modal-dialog">
+        <div class="modal-content">
+          <div class="modal-header">
+            <h5 class="modal-title">设置「{{ leaderForm.deptName }}」负责人</h5>
+            <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close" />
+          </div>
+          <div class="modal-body">
+            <div class="mb-0">
+              <label class="form-label">负责人（role=leader/admin 的用户）</label>
+              <select v-model="leaderForm.leader_user_id" class="form-select">
+                <option value="">— 清除负责人 —</option>
+                <option v-for="u in leaderCandidates" :key="u.id" :value="u.id">
+                  {{ u.display_name || u.username }}（{{ u.role }}）
+                </option>
+              </select>
+              <div class="form-text">仅显示 role=leader 或 admin 的用户。</div>
+            </div>
+          </div>
+          <div class="modal-footer">
+            <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">取消</button>
+            <button type="button" class="btn btn-primary" :disabled="savingLeader" @click="saveLeader">
+              {{ savingLeader ? "保存中…" : "保存" }}
+            </button>
+          </div>
+        </div>
+      </div>
     </div>
   </div>
 </template>
 
 <script setup>
-import { onMounted, ref } from "vue";
+import { computed, onMounted, reactive, ref } from "vue";
+import { Modal } from "bootstrap";
 import http from "../api/http";
 
 const items = ref([]);
 const loading = ref(true);
-const newName = ref("");
 const creating = ref(false);
+const savingEdit = ref(false);
+const savingLeader = ref(false);
+
+const newDept = reactive({ name: "", parent_id: "" });
+
+const modalEditEl = ref(null);
+const modalLeaderEl = ref(null);
+let modalEdit = null;
+let modalLeader = null;
+
+// 负责人表单
+const leaderForm = reactive({ deptId: null, deptName: "", leader_user_id: "" });
+const leaderCandidates = ref([]); // role=leader 或 admin 的用户
+
+const editForm = reactive({
+  id: null,
+  name: "",
+  parent_id: "",
+});
+
+/** 编辑时可选上级：排除自身，避免「自己挂自己」 */
+const editParentOptions = computed(() => {
+  const self = editForm.id;
+  return items.value.filter((d) => d.id !== self);
+});
+
+function unwrap(resData) {
+  return resData?.data !== undefined ? resData.data : resData;
+}
+
+function detail(e) {
+  const d = e.response?.data?.detail;
+  if (typeof d === "string") return d;
+  if (Array.isArray(d)) return d.map((x) => x.msg || JSON.stringify(x)).join("\n");
+  return e.message || "请求失败";
+}
+
+function parentLabel(parentId) {
+  if (parentId == null) return "—（顶级）";
+  const d = items.value.find((x) => x.id === parentId);
+  return d ? `${d.name}（#${d.id}）` : `#${parentId}`;
+}
+
+function formatTime(t) {
+  if (!t) return "—";
+  try {
+    const d = new Date(t);
+    return Number.isNaN(d.getTime()) ? String(t) : d.toLocaleString();
+  } catch {
+    return String(t);
+  }
+}
+
+function deptPayloadParentId(v) {
+  if (v === "" || v === null || v === undefined) return null;
+  const n = Number(v);
+  return Number.isFinite(n) ? n : null;
+}
 
 async function load() {
   loading.value = true;
   try {
     const { data } = await http.get("/admin/departments");
-    const raw = data.data || data;
-    items.value = raw.items || [];
+    const raw = unwrap(data);
+    items.value = raw?.items || [];
   } finally {
     loading.value = false;
   }
@@ -57,15 +212,98 @@ async function load() {
 async function create() {
   creating.value = true;
   try {
-    await http.post("/admin/departments", { name: newName.value.trim() });
-    newName.value = "";
+    const body = { name: newDept.name.trim() };
+    const pid = deptPayloadParentId(newDept.parent_id);
+    if (pid != null) body.parent_id = pid;
+    await http.post("/admin/departments", body);
+    newDept.name = "";
+    newDept.parent_id = "";
     await load();
   } catch (e) {
-    alert(e.response?.data?.detail || e.message);
+    alert(detail(e));
   } finally {
     creating.value = false;
   }
 }
 
-onMounted(load);
+function openEdit(d) {
+  editForm.id = d.id;
+  editForm.name = d.name;
+  editForm.parent_id = d.parent_id != null ? String(d.parent_id) : "";
+  modalEdit?.show();
+}
+
+async function saveEdit() {
+  if (!editForm.id) return;
+  savingEdit.value = true;
+  try {
+    const body = { name: editForm.name.trim() };
+    body.parent_id = deptPayloadParentId(editForm.parent_id);
+    await http.put(`/admin/departments/${editForm.id}`, body);
+    modalEdit?.hide();
+    await load();
+  } catch (e) {
+    alert(detail(e));
+  } finally {
+    savingEdit.value = false;
+  }
+}
+
+function confirmDelete(d) {
+  if (
+    !confirm(
+      `确定删除部门「${d.name}」吗？\n若部门下仍有用户，接口将返回错误（需先调整用户部门）。`
+    )
+  )
+    return;
+  doDelete(d.id);
+}
+
+async function doDelete(id) {
+  try {
+    await http.delete(`/admin/departments/${id}`);
+    await load();
+  } catch (e) {
+    alert(detail(e));
+  }
+}
+
+async function openSetLeader(d) {
+  leaderForm.deptId = d.id;
+  leaderForm.deptName = d.name;
+  leaderForm.leader_user_id = d.leader_user_id ?? "";
+  // 拉取候选（leader / admin）
+  try {
+    const { data } = await http.get("/admin/users", { params: { page_size: 200 } });
+    const raw = unwrap(data);
+    leaderCandidates.value = (raw?.items || []).filter(
+      (u) => u.role === "leader" || u.role === "admin"
+    );
+  } catch (e) {
+    leaderCandidates.value = [];
+  }
+  modalLeader?.show();
+}
+
+async function saveLeader() {
+  if (!leaderForm.deptId) return;
+  savingLeader.value = true;
+  try {
+    const leader_user_id =
+      leaderForm.leader_user_id === "" ? null : Number(leaderForm.leader_user_id);
+    await http.put(`/admin/departments/${leaderForm.deptId}/leader`, { leader_user_id });
+    modalLeader?.hide();
+    await load();
+  } catch (e) {
+    alert(detail(e));
+  } finally {
+    savingLeader.value = false;
+  }
+}
+
+onMounted(async () => {
+  modalEdit = new Modal(modalEditEl.value);
+  modalLeader = new Modal(modalLeaderEl.value);
+  await load();
+});
 </script>
diff --git a/admin-frontend/src/views/Enterprise.vue b/admin-frontend/src/views/Enterprise.vue
index e065be5..7681089 100644
--- a/admin-frontend/src/views/Enterprise.vue
+++ b/admin-frontend/src/views/Enterprise.vue
@@ -37,9 +37,9 @@ async function load() {
   error.value = "";
   try {
     const { data } = await http.get("/admin/enterprise");
-    const d = data.data || data;
+    const d = data?.data ?? data;
     name.value = d.name || "";
-    aiDisplayName.value = d.ai_display_name || "只能助手 AI";
+    aiDisplayName.value = d.ai_display_name || "智能助手 AI";
     code.value = d.code || "";
   } catch (e) {
     error.value = e.response?.data?.detail || e.message;
diff --git a/admin-frontend/src/views/Layout.vue b/admin-frontend/src/views/Layout.vue
index 30a9c4a..50a2986 100644
--- a/admin-frontend/src/views/Layout.vue
+++ b/admin-frontend/src/views/Layout.vue
@@ -12,6 +12,9 @@
         <li class="nav-item">
           <router-link class="nav-link text-white-50" active-class="text-white fw-semibold" to="/users">用户</router-link>
         </li>
+        <li class="nav-item">
+          <router-link class="nav-link text-white-50" active-class="text-white fw-semibold" to="/audit-logs">操作日志</router-link>
+        </li>
         <li class="nav-item mt-3">
           <button type="button" class="btn btn-outline-light btn-sm" @click="logout">退出</button>
         </li>
diff --git a/admin-frontend/src/views/Users.vue b/admin-frontend/src/views/Users.vue
index 4a3ab5d..dce5e77 100644
--- a/admin-frontend/src/views/Users.vue
+++ b/admin-frontend/src/views/Users.vue
@@ -81,10 +81,12 @@
             <th>ID</th>
             <th>用户名</th>
             <th>邮箱</th>
+            <th>手机号</th>
             <th>显示名</th>
             <th>角色</th>
             <th>部门</th>
             <th>状态</th>
+            <th title="知识库上传权限">上传权限</th>
             <th style="min-width: 280px">操作</th>
           </tr>
         </thead>
@@ -93,6 +95,7 @@
             <td>{{ u.id }}</td>
             <td>{{ u.username }}</td>
             <td>{{ u.email }}</td>
+            <td>{{ u.phone || "—" }}</td>
             <td>{{ u.display_name || "—" }}</td>
             <td>{{ roleLabel(u.role) }}</td>
             <td>{{ deptLabel(u.department_id) }}</td>
@@ -101,6 +104,17 @@
                 {{ u.is_active ? "正常" : "已禁用" }}
               </span>
             </td>
+            <td>
+              <button
+                type="button"
+                class="btn btn-sm"
+                :class="u.allow_kb_upload ? 'btn-outline-success' : 'btn-outline-danger'"
+                :title="u.allow_kb_upload ? '点击关闭上传权限' : '点击开启上传权限'"
+                @click="toggleUploadPerm(u)"
+              >
+                {{ u.allow_kb_upload ? '✓ 允许' : '✗ 禁止' }}
+              </button>
+            </td>
             <td class="text-nowrap">
               <button type="button" class="btn btn-outline-primary btn-sm me-1" @click="openEdit(u)">
                 编辑
@@ -422,7 +436,7 @@ function deptLabel(id) {
 async function loadDepartments() {
   try {
     const { data } = await http.get("/admin/departments");
-    const raw = data.data || data;
+    const raw = data?.data ?? data;
     departments.value = raw.items || [];
   } catch {
     departments.value = [];
@@ -432,7 +446,7 @@ async function loadDepartments() {
 async function loadMe() {
   try {
     const { data } = await http.get("/auth/me");
-    const u = data.data !== undefined ? data.data : data;
+    const u = data?.data ?? data;
     currentUserId.value = u.id ?? null;
   } catch {
     currentUserId.value = null;
@@ -479,7 +493,7 @@ async function load() {
     const dept = payloadDepartmentId(filterApplied.department_id);
     if (dept != null) params.department_id = dept;
     const { data } = await http.get("/admin/users", { params });
-    const raw = data.data || data;
+    const raw = data?.data ?? data;
     items.value = raw.items || [];
     total.value = raw.total || 0;
   } finally {
@@ -524,17 +538,34 @@ async function createUser() {
   }
 }
 
-function openEdit(u) {
-  editForm.id = u.id;
-  editForm.username = u.username;
-  editForm.email = u.email;
-  editForm.phone = u.phone;
-  editForm.display_name = u.display_name || "";
-  editForm.role = u.role;
-  editForm.department_id = u.department_id != null ? String(u.department_id) : "";
+function applyEditForm(row) {
+  editForm.id = row.id;
+  editForm.username = row.username;
+  editForm.email = row.email ?? "";
+  editForm.phone = row.phone ?? "";
+  editForm.display_name = row.display_name || "";
+  editForm.role = row.role || "employee";
+  editForm.department_id = row.department_id != null ? String(row.department_id) : "";
+}
+
+async function openEdit(u) {
+  try {
+    const { data } = await http.get(`/admin/users/${u.id}`);
+    const row = data?.data ?? data;
+    applyEditForm(row);
+  } catch (e) {
+    applyEditForm(u);
+    loggerOrConsole(e);
+  }
   modalEdit?.show();
 }
 
+function loggerOrConsole(e) {
+  if (typeof console !== "undefined" && console.warn) {
+    console.warn("拉取用户详情失败，使用列表数据：", detail(e));
+  }
+}
+
 async function saveEdit() {
   if (!editForm.id) return;
   savingEdit.value = true;
@@ -598,6 +629,18 @@ async function toggleActive(u) {
   }
 }
 
+async function toggleUploadPerm(u) {
+  const next = !u.allow_kb_upload;
+  const action = next ? "开启" : "关闭";
+  if (!confirm(`确定要${action}用户「${u.display_name || u.username}」的知识库上传权限吗？`)) return;
+  try {
+    await http.patch(`/admin/users/${u.id}/permissions`, { allow_kb_upload: next });
+    u.allow_kb_upload = next; // 乐观更新，避免重新拉取
+  } catch (e) {
+    alert(detail(e));
+  }
+}
+
 function confirmDelete(u) {
   if (!confirm(`确定删除用户「${u.username}」吗？\n若该用户仍有会话、知识库等关联数据，删除可能失败，请先禁用或清理数据。`)) return;
   doDelete(u.id);
diff --git a/backend/.env.example b/backend/.env.example
index 97ad9cb..f497489 100644
--- a/backend/.env.example
+++ b/backend/.env.example
@@ -89,7 +89,7 @@ DASHSCOPE_API_KEY=changeme_in_production
 #DEEPSEEK_API_BASE=https://api.deepseek.com/v1
 DASHSCOPE_API_BASE=https://dashscope.aliyuncs.com/compatible-mode/v1
 
-# 当此处为 true 时，表示聊天模型，使用的是原生的厂商模型以及原生厂商地址，否则，使用的是中垒的d大模型网关
+# 当此处为 true 时，表示聊天模型，使用的是原生的厂商模型以及原生厂商地址，否则，使用的是中垒的大模型网关
 USE_ORIGIN_MODEL=True
 
 # 此处为必填，表示一定要使用中垒的dashscope网关，设计到的服务有text_to_image, text_to_video, text_to_poster以及向量化服务的embedding模型
diff --git a/backend/admin/router.py b/backend/admin/router.py
index 2ccbec1..4140497 100644
--- a/backend/admin/router.py
+++ b/backend/admin/router.py
@@ -11,15 +11,20 @@ from admin.schemas import (
     AdminUserListItem,
     AdminUserListResponse,
     AdminUserUpdate,
+    AuditLogItem,
+    AuditLogListResponse,
     DepartmentCreate,
     DepartmentResponse,
+    DepartmentSetLeader,
     DepartmentUpdate,
     EnterpriseResponse,
     EnterpriseUpdate,
+    UserPermissionUpdate,
 )
 from core.dependencies import get_db, get_current_admin_user
 from models.user import User
 from services.admin_user_service import AdminUserService
+from services.audit_service import AuditService
 from services.department_service import DepartmentService
 from services.enterprise_service import EnterpriseService
 from utils.helpers import BaseResponse
@@ -75,6 +80,8 @@ async def list_departments(
             enterprise_id=r["enterprise_id"],
             name=r["name"],
             parent_id=r["parent_id"],
+            leader_user_id=r.get("leader_user_id"),
+            leader_name=r.get("leader_name"),
             created_at=r["created_at"],
         ).model_dump()
         for r in rows
@@ -104,6 +111,7 @@ async def create_department(
                 enterprise_id=row["enterprise_id"],
                 name=row["name"],
                 parent_id=row["parent_id"],
+                leader_user_id=None,
                 created_at=row["created_at"],
             ).model_dump(),
         )
@@ -135,6 +143,7 @@ async def update_department(
             enterprise_id=row["enterprise_id"],
             name=row["name"],
             parent_id=row["parent_id"],
+            leader_user_id=row.get("leader_user_id"),
             created_at=row["created_at"],
         ).model_dump(),
     )
@@ -267,3 +276,112 @@ async def delete_user(
             status_code=400,
             detail="该用户仍存在关联数据（如会话、知识库归属等），无法直接删除，请先禁用账号",
         )
+
+
+# ────────────────────────────────────────────────────────────
+# 部门负责人绑定（admin 专用）
+# ────────────────────────────────────────────────────────────
+
+@admin_router.put(
+    "/departments/{dept_id}/leader",
+    response_model=BaseResponse,
+    summary="设置/清除部门负责人",
+)
+async def set_department_leader(
+    dept_id: int,
+    body: DepartmentSetLeader,
+    admin: User = Depends(get_current_admin_user),
+    conn: asyncpg.Connection = Depends(get_db),
+):
+    # 若指定了 user_id，确认该用户属于本企业且是 leader
+    if body.leader_user_id is not None:
+        u = await conn.fetchrow(
+            "SELECT id, role, enterprise_id FROM user_list WHERE id = $1 AND enterprise_id = $2",
+            body.leader_user_id, admin.enterprise_id,
+        )
+        if not u:
+            raise HTTPException(status_code=400, detail="用户不存在或不属于本企业")
+        if u["role"] not in ("leader", "admin"):
+            raise HTTPException(status_code=400, detail="只能将 role=leader 或 admin 的用户设为负责人")
+    row = await DepartmentService.set_leader(conn, dept_id, admin.enterprise_id, body.leader_user_id)
+    if not row:
+        raise HTTPException(status_code=404, detail="部门不存在")
+    return BaseResponse(code=200, msg="设置成功", data=DepartmentResponse(
+        id=row["id"],
+        enterprise_id=row["enterprise_id"],
+        name=row["name"],
+        parent_id=row["parent_id"],
+        leader_user_id=row.get("leader_user_id"),
+    ).model_dump())
+
+
+# ────────────────────────────────────────────────────────────
+# 用户上传权限开关（admin 可设置任意用户）
+# ────────────────────────────────────────────────────────────
+
+@admin_router.patch(
+    "/users/{user_id}/permissions",
+    response_model=BaseResponse,
+    summary="设置用户知识库上传权限",
+)
+async def set_user_permission(
+    user_id: int,
+    body: UserPermissionUpdate,
+    admin: User = Depends(get_current_admin_user),
+    conn: asyncpg.Connection = Depends(get_db),
+):
+    target = await conn.fetchrow(
+        "SELECT id FROM user_list WHERE id = $1 AND enterprise_id = $2",
+        user_id, admin.enterprise_id,
+    )
+    if not target:
+        raise HTTPException(status_code=404, detail="用户不存在")
+    await conn.execute(
+        "UPDATE user_list SET allow_kb_upload = $1 WHERE id = $2",
+        body.allow_kb_upload, user_id,
+    )
+    await AuditService.write(
+        conn,
+        enterprise_id=admin.enterprise_id or 0,
+        actor_id=admin.id,
+        action="permission_change",
+        target_user_id=user_id,
+        metadata={"field": "allow_kb_upload", "new": body.allow_kb_upload, "by": "admin"},
+    )
+    return BaseResponse(code=200, msg="权限已更新", data={"allow_kb_upload": body.allow_kb_upload})
+
+
+# ────────────────────────────────────────────────────────────
+# 全企业审计日志（admin 专用）
+# ────────────────────────────────────────────────────────────
+
+@admin_router.get(
+    "/audit-logs",
+    response_model=BaseResponse,
+    summary="查看全企业知识库操作日志",
+)
+async def list_audit_logs(
+    page: int = Query(1, ge=1),
+    page_size: int = Query(20, ge=1, le=100),
+    action: Optional[str] = Query(None, description="操作类型过滤"),
+    actor_id: Optional[int] = Query(None, description="操作者 user_id"),
+    kb_id: Optional[int] = Query(None, description="知识库 ID"),
+    admin: User = Depends(get_current_admin_user),
+    conn: asyncpg.Connection = Depends(get_db),
+):
+    rows, total = await AuditService.list_logs(
+        conn,
+        admin.enterprise_id,
+        department_ids=None,  # admin 查全量
+        actor_id=actor_id,
+        kb_id=kb_id,
+        action=action,
+        page=page,
+        page_size=page_size,
+    )
+    items = [AuditLogItem(**r).model_dump() for r in rows]
+    return BaseResponse(
+        code=200,
+        msg="ok",
+        data=AuditLogListResponse(total=total, items=items).model_dump(),
+    )
diff --git a/backend/admin/schemas.py b/backend/admin/schemas.py
index 0dfafdd..1d2fd04 100644
--- a/backend/admin/schemas.py
+++ b/backend/admin/schemas.py
@@ -1,6 +1,6 @@
 """后台管理 API 请求/响应模型"""
 from datetime import datetime
-from typing import Optional
+from typing import Any, Dict, List, Optional
 
