diff --git a/.env.example b/.env.example
index df80394..f1cf9ca 100644
--- a/.env.example
+++ b/.env.example
@@ -51,6 +51,7 @@ BUILD_DIR_RETENTION_HOURS=24
 
 # 打包超时时间（小时），超时自动标记失败
 BUILD_TIMEOUT_HOURS=1
+DOWNLOAD_URL_EXPIRE_SECONDS=600
 
 # ---- Watchdog 健康监测 ----
 # 健康检查间隔（秒）
diff --git a/backend/config.py b/backend/config.py
index 5455b6d..d64850f 100644
--- a/backend/config.py
+++ b/backend/config.py
@@ -146,6 +146,8 @@ ADMIN_PASSWORD = os.getenv("ADMIN_PASSWORD", "admin123")
 JWT_SECRET = os.getenv("JWT_SECRET", "ios-build-server-secret-key-change-in-production")
 JWT_ALGORITHM = "HS256"
 JWT_EXPIRE_HOURS = 24
+# 受控 IPA 下载链接的 OSS 签名有效期（秒）。
+DOWNLOAD_URL_EXPIRE_SECONDS = int(os.getenv("DOWNLOAD_URL_EXPIRE_SECONDS", "600"))
 
 
 def validate_production_security() -> None:
diff --git a/backend/main.py b/backend/main.py
index 669bba7..e0d9ca9 100644
--- a/backend/main.py
+++ b/backend/main.py
@@ -8,7 +8,7 @@ from fastapi.staticfiles import StaticFiles
 from fastapi.responses import FileResponse
 
 from .database import init_db
-from .routers import config, apps, tasks, auth, users
+from .routers import config, apps, tasks, auth, users, operations
 from .services.log_streamer import log_streamer
 from .config import BACKEND_PORT, CORS_ALLOWED_ORIGINS, TRUSTED_HOSTS, validate_production_security
 from .deps import decode_current_user
@@ -48,6 +48,7 @@ app.include_router(users.router)
 app.include_router(config.router)
 app.include_router(apps.router)
 app.include_router(tasks.router)
+app.include_router(operations.router)
 