 from pydantic import BaseModel, EmailStr, Field
 
@@ -33,11 +33,17 @@ class DepartmentUpdate(BaseModel):
     parent_id: Optional[int] = None
 
 
+class DepartmentSetLeader(BaseModel):
+    leader_user_id: Optional[int] = Field(None, description="负责人 user_id，传 null 表示清除")
+
+
 class DepartmentResponse(BaseModel):
     id: int
     enterprise_id: int
     name: str
     parent_id: Optional[int] = None
+    leader_user_id: Optional[int] = None
+    leader_name: Optional[str] = None
     created_at: Optional[datetime] = None
 
 
@@ -59,6 +65,12 @@ class AdminUserUpdate(BaseModel):
     role: Optional[str] = Field(None, description="admin | leader | employee")
     is_active: Optional[bool] = None
     password: Optional[str] = Field(None, min_length=6)
+    allow_kb_upload: Optional[bool] = None
+
+
+class UserPermissionUpdate(BaseModel):
+    """领导更新下属权限（仅 allow_kb_upload）"""
+    allow_kb_upload: bool
 
 
 class AdminUserListItem(BaseModel):
@@ -72,6 +84,7 @@ class AdminUserListItem(BaseModel):
     role: str
     is_active: bool
     is_first_login: bool = True
+    allow_kb_upload: bool = True
     created_at: Optional[datetime] = None
     last_login_at: Optional[datetime] = None
 
@@ -79,3 +92,43 @@ class AdminUserListItem(BaseModel):
 class AdminUserListResponse(BaseModel):
     total: int
     items: list[AdminUserListItem]
+
+
+# ── 审计日志 ──────────────────────────────────
+
+class AuditLogItem(BaseModel):
+    id: int
+    enterprise_id: int
+    actor_id: int
+    actor_name: Optional[str] = None
+    action: str
+    target_user_id: Optional[int] = None
+    target_name: Optional[str] = None
+    department_id: Optional[int] = None
+    department_name: Optional[str] = None
+    kb_id: Optional[int] = None
+    kb_name: Optional[str] = None
+    file_id: Optional[int] = None
+    file_name: Optional[str] = None
+    ip: Optional[str] = None
+    metadata: Optional[Any] = None
+    created_at: Optional[datetime] = None
+
+
+class AuditLogListResponse(BaseModel):
+    total: int
+    items: List[AuditLogItem]
+
+
+# ── 团队成员（领导视角） ──────────────────────
+
+class TeamMemberItem(BaseModel):
+    id: int
+    username: str
+    display_name: Optional[str] = None
+    department_id: Optional[int] = None
+    department_name: Optional[str] = None
+    role: str
+    is_active: bool
+    allow_kb_upload: bool
+    created_at: Optional[datetime] = None
diff --git a/backend/api/kb_file_router.py b/backend/api/kb_file_router.py
index 890c078..d18eaeb 100644
--- a/backend/api/kb_file_router.py
+++ b/backend/api/kb_file_router.py
@@ -16,10 +16,12 @@ from core.config import settings
 from core.dependencies import get_db, get_current_user
 from core.database import get_db_pool
 from core.exceptions import NotFoundError, BadRequestError
+from core.permissions import can_delete_file, can_upload_to_kb
 from models.user import User
-from models.knowledge_base_file import FileUploadResponse, FileListResponse
+from models.knowledge_base_file import FileUploadResponse, FileListResponse, KnowledgeBaseFile
 from services.knowledge_base_service import KnowledgeBaseService
 from services.knowledge_base_file_service import KnowledgeBaseFileService
+from services.audit_service import AuditService
 from services.vector_service import get_vector_service
 from services.oss_service import get_oss_service
 from utils.helpers import BaseResponse
@@ -327,8 +329,12 @@ async def upload_file(
     """上传文件到知识库并进行向量化处理"""
     try:
         logger.info(f"📤 开始上传文件到知识库 {kb_id}: {file.filename}, 用户: {current_user.username}")
-        
-        await _check_kb_access(conn, kb_id, current_user)
+
+        kb = await _check_kb_access(conn, kb_id, current_user)
+
+        # 检查上传权限（allow_kb_upload 开关）
+        if not can_upload_to_kb(current_user, kb):
+            raise BadRequestError("您的上传权限已被关闭，请联系部门领导或管理员")
         
         # 检查文件类型
         file_ext = Path(file.filename).suffix.lower()
@@ -431,7 +437,19 @@ async def upload_file(
             conn, kb_id, current_user.id, file.filename, file_path, file_size, file_type
         )
         logger.info(f"✅ 文件记录已创建: ID={file_record.id}, 状态={file_record.status}")
-        
+
+        # 审计日志：上传
+        await AuditService.write(
+            conn,
+            enterprise_id=current_user.enterprise_id or 0,
+            actor_id=current_user.id,
+            action="upload",
+            department_id=current_user.department_id,
+            kb_id=kb_id,
+            file_id=file_record.id,
+            metadata={"file_name": file.filename, "file_size": file_size, "file_type": file_type},
+        )
+
         # 添加后台任务
         logger.info(f"🚀 添加后台向量化任务: file_id={file_record.id}, type={file_type}")
         background_tasks.add_task(process_file_background, file_record.id, file_path, kb_id, file_type)
@@ -470,8 +488,10 @@ async def upload_url(
     conn: asyncpg.Connection = Depends(get_db)
 ):
     """上传 URL 到知识库并进行向量化处理"""
-    await _check_kb_access(conn, kb_id, current_user)
-    
+    kb = await _check_kb_access(conn, kb_id, current_user)
+    if not can_upload_to_kb(current_user, kb):
+        raise BadRequestError("您的上传权限已被关闭，请联系部门领导或管理员")
+
     url = request.url.strip()
     if not url.startswith(('http://', 'https://')):
         raise BadRequestError("URL 格式不正确，必须以 http:// 或 https:// 开头")
@@ -515,28 +535,31 @@ async def get_knowledge_base_files(
 ):
     """获取知识库的文件列表"""
     await _check_kb_access(conn, kb_id, current_user)
-    
-    files, total = await KnowledgeBaseFileService.get_files_by_kb(
+
+    file_rows, total = await KnowledgeBaseFileService.get_files_by_kb(
         conn, kb_id, current_user.id, page, page_size
     )
-    
+
     items = [
-        FileUploadResponse(
-            id=f.id,
-            file_name=f.file_name,
-            file_size=f.file_size,
-            status=f.status,
-            chunk_count=f.chunk_count,
-            created_at=f.created_at,
-            file_url=f.file_path
-        ).dict()
-        for f in files
+        {
+            "id": r["id"],
+            "file_name": r["file_name"],
+            "file_size": r["file_size"],
+            "file_type": r["file_type"],
+            "status": r["status"],
+            "chunk_count": r["chunk_count"],
+            "created_at": r["created_at"].isoformat() if r.get("created_at") else None,
+            "file_url": r["file_path"],
+            "uploader_name": r.get("uploader_name"),
+            "is_mine": r["user_id"] == current_user.id,
+        }
+        for r in file_rows
     ]
-    
+
     return BaseResponse(
         code=200,
         msg="获取文件列表成功",
-        data=FileListResponse(total=total, items=items).dict()
+        data={"total": total, "items": items},
     )
 
 
@@ -615,18 +638,42 @@ async def delete_file(
     current_user: User = Depends(get_current_user),
     conn: asyncpg.Connection = Depends(get_db)
 ):
-    """删除知识库中的文件"""
-    await _check_kb_access(conn, kb_id, current_user)
-    
+    """删除知识库中的文件（本人、领导管辖范围内、admin 均可）"""
+    kb = await _check_kb_access(conn, kb_id, current_user)
+
     file = await KnowledgeBaseFileService.get_file_by_id(conn, file_id, current_user.id)
     if not file or file.knowledge_base_id != kb_id:
         raise NotFoundError("文件")
-    
-    # 删除文件记录
-    success, vector_ids = await KnowledgeBaseFileService.delete_file(conn, file_id, current_user.id)
+
+    # 权限校验：can_delete_file 内部判断本人/领导/admin
+    allowed = await can_delete_file(conn, current_user, file, kb)
+    if not allowed:
+        from fastapi import HTTPException, status as http_status
+        raise HTTPException(
+            status_code=http_status.HTTP_403_FORBIDDEN,
+            detail="无权限删除该文件，仅文件上传者、部门领导或管理员可删除",
+        )
+
+    bypass = (current_user.role in ("admin", "leader") and file.user_id != current_user.id)
+    success, vector_ids = await KnowledgeBaseFileService.delete_file(
+        conn, file_id, current_user.id, bypass_owner_check=bypass
+    )
     if not success:
         raise NotFoundError("文件")
-    
+
+    # 审计日志
+    await AuditService.write(
+        conn,
+        enterprise_id=current_user.enterprise_id or 0,
+        actor_id=current_user.id,
+        action="delete",
+        target_user_id=file.user_id if file.user_id != current_user.id else None,
+        department_id=current_user.department_id,
+        kb_id=kb_id,
+        file_id=file_id,
+        metadata={"file_name": file.file_name, "by_role": current_user.role},
+    )
+
     # 删除向量
     if vector_ids:
         try:
@@ -635,7 +682,7 @@ async def delete_file(
             logger.info(f"已删除 {len(vector_ids)} 个向量")
         except Exception as e:
             logger.warning(f"删除向量库中的向量失败: {e}")
-    
+
     # 删除物理文件
     try:
         oss_service = get_oss_service()
@@ -649,7 +696,7 @@ async def delete_file(
             logger.info(f"已删除本地文件: {file.file_path}")
     except Exception as e:
         logger.warning(f"删除物理文件失败: {e}")
-    
+
     return BaseResponse(code=200, msg="删除文件成功", data={"id": file_id})
 
 
diff --git a/backend/api/team_router.py b/backend/api/team_router.py
new file mode 100644
index 0000000..3605225
--- /dev/null
+++ b/backend/api/team_router.py
@@ -0,0 +1,196 @@
+"""
+领导团队管理 API（role=leader 或 admin 可访问）
+
+路由前缀：/api/team
+接口列表：
+  GET  /api/team/members              查看本部门及下级成员
+  GET  /api/team/members/{user_id}    查看成员详情
+  PATCH /api/team/members/{user_id}/permissions  修改成员上传权限
+  GET  /api/team/audit-logs           查看本部门及下级操作日志
+"""
+from typing import List, Optional
+
+import asyncpg
+from fastapi import APIRouter, Depends, HTTPException, Query, status
+
+from admin.schemas import AuditLogItem, AuditLogListResponse, TeamMemberItem, UserPermissionUpdate
+from core.dependencies import get_db, get_current_user
+from core.permissions import get_managed_dept_ids, is_subordinate
+from models.user import User
+from services.audit_service import AuditService
+from utils.helpers import BaseResponse
+from logger.logging import get_logger
+
+logger = get_logger(__name__)
+
+team_router = APIRouter(prefix="/api/team", tags=["领导团队管理"])
+
+
+async def _require_leader_or_admin(user: User) -> User:
+    """只有 leader 或 admin 才能访问团队管理接口。"""
+    if user.role not in ("leader", "admin"):
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="仅部门领导或管理员可访问团队管理功能",
+        )
+    return user
+
+
+# ─────────────────────────────────────────────
+# 成员列表
+# ─────────────────────────────────────────────
+
+@team_router.get("/members", response_model=BaseResponse, summary="查看管辖范围内的成员")
+async def list_team_members(
+    page: int = Query(1, ge=1),
+    page_size: int = Query(20, ge=1, le=100),
+    current_user: User = Depends(get_current_user),
+    conn: asyncpg.Connection = Depends(get_db),
+):
+    await _require_leader_or_admin(current_user)
+    dept_ids = await get_managed_dept_ids(conn, current_user)
+    if not dept_ids:
+        return BaseResponse(code=200, msg="ok", data={"total": 0, "items": []})
+
+    offset = (page - 1) * page_size
+    total = await conn.fetchval(
+        """
+        SELECT COUNT(*) FROM user_list
+        WHERE enterprise_id = $1
+          AND department_id = ANY($2::int[])
+          AND id != $3
+        """,
+        current_user.enterprise_id, dept_ids, current_user.id,
+    )
+    rows = await conn.fetch(
+        """
+        SELECT u.id, u.username, u.display_name, u.department_id,
+               d.name AS department_name, u.role, u.is_active,
+               u.allow_kb_upload, u.created_at
+        FROM user_list u
+        LEFT JOIN department d ON d.id = u.department_id
+        WHERE u.enterprise_id = $1
+          AND u.department_id = ANY($2::int[])
+          AND u.id != $3
+        ORDER BY u.department_id, u.id
+        LIMIT $4 OFFSET $5
+        """,
+        current_user.enterprise_id, dept_ids, current_user.id, page_size, offset,
+    )
+    items = [TeamMemberItem(**dict(r)).model_dump() for r in rows]
+    return BaseResponse(code=200, msg="ok", data={"total": int(total or 0), "items": items})
+
+
+@team_router.get("/members/{user_id}", response_model=BaseResponse, summary="查看成员详情")
+async def get_team_member(
+    user_id: int,
+    current_user: User = Depends(get_current_user),
+    conn: asyncpg.Connection = Depends(get_db),
+):
+    await _require_leader_or_admin(current_user)
+    if not await is_subordinate(conn, current_user, user_id):
+        raise HTTPException(status_code=403, detail="无权查看该成员，不在管辖范围内")
+    row = await conn.fetchrow(
+        """
+        SELECT u.id, u.username, u.display_name, u.department_id,
+               d.name AS department_name, u.role, u.is_active,
+               u.allow_kb_upload, u.created_at
+        FROM user_list u
+        LEFT JOIN department d ON d.id = u.department_id
+        WHERE u.id = $1
+        """,
+        user_id,
+    )
+    if not row:
+        raise HTTPException(status_code=404, detail="用户不存在")
+    return BaseResponse(code=200, msg="ok", data=TeamMemberItem(**dict(row)).model_dump())
+
+
+# ─────────────────────────────────────────────
+# 修改成员权限
+# ─────────────────────────────────────────────
+
+@team_router.patch(
+    "/members/{user_id}/permissions",
+    response_model=BaseResponse,
+    summary="设置下属成员知识库上传权限",
+)
+async def update_member_permission(
+    user_id: int,
+    body: UserPermissionUpdate,
+    current_user: User = Depends(get_current_user),
+    conn: asyncpg.Connection = Depends(get_db),
+):
+    await _require_leader_or_admin(current_user)
+    if not await is_subordinate(conn, current_user, user_id):
+        raise HTTPException(status_code=403, detail="越级操作：该用户不在您的管辖范围内")
+
+    await conn.execute(
+        "UPDATE user_list SET allow_kb_upload = $1 WHERE id = $2",
+        body.allow_kb_upload, user_id,
+    )
+
+    # 审计日志
+    target_row = await conn.fetchrow(
+        "SELECT department_id FROM user_list WHERE id = $1", user_id
+    )
+    await AuditService.write(
+        conn,
+        enterprise_id=current_user.enterprise_id or 0,
+        actor_id=current_user.id,
+        action="permission_change",
+        target_user_id=user_id,
+        department_id=current_user.department_id,
+        metadata={
+            "field": "allow_kb_upload",
+            "new": body.allow_kb_upload,
+            "by_role": current_user.role,
+        },
+    )
+    return BaseResponse(
+        code=200,
+        msg="权限已更新",
+        data={"user_id": user_id, "allow_kb_upload": body.allow_kb_upload},
+    )
+
+
+# ─────────────────────────────────────────────
+# 审计日志（部门范围）
+# ─────────────────────────────────────────────
+
+@team_router.get(
+    "/audit-logs",
+    response_model=BaseResponse,
+    summary="查看管辖部门内的操作日志",
+)
+async def list_team_audit_logs(
+    page: int = Query(1, ge=1),
+    page_size: int = Query(20, ge=1, le=100),
+    action: Optional[str] = Query(None, description="操作类型过滤"),
+    actor_id: Optional[int] = Query(None, description="指定操作者"),
+    kb_id: Optional[int] = Query(None, description="指定知识库"),
+    current_user: User = Depends(get_current_user),
+    conn: asyncpg.Connection = Depends(get_db),
+):
+    await _require_leader_or_admin(current_user)
+    dept_ids = await get_managed_dept_ids(conn, current_user)
+
+    # admin 传 None 查全量；leader 传 dept_ids
+    filter_depts = None if current_user.role == "admin" else dept_ids
+
+    rows, total = await AuditService.list_logs(
+        conn,
+        current_user.enterprise_id,
+        department_ids=filter_depts,
+        actor_id=actor_id,
+        kb_id=kb_id,
+        action=action,
+        page=page,
+        page_size=page_size,
+    )
+    items = [AuditLogItem(**r).model_dump() for r in rows]
+    return BaseResponse(
+        code=200,
+        msg="ok",
+        data=AuditLogListResponse(total=total, items=items).model_dump(),
+    )
diff --git a/backend/core/main.py b/backend/core/main.py
index c6a48b5..003fcb1 100644
--- a/backend/core/main.py
+++ b/backend/core/main.py
@@ -45,6 +45,7 @@ from api.kb_file_router import kb_file_router
 from api.kb_processing_router import kb_processing_router
 from api.knowledge_graph_router import knowledge_graph_router
 from api.user_setting import user_setting_router
+from api.team_router import team_router
 from admin import admin_router
 from core.config import settings
 from core.database import close_db_pool
@@ -146,6 +147,9 @@ def create_app() -> FastAPI:
     # 用户设置路由
     app.include_router(user_setting_router)
 
+    # 领导团队管理路由
+    app.include_router(team_router)
+
     app.include_router(knowledge_graph_router)
 
     # 注册全局异常处理器
diff --git a/backend/core/permissions.py b/backend/core/permissions.py
index 1cc0b2a..6ce21ae 100644
--- a/backend/core/permissions.py
+++ b/backend/core/permissions.py
@@ -1,17 +1,92 @@
 """
 企业版知识库访问控制：RBAC + ABAC（可见性）
-与 quanxianfangan.md 中规则一致。
+
+规则汇总
+--------
+- admin   : 全企业范围无限制
+- leader  : 管辖「本部门及所有子孙部门」内的用户与文件
+- employee: 只能操作自己的资源；可查看同部门 department/enterprise 可见知识库及库内全部文件
+- 越级    : 不在管辖子树内的操作一律拒绝
 """
-from typing import Literal
+from typing import List, Literal, Optional
+
+import asyncpg
 
 from models.graph_metadata import GraphRecord
 from models.knowledge_base import KnowledgeBase
+from models.knowledge_base_file import KnowledgeBaseFile
 from models.user import User
 
 UserRole = Literal["admin", "leader", "employee"]
 KbVisibility = Literal["private", "department", "enterprise"]
 
 
+# ──────────────────────────────────────────────
+# 部门子树查询（方案 A 核心辅助）
+# ──────────────────────────────────────────────
+
+async def get_managed_dept_ids(conn: asyncpg.Connection, user: User) -> List[int]:
+    """
+    返回 user 可管辖的部门 ID 列表。
+    - admin  -> 企业全部部门
+    - leader -> 本部门及其所有子孙部门（递归 CTE）
+    - employee -> 空列表
+    """
+    if user.enterprise_id is None:
+        return []
+    if user.role == "admin":
+        rows = await conn.fetch(
+            "SELECT id FROM department WHERE enterprise_id = $1",
+            user.enterprise_id,
+        )
+        return [r["id"] for r in rows]
+    if user.role == "leader" and user.department_id is not None:
+        rows = await conn.fetch(
+            """
+            WITH RECURSIVE sub AS (
+                SELECT id FROM department WHERE id = $1
+                UNION ALL
+                SELECT d.id FROM department d JOIN sub ON d.parent_id = sub.id
+            )
+            SELECT id FROM sub
+            """,
+            user.department_id,
+        )
+        return [r["id"] for r in rows]
+    return []
+
+
+async def is_subordinate(
+    conn: asyncpg.Connection, actor: User, target_user_id: int
+) -> bool:
+    """
+    判断 target_user_id 是否在 actor 的管辖范围内。
+    - admin 对同企业全员返回 True
+    - leader 对子树内（非本人）成员返回 True
+    """
+    if actor.id == target_user_id:
+        return False
+    if actor.enterprise_id is None:
+        return False
+    # 确认被管辖者在同一企业
+    row = await conn.fetchrow(
+        "SELECT department_id, enterprise_id FROM user_list WHERE id = $1",
+        target_user_id,
+    )
+    if not row or row["enterprise_id"] != actor.enterprise_id:
+        return False
+    if actor.role == "admin":
+        return True
+    if actor.role == "leader":
+        managed = await get_managed_dept_ids(conn, actor)
+        return row["department_id"] in managed if row["department_id"] else False
+    return False
+
+
+# ──────────────────────────────────────────────
+# 知识库级权限（同步，无需数据库）
+# ──────────────────────────────────────────────
+
 def can_view_kb(user: User, kb: KnowledgeBase) -> bool:
     """判断用户是否可查看该知识库。"""
     if user.role == "admin":
@@ -39,6 +114,52 @@ def can_manage_kb(user: User, kb: KnowledgeBase) -> bool:
     return False
 
 
+# ──────────────────────────────────────────────
+# 文件级权限（需要异步 DB 查询）
+# ──────────────────────────────────────────────
+
+async def can_delete_file(
+    conn: asyncpg.Connection,
+    user: User,
+    file: KnowledgeBaseFile,
+    kb: Optional[KnowledgeBase] = None,
+) -> bool:
+    """
+    判断用户是否可删除该文件。
+    - 文件上传者本人
+    - admin（同企业）
+    - leader（下级成员上传的文件，基于子树管辖范围）
+    """
+    # 本人上传
+    if file.user_id == user.id:
+        return True
+    # admin 可删同企业内任意文件
+    if user.role == "admin":
+        if kb is not None:
+            return kb.enterprise_id == user.enterprise_id
+        return True
+    # leader 判断上传者是否在子树内
+    if user.role == "leader":
+        return await is_subordinate(conn, user, file.user_id)
+    return False
+
+
+def can_upload_to_kb(user: User, kb: KnowledgeBase) -> bool:
+    """
+    判断用户是否可向知识库上传文件。
+    - 必须能 view KB
+    - allow_kb_upload 未被关闭
+    - leader 或 admin 也受 allow_kb_upload 约束（管理员初始化时均为 True）
+    """
+    if not can_view_kb(user, kb):
+        return False
+    return bool(user.allow_kb_upload)
+
+
+# ──────────────────────────────────────────────
+# 知识图谱级权限（保持不变）
+# ──────────────────────────────────────────────
+
 def can_view_graph(user: User, g: GraphRecord) -> bool:
     """判断用户是否可查看该知识图谱（规则与知识库一致）。"""
     if user.role == "admin":
diff --git a/backend/models/user.py b/backend/models/user.py
index 9f345c1..8f54cb3 100644
--- a/backend/models/user.py
+++ b/backend/models/user.py
@@ -31,6 +31,7 @@ class User(BaseModel):
     department_id: Optional[int] = None
     role: str = Field("employee", description="admin | leader | employee")
     is_first_login: bool = True
+    allow_kb_upload: bool = Field(True, description="是否允许上传文件到知识库")
 