 
 @app.websocket("/ws/tasks/{task_id}")
diff --git a/backend/models.py b/backend/models.py
index 4ab93e2..2f54917 100644
--- a/backend/models.py
+++ b/backend/models.py
@@ -60,3 +60,22 @@ class User(Base):
     password_hash = Column(String, nullable=False)
     is_admin = Column(Boolean, default=False)
     created_at = Column(TIMESTAMP, default=datetime.utcnow)
+
+
+class OperationLog(Base):
+    """用户关键操作的审计与统计记录。"""
+    __tablename__ = "operation_logs"
+
+    id = Column(String, primary_key=True)
+    created_at = Column(TIMESTAMP, default=datetime.utcnow, nullable=False)
+    username = Column(String, nullable=False)
+    is_admin = Column(Boolean, default=False, nullable=False)
+    action = Column(String, nullable=False)
+    task_id = Column(String)
+    app_id = Column(String)
+    app_name = Column(String)
+    resource_type = Column(String)
+    resource_name = Column(String)
+    detail_json = Column(Text)
+    client_ip = Column(String)
+    user_agent = Column(String)
diff --git a/backend/routers/operations.py b/backend/routers/operations.py
new file mode 100644
index 0000000..2e25395
--- /dev/null
+++ b/backend/routers/operations.py
@@ -0,0 +1,65 @@
+"""操作日志与统计 API（仅管理员）。"""
+import csv
+import io
+import json
+from datetime import datetime, timedelta
+
+from fastapi import APIRouter, Depends, HTTPException, Query
+from fastapi.responses import StreamingResponse
+from sqlalchemy import func
+from sqlalchemy.orm import Session
+
+from ..database import get_db
+from ..deps import get_current_user
+from ..models import OperationLog
+
+router = APIRouter(prefix="/api/operations", tags=["operations"])
+
+
+def _require_admin(user: dict):
+    if not user.get("is_admin"):
+        raise HTTPException(status_code=403, detail="需要管理员权限")
+
+
+def _query_logs(db: Session, days: int, username: str = "", action: str = ""):
+    since = datetime.utcnow() - timedelta(days=max(1, min(days, 365)))
+    query = db.query(OperationLog).filter(OperationLog.created_at >= since)
+    if username:
+        query = query.filter(OperationLog.username == username)
+    if action:
+        query = query.filter(OperationLog.action == action)
+    return query
+
+
+@router.get("/summary")
+async def operation_summary(days: int = Query(30, ge=1, le=365), user: dict = Depends(get_current_user), db: Session = Depends(get_db)):
+    _require_admin(user)
+    query = _query_logs(db, days)
+    total = query.count()
+    action_counts = dict(query.with_entities(OperationLog.action, func.count()).group_by(OperationLog.action).all())
+    users = query.with_entities(OperationLog.username, func.count()).group_by(OperationLog.username).order_by(func.count().desc()).limit(10).all()
+    apps = query.filter(OperationLog.app_name.isnot(None)).with_entities(OperationLog.app_name, func.count()).group_by(OperationLog.app_name).order_by(func.count().desc()).limit(10).all()
+    return {"days": days, "total": total, "action_counts": action_counts,
+            "top_users": [{"name": name, "count": count} for name, count in users],
+            "top_apps": [{"name": name, "count": count} for name, count in apps]}
+
+
+@router.get("")
+async def list_operations(days: int = Query(30, ge=1, le=365), username: str = "", action: str = "", limit: int = Query(100, ge=1, le=500), user: dict = Depends(get_current_user), db: Session = Depends(get_db)):
+    _require_admin(user)
+    logs = _query_logs(db, days, username, action).order_by(OperationLog.created_at.desc()).limit(limit).all()
+    return [{"id": log.id, "created_at": log.created_at, "username": log.username,
+             "action": log.action, "app_name": log.app_name, "task_id": log.task_id,
+             "resource_type": log.resource_type, "resource_name": log.resource_name,
+             "detail": json.loads(log.detail_json or "{}"), "client_ip": log.client_ip} for log in logs]
+
+
+@router.get("/export")
+async def export_operations(days: int = Query(30, ge=1, le=365), user: dict = Depends(get_current_user), db: Session = Depends(get_db)):
+    _require_admin(user)
+    output = io.StringIO()
+    writer = csv.writer(output)
+    writer.writerow(["时间", "用户", "操作", "App", "资源类型", "资源名称", "IP", "详情"])
+    for log in _query_logs(db, days).order_by(OperationLog.created_at.desc()).all():
+        writer.writerow([log.created_at, log.username, log.action, log.app_name or "", log.resource_type or "", log.resource_name or "", log.client_ip or "", log.detail_json or ""])
+    return StreamingResponse(iter(["\ufeff" + output.getvalue()]), media_type="text/csv", headers={"Content-Disposition": "attachment; filename=operation-logs.csv"})
diff --git a/backend/routers/tasks.py b/backend/routers/tasks.py
index cf5ca80..a0bc3cd 100644
--- a/backend/routers/tasks.py
+++ b/backend/routers/tasks.py
@@ -6,7 +6,7 @@ import tempfile
 import uuid
 from datetime import datetime
 from typing import List
-from fastapi import APIRouter, Depends, HTTPException
+from fastapi import APIRouter, Depends, HTTPException, Request
 from fastapi.responses import FileResponse
 from starlette.background import BackgroundTask
 from sqlalchemy.orm import Session
@@ -20,7 +20,7 @@ router = APIRouter(prefix="/api/tasks", tags=["tasks"], dependencies=[Depends(ge
 
 
 @router.post("", response_model=TaskResponse)
-async def create_task(task: TaskCreate, db: Session = Depends(get_db)):
+async def create_task(task: TaskCreate, request: Request, user: dict = Depends(get_current_user), db: Session = Depends(get_db)):
     """创建打包任务"""
     from .config import load_config
 
@@ -63,6 +63,9 @@ async def create_task(task: TaskCreate, db: Session = Depends(get_db)):
         status="pending",
     )
     db.add(db_task)
+    from ..services.audit_log import record_operation
+    record_operation(db, user, "build_created", request=request, task=db_task,
+                     detail={"branch": task.branch, "build_type": task.build_type})
     db.commit()
     db.refresh(db_task)
 
@@ -122,7 +125,7 @@ async def get_task(task_id: str, db: Session = Depends(get_db)):
 
 
 @router.delete("/{task_id}")
-async def cancel_task(task_id: str, db: Session = Depends(get_db)):
+async def cancel_task(task_id: str, request: Request, user: dict = Depends(get_current_user), db: Session = Depends(get_db)):
     """取消任务"""
     task = db.query(Task).filter(Task.id == task_id).first()
     if not task:
@@ -132,6 +135,8 @@ async def cancel_task(task_id: str, db: Session = Depends(get_db)):
         raise HTTPException(status_code=400, detail="任务已完成或已取消")
 
     task.status = "cancelled"
+    from ..services.audit_log import record_operation
+    record_operation(db, user, "build_cancelled", request=request, task=task)
     db.commit()
 