     class Config:
         from_attributes = True
diff --git a/backend/seed_test_data.py b/backend/seed_test_data.py
new file mode 100644
index 0000000..fa3a607
--- /dev/null
+++ b/backend/seed_test_data.py
@@ -0,0 +1,444 @@
+"""
+权限方案 A 测试数据种子脚本
+运行方式（在 backend 目录下）：
+    python seed_test_data.py
+
+前提：
+1. 已执行 update-ddl.txt 中的 ALTER/CREATE 语句
+2. .env 文件中的数据库配置正确
+
+数据概览
+--------
+企业：火焰企业（id=1，若已存在则跳过）
+
+部门结构（三级树形）：
+  技术部（id 由 serial 自动生成）
+  ├── 前端组
+  └── 后端组
+  产品部
+
+角色矩阵：
+  admin1          admin        无部门
+  leader_tech     leader       技术部（兼管前端组、后端组）
+  leader_frontend leader       前端组
+  emp1_frontend   employee     前端组   allow_kb_upload=true
+  emp2_frontend   employee     前端组   allow_kb_upload=false（被关闭）
+  emp1_backend    employee     后端组
+  leader_product  leader       产品部
+  emp1_product    employee     产品部
+
+所有账号密码均为：Test@123456
+"""
+import asyncio
+import json
+from datetime import datetime, timezone
+
+import asyncpg
+from dotenv import load_dotenv
+from pathlib import Path
+load_dotenv(Path(__file__).resolve().parent.parent / ".env")
+
+from core.config import settings
+from core.security import get_password_hash
+
+# ──────────────────────────────────────────────
+# 测试数据定义
+# ──────────────────────────────────────────────
+
+PASSWORD = "Test@123456"
+
+DEPARTMENTS = [
+    {"key": "tech",     "name": "技术部",   "parent_key": None},
+    {"key": "frontend", "name": "前端组",   "parent_key": "tech"},
+    {"key": "backend",  "name": "后端组",   "parent_key": "tech"},
+    {"key": "product",  "name": "产品部",   "parent_key": None},
+]
+
+USERS = [
+    {
+        "username": "admin1",
+        "email": "admin1@test.example",
+        "phone": "13800000001",
+        "display_name": "系统管理员",
+        "role": "admin",
+        "dept_key": None,
+        "allow_kb_upload": True,
+    },
+    {
+        "username": "leader_tech",
+        "email": "leader_tech@test.example",
+        "phone": "13800000002",
+        "display_name": "技术部总监",
+        "role": "leader",
+        "dept_key": "tech",
+        "allow_kb_upload": True,
+    },
+    {
+        "username": "leader_frontend",
+        "email": "leader_frontend@test.example",
+        "phone": "13800000003",
+        "display_name": "前端组组长",
+        "role": "leader",
+        "dept_key": "frontend",
+        "allow_kb_upload": True,
+    },
+    {
+        "username": "emp1_frontend",
+        "email": "emp1_frontend@test.example",
+        "phone": "13800000004",
+        "display_name": "前端员工甲",
+        "role": "employee",
+        "dept_key": "frontend",
+        "allow_kb_upload": True,
+    },
+    {
+        "username": "emp2_frontend",
+        "email": "emp2_frontend@test.example",
+        "phone": "13800000005",
+        "display_name": "前端员工乙（上传已禁）",
+        "role": "employee",
+        "dept_key": "frontend",
+        "allow_kb_upload": False,  # 领导关闭了上传权限
+    },
+    {
+        "username": "emp1_backend",
+        "email": "emp1_backend@test.example",
+        "phone": "13800000006",
+        "display_name": "后端员工甲",
+        "role": "employee",
+        "dept_key": "backend",
+        "allow_kb_upload": True,
+    },
+    {
+        "username": "leader_product",
+        "email": "leader_product@test.example",
+        "phone": "13800000007",
+        "display_name": "产品部负责人",
+        "role": "leader",
+        "dept_key": "product",
+        "allow_kb_upload": True,
+    },
+    {
+        "username": "emp1_product",
+        "email": "emp1_product@test.example",
+        "phone": "13800000008",
+        "display_name": "产品员工甲",
+        "role": "employee",
+        "dept_key": "product",
+        "allow_kb_upload": True,
+    },
+]
+
+# ──────────────────────────────────────────────
+# 种子函数
+# ──────────────────────────────────────────────
+
+async def seed():
+    conn: asyncpg.Connection = await asyncpg.connect(settings.db_uri)
+    hashed_pw = get_password_hash(PASSWORD)
+    now = datetime.now(timezone.utc)
+
+    print("=== 开始写入测试数据 ===\n")
+
+    # 1. 企业
+    enterprise_id = await conn.fetchval(
+        "SELECT id FROM enterprise LIMIT 1"
+    )
+    if enterprise_id is None:
+        enterprise_id = await conn.fetchval(
+            """
+            INSERT INTO enterprise (name, code, created_at, updated_at)
+            VALUES ('火焰企业（测试）', 'huoyan-test', $1, $1)
+            RETURNING id
+            """,
+            now,
+        )
+        print(f"✅ 创建企业 id={enterprise_id}")
+    else:
+        print(f"ℹ️  使用已有企业 id={enterprise_id}")
+
+    # 2. 部门
+    dept_map: dict[str, int] = {}
+    for d in DEPARTMENTS:
+        existing = await conn.fetchval(
+            "SELECT id FROM department WHERE enterprise_id = $1 AND name = $2",
+            enterprise_id, d["name"],
+        )
+        if existing:
+            dept_map[d["key"]] = existing
+            print(f"ℹ️  部门「{d['name']}」已存在 id={existing}")
+            continue
+        parent_id = dept_map.get(d["parent_key"]) if d["parent_key"] else None
+        row = await conn.fetchrow(
+            """
+            INSERT INTO department (enterprise_id, name, parent_id, created_at, updated_at)
+            VALUES ($1, $2, $3, $4, $4)
+            RETURNING id
+            """,
+            enterprise_id, d["name"], parent_id, now,
+        )
+        dept_map[d["key"]] = row["id"]
+        print(f"✅ 创建部门「{d['name']}」id={row['id']}  parent={parent_id}")
+
+    # 3. 用户
+    user_map: dict[str, int] = {}
+    for u in USERS:
+        existing = await conn.fetchval(
+            "SELECT id FROM user_list WHERE username = $1", u["username"]
+        )
+        if existing:
+            user_map[u["username"]] = existing
+            print(f"ℹ️  用户「{u['username']}」已存在 id={existing}")
+            continue
+        dept_id = dept_map.get(u["dept_key"]) if u["dept_key"] else None
+        row = await conn.fetchrow(
+            """
+            INSERT INTO user_list (
+                username, email, phone, hashed_password, display_name,
+                enterprise_id, department_id, role, allow_kb_upload,
+                is_active, is_first_login, email_verified,
+                created_at, updated_at
+            )
+            VALUES ($1,$2,$3,$4,$5,$6,$7,$8,$9,TRUE,FALSE,TRUE,$10,$10)
+            RETURNING id
+            """,
+            u["username"], u["email"], u["phone"], hashed_pw,
+            u["display_name"], enterprise_id, dept_id, u["role"],
+            u["allow_kb_upload"], now,
+        )
+        user_map[u["username"]] = row["id"]
+        print(
+            f"✅ 创建用户「{u['display_name']}」({u['role']}) id={row['id']}"
+            f"  dept={dept_id}  allow_upload={u['allow_kb_upload']}"
+        )
+
+    # 4. 绑定部门负责人（leader_user_id）
+    leader_bindings = [
+        ("tech",     "leader_tech"),
+        ("frontend", "leader_frontend"),
+        ("product",  "leader_product"),
+    ]
+    for dept_key, leader_key in leader_bindings:
+        dept_id = dept_map.get(dept_key)
+        leader_id = user_map.get(leader_key)
+        if dept_id and leader_id:
+            await conn.execute(
+                "UPDATE department SET leader_user_id = $1 WHERE id = $2",
+                leader_id, dept_id,
+            )
+            print(f"🔗 部门 id={dept_id} 负责人 -> user id={leader_id}")
+
+    # 5. 知识库
+    kb_defs = [
+        {
+            "name": "前端组公共手册",
+            "description": "前端组对内共享的技术规范与操作手册",
+            "visibility": "department",
+            "creator_key": "leader_frontend",
+            "dept_key": "frontend",
+        },
+        {
+            "name": "前端员工甲的私人笔记",
+            "description": "个人学习笔记（私有）",
+            "visibility": "private",
+            "creator_key": "emp1_frontend",
+            "dept_key": "frontend",
+        },
+        {
+            "name": "企业全员知识库",
+            "description": "全企业可见，由管理员维护",
+            "visibility": "enterprise",
+            "creator_key": "admin1",
+            "dept_key": None,
+        },
+        {
+            "name": "产品部资料库",
+            "description": "产品部内部共享文档",
+            "visibility": "department",
+            "creator_key": "leader_product",
+            "dept_key": "product",
+        },
+    ]
+    kb_map: dict[str, int] = {}
+    for kb in kb_defs:
+        creator_id = user_map.get(kb["creator_key"])
+        dept_id = dept_map.get(kb["dept_key"]) if kb["dept_key"] else None
+        existing = await conn.fetchval(
+            """
+            SELECT id FROM knowledge_base
+            WHERE name = $1 AND enterprise_id = $2 AND is_deleted = FALSE
+            """,
+            kb["name"], enterprise_id,
+        )
+        if existing:
+            kb_map[kb["name"]] = existing
+            print(f"ℹ️  知识库「{kb['name']}」已存在 id={existing}")
+            continue
+        row = await conn.fetchrow(
+            """
+            INSERT INTO knowledge_base
+                (user_id, enterprise_id, department_id, creator_id, name,
+                 description, visibility, created_at, updated_at)
+            VALUES ($1,$2,$3,$4,$5,$6,$7,$8,$8)
+            RETURNING id
+            """,
+            creator_id, enterprise_id, dept_id, creator_id,
+            kb["name"], kb["description"], kb["visibility"], now,
+        )
+        kb_map[kb["name"]] = row["id"]
+        print(f"✅ 创建知识库「{kb['name']}」({kb['visibility']}) id={row['id']}")
+
+    # 6. 文件记录（模拟已处理完成）
+    file_defs = [
+        {
+            "kb_name": "前端组公共手册",
+            "uploader_key": "leader_frontend",
+            "file_name": "前端规范v1.0.pdf",
+            "file_size": 204800,
+            "file_type": "pdf",
+        },
+        {
+            "kb_name": "前端组公共手册",
+            "uploader_key": "emp1_frontend",
+            "file_name": "组件库使用指南.docx",
+            "file_size": 153600,
+            "file_type": "docx",
+        },
+        {
+            "kb_name": "前端组公共手册",
+            "uploader_key": "emp1_backend",
+            "file_name": "接口文档摘要.txt",
+            "file_size": 8192,
+            "file_type": "txt",
+        },
+        {
+            "kb_name": "前端员工甲的私人笔记",
+            "uploader_key": "emp1_frontend",
+            "file_name": "Vue3学习笔记.txt",
+            "file_size": 4096,
+            "file_type": "txt",
+        },
+        {
+            "kb_name": "企业全员知识库",
+            "uploader_key": "admin1",
+            "file_name": "员工手册2026.pdf",
+            "file_size": 512000,
+            "file_type": "pdf",
+        },
+        {
+            "kb_name": "产品部资料库",
+            "uploader_key": "emp1_product",
+            "file_name": "需求评审记录.xlsx",
+            "file_size": 65536,
+            "file_type": "xlsx",
+        },
+    ]
+    file_id_map: dict[str, int] = {}
+    for fd in file_defs:
+        kb_id = kb_map.get(fd["kb_name"])
+        uploader_id = user_map.get(fd["uploader_key"])
+        if not kb_id or not uploader_id:
+            continue
+        existing = await conn.fetchval(
+            """
+            SELECT id FROM knowledge_base_file
+            WHERE knowledge_base_id = $1 AND file_name = $2 AND is_deleted = FALSE
+            """,
+            kb_id, fd["file_name"],
+        )
+        if existing:
+            file_id_map[fd["file_name"]] = existing
+            print(f"ℹ️  文件「{fd['file_name']}」已存在 id={existing}")
+            continue
+        row = await conn.fetchrow(
+            """
+            INSERT INTO knowledge_base_file
+                (knowledge_base_id, user_id, file_name, file_path, file_size,
+                 file_type, status, chunk_count, created_at, updated_at)
+            VALUES ($1,$2,$3,$4,$5,$6,'completed',$7,$8,$8)
+            RETURNING id
+            """,
+            kb_id, uploader_id, fd["file_name"],
+            f"/fake/path/{fd['file_name']}", fd["file_size"],
+            fd["file_type"], 5, now,
+        )
+        file_id_map[fd["file_name"]] = row["id"]
+        print(f"✅ 创建文件「{fd['file_name']}」id={row['id']}  uploader={fd['uploader_key']}")
+
+    # 7. 审计日志（模拟历史操作）
+    audit_entries = [
+        # 上传操作
+        {"actor": "emp1_frontend", "action": "upload",
+         "kb": "前端组公共手册", "file": "组件库使用指南.docx",
+         "dept_key": "frontend"},
+        {"actor": "emp1_backend",  "action": "upload",
+         "kb": "前端组公共手册", "file": "接口文档摘要.txt",
+         "dept_key": "backend"},
+        # 删除操作（领导删下属文件）
+        {"actor": "leader_frontend", "action": "delete",
+         "kb": "前端组公共手册", "file": "接口文档摘要.txt",
+         "target": "emp1_backend", "dept_key": "frontend"},
+        # 权限变更
+        {"actor": "leader_frontend", "action": "permission_change",
+         "target": "emp2_frontend", "dept_key": "frontend",
+         "meta": {"field": "allow_kb_upload", "old": True, "new": False}},
+        # 下载
+        {"actor": "emp1_frontend", "action": "download",
+         "kb": "前端组公共手册", "file": "前端规范v1.0.pdf",
+         "dept_key": "frontend"},
+        # Admin 全局操作
+        {"actor": "admin1", "action": "create_kb",
+         "kb": "企业全员知识库", "dept_key": None},
+    ]
+    for ae in audit_entries:
+        actor_id    = user_map.get(ae["actor"])
+        target_id   = user_map.get(ae.get("target")) if ae.get("target") else None
+        kb_id       = kb_map.get(ae.get("kb")) if ae.get("kb") else None
+        file_id_val = file_id_map.get(ae.get("file")) if ae.get("file") else None
+        dept_id     = dept_map.get(ae.get("dept_key")) if ae.get("dept_key") else None
+        meta_str    = json.dumps(ae.get("meta", {})) if ae.get("meta") else None
+        await conn.execute(
+            """
+            INSERT INTO kb_audit_log
+                (enterprise_id, actor_id, action, target_user_id, department_id,
+                 kb_id, file_id, ip, metadata, created_at)
+            VALUES ($1,$2,$3,$4,$5,$6,$7,'127.0.0.1',$8::jsonb,$9)
+            """,
+            enterprise_id, actor_id, ae["action"], target_id, dept_id,
+            kb_id, file_id_val, meta_str, now,
+        )
+    print(f"✅ 写入 {len(audit_entries)} 条审计日志")
+
+    await conn.close()
+
+    print("\n=== 测试数据写入完成 ===")
+    print(f"\n所有测试账号密码：{PASSWORD}")
+    print("\n账号列表：")
+    headers = ["用户名", "角色", "部门", "allow_upload"]
+    rows_display = [
+        ("admin1",          "admin",    "—",    "✓"),
+        ("leader_tech",     "leader",   "技术部",  "✓"),
+        ("leader_frontend", "leader",   "前端组",  "✓"),
+        ("emp1_frontend",   "employee", "前端组",  "✓"),
+        ("emp2_frontend",   "employee", "前端组",  "✗（已禁）"),
+        ("emp1_backend",    "employee", "后端组",  "✓"),
+        ("leader_product",  "leader",   "产品部",  "✓"),
+        ("emp1_product",    "employee", "产品部",  "✓"),
+    ]
+    col_w = [18, 10, 8, 12]
+    sep = "+" + "+".join("-" * (w + 2) for w in col_w) + "+"
+    fmt = "| " + " | ".join(f"{{:<{w}}}" for w in col_w) + " |"
+    print(sep)
+    print(fmt.format(*headers))
+    print(sep)
+    for r in rows_display:
+        print(fmt.format(*r))
+    print(sep)
+
+    print("\n知识库：")
+    for name, kid in kb_map.items():
+        print(f"  id={kid}  {name}")
+
+
+if __name__ == "__main__":
+    asyncio.run(seed())
diff --git a/backend/services/admin_user_service.py b/backend/services/admin_user_service.py
index f81ae3b..b4db268 100644
--- a/backend/services/admin_user_service.py
+++ b/backend/services/admin_user_service.py
@@ -79,7 +79,7 @@ class AdminUserService:
         rows = await conn.fetch(
             f"""
             SELECT id, username, email, phone, display_name, enterprise_id, department_id,
-                   role, is_active, is_first_login, created_at, last_login_at
+                   role, is_active, is_first_login, allow_kb_upload, created_at, last_login_at
             FROM user_list
             WHERE {where_sql}
             ORDER BY id DESC
@@ -98,7 +98,7 @@ class AdminUserService:
         row = await conn.fetchrow(
             """
             SELECT id, username, email, phone, display_name, enterprise_id, department_id,
-                   role, is_active, is_first_login, created_at, last_login_at
+                   role, is_active, is_first_login, allow_kb_upload, created_at, last_login_at
             FROM user_list
             WHERE id = $1 AND enterprise_id = $2
             """,
@@ -136,7 +136,7 @@ class AdminUserService:
             )
             VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, TRUE, $10, $10)
             RETURNING id, username, email, phone, display_name, enterprise_id, department_id,
-                      role, is_active, is_first_login, created_at, last_login_at
+                      role, is_active, is_first_login, allow_kb_upload, created_at, last_login_at
             """,
             data.username,
             str(data.email),
@@ -173,7 +173,7 @@ class AdminUserService:
             row = await conn.fetchrow(
                 """
                 SELECT id, username, email, phone, display_name, enterprise_id, department_id,
-                       role, is_active, is_first_login, created_at, last_login_at
+                       role, is_active, is_first_login, allow_kb_upload, created_at, last_login_at
                 FROM user_list WHERE id = $1 AND enterprise_id = $2
                 """,
                 user_id,
@@ -217,6 +217,7 @@ class AdminUserService:
             "role",
             "is_active",
             "hashed_password",
+            "allow_kb_upload",
         )
         for key, val in updates.items():
             if key not in allowed:
@@ -228,7 +229,7 @@ class AdminUserService:
             row = await conn.fetchrow(
                 """
                 SELECT id, username, email, phone, display_name, enterprise_id, department_id,
-                       role, is_active, is_first_login, created_at, last_login_at
+                       role, is_active, is_first_login, allow_kb_upload, created_at, last_login_at
                 FROM user_list WHERE id = $1 AND enterprise_id = $2
                 """,
                 user_id,
@@ -244,7 +245,7 @@ class AdminUserService:
             SET {", ".join(fields)}, updated_at = CURRENT_TIMESTAMP
             WHERE id = ${wid} AND enterprise_id = ${we}
             RETURNING id, username, email, phone, display_name, enterprise_id, department_id,
-                      role, is_active, is_first_login, created_at, last_login_at
+                      role, is_active, is_first_login, allow_kb_upload, created_at, last_login_at
         """
         row = await conn.fetchrow(q, *params)
         return dict(row) if row else None
diff --git a/backend/services/audit_service.py b/backend/services/audit_service.py
new file mode 100644
index 0000000..9513c37
--- /dev/null
+++ b/backend/services/audit_service.py
@@ -0,0 +1,155 @@
+"""
+知识库操作审计日志服务
+
+action 枚举值
+-------------
+upload            上传文件到知识库
+download          下载/查看文件（含 URL 预览）
+delete            删除文件
+archive           归档文件（预留）
+create_kb         创建知识库
+delete_kb         删除知识库
+permission_change 修改下级用户权限（如关闭/开启上传权限）
+"""
+from typing import Any, Dict, List, Optional, Tuple
+import asyncpg
+
+from logger.logging import get_logger
+
+logger = get_logger(__name__)
+
+VALID_ACTIONS = frozenset({
+    "upload",
+    "download",
+    "delete",
+    "archive",
+    "create_kb",
+    "delete_kb",
+    "permission_change",
+})
+
+
+class AuditService:
+
+    @staticmethod
+    async def write(
+        conn: asyncpg.Connection,
+        *,
+        enterprise_id: int,
+        actor_id: int,
+        action: str,
+        target_user_id: Optional[int] = None,
+        department_id: Optional[int] = None,
+        kb_id: Optional[int] = None,
+        file_id: Optional[int] = None,
+        ip: Optional[str] = None,
+        user_agent: Optional[str] = None,
+        metadata: Optional[Dict[str, Any]] = None,
+    ) -> None:
+        """写入一条审计日志（非阻塞，异常仅记录不抛出）。"""
+        try:
+            import json
+            meta_json = json.dumps(metadata, ensure_ascii=False) if metadata else None
+            await conn.execute(
+                """
+                INSERT INTO kb_audit_log
+                    (enterprise_id, actor_id, action, target_user_id, department_id,
+                     kb_id, file_id, ip, user_agent, metadata)
+                VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10::jsonb)
+                """,
+                enterprise_id,
+                actor_id,
+                action,
+                target_user_id,
+                department_id,
+                kb_id,
+                file_id,
+                ip,
+                user_agent,
+                meta_json,
+            )
+        except Exception as e:
+            logger.warning(f"写入审计日志失败（不影响主流程）: {e}")
+
+    @staticmethod
+    async def list_logs(
+        conn: asyncpg.Connection,
+        enterprise_id: int,
+        *,
+        department_ids: Optional[List[int]] = None,  # None 表示不过滤（admin 全量）
+        actor_id: Optional[int] = None,
+        kb_id: Optional[int] = None,
+        action: Optional[str] = None,
+        page: int = 1,
+        page_size: int = 20,
+    ) -> Tuple[List[dict], int]:
+        """
+        查询审计日志。
+        - department_ids=None  -> 全企业（admin 用）
+        - department_ids=[...]  -> 限制在给定部门内（leader 用，按 actor 所在部门过滤）
+        """
+        offset = (page - 1) * page_size
+        conds = ["l.enterprise_id = $1"]
+        params: list = [enterprise_id]
+
+        if department_ids is not None:
+            if not department_ids:
+                return [], 0
+            conds.append(f"l.department_id = ANY(${len(params)+1}::int[])")
+            params.append(department_ids)
+
+        if actor_id is not None:
+            conds.append(f"l.actor_id = ${len(params)+1}")
+            params.append(actor_id)
+
+        if kb_id is not None:
+            conds.append(f"l.kb_id = ${len(params)+1}")
+            params.append(kb_id)
+
+        if action is not None:
+            conds.append(f"l.action = ${len(params)+1}")
+            params.append(action)
+
+        where = " AND ".join(conds)
+        count_sql = f"SELECT COUNT(*) FROM kb_audit_log l WHERE {where}"
+        total = await conn.fetchval(count_sql, *params)
+
+        lim_ph = len(params) + 1
+        off_ph = len(params) + 2
+        params.extend([page_size, offset])
+
+        rows = await conn.fetch(
+            f"""
+            SELECT
+                l.id, l.enterprise_id, l.actor_id, l.action,
+                l.target_user_id, l.department_id, l.kb_id, l.file_id,
+                l.ip, l.metadata, l.created_at,
+                COALESCE(NULLIF(TRIM(u.display_name),''), u.username) AS actor_name,
+                COALESCE(NULLIF(TRIM(tu.display_name),''), tu.username) AS target_name,
+                d.name AS department_name,
+                kb.name AS kb_name,
+                kf.file_name
+            FROM kb_audit_log l
+            LEFT JOIN user_list u  ON u.id = l.actor_id
+            LEFT JOIN user_list tu ON tu.id = l.target_user_id
+            LEFT JOIN department d ON d.id = l.department_id
+            LEFT JOIN knowledge_base kb ON kb.id = l.kb_id
+            LEFT JOIN knowledge_base_file kf ON kf.id = l.file_id
+            WHERE {where}
+            ORDER BY l.created_at DESC
+            LIMIT ${lim_ph} OFFSET ${off_ph}
+            """,
+            *params,
+        )
+        import json as _json
+        result = []
+        for r in rows:
+            row = dict(r)
+            meta = row.get("metadata")
+            if isinstance(meta, str):
+                try:
+                    row["metadata"] = _json.loads(meta)
+                except Exception:
+                    row["metadata"] = None
+            result.append(row)
+        return result, int(total or 0)
diff --git a/backend/services/department_service.py b/backend/services/department_service.py
index 317711b..f2b1bd2 100644
--- a/backend/services/department_service.py
+++ b/backend/services/department_service.py
@@ -3,6 +3,22 @@ from typing import List, Optional
 import asyncpg
 
 
+async def get_subtree_ids(conn: asyncpg.Connection, dept_id: int) -> List[int]:
+    """递归查询某部门及其所有子孙部门的 ID 列表。"""
+    rows = await conn.fetch(
+        """
+        WITH RECURSIVE sub AS (
+            SELECT id FROM department WHERE id = $1
+            UNION ALL
+            SELECT d.id FROM department d JOIN sub ON d.parent_id = sub.id
+        )
+        SELECT id FROM sub
+        """,
+        dept_id,
+    )
+    return [r["id"] for r in rows]
+
+
 class DepartmentService:
     @staticmethod
     async def list_by_enterprise(
@@ -10,10 +26,13 @@ class DepartmentService:
     ) -> List[dict]:
         rows = await conn.fetch(
             """
-            SELECT id, enterprise_id, name, parent_id, created_at, updated_at
-            FROM department
-            WHERE enterprise_id = $1
-            ORDER BY id ASC
+            SELECT d.id, d.enterprise_id, d.name, d.parent_id,
+                   d.leader_user_id, d.created_at, d.updated_at,
+                   COALESCE(NULLIF(TRIM(u.display_name),''), u.username) AS leader_name
+            FROM department d
+            LEFT JOIN user_list u ON u.id = d.leader_user_id
+            WHERE d.enterprise_id = $1
+            ORDER BY d.id ASC
             """,
             enterprise_id,
         )
@@ -25,15 +44,39 @@ class DepartmentService:
     ) -> Optional[dict]:
         row = await conn.fetchrow(
             """
-            SELECT id, enterprise_id, name, parent_id, created_at, updated_at
-            FROM department
-            WHERE id = $1 AND enterprise_id = $2
+            SELECT d.id, d.enterprise_id, d.name, d.parent_id,
+                   d.leader_user_id, d.created_at, d.updated_at,
+                   COALESCE(NULLIF(TRIM(u.display_name),''), u.username) AS leader_name
+            FROM department d
+            LEFT JOIN user_list u ON u.id = d.leader_user_id
+            WHERE d.id = $1 AND d.enterprise_id = $2
             """,
             dept_id,
             enterprise_id,
         )
         return dict(row) if row else None
 
+    @staticmethod
+    async def set_leader(
+        conn: asyncpg.Connection,
+        dept_id: int,
+        enterprise_id: int,
+        leader_user_id: Optional[int],
+    ) -> Optional[dict]:
+        """设置或清除部门负责人。leader_user_id=None 表示清除。"""
+        row = await conn.fetchrow(
+            """
+            UPDATE department
+            SET leader_user_id = $1, updated_at = CURRENT_TIMESTAMP
+            WHERE id = $2 AND enterprise_id = $3
+            RETURNING id, enterprise_id, name, parent_id, leader_user_id, created_at, updated_at
+            """,
+            leader_user_id,
+            dept_id,
+            enterprise_id,
+        )
+        return dict(row) if row else None
+
     @staticmethod
     async def create(
         conn: asyncpg.Connection,
diff --git a/backend/services/knowledge_base_file_service.py b/backend/services/knowledge_base_file_service.py
index 7cd80c8..853d53e 100644
--- a/backend/services/knowledge_base_file_service.py
+++ b/backend/services/knowledge_base_file_service.py
@@ -159,28 +159,22 @@ class KnowledgeBaseFileService:
     async def get_file_by_id(
         conn: asyncpg.Connection,
         file_id: int,
-        user_id: int
+        user_id: int,
     ) -> Optional[KnowledgeBaseFile]:
         """
-        根据 ID 获取文件
-        
-        Args:
-            conn: 数据库连接
-            file_id: 文件 ID
-            user_id: 用户 ID
-            
-        Returns:
-            Optional[KnowledgeBaseFile]: 文件对象
+        根据 ID 获取文件（不再强制 user_id 过滤，权限校验由路由层完成）。
+
+        user_id 参数保留以兼容旧调用签名，不再作为查询条件。
         """
         try:
             row = await conn.fetchrow(
                 """
-                SELECT id, knowledge_base_id, user_id, file_name, file_path, file_size, 
+                SELECT id, knowledge_base_id, user_id, file_name, file_path, file_size,
                        file_type, status, chunk_count, created_at, updated_at, is_deleted, deleted_at
                 FROM knowledge_base_file
-                WHERE id = $1 AND user_id = $2 AND is_deleted = FALSE
+                WHERE id = $1 AND is_deleted = FALSE
                 """,
-                file_id, user_id
+                file_id,
             )
             
             if row:
@@ -197,49 +191,44 @@ class KnowledgeBaseFileService:
         knowledge_base_id: int,
         user_id: int,
         page: int = 1,
-        page_size: int = 20
-    ) -> Tuple[List[KnowledgeBaseFile], int]:
+        page_size: int = 20,
+    ) -> Tuple[List[dict], int]:
         """
-        获取知识库的文件列表
-        
-        Args:
-            conn: 数据库连接
-            knowledge_base_id: 知识库 ID
-            user_id: 用户 ID
-            page: 页码
-            page_size: 每页数量
-            
-        Returns:
-            Tuple[List[KnowledgeBaseFile], int]: (文件列表, 总数量)
+        获取知识库的文件列表（返回该 KB 内所有文件的原始 dict）。
+
+        KB 访问权限应由调用方（路由层 _check_kb_access）提前完成校验。
+        文件可见性随 KB 可见性走：能看到 KB 即可看到库内全部文件，
+        使同部门员工互相查看对方上传的文件成为可能。
+        user_id 参数保留以兼容旧调用签名，不再作为过滤条件。
         """
         try:
             offset = (page - 1) * page_size
-            
-            # 获取总数
+
             total = await conn.fetchval(
                 """
                 SELECT COUNT(*) FROM knowledge_base_file
-                WHERE knowledge_base_id = $1 AND user_id = $2 AND is_deleted = FALSE
+                WHERE knowledge_base_id = $1 AND is_deleted = FALSE
                 """,
-                knowledge_base_id, user_id
+                knowledge_base_id,
             )
-            
-            # 获取列表
+
             rows = await conn.fetch(
                 """
-                SELECT id, knowledge_base_id, user_id, file_name, file_path, file_size, 
-                       file_type, status, chunk_count, created_at, updated_at, is_deleted, deleted_at
-                FROM knowledge_base_file
-                WHERE knowledge_base_id = $1 AND user_id = $2 AND is_deleted = FALSE
-                ORDER BY created_at DESC
-                LIMIT $3 OFFSET $4
+                SELECT f.id, f.knowledge_base_id, f.user_id, f.file_name, f.file_path,
+                       f.file_size, f.file_type, f.status, f.chunk_count,
+                       f.created_at, f.updated_at, f.is_deleted, f.deleted_at,
+                       COALESCE(NULLIF(TRIM(u.display_name),''), u.username) AS uploader_name
+                FROM knowledge_base_file f
+                LEFT JOIN user_list u ON u.id = f.user_id
+                WHERE f.knowledge_base_id = $1 AND f.is_deleted = FALSE
+                ORDER BY f.created_at DESC
+                LIMIT $2 OFFSET $3
                 """,
-                knowledge_base_id, user_id, page_size, offset
+                knowledge_base_id, page_size, offset,
             )
-            
-            files = [KnowledgeBaseFile(**dict(row)) for row in rows]
-            return files, total
-            
+
+            return [dict(r) for r in rows], int(total or 0)
+
         except Exception as e:
             logger.error(f"获取文件列表失败: {e}")
             raise Exception(f"获取文件列表失败: {str(e)}")
@@ -500,50 +489,60 @@ class KnowledgeBaseFileService:
     async def delete_file(
         conn: asyncpg.Connection,
         file_id: int,
-        user_id: int
+        user_id: int,
+        bypass_owner_check: bool = False,
     ) -> Tuple[bool, List[str]]:
         """
-        删除文件（软删除）
-        同时删除文件的所有文档块
-        
-        Args:
-            conn: 数据库连接
-            file_id: 文件 ID
-            user_id: 用户 ID
-            
-        Returns:
-            Tuple[bool, List[str]]: (是否删除成功, 向量 ID 列表)
+        删除文件（软删除），同时删除文件的所有文档块。
+
+        bypass_owner_check=True 时跳过 user_id 校验（供 admin/leader 路径使用，
+        调用方须已在路由层完成 can_delete_file 权限判断）。
         """
         try:
-            # 先检查文件是否存在且属于该用户
-            file_record = await conn.fetchrow(
-                """
-                SELECT id, knowledge_base_id, file_name 
-                FROM knowledge_base_file
-                WHERE id = $1 AND user_id = $2 AND is_deleted = FALSE
-                """,
-                file_id, user_id
-            )
-            
+            if bypass_owner_check:
+                file_record = await conn.fetchrow(
+                    """
+                    SELECT id, knowledge_base_id, file_name
+                    FROM knowledge_base_file
+                    WHERE id = $1 AND is_deleted = FALSE
+                    """,
+                    file_id,
+                )
+            else:
+                file_record = await conn.fetchrow(
+                    """
+                    SELECT id, knowledge_base_id, file_name
+                    FROM knowledge_base_file
+                    WHERE id = $1 AND user_id = $2 AND is_deleted = FALSE
+                    """,
+                    file_id, user_id,
+                )
+
             if not file_record:
                 return False, []
-            
-            # 获取文件的向量 ID 列表（在删除 chunk 之前获取）
+
             vector_ids = await KnowledgeBaseFileService.get_file_vector_ids(conn, file_id)
-            
-            # 删除文件的所有文档块（物理删除）
             deleted_chunks = await KnowledgeBaseFileService.delete_file_chunks(conn, file_id)
-            
-            # 执行软删除文件记录
-            result = await conn.execute(
-                """
-                UPDATE knowledge_base_file
-                SET is_deleted = TRUE, deleted_at = CURRENT_TIMESTAMP
-                WHERE id = $1 AND user_id = $2 AND is_deleted = FALSE
-                """,
-                file_id, user_id
-            )
-            
+
+            if bypass_owner_check:
+                result = await conn.execute(
+                    """
+                    UPDATE knowledge_base_file
+                    SET is_deleted = TRUE, deleted_at = CURRENT_TIMESTAMP
+                    WHERE id = $1 AND is_deleted = FALSE
+                    """,
+                    file_id,
+                )
+            else:
+                result = await conn.execute(
+                    """
+                    UPDATE knowledge_base_file
+                    SET is_deleted = TRUE, deleted_at = CURRENT_TIMESTAMP
+                    WHERE id = $1 AND user_id = $2 AND is_deleted = FALSE
+                    """,
+                    file_id, user_id,
+                )
+
             if result == "UPDATE 1":
                 logger.info(
                     f"删除文件 ID: {file_id}, 文件名: {file_record['file_name']}, "
@@ -551,7 +550,7 @@ class KnowledgeBaseFileService:
                 )
                 return True, vector_ids
             return False, []
-            
+
         except Exception as e:
             logger.error(f"删除文件失败: {e}")
             return False, []
diff --git a/frontend/src/components/AppSidebarNav.vue b/frontend/src/components/AppSidebarNav.vue
index 71161b6..129e0d0 100644
--- a/frontend/src/components/AppSidebarNav.vue
+++ b/frontend/src/components/AppSidebarNav.vue
@@ -12,9 +12,29 @@
       <i class="bi bi-book"></i>
       <span>知识图谱</span>
     </router-link>
+    <router-link
+      v-if="isLeaderOrAdmin"
+      to="/team"
+      class="nav-menu-item"
+      active-class="router-link-active"
+    >
+      <i class="bi bi-people"></i>
+      <span>团队管理</span>
+    </router-link>
   </div>
 </template>
 
+<script setup>
+import { computed } from 'vue'
+import { useAuthStore } from '../stores/auth'
+
+const authStore = useAuthStore()
+const isLeaderOrAdmin = computed(() => {
+  const role = authStore.user?.role
+  return role === 'leader' || role === 'admin'
+})
+</script>
+
 <style scoped>
 .nav-menu-section {
   border-bottom: 1px solid rgba(255, 255, 255, 0.1) !important;
diff --git a/frontend/src/router/index.js b/frontend/src/router/index.js
index b207f7a..b94f453 100644
--- a/frontend/src/router/index.js
+++ b/frontend/src/router/index.js
@@ -35,6 +35,12 @@ const routes = [
   { path: '/star-graph', redirect: '/knowledge-graph' },
   { path: '/relation-graph', redirect: '/knowledge-graph' },
   { path: '/novel-kg', redirect: '/knowledge-graph' },
+  {
+    path: '/team',
+    name: 'TeamManagement',
+    component: () => import('../views/TeamManagement.vue'),
+    meta: { requiresAuth: true }
+  },
   {
     path: '/auth/github/callback',
     name: 'GithubCallback',
diff --git a/frontend/src/views/KnowledgeBase.vue b/frontend/src/views/KnowledgeBase.vue
index 8218e0c..1642c1e 100644
--- a/frontend/src/views/KnowledgeBase.vue
+++ b/frontend/src/views/KnowledgeBase.vue
@@ -178,8 +178,14 @@
                   <i class="bi bi-files"></i> 文件管理
                 </h5>
                 
+                <!-- 上传被禁用提示 -->
+              <div v-if="!canUpload" class="alert alert-warning py-2 small mb-3">
+                <i class="bi bi-lock-fill me-1"></i>
+                您的知识库文件上传权限已被关闭，如需开启请联系部门领导或管理员。
+              </div>
+
                 <!-- 上传方式切换 -->
-              <div class="upload-mode-tabs">
+              <div class="upload-mode-tabs" v-if="canUpload">
                     <button 
                   class="upload-mode-tab" 
                       :class="{ active: uploadMode === 'file' }"
@@ -199,7 +205,7 @@
               </div>
 
                 <!-- 文件上传 -->
-              <div v-if="uploadMode === 'file'" class="upload-section">
+              <div v-if="uploadMode === 'file' && canUpload" class="upload-section">
                   <label class="upload-btn">
                     <i class="bi bi-upload"></i> 上传文件
                     <input 
@@ -214,7 +220,7 @@
                 </div>
 
                 <!-- URL 上传 -->
-              <div v-if="uploadMode === 'url'" class="upload-section">
+              <div v-if="uploadMode === 'url' && canUpload" class="upload-section">
                 <label class="upload-label">
                     <i class="bi bi-link-45deg"></i> 输入网页 URL
                   </label>
@@ -263,6 +269,7 @@
                     <div class="file-table-cell">大小</div>
                     <div class="file-table-cell">状态</div>
                     <div class="file-table-cell">文档块</div>
+                    <div class="file-table-cell">上传者</div>
                     <div class="file-table-cell">上传时间</div>
                     <div class="file-table-cell">操作</div>
                   </div>
@@ -322,12 +329,18 @@
                             </span>
                       </div>
                       <div class="file-table-cell">{{ file.chunk_count }}</div>
+                      <div class="file-table-cell">
+                        <span class="small" :class="file.is_mine ? 'text-muted' : 'text-info'">
+                          {{ file.is_mine ? '我' : (file.uploader_name || '他人') }}
+                        </span>
+                      </div>
                       <div class="file-table-cell">{{ formatDate(file.created_at) }}</div>
                       <div class="file-table-cell">
                             <button 
-                              @click="confirmDeleteFile(file.id)" 
+                              v-if="file.is_mine || canDeleteOthers"
+                              @click="confirmDeleteFile(file.id, file.file_name, file.is_mine)" 
                           class="file-delete-btn"
-                              title="删除"
+                              :title="file.is_mine ? '删除' : '以领导身份删除下属文件'"
                             >
                               <i class="bi bi-trash"></i>
                             </button>
@@ -864,6 +877,19 @@ const canCreateTask = computed(() => {
          processingForm.value.selectedFiles.length > 0
 })
 
+// 是否允许上传（后端返回 403 时也会拦截，这里做前端提示）
+const canUpload = computed(() => {
+  const u = authStore.user
+  if (!u) return false
+  return u.allow_kb_upload !== false
+})
+
+// 领导或 admin 可以删除他人文件
+const canDeleteOthers = computed(() => {
+  const u = authStore.user
+  return u && (u.role === 'leader' || u.role === 'admin')
+})
+
 // 格式化日期
 function formatDate(dateString) {
   if (!dateString) return ''
@@ -1239,11 +1265,12 @@ async function loadFiles(page = 1) {
 }
 