     # 尝试取消运行中的任务
@@ -153,7 +158,7 @@ async def cancel_task(task_id: str, db: Session = Depends(get_db)):
 
 
 @router.delete("/{task_id}/delete")
-async def delete_task(task_id: str, db: Session = Depends(get_db)):
+async def delete_task(task_id: str, request: Request, user: dict = Depends(get_current_user), db: Session = Depends(get_db)):
     """删除打包记录"""
     import shutil
     from pathlib import Path
@@ -199,6 +204,8 @@ async def delete_task(task_id: str, db: Session = Depends(get_db)):
         if build_path.exists():
             shutil.rmtree(build_path, ignore_errors=True)
 
+    from ..services.audit_log import record_operation
+    record_operation(db, user, "task_deleted", request=request, task=task)
     db.delete(task)
     db.commit()
 
@@ -243,8 +250,35 @@ async def get_build_log(task_id: str, db: Session = Depends(get_db)):
     return {"log": ""}
 
 
+@router.get("/{task_id}/download-link")
+async def get_download_link(task_id: str, request: Request, user: dict = Depends(get_current_user), db: Session = Depends(get_db)):
+    """记录已登录用户发起 IPA 下载，并返回 OSS 公开链接。"""
+    task = db.query(Task).filter(Task.id == task_id).first()
+    if not task:
+        raise HTTPException(status_code=404, detail="任务不存在")
+    if not task.oss_url:
+        raise HTTPException(status_code=404, detail="下载文件不存在")
+    try:
+        from .config import load_config
+        from ..config import DOWNLOAD_URL_EXPIRE_SECONDS
+        from ..services.distribution import DistributionError, get_published_download_url
+        download_url = get_published_download_url(
+            json.loads(task.config_json or "{}"),
+            load_config().get("upload", {}),
+            task.oss_url,
+        )
+    except (json.JSONDecodeError, DistributionError) as exc:
+        raise HTTPException(status_code=502, detail=f"生成下载链接失败：{exc}") from exc
+    from ..services.audit_log import record_operation
+    record_operation(db, user, "ipa_download_requested", request=request, task=task,
+                     resource_type="ipa", resource_name=task.oss_url,
+                     detail={"controlled": True})
+    db.commit()
+    return {"url": download_url, "expires_in": DOWNLOAD_URL_EXPIRE_SECONDS}
+
+
 @router.get("/{task_id}/dsym")
-async def download_dsym(task_id: str, db: Session = Depends(get_db)):
+async def download_dsym(task_id: str, request: Request, user: dict = Depends(get_current_user), db: Session = Depends(get_db)):
     """下载 dSYM 文件"""
     import shutil
     import zipfile
@@ -255,6 +289,10 @@ async def download_dsym(task_id: str, db: Session = Depends(get_db)):
         raise HTTPException(status_code=404, detail="任务不存在")
     if not task.dsym_path:
         raise HTTPException(status_code=404, detail="dSYM 文件不存在")
+    from ..services.audit_log import record_operation
+    record_operation(db, user, "dsym_downloaded", request=request, task=task,
+                     resource_type="dsym", resource_name=os.path.basename(task.dsym_path))
+    db.commit()
 
     dsym_path = task.dsym_path
     if not os.path.exists(dsym_path):
@@ -275,13 +313,17 @@ async def download_dsym(task_id: str, db: Session = Depends(get_db)):
 
 
 @router.get("/{task_id}/obfuscation-maps")
-async def download_obfuscation_maps(task_id: str, db: Session = Depends(get_db)):
+async def download_obfuscation_maps(task_id: str, request: Request, user: dict = Depends(get_current_user), db: Session = Depends(get_db)):
     """下载混淆映射表"""
     task = db.query(Task).filter(Task.id == task_id).first()
     if not task:
         raise HTTPException(status_code=404, detail="任务不存在")
     if not task.obfuscation_maps_path:
         raise HTTPException(status_code=404, detail="混淆映射表不存在")
+    from ..services.audit_log import record_operation
+    record_operation(db, user, "obfuscation_maps_downloaded", request=request, task=task,
+                     resource_type="obfuscation_maps", resource_name=os.path.basename(task.obfuscation_maps_path))
+    db.commit()
 