 // 确认删除文件
-function confirmDeleteFile(fileId) {
-  const file = files.value.find(f => f.id === fileId)
-  if (!file) return
-
-  if (confirm(`确定要删除文件"${file.file_name}"吗？此操作不可恢复。`)) {
+function confirmDeleteFile(fileId, fileName, isMine) {
+  const name = fileName || (files.value.find(f => f.id === fileId)?.file_name) || '该文件'
+  const tip = isMine
+    ? `确定要删除文件"${name}"吗？此操作不可恢复。`
+    : `您正在以领导身份删除下属上传的文件"${name}"，确认继续？`
+  if (confirm(tip)) {
     deleteFile(fileId)
   }
 }
diff --git a/frontend/src/views/TeamManagement.vue b/frontend/src/views/TeamManagement.vue
new file mode 100644
index 0000000..bbc68d8
--- /dev/null
+++ b/frontend/src/views/TeamManagement.vue
@@ -0,0 +1,363 @@
+<template>
+  <AppSidebarShell>
+    <!-- 侧边栏内容：审计日志快速入口 -->
+    <div class="p-3">
+      <p class="text-white-50 small mb-2">团队管理</p>
+      <div
+        class="nav-sub-item"
+        :class="{ active: activeTab === 'members' }"
+        @click="activeTab = 'members'"
+      >
+        <i class="bi bi-person-lines-fill"></i> 成员列表
+      </div>
+      <div
+        class="nav-sub-item"
+        :class="{ active: activeTab === 'logs' }"
+        @click="activeTab = 'logs'"
+      >
+        <i class="bi bi-clipboard-data"></i> 操作日志
+      </div>
+    </div>
+  </AppSidebarShell>
+
+  <!-- 主内容区 -->
+  <div class="team-main flex-grow-1 p-4">
+    <!-- 成员列表 Tab -->
+    <template v-if="activeTab === 'members'">
+      <div class="d-flex align-items-center justify-content-between mb-3">
+        <h4 class="mb-0">
+          <i class="bi bi-people me-2"></i>我管辖的成员
+        </h4>
+      </div>
+
+      <div v-if="loadingMembers" class="text-muted">加载中…</div>
+      <div v-else>
+        <div class="table-responsive">
+          <table class="table table-hover align-middle table-sm bg-white rounded shadow-sm">
+            <thead class="table-light">
+              <tr>
+                <th>姓名</th>
+                <th>用户名</th>
+                <th>部门</th>
+                <th>角色</th>
+                <th>状态</th>
+                <th title="知识库上传权限">上传权限</th>
+                <th>操作</th>
+              </tr>
+            </thead>
+            <tbody>
+              <tr v-for="m in members" :key="m.id">
+                <td class="fw-semibold">{{ m.display_name || m.username }}</td>
+                <td class="text-muted small">{{ m.username }}</td>
+                <td>{{ m.department_name || '—' }}</td>
+                <td>
+                  <span class="badge" :class="roleBadge(m.role)">{{ m.role }}</span>
+                </td>
+                <td>
+                  <span :class="m.is_active ? 'text-success' : 'text-danger'">
+                    {{ m.is_active ? '正常' : '停用' }}
+                  </span>
+                </td>
+                <td>
+                  <span :class="m.allow_kb_upload ? 'text-success' : 'text-danger'">
+                    {{ m.allow_kb_upload ? '✓ 允许' : '✗ 禁止' }}
+                  </span>
+                </td>
+                <td>
+                  <button
+                    class="btn btn-sm"
+                    :class="m.allow_kb_upload ? 'btn-outline-warning' : 'btn-outline-success'"
+                    @click="toggleUpload(m)"
+                    :disabled="saving === m.id"
+                  >
+                    {{ m.allow_kb_upload ? '关闭上传' : '开启上传' }}
+                  </button>
+                </td>
+              </tr>
+            </tbody>
+          </table>
+          <p v-if="!members.length" class="text-muted small">暂无下属成员。</p>
+        </div>
+
+        <!-- 分页 -->
+        <nav v-if="memberTotal > memberPageSize" class="mt-2">
+          <ul class="pagination pagination-sm">
+            <li class="page-item" :class="{ disabled: memberPage <= 1 }">
+              <a class="page-link" href="#" @click.prevent="memberPage > 1 && memberPage-- && loadMembers()">上一页</a>
+            </li>
+            <li class="page-item disabled">
+              <span class="page-link">{{ memberPage }} / {{ memberTotalPages }}（共 {{ memberTotal }} 人）</span>
+            </li>
+            <li class="page-item" :class="{ disabled: memberPage >= memberTotalPages }">
+              <a class="page-link" href="#" @click.prevent="memberPage < memberTotalPages && memberPage++ && loadMembers()">下一页</a>
+            </li>
+          </ul>
+        </nav>
+      </div>
+    </template>
+
+    <!-- 操作日志 Tab -->
+    <template v-if="activeTab === 'logs'">
+      <div class="d-flex align-items-center justify-content-between mb-3">
+        <h4 class="mb-0">
+          <i class="bi bi-clipboard-data me-2"></i>部门操作日志
+        </h4>
+      </div>
+
+      <!-- 筛选 -->
+      <div class="card card-body mb-3 shadow-sm p-3">
+        <div class="row g-2 align-items-end">
+          <div class="col-auto">
+            <label class="form-label small mb-0">操作类型</label>
+            <select v-model="logFilter.action" class="form-select form-select-sm">
+              <option value="">全部</option>
+              <option value="upload">upload</option>
+              <option value="download">download</option>
+              <option value="delete">delete</option>
+              <option value="permission_change">permission_change</option>
+            </select>
+          </div>
+          <div class="col-auto d-flex gap-2 align-items-end">
+            <button class="btn btn-sm btn-primary" @click="applyLogFilter">搜索</button>
+            <button class="btn btn-sm btn-outline-secondary" @click="resetLogFilter">重置</button>
+          </div>
+        </div>
+      </div>
+
+      <div v-if="loadingLogs" class="text-muted">加载中…</div>
+      <div v-else>
+        <div class="table-responsive">
+          <table class="table table-sm table-hover bg-white rounded shadow-sm align-middle small">
+            <thead class="table-light">
+              <tr>
+                <th>时间</th>
+                <th>操作者</th>
+                <th>操作</th>
+                <th>被操作用户</th>
+                <th>知识库</th>
+                <th>文件</th>
+                <th>详情</th>
+              </tr>
+            </thead>
+            <tbody>
+              <tr v-for="r in logs" :key="r.id">
+                <td class="text-nowrap text-muted">{{ fmt(r.created_at) }}</td>
+                <td class="fw-semibold">{{ r.actor_name || r.actor_id }}</td>
+                <td>
+                  <span class="badge" :class="actionBadge(r.action)">{{ r.action }}</span>
+                </td>
+                <td>{{ r.target_name || (r.target_user_id ? '#' + r.target_user_id : '—') }}</td>
+                <td>{{ r.kb_name || (r.kb_id ? '#' + r.kb_id : '—') }}</td>
+                <td class="text-truncate" style="max-width:120px" :title="r.file_name">
+                  {{ r.file_name || '—' }}
+                </td>
+                <td class="text-muted">{{ metaStr(r.metadata) }}</td>
+              </tr>
+            </tbody>
+          </table>
+          <p v-if="!logs.length" class="text-muted small">暂无操作日志。</p>
+        </div>
+        <nav v-if="logTotal > logPageSize" class="mt-2">
+          <ul class="pagination pagination-sm">
+            <li class="page-item" :class="{ disabled: logPage <= 1 }">
+              <a class="page-link" href="#" @click.prevent="logPage > 1 && logPage-- && loadLogs()">上一页</a>
+            </li>
+            <li class="page-item disabled">
+              <span class="page-link">{{ logPage }} / {{ logTotalPages }}（共 {{ logTotal }} 条）</span>
+            </li>
+            <li class="page-item" :class="{ disabled: logPage >= logTotalPages }">
+              <a class="page-link" href="#" @click.prevent="logPage < logTotalPages && logPage++ && loadLogs()">下一页</a>
+            </li>
+          </ul>
+        </nav>
+      </div>
+    </template>
+  </div>
+</template>
+
+<script setup>
+import { computed, onMounted, reactive, ref, watch } from 'vue'
+import { useRouter } from 'vue-router'
+import axios from 'axios'
+import AppSidebarShell from '../components/AppSidebarShell.vue'
+import { useAuthStore } from '../stores/auth'
+import { apiUrl } from '../utils/apiUrl'
+
+const authStore = useAuthStore()
+const router = useRouter()
+
+// 鉴权：非 leader/admin 直接跳走
+if (!authStore.user || !['leader', 'admin'].includes(authStore.user.role)) {
+  router.replace('/chat')
+}
+
+const activeTab = ref('members')
+
+// ── 成员 ─────────────────────────────────────
+const members = ref([])
+const memberTotal = ref(0)
+const memberPage = ref(1)
+const memberPageSize = 20
+const loadingMembers = ref(false)
+const saving = ref(null)
+
+const memberTotalPages = computed(() => Math.max(1, Math.ceil(memberTotal.value / memberPageSize)))
+
+function authHeaders() {
+  return { Authorization: `Bearer ${authStore.token}` }
+}
+
+async function loadMembers() {
+  loadingMembers.value = true
+  try {
+    const { data } = await axios.get(
+      apiUrl(`/api/team/members?page=${memberPage.value}&page_size=${memberPageSize}`),
+      { headers: authHeaders() },
+    )
+    const raw = data?.data
+    members.value = raw?.items || []
+    memberTotal.value = raw?.total || 0
+  } catch (e) {
+    console.error(e)
+  } finally {
+    loadingMembers.value = false
+  }
+}
+
+async function toggleUpload(m) {
+  const next = !m.allow_kb_upload
+  if (!confirm(`确定要${next ? '开启' : '关闭'}「${m.display_name || m.username}」的知识库上传权限吗？`)) return
+  saving.value = m.id
+  try {
+    await axios.patch(
+      apiUrl(`/api/team/members/${m.id}/permissions`),
+      { allow_kb_upload: next },
+      { headers: authHeaders() },
+    )
+    m.allow_kb_upload = next
+  } catch (e) {
+    alert(e.response?.data?.detail || '操作失败')
+  } finally {
+    saving.value = null
+  }
+}
+
+// ── 操作日志 ─────────────────────────────────
+const logs = ref([])
+const logTotal = ref(0)
+const logPage = ref(1)
+const logPageSize = 30
+const loadingLogs = ref(false)
+const logFilter = reactive({ action: '' })
+const appliedLogFilter = reactive({ action: '' })
+
+const logTotalPages = computed(() => Math.max(1, Math.ceil(logTotal.value / logPageSize)))
+
+async function loadLogs() {
+  loadingLogs.value = true
+  try {
+    const qs = new URLSearchParams({ page: logPage.value, page_size: logPageSize })
+    if (appliedLogFilter.action) qs.set('action', appliedLogFilter.action)
+    const { data } = await axios.get(
+      apiUrl(`/api/team/audit-logs?${qs}`),
+      { headers: authHeaders() },
+    )
+    const raw = data?.data
+    logs.value = raw?.items || []
+    logTotal.value = raw?.total || 0
+  } catch (e) {
+    console.error(e)
+  } finally {
+    loadingLogs.value = false
+  }
+}
+
+function applyLogFilter() {
+  Object.assign(appliedLogFilter, logFilter)
+  logPage.value = 1
+  loadLogs()
+}
+
+function resetLogFilter() {
+  logFilter.action = ''
+  appliedLogFilter.action = ''
+  logPage.value = 1
+  loadLogs()
+}
+
+// ── 工具函数 ─────────────────────────────────
+function roleBadge(role) {
+  return { admin: 'bg-danger', leader: 'bg-primary', employee: 'bg-secondary' }[role] || 'bg-secondary'
+}
+
+function actionBadge(action) {
+  const m = {
+    upload: 'bg-success',
+    download: 'bg-info text-dark',
+    delete: 'bg-danger',
+    permission_change: 'bg-warning text-dark',
+    create_kb: 'bg-primary',
+  }
+  return m[action] || 'bg-secondary'
+}
+
+function fmt(t) {
+  if (!t) return '—'
+  try { return new Date(t).toLocaleString('zh-CN') } catch { return t }
+}
+
+function metaStr(meta) {
+  if (!meta) return ''
+  try {
+    const obj = typeof meta === 'string' ? JSON.parse(meta) : meta
+    return Object.entries(obj).map(([k, v]) => `${k}=${JSON.stringify(v)}`).join('  ')
+  } catch {
+    return String(meta)
+  }
+}
+
+watch(activeTab, (tab) => {
+  if (tab === 'members' && !members.value.length) loadMembers()
+  if (tab === 'logs' && !logs.value.length) loadLogs()
+})
+
+onMounted(() => {
+  loadMembers()
+})
+</script>
+
+<style scoped>
+.team-main {
+  background: #f5f7fa;
+  min-height: 100vh;
+  overflow-y: auto;
+}
+
+.nav-sub-item {
+  display: flex;
+  align-items: center;
+  gap: 0.6rem;
+  padding: 0.5rem 0.75rem;
+  border-radius: 8px;
+  cursor: pointer;
+  color: rgba(255, 255, 255, 0.7);
+  font-size: 0.9rem;
+  margin-bottom: 0.2rem;
+  transition: background 0.15s;
+}
+
+.nav-sub-item:hover,
+.nav-sub-item.active {
+  background: rgba(255, 255, 255, 0.08);
+  color: #fff;
+}
+
+.nav-sub-item.active {
+  background: rgba(74, 158, 255, 0.18);
+  color: #4a9eff;
+}
+
+.nav-sub-item i {
+  font-size: 0.95rem;
+}
+</style>
diff --git a/sql.txt b/sql.txt
new file mode 100644
index 0000000..27e92ae
--- /dev/null
+++ b/sql.txt
@@ -0,0 +1,675 @@
+create table public.chat_messages
+(
+    id               serial
+        primary key,
+    thread_id        varchar(255) not null,
+    checkpoint_id    varchar(255) not null,
+    message_index    integer      not null,
+    role             varchar(20)  not null,
+    content          text         not null,
+    injected_content text,
+    has_files        boolean                  default false,
+    metadata         jsonb,
+    created_at       timestamp with time zone default CURRENT_TIMESTAMP,
+    name             varchar(255),
+    constraint uk_checkpoint_message
+        unique (checkpoint_id, message_index)
+);
+
+comment on table public.chat_messages is '聊天消息表，存储用户原始消息和AI响应的关键信息';
+
+comment on column public.chat_messages.thread_id is '会话线程ID';
+
+comment on column public.chat_messages.checkpoint_id is '关联的checkpoint ID';
+
+comment on column public.chat_messages.message_index is '消息在checkpoint中的索引（从0开始）';
+
+comment on column public.chat_messages.role is '消息角色：user、assistant、system、tool';
+
+comment on column public.chat_messages.content is '用户的原始问题或AI的响应';
+
+comment on column public.chat_messages.injected_content is '注入给AI的完整内容（包含文件内容）';
+
+comment on column public.chat_messages.has_files is '是否关联了文件';
+
+comment on column public.chat_messages.metadata is '额外信息：token、模型、推理内容等';
+
+comment on column public.chat_messages.name is '工具消息时的工具名称（如 internet_search、text_to_image）';
+
+alter table public.chat_messages
+    owner to zuoleiroot;
+
+create index idx_chat_messages_thread_id
+    on public.chat_messages (thread_id);
+
+create index idx_chat_messages_checkpoint_id
+    on public.chat_messages (checkpoint_id);
+
+create index idx_chat_messages_thread_created
+    on public.chat_messages (thread_id asc, created_at desc);
+
+create index idx_chat_messages_role
+    on public.chat_messages (role);
+
+create index idx_chat_messages_has_files
+    on public.chat_messages (has_files);
+
+create index idx_chat_messages_metadata
+    on public.chat_messages using gin (metadata);
+
+create index idx_chat_messages_content_search
+    on public.chat_messages using gin (to_tsvector('simple'::regconfig, content));
+
+create table public.checkpoint_migrations
+(
+    v integer not null
+        primary key
+);
+
+alter table public.checkpoint_migrations
+    owner to zuoleiroot;
+
+create table public.checkpoints
+(
+    thread_id            text                      not null,
+    checkpoint_ns        text  default ''::text    not null,
+    checkpoint_id        text                      not null,
+    parent_checkpoint_id text,
+    type                 text,
+    checkpoint           jsonb                     not null,
+    metadata             jsonb default '{}'::jsonb not null,
+    primary key (thread_id, checkpoint_ns, checkpoint_id)
+);
+
+alter table public.checkpoints
+    owner to zuoleiroot;
+
+create index checkpoints_thread_id_idx
+    on public.checkpoints (thread_id);
+
+create table public.checkpoint_blobs
+(
+    thread_id     text                  not null,
+    checkpoint_ns text default ''::text not null,
+    channel       text                  not null,
+    version       text                  not null,
+    type          text                  not null,
+    blob          bytea,
+    primary key (thread_id, checkpoint_ns, channel, version)
+);
+
+alter table public.checkpoint_blobs
+    owner to zuoleiroot;
+
+create index checkpoint_blobs_thread_id_idx
+    on public.checkpoint_blobs (thread_id);
+
+create table public.checkpoint_writes
+(
+    thread_id     text                  not null,
+    checkpoint_ns text default ''::text not null,
+    checkpoint_id text                  not null,
+    task_id       text                  not null,
+    idx           integer               not null,
+    channel       text                  not null,
+    type          text,
+    blob          bytea                 not null,
+    task_path     text default ''::text not null,
+    primary key (thread_id, checkpoint_ns, checkpoint_id, task_id, idx)
+);
+
+alter table public.checkpoint_writes
+    owner to zuoleiroot;
+
+create index checkpoint_writes_thread_id_idx
+    on public.checkpoint_writes (thread_id);
+
+create table public.enterprise
+(
+    id         serial
+        primary key,
+    name       varchar(255)                                       not null,
+    code       varchar(64)
+        unique,
+    created_at timestamp with time zone default CURRENT_TIMESTAMP not null,
+    updated_at timestamp with time zone default CURRENT_TIMESTAMP not null
+);
+
+comment on table public.enterprise is '企业（单租户部署通常仅一条记录）';
+
+alter table public.enterprise
+    owner to zuoleiroot;
+
+create table public.department
+(
+    id            serial
+        primary key,
+    enterprise_id integer                                            not null
+        references public.enterprise
+            on delete cascade,
+    name          varchar(255)                                       not null,
+    parent_id     integer
+                                                                     references public.department
+                                                                         on delete set null,
+    created_at    timestamp with time zone default CURRENT_TIMESTAMP not null,
+    updated_at    timestamp with time zone default CURRENT_TIMESTAMP not null,
+    constraint uq_department_enterprise_name
+        unique (enterprise_id, name)
+);
+
+comment on table public.department is '部门';
+
+alter table public.department
+    owner to zuoleiroot;
+
+create table public.user_list
+(
+    id                      serial
+        primary key,
+    username                varchar(50)                                                    not null
+        unique,
+    email                   varchar(255)                                                   not null
+        constraint unique_email
+            unique,
+    phone                   varchar(255)                                                   not null
+        unique,
+    github_id               varchar(100)
+        constraint unique_github_id
+            unique,
+    github_username         varchar(100),
+    github_avatar_url       text,
+    github_access_token     text,
+    github_token_expires_at timestamp with time zone,
+    display_name            varchar(100),
+    avatar_url              text,
+    bio                     text,
+    is_active               boolean                  default true,
+    email_verified          boolean                  default false,
+    created_at              timestamp with time zone default CURRENT_TIMESTAMP,
+    updated_at              timestamp with time zone default CURRENT_TIMESTAMP,
+    last_login_at           timestamp with time zone,
+    hashed_password         varchar(255),
+    is_search               boolean                  default false,
+    is_reasoner             boolean                  default false,
+    enterprise_id           integer                  default 1                             not null
+        references public.enterprise,
+    department_id           integer
+                                                                                           references public.department
+                                                                                               on delete set null,
+    role                    varchar(32)              default 'employee'::character varying not null,
+    is_first_login          boolean                  default true                          not null
+);
+
+comment on column public.user_list.role is 'admin | leader | employee';
+
+comment on column public.user_list.is_first_login is '首次登录可强制改密（可选业务）';
+
+alter table public.user_list
+    owner to zuoleiroot;
+
+create index idx_user_list_github_id
+    on public.user_list (github_id);
+
+create index idx_user_list_email
+    on public.user_list (email);
+
+create index idx_user_list_username
+    on public.user_list (username);
+
+create index idx_user_list_created_at
+    on public.user_list (created_at);
+
+create index idx_user_list_enterprise_id
+    on public.user_list (enterprise_id);
+
+create index idx_user_list_department_id
+    on public.user_list (department_id);
+
+create index idx_user_list_role
+    on public.user_list (role);
+
+create table public.knowledge_base
+(
+    id            serial
+        primary key,
+    user_id       integer                                                       not null,
+    name          varchar(255)                                                  not null,
+    description   text,
+    created_at    timestamp with time zone default CURRENT_TIMESTAMP,
+    updated_at    timestamp with time zone default CURRENT_TIMESTAMP,
+    is_deleted    boolean                  default false,
+    deleted_at    timestamp with time zone,
+    enterprise_id integer                  default 1                            not null
+        references public.enterprise,
+    department_id integer
+                                                                                references public.department
+                                                                                    on delete set null,
+    creator_id    integer                                                       not null
+        references public.user_list
+            on delete set null,
+    visibility    varchar(32)              default 'private'::character varying not null
+        constraint ck_knowledge_base_visibility
+            check ((visibility)::text = ANY
+                   ((ARRAY ['private'::character varying, 'department'::character varying, 'enterprise'::character varying])::text[]))
+);
+
+comment on column public.knowledge_base.creator_id is '创建者（与 user_id 通常一致，用于权限判断）';
+
+comment on column public.knowledge_base.visibility is 'private | department | enterprise';
+
+alter table public.knowledge_base
+    owner to zuoleiroot;
+
+create index idx_knowledge_base_user_id
+    on public.knowledge_base (user_id);
+
+create index idx_knowledge_base_user_name
+    on public.knowledge_base (user_id, name);
+
+create index idx_knowledge_base_created_at
+    on public.knowledge_base (created_at);
+
+create index idx_knowledge_base_is_deleted
+    on public.knowledge_base (is_deleted);
+
+create index idx_knowledge_base_user_deleted
+    on public.knowledge_base (user_id, is_deleted);
+
+create unique index uk_user_knowledge_base_name_active
+    on public.knowledge_base (user_id, name)
+    where (is_deleted = false);
+
+create index idx_knowledge_base_enterprise
+    on public.knowledge_base (enterprise_id);
+
+create index idx_knowledge_base_creator
+    on public.knowledge_base (creator_id);
+
+create index idx_knowledge_base_ent_vis
+    on public.knowledge_base (enterprise_id, visibility)
+    where (is_deleted = false);
+
+create table public.knowledge_base_file
+(
+    id                serial
+        primary key,
+    knowledge_base_id integer                                                          not null
+        constraint fk_knowledge_base
+            references public.knowledge_base
+            on delete cascade,
+    user_id           integer                                                          not null,
+    file_name         varchar(255)                                                     not null,
+    file_path         varchar(500)                                                     not null,
+    file_size         bigint                                                           not null,
+    file_type         varchar(50)              default 'pdf'::character varying        not null,
+    status            varchar(20)              default 'processing'::character varying not null,
+    chunk_count       integer                  default 0,
+    created_at        timestamp with time zone default CURRENT_TIMESTAMP,
+    updated_at        timestamp with time zone default CURRENT_TIMESTAMP,
+    is_deleted        boolean                  default false,
+    deleted_at        timestamp with time zone
+);
+
+alter table public.knowledge_base_file
+    owner to zuoleiroot;
+
+create index idx_kb_file_kb_id
+    on public.knowledge_base_file (knowledge_base_id);
+
+create index idx_kb_file_user_id
+    on public.knowledge_base_file (user_id);
+
+create index idx_kb_file_status
+    on public.knowledge_base_file (status);
+
+create index idx_kb_file_created_at
+    on public.knowledge_base_file (created_at);
+
+create unique index idx_kb_file_unique_active
+    on public.knowledge_base_file (knowledge_base_id, file_name)
+    where (is_deleted = false);
+
+create table public.knowledge_base_chunk
+(
+    id                serial
+        primary key,
+    file_id           integer not null
+        constraint fk_kb_file
+            references public.knowledge_base_file
+            on delete cascade,
+    knowledge_base_id integer not null
+        constraint fk_kb
+            references public.knowledge_base
+            on delete cascade,
+    chunk_index       integer not null,
+    content           text    not null,
+    metadata          jsonb,
+    vector_id         varchar(255),
+    created_at        timestamp with time zone default CURRENT_TIMESTAMP,
+    summary           text
+);
+
+alter table public.knowledge_base_chunk
+    owner to zuoleiroot;
+
+create index idx_kb_chunk_file_id
+    on public.knowledge_base_chunk (file_id);
+
+create index idx_kb_chunk_kb_id
+    on public.knowledge_base_chunk (knowledge_base_id);
+
+create index idx_kb_chunk_vector_id
+    on public.knowledge_base_chunk (vector_id);
+
+create index idx_kb_chunk_metadata
+    on public.knowledge_base_chunk using gin (metadata);
+
+create table public.chat_thread_file
+(
+    id          serial
+        primary key,
+    thread_id   varchar(255) not null,
+    user_id     integer      not null
+        constraint fk_chat_thread_file_user
+            references public.user_list
+            on delete cascade,
+    file_name   varchar(255) not null,
+    file_path   varchar(500) not null,
+    file_size   integer                  default 0,
+    file_type   varchar(50)              default 'pdf'::character varying,
+    status      varchar(20)              default 'processing'::character varying,
+    chunk_count integer                  default 0,
+    created_at  timestamp with time zone default CURRENT_TIMESTAMP,
+    updated_at  timestamp with time zone default CURRENT_TIMESTAMP,
+    is_deleted  boolean                  default false,
+    deleted_at  timestamp with time zone
+);
+
+alter table public.chat_thread_file
+    owner to zuoleiroot;
+
+create index idx_chat_thread_file_thread_id
+    on public.chat_thread_file (thread_id);
+
+create index idx_chat_thread_file_user_id
+    on public.chat_thread_file (user_id);
+
+create index idx_chat_thread_file_thread_user
+    on public.chat_thread_file (thread_id, user_id);
+
+create index idx_chat_thread_file_status
+    on public.chat_thread_file (status);
+
+create index idx_chat_thread_file_is_deleted
+    on public.chat_thread_file (is_deleted);
+
+create index idx_chat_thread_file_created_at
+    on public.chat_thread_file (created_at);
+
+create index idx_chat_thread_file_thread_deleted
+    on public.chat_thread_file (thread_id, is_deleted);
+
+create unique index uk_chat_thread_file_thread_name_active
+    on public.chat_thread_file (thread_id, file_name)
+    where (is_deleted = false);
+
+create table public.chat_thread_chunk
+(
+    id          serial
+        primary key,
+    file_id     integer      not null
+        constraint fk_chat_thread_chunk_file
+            references public.chat_thread_file
+            on delete cascade,
+    thread_id   varchar(255) not null,
+    chunk_index integer      not null,
+    content     text         not null,
+    metadata    jsonb,
+    vector_id   varchar(255),
+    created_at  timestamp with time zone default CURRENT_TIMESTAMP,
+    summary     text
+);
+
+alter table public.chat_thread_chunk
+    owner to zuoleiroot;
+
+create index idx_chat_thread_chunk_file_id
+    on public.chat_thread_chunk (file_id);
+
+create index idx_chat_thread_chunk_thread_id
+    on public.chat_thread_chunk (thread_id);
+
+create index idx_chat_thread_chunk_file_thread
+    on public.chat_thread_chunk (file_id, thread_id);
+
+create index idx_chat_thread_chunk_vector_id
+    on public.chat_thread_chunk (vector_id);
+
+create index idx_chat_thread_chunk_created_at
+    on public.chat_thread_chunk (created_at);
+
+create table public.chat_message_file
+(
+    id            serial
+        primary key,
+    thread_id     varchar(255) not null,
+    checkpoint_id varchar(255) not null,
+    message_index integer      not null,
+    file_id       integer      not null
+        constraint fk_chat_message_file_file
+            references public.chat_thread_file
+            on delete cascade,
+    created_at    timestamp with time zone default CURRENT_TIMESTAMP,
+    constraint uk_message_file
+        unique (checkpoint_id, message_index, file_id)
+);
+
+alter table public.chat_message_file
+    owner to zuoleiroot;
+
+create index idx_chat_message_file_thread_id
+    on public.chat_message_file (thread_id);
+
+create index idx_chat_message_file_checkpoint
+    on public.chat_message_file (checkpoint_id, message_index);
+
+create index idx_chat_message_file_file_id
+    on public.chat_message_file (file_id);
+
+create index idx_chat_message_file_thread_checkpoint
+    on public.chat_message_file (thread_id, checkpoint_id);
+
+create table public.graphs
+(
+    id              serial
+        primary key,
+    user_id         integer                                                         not null
+        constraint fk_graphs_user
+            references public.user_list
+            on delete cascade,
+    name            varchar(255)                                                    not null,
+    description     text,
+    csv_file_name   varchar(255),
+    node_count      integer                  default 0,
+    edge_count      integer                  default 0,
+    neo4j_graph_id  varchar(100)                                                    not null
+        unique,
+    graph_type      varchar(20)              default 'knowledge'::character varying not null,
+    build_status    varchar(20),
+    build_error     text,
+    rag_chunk_count integer                  default 0                              not null,
+    created_at      timestamp with time zone default CURRENT_TIMESTAMP,
+    updated_at      timestamp with time zone default CURRENT_TIMESTAMP,
+    enterprise_id   integer                                                         not null
+        references public.enterprise,
+    department_id   integer
+                                                                                    references public.department
+                                                                                        on delete set null,
+    creator_id      integer                                                         not null
+        references public.user_list
+            on delete set null,
+    visibility      varchar(32)              default 'private'::character varying   not null
+        constraint ck_graphs_visibility
+            check ((visibility)::text = ANY
+                   ((ARRAY ['private'::character varying, 'department'::character varying, 'enterprise'::character varying])::text[]))
+);
+
+comment on table public.graphs is '知识图谱元数据表，图数据在 Neo4j；向量块数量见 rag_chunk_count';
+
+comment on column public.graphs.neo4j_graph_id is 'Neo4j 中图谱唯一标识';
+
+comment on column public.graphs.graph_type is '兼容字段，默认 knowledge';
+
+comment on column public.graphs.build_status is '构建状态：pending/processing/completed/failed';
+
+comment on column public.graphs.build_error is '构建失败时的错误信息';
+
+comment on column public.graphs.rag_chunk_count is 'Chroma 中知识图谱 RAG 分块数量';
+
+comment on column public.graphs.creator_id is '创建者（与 user_id 通常一致，用于权限判断）';
+
+comment on column public.graphs.visibility is 'private | department | enterprise';
+
+alter table public.graphs
+    owner to zuoleiroot;
+
+create index idx_graphs_user_id
+    on public.graphs (user_id);
+
+create index idx_graphs_created_at
+    on public.graphs (created_at desc);
+
+create index idx_graphs_neo4j_id
+    on public.graphs (neo4j_graph_id);
+
+create index idx_graphs_graph_type
+    on public.graphs (user_id, graph_type);
+
+create index idx_graphs_enterprise
+    on public.graphs (enterprise_id);
+
+create index idx_graphs_creator
+    on public.graphs (creator_id);
+
+create index idx_graphs_ent_vis
+    on public.graphs (enterprise_id, visibility);
+
+create table public.chat_threads
+(
+    id                 serial
+        primary key,
+    thread_id          varchar(255) not null
+        constraint uk_thread_id
+            unique,
+    user_id            integer      not null
+        constraint fk_user_id
+            references public.user_list
+            on delete cascade,
+    title              varchar(50)  not null,
+    first_query        text         not null,
+    created_at         timestamp with time zone default CURRENT_TIMESTAMP,
+    updated_at         timestamp with time zone default CURRENT_TIMESTAMP,
+    message_count      integer                  default 1,
+    is_deleted         boolean                  default false,
+    knowledge_base_id  integer,
+    novel_graph_id     integer,