     maps_path = task.obfuscation_maps_path
     if not os.path.exists(maps_path):
diff --git a/backend/services/audit_log.py b/backend/services/audit_log.py
new file mode 100644
index 0000000..d3edd5f
--- /dev/null
+++ b/backend/services/audit_log.py
@@ -0,0 +1,23 @@
+"""操作审计日志。"""
+import json
+import uuid
+from datetime import datetime
+
+from ..models import OperationLog
+
+
+def record_operation(db, user: dict, action: str, *, request=None, task=None,
+                     resource_type: str = "", resource_name: str = "", detail: dict | None = None):
+    """将已登录用户的关键操作写入当前数据库事务。"""
+    client_ip = request.client.host if request and request.client else ""
+    user_agent = request.headers.get("user-agent", "")[:500] if request else ""
+    db.add(OperationLog(
+        id=str(uuid.uuid4()), created_at=datetime.utcnow(), username=user.get("username", ""),
+        is_admin=bool(user.get("is_admin")), action=action,
+        task_id=task.id if task else None,
+        app_id=task.app_id if task else None,
+        app_name=task.app_name if task else None,
+        resource_type=resource_type, resource_name=resource_name,
+        detail_json=json.dumps(detail or {}, ensure_ascii=False),
+        client_ip=client_ip, user_agent=user_agent,
+    ))
diff --git a/backend/services/distribution.py b/backend/services/distribution.py
index b81a3fb..4982189 100644
--- a/backend/services/distribution.py
+++ b/backend/services/distribution.py
@@ -9,6 +9,8 @@ from urllib.parse import quote, unquote, urlparse
 
 import httpx
 
+from ..config import DOWNLOAD_URL_EXPIRE_SECONDS
+
 
 class DistributionError(Exception):
     """分发配置或上传过程失败。"""
@@ -167,6 +169,30 @@ def delete_published_artifacts(
     deleter(upload_config, remote_paths)
 
 
+def get_published_download_url(build_config: dict, upload_config: dict, published_url: str) -> str:
+    """返回用于受控下载的短时链接；WebDAV 保持原公开链接。"""
+    if upload_config.get("mode") != "oss":
+        return published_url
+
+    remote_paths = _remote_paths_from_published_url(build_config, upload_config, published_url)
+    if not remote_paths:
+        raise DistributionError("无法识别 OSS 文件路径，无法生成受控下载链接")
+    oss = upload_config.get("oss", {})
+    required = ["access_key_id", "access_key_secret", "endpoint", "bucket_name"]
+    if any(not oss.get(key) for key in required):
+        raise DistributionError("OSS 配置不完整")
+    try:
+        import oss2
+    except ImportError as exc:
+        raise DistributionError("未安装 oss2，请重新执行 ./deploy.sh build") from exc
+
+    bucket = oss2.Bucket(
+        oss2.Auth(oss["access_key_id"], oss["access_key_secret"]),
+        oss["endpoint"], oss["bucket_name"], connect_timeout=30,
+    )
+    return bucket.sign_url("GET", remote_paths[0], DOWNLOAD_URL_EXPIRE_SECONDS, slash_safe=True)
+
+
 def _ensure_webdav_dirs(client: httpx.Client, server_url: str, remote_path: str):
     path = ""
     for segment in remote_path.strip("/").split("/")[:-1]:
diff --git a/frontend/src/App.vue b/frontend/src/App.vue
index 27441dc..753ba2c 100644
--- a/frontend/src/App.vue
+++ b/frontend/src/App.vue
@@ -7,6 +7,7 @@
           <router-link to="/build">打包</router-link>
           <router-link to="/history">历史</router-link>
           <router-link to="/admin">管理</router-link>
+          <router-link v-if="isAdmin" to="/operations">操作日志</router-link>
         </nav>
         <div v-if="!isLoggedIn" class="user-info">
           <button class="btn-login" @click="showLogin = true">登录</button>
diff --git a/frontend/src/__tests__/OperationLogView.test.js b/frontend/src/__tests__/OperationLogView.test.js
new file mode 100644
index 0000000..11a811c
--- /dev/null
+++ b/frontend/src/__tests__/OperationLogView.test.js
@@ -0,0 +1,30 @@
+import { describe, it, expect, vi, beforeEach } from 'vitest'
+import { mount, flushPromises } from '@vue/test-utils'
+import { ref } from 'vue'
+import OperationLogView from '../views/OperationLogView.vue'
+
+global.fetch = vi.fn()
+
+describe('OperationLogView.vue', () => {
+  beforeEach(() => {
+    vi.clearAllMocks()
+    fetch
+      .mockResolvedValueOnce({ ok: true, json: () => Promise.resolve({ total: 4, action_counts: { build_created: 2, ipa_download_requested: 1 }, top_users: [{ name: 'admin', count: 4 }], top_apps: [{ name: '测试App', count: 3 }] }) })
+      .mockResolvedValueOnce({ ok: true, json: () => Promise.resolve([{ id: '1', created_at: '2026-07-22T08:00:00', username: 'admin', action: 'build_created', app_name: '测试App', resource_type: '', client_ip: '127.0.0.1' }]) })
+  })
+
+  it('管理员可查看统计和操作明细', async () => {
+    const wrapper = mount(OperationLogView, { global: { provide: { isAdmin: ref(true), getToken: () => 'token' } } })
+    await flushPromises()
+    expect(wrapper.text()).toContain('操作日志')
+    expect(wrapper.text()).toContain('操作总数')
+    expect(wrapper.text()).toContain('发起打包')
+    expect(wrapper.text()).toContain('测试App')
+  })
+
+  it('普通用户不渲染操作日志页面', async () => {
+    const wrapper = mount(OperationLogView, { global: { provide: { isAdmin: ref(false) } } })
+    await flushPromises()
+    expect(wrapper.find('.panel').exists()).toBe(false)
+  })
+})
diff --git a/frontend/src/router/index.js b/frontend/src/router/index.js
index 4292b81..b5e5347 100644
--- a/frontend/src/router/index.js
+++ b/frontend/src/router/index.js
@@ -2,12 +2,14 @@ import { createRouter, createWebHistory } from 'vue-router'
 import BuildView from '../views/BuildView.vue'
 import HistoryView from '../views/HistoryView.vue'
 import ConfigView from '../views/ConfigView.vue'
+import OperationLogView from '../views/OperationLogView.vue'
 