+    knowledge_graph_id integer
+        constraint fk_chat_threads_knowledge_graph
+            references public.graphs
+            on delete set null,
+    ip                 varchar(128)
+);
+
+comment on table public.chat_threads is '聊天会话记录表，记录每个用户的会话基本信息';
+
+comment on column public.chat_threads.id is '主键 ID';
+
+comment on column public.chat_threads.thread_id is '会话线程 ID（UUID 格式）';
+
+comment on column public.chat_threads.user_id is '用户 ID，关联 user_list 表';
+
+comment on column public.chat_threads.title is '会话标题（首次请求内容的前10个字）';
+
+comment on column public.chat_threads.first_query is '首次请求的完整内容';
+
+comment on column public.chat_threads.created_at is '会话创建时间';
+
+comment on column public.chat_threads.updated_at is '最后更新时间';
+
+comment on column public.chat_threads.message_count is '该会话的消息总数';
+
+comment on column public.chat_threads.is_deleted is '是否已删除（软删除标记）';
+
+comment on column public.chat_threads.knowledge_graph_id is '绑定的知识图谱 graphs.id，与 knowledge_base_id 二选一';
+
+comment on column public.chat_threads.ip is '最近一次发起聊天时的客户端 IP（可选）';
+
+alter table public.chat_threads
+    owner to zuoleiroot;
+
+create index idx_chat_threads_user_id
+    on public.chat_threads (user_id);
+
+create index idx_chat_threads_created_at
+    on public.chat_threads (created_at desc);
+
+create index idx_chat_threads_user_created
+    on public.chat_threads (user_id asc, created_at desc);
+
+create index idx_chat_threads_novel_graph_id
+    on public.chat_threads (novel_graph_id);
+
+create index idx_chat_threads_knowledge_graph_id
+    on public.chat_threads (knowledge_graph_id);
+
+create table public.knowledge_processing_task
+(
+    id                serial
+        primary key,
+    user_id           integer      not null
+        constraint fk_kb_processing_user
+            references public.user_list
+            on delete cascade,
+    knowledge_base_id integer      not null
+        constraint fk_kb_processing_kb
+            references public.knowledge_base
+            on delete cascade,
+    task_name         varchar(255) not null,
+    instruction       text         not null,
+    file_ids          integer[]    not null,
+    task_type         varchar(50)  not null,
+    status            varchar(20)              default 'pending'::character varying,
+    result            text,
+    result_file_url   text,
+    error_message     text,
+    created_at        timestamp with time zone default CURRENT_TIMESTAMP,
+    updated_at        timestamp with time zone default CURRENT_TIMESTAMP,
+    started_at        timestamp with time zone,
+    completed_at      timestamp with time zone
+);
+
+comment on table public.knowledge_processing_task is '知识加工任务表：合并、对比、总结等异步任务';
+
+comment on column public.knowledge_processing_task.result_file_url is '加工结果文件的 OSS 下载链接';
+
+alter table public.knowledge_processing_task
+    owner to zuoleiroot;
+
+create index idx_kb_processing_user_id
+    on public.knowledge_processing_task (user_id);
+
+create index idx_kb_processing_kb_id
+    on public.knowledge_processing_task (knowledge_base_id);
+
+create index idx_kb_processing_status
+    on public.knowledge_processing_task (status);
+
+create index idx_kb_processing_created_at
+    on public.knowledge_processing_task (created_at desc);
+
+create index idx_kb_processing_user_status
+    on public.knowledge_processing_task (user_id, status);
+
+create index idx_department_enterprise_id
+    on public.department (enterprise_id);
+
diff --git a/update-ddl.txt b/update-ddl.txt
new file mode 100644
index 0000000..b9d08c6
--- /dev/null
+++ b/update-ddl.txt
@@ -0,0 +1,73 @@
+-- ================================================================
+-- 权限方案 A 升级 DDL（在已有表结构基础上执行）
+-- 执行顺序：按文件从上到下顺序执行
+-- ================================================================
+
+-- ------------------------------------------------------------
+-- 1. department：新增部门负责人字段
+-- ------------------------------------------------------------
+ALTER TABLE public.department
+    ADD COLUMN IF NOT EXISTS leader_user_id INTEGER
+        REFERENCES public.user_list(id) ON DELETE SET NULL;
+
+COMMENT ON COLUMN public.department.leader_user_id IS '部门负责人 user_id，对应 role=leader 的用户';
+
+CREATE INDEX IF NOT EXISTS idx_department_leader_user_id
+    ON public.department (leader_user_id);
+
+-- ------------------------------------------------------------
+-- 2. user_list：新增「是否允许上传文件到知识库」开关
+-- ------------------------------------------------------------
+ALTER TABLE public.user_list
+    ADD COLUMN IF NOT EXISTS allow_kb_upload BOOLEAN NOT NULL DEFAULT TRUE;
+
+COMMENT ON COLUMN public.user_list.allow_kb_upload IS '是否允许上传文件到知识库（上级领导或 admin 可关闭）';
+
+-- ------------------------------------------------------------
+-- 3. kb_audit_log：知识库操作审计日志表（新建）
+-- ------------------------------------------------------------
+CREATE TABLE IF NOT EXISTS public.kb_audit_log
+(
+    id             SERIAL PRIMARY KEY,
+    enterprise_id  INTEGER      NOT NULL
+        REFERENCES public.enterprise ON DELETE CASCADE,
+    actor_id       INTEGER      NOT NULL
+        REFERENCES public.user_list (id) ON DELETE CASCADE,
+    target_user_id INTEGER
+        REFERENCES public.user_list (id) ON DELETE SET NULL,
+    department_id  INTEGER
+        REFERENCES public.department (id) ON DELETE SET NULL,
+    kb_id          INTEGER
+        REFERENCES public.knowledge_base (id) ON DELETE SET NULL,
+    file_id        INTEGER
+        REFERENCES public.knowledge_base_file (id) ON DELETE SET NULL,
+    action         VARCHAR(50)  NOT NULL,
+    -- upload | download | delete | archive | create_kb | delete_kb | permission_change
+    ip             VARCHAR(128),
+    user_agent     TEXT,
+    metadata       JSONB,
+    created_at     TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP NOT NULL
+);
+
+COMMENT ON TABLE public.kb_audit_log IS '知识库操作审计日志';
+COMMENT ON COLUMN public.kb_audit_log.action IS
+    'upload | download | delete | archive | create_kb | delete_kb | permission_change';
+
+CREATE INDEX IF NOT EXISTS idx_kb_audit_log_enterprise_id
+    ON public.kb_audit_log (enterprise_id);
+CREATE INDEX IF NOT EXISTS idx_kb_audit_log_actor_id
+    ON public.kb_audit_log (actor_id);
+CREATE INDEX IF NOT EXISTS idx_kb_audit_log_target_user_id
+    ON public.kb_audit_log (target_user_id);
+CREATE INDEX IF NOT EXISTS idx_kb_audit_log_department_id
+    ON public.kb_audit_log (department_id);
+CREATE INDEX IF NOT EXISTS idx_kb_audit_log_kb_id
+    ON public.kb_audit_log (kb_id);
+CREATE INDEX IF NOT EXISTS idx_kb_audit_log_action
+    ON public.kb_audit_log (action);
+CREATE INDEX IF NOT EXISTS idx_kb_audit_log_created_at
+    ON public.kb_audit_log (created_at DESC);
+CREATE INDEX IF NOT EXISTS idx_kb_audit_log_ent_dept_created
+    ON public.kb_audit_log (enterprise_id, department_id, created_at DESC);
+
+ALTER TABLE public.kb_audit_log OWNER TO zuoleiroot;
diff --git a/权限.html b/权限.html
new file mode 100644
index 0000000..c9c9b3f
--- /dev/null
+++ b/权限.html
@@ -0,0 +1,277 @@
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+<meta charset="UTF-8" />
+<meta name="viewport" content="width=device-width, initial-scale=1.0" />
+<title>知识库权限说明</title>
+<style>
+  :root {
+    --bg: #f6f8fa;
+    --card: #ffffff;
+    --border: #e1e4e8;
+    --hdr: #24292f;
+    --text: #333;
+    --muted: #6e7781;
+    --blue: #0969da;
+    --green: #1a7f37;
+    --orange: #bc4c00;
+    --red: #cf222e;
+    --purple: #8250df;
+    --tag-bg: #ddf4ff;
+    --tag-text: #0969da;
+  }
+  * { box-sizing: border-box; margin: 0; padding: 0; }
+  body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
+         background: var(--bg); color: var(--text); padding: 32px 24px; line-height: 1.6; }
+  h1 { font-size: 22px; color: var(--hdr); margin-bottom: 6px; }
+  .subtitle { color: var(--muted); font-size: 13px; margin-bottom: 32px; }
+  .grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 20px; }
+  .card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 20px; }
+  .card h2 { font-size: 14px; font-weight: 600; color: var(--hdr); margin-bottom: 14px;
+             display: flex; align-items: center; gap: 6px; }
+  .card h2 .icon { width: 20px; height: 20px; border-radius: 5px; display: inline-flex;
+                   align-items: center; justify-content: center; font-size: 12px; }
+  .icon-kb   { background: #ddf4ff; color: var(--blue); }
+  .icon-file { background: #dafbe1; color: var(--green); }
+  .icon-role { background: #fff8c5; color: #9a6700; }
+  .icon-dept { background: #ffefe7; color: var(--orange); }
+  .icon-perm { background: #fbefff; color: var(--purple); }
+  .icon-audit{ background: #ffe4e4; color: var(--red); }
+  table { width: 100%; border-collapse: collapse; font-size: 13px; }
+  th { background: var(--bg); color: var(--muted); font-weight: 600;
+       text-align: left; padding: 6px 10px; border-bottom: 1px solid var(--border); }
+  td { padding: 7px 10px; border-bottom: 1px solid #f0f0f0; vertical-align: top; }
+  tr:last-child td { border-bottom: none; }
+  .badge { display: inline-block; padding: 1px 7px; border-radius: 20px; font-size: 11px; font-weight: 500; }
+  .b-blue   { background: #ddf4ff; color: var(--blue); }
+  .b-green  { background: #dafbe1; color: var(--green); }
+  .b-orange { background: #ffefe7; color: var(--orange); }
+  .b-red    { background: #ffe4e4; color: var(--red); }
+  .b-purple { background: #fbefff; color: var(--purple); }
+  .b-gray   { background: #f0f0f0; color: #555; }
+  .b-yellow { background: #fff8c5; color: #9a6700; }
+  .check { color: var(--green); font-weight: 700; }
+  .cross { color: var(--red); }
+  .note { font-size: 12px; color: var(--muted); margin-top: 10px; padding-top: 8px;
+          border-top: 1px dashed var(--border); }
+  .full { grid-column: 1 / -1; }
+  /* 矩阵表 */
+  .matrix th:not(:first-child), .matrix td:not(:first-child) { text-align: center; }
+</style>
+</head>
+<body>
+
+<h1>🔐 知识库权限说明</h1>
+<p class="subtitle">方案 A — 基于角色 + 部门层级 + 可见性的多维权限体系</p>
+
+<div class="grid">
+
+  <!-- 1. 角色定义 -->
+  <div class="card">
+    <h2><span class="icon icon-role">👤</span> 角色定义</h2>
+    <table>
+      <tr><th>角色</th><th>标识</th><th>说明</th></tr>
+      <tr><td>超级管理员</td><td><span class="badge b-red">admin</span></td><td>企业内全部权限，不受部门限制</td></tr>
+      <tr><td>部门领导</td><td><span class="badge b-blue">leader</span></td><td>管辖本部门及所有子孙部门</td></tr>
+      <tr><td>普通员工</td><td><span class="badge b-gray">employee</span></td><td>仅操作自己的资源</td></tr>
+    </table>
+  </div>
+
+  <!-- 2. 部门管辖范围 -->
+  <div class="card">
+    <h2><span class="icon icon-dept">🏢</span> 部门管辖范围</h2>
+    <table>
+      <tr><th>角色</th><th>可管辖的部门</th></tr>
+      <tr><td><span class="badge b-red">admin</span></td><td>企业所有部门</td></tr>
+      <tr>
+        <td><span class="badge b-blue">leader</span></td>
+        <td>
+          所在部门 + 全部子孙部门<br/>
+          <span style="color:var(--muted);font-size:12px">（递归 CTE 计算）</span>
+        </td>
+      </tr>
+      <tr><td><span class="badge b-gray">employee</span></td><td>无管辖，仅属于一个部门</td></tr>
+    </table>
+    <p class="note">示例：技术部领导 → 管辖 技术部、前端组、后端组（全子树）</p>
+  </div>
+
+  <!-- 3. 知识库可见性 -->
+  <div class="card">
+    <h2><span class="icon icon-kb">📚</span> 知识库可见性</h2>
+    <table>
+      <tr><th>visibility</th><th>可见范围</th></tr>
+      <tr><td><span class="badge b-gray">private</span></td><td>仅创建者本人</td></tr>
+      <tr><td><span class="badge b-blue">department</span></td><td>同部门所有成员 + admin</td></tr>
+      <tr><td><span class="badge b-green">enterprise</span></td><td>企业全员 + admin</td></tr>
+    </table>
+    <p class="note">leader 额外规则：本部门内任何可见性的知识库均可查看</p>
+  </div>
+
+  <!-- 4. 知识库操作权限矩阵 -->
+  <div class="card full">
+    <h2><span class="icon icon-kb">📋</span> 知识库操作权限矩阵</h2>
+    <table class="matrix">
+      <tr>
+        <th>操作</th>
+        <th>admin</th>
+        <th>leader（本部门KB）</th>
+        <th>leader（子部门KB）</th>
+        <th>employee（自己创建）</th>
+        <th>employee（他人department/enterprise KB）</th>
+      </tr>
+      <tr>
+        <td>查看知识库</td>
+        <td><span class="check">✓</span></td>
+        <td><span class="check">✓</span></td>
+        <td><span class="check">✓</span> 若可见性匹配</td>
+        <td><span class="check">✓</span></td>
+        <td><span class="check">✓</span></td>
+      </tr>
+      <tr>
+        <td>编辑/删除知识库</td>
+        <td><span class="check">✓</span></td>
+        <td>仅自己创建的</td>
+        <td>仅自己创建的</td>
+        <td><span class="check">✓</span></td>
+        <td><span class="cross">✗</span></td>
+      </tr>
+      <tr>
+        <td>上传文件</td>
+        <td>需 allow_kb_upload=true</td>
+        <td>需 allow_kb_upload=true</td>
+        <td>—</td>
+        <td>需 allow_kb_upload=true</td>
+        <td>需 allow_kb_upload=true</td>
+      </tr>
+      <tr>
+        <td>查看文件列表</td>
+        <td><span class="check">✓ 全部文件</span></td>
+        <td><span class="check">✓ 全部文件</span></td>
+        <td>—</td>
+        <td><span class="check">✓ 全部文件</span></td>
+        <td><span class="check">✓ 全部文件</span></td>
+      </tr>
+    </table>
+  </div>
+
+  <!-- 5. 文件删除权限 -->
+  <div class="card">
+    <h2><span class="icon icon-file">🗑️</span> 文件删除权限</h2>
+    <table>
+      <tr><th>谁能删</th><th>条件</th></tr>
+      <tr><td>文件上传者本人</td><td>无条件</td></tr>
+      <tr><td><span class="badge b-red">admin</span></td><td>同企业内任意文件</td></tr>
+      <tr>
+        <td><span class="badge b-blue">leader</span></td>
+        <td>上传者在其管辖子树内（即是其下属）</td>
+      </tr>
+      <tr><td><span class="badge b-gray">employee</span></td><td>仅自己上传的文件</td></tr>
+    </table>
+  </div>
+
+  <!-- 6. 上传权限控制 -->
+  <div class="card">
+    <h2><span class="icon icon-perm">🔒</span> 上传权限控制</h2>
+    <table>
+      <tr><th>条件</th><th>能否上传</th></tr>
+      <tr><td>allow_kb_upload = true <br/>且 能查看该 KB</td><td><span class="check">✓ 允许</span></td></tr>
+      <tr><td>allow_kb_upload = false</td><td><span class="cross">✗ 禁止</span>（不论角色）</td></tr>
+      <tr><td>无权查看 KB</td><td><span class="cross">✗ 禁止</span></td></tr>
+    </table>
+    <p class="note">
+      <b>谁能修改 allow_kb_upload？</b><br/>
+      admin → 任意用户 &nbsp;｜&nbsp; leader → 自己管辖的下属
+    </p>
+  </div>
+
+  <!-- 7. 审计日志可见范围 -->
+  <div class="card">
+    <h2><span class="icon icon-audit">📝</span> 审计日志可见范围</h2>
+    <table>
+      <tr><th>角色</th><th>可查看的日志</th></tr>
+      <tr><td><span class="badge b-red">admin</span></td><td>企业全员所有操作日志</td></tr>
+      <tr>
+        <td><span class="badge b-blue">leader</span></td>
+        <td>本部门及子孙部门成员的操作日志</td>
+      </tr>
+      <tr><td><span class="badge b-gray">employee</span></td><td>无权查看审计日志</td></tr>
+    </table>
+    <p class="note">记录动作：upload / download / delete / create_kb / delete_kb / permission_change</p>
+  </div>
+
+  <!-- 8. 团队管理入口 -->
+  <div class="card">
+    <h2><span class="icon icon-role">⚙️</span> 管理功能入口</h2>
+    <table>
+      <tr><th>功能</th><th>入口</th><th>谁能用</th></tr>
+      <tr>
+        <td>设置部门负责人</td>
+        <td><span class="badge b-gray">管理后台</span></td>
+        <td><span class="badge b-red">admin</span></td>
+      </tr>
+      <tr>
+        <td>修改任意用户上传权限</td>
+        <td><span class="badge b-gray">管理后台</span></td>
+        <td><span class="badge b-red">admin</span></td>
+      </tr>
+      <tr>
+        <td>修改下属上传权限</td>
+        <td><span class="badge b-blue">前台·团队管理</span></td>
+        <td><span class="badge b-blue">leader</span></td>
+      </tr>
+      <tr>
+        <td>查看团队操作日志</td>
+        <td><span class="badge b-blue">前台·团队管理</span></td>
+        <td><span class="badge b-blue">leader</span></td>
+      </tr>
+      <tr>
+        <td>查看全企业操作日志</td>
+        <td><span class="badge b-gray">管理后台</span></td>
+        <td><span class="badge b-red">admin</span></td>
+      </tr>
+    </table>
+  </div>
+
+  <!-- 9. 越级禁止 -->
+  <div class="card full">
+    <h2><span class="icon icon-perm">🚫</span> 越级操作一律拒绝</h2>
+    <table>
+      <tr><th>场景</th><th>结果</th><th>说明</th></tr>
+      <tr>
+        <td>leader 操作非下属用户的权限</td>
+        <td><span class="cross">403 Forbidden</span></td>
+        <td>is_subordinate() 检测不在子树内</td>
+      </tr>
+      <tr>
+        <td>leader 删除非下属上传的文件</td>
+        <td><span class="cross">403 Forbidden</span></td>
+        <td>can_delete_file() 返回 False</td>
+      </tr>
+      <tr>
+        <td>employee 访问 private KB（非自己创建）</td>
+        <td><span class="cross">403 Forbidden</span></td>
+        <td>can_view_kb() 返回 False</td>
+      </tr>
+      <tr>
+        <td>allow_kb_upload=false 的用户上传文件</td>
+        <td><span class="cross">400 Bad Request</span></td>
+        <td>can_upload_to_kb() 返回 False</td>
+      </tr>
+      <tr>
+        <td>跨企业访问任何资源</td>
+        <td><span class="cross">403 Forbidden</span></td>
+        <td>enterprise_id 强制校验</td>
+      </tr>
+    </table>
+  </div>
+
+</div>
+
+<p style="margin-top:28px; font-size:12px; color:var(--muted);">
+  实现位置：<code>backend/core/permissions.py</code> &nbsp;·&nbsp;
+  路由层：<code>backend/api/kb_file_router.py</code> &nbsp;·&nbsp;
+  团队 API：<code>backend/api/team_router.py</code>
+</p>
+
+</body>
+</html>