 const routes = [
   { path: '/', redirect: '/build' },
   { path: '/build', name: 'Build', component: BuildView },
   { path: '/history', name: 'History', component: HistoryView },
   { path: '/admin', name: 'Admin', component: ConfigView },
+  { path: '/operations', name: 'Operations', component: OperationLogView },
 ]
 
 const router = createRouter({
diff --git a/frontend/src/views/HistoryView.vue b/frontend/src/views/HistoryView.vue
index 45be151..988158a 100644
--- a/frontend/src/views/HistoryView.vue
+++ b/frontend/src/views/HistoryView.vue
@@ -55,7 +55,7 @@
                 <img v-if="task.build_type === 'Ad_Hoc' && task.qr_code_path"
                      :src="task.qr_code_path" alt="QR" class="qr-thumb"
                      @click="showQrPreview(task)">
-                <a v-if="task.build_type === 'App_Store'" :href="task.oss_url" target="_blank" class="download-link">下载 IPA</a>
+                <button v-if="task.build_type === 'App_Store'" class="download-link" @click="downloadIpa(task.id)">下载 IPA</button>
               </template>
               <span v-else class="text-muted">-</span>
             </td>
@@ -308,6 +308,17 @@ const downloadDsym = (taskId) => {
   window.open(`/api/tasks/${taskId}/dsym`)
 }
 
+const downloadIpa = async (taskId) => {
+  try {
+    const res = await authFetch(`/api/tasks/${taskId}/download-link`)
+    if (!res.ok) throw new Error()
+    const { url } = await res.json()
+    window.open(url, '_blank')
+  } catch {
+    alert('下载失败，请稍后重试')
+  }
+}
+
 const downloadObfMaps = (taskId) => {
   window.open(`/api/tasks/${taskId}/obfuscation-maps`)
 }
@@ -506,7 +517,7 @@ const errorCategoryLabel = (cat) => {
   transition: all 0.2s;
 }
 .btn-close-log:hover { border-color: #1890ff; color: #1890ff; }
-.download-link { color: #1890ff; text-decoration: none; font-size: 13px; }
+.download-link { color: #1890ff; text-decoration: none; font-size: 13px; border: none; background: none; cursor: pointer; padding: 0; }
 .download-link:hover { text-decoration: underline; }
 .text-muted { color: #999; font-size: 13px; }
 .qr-thumb { width: 40px; height: 40px; cursor: pointer; border-radius: 4px; border: 1px solid #e8e8e8; }
diff --git a/frontend/src/views/OperationLogView.vue b/frontend/src/views/OperationLogView.vue
new file mode 100644
index 0000000..66d24b4
--- /dev/null
+++ b/frontend/src/views/OperationLogView.vue
@@ -0,0 +1,24 @@
+<template>
+  <div v-if="isAdmin" class="container">
+    <div class="panel">
+      <div class="header-row"><h2>操作日志</h2><div><select v-model.number="days" @change="load"><option :value="7">近 7 天</option><option :value="30">近 30 天</option><option :value="90">近 90 天</option></select><button @click="exportCsv">导出 CSV</button></div></div>
+      <div class="cards"><div><strong>{{ summary.total || 0 }}</strong><span>操作总数</span></div><div><strong>{{ summary.action_counts?.build_created || 0 }}</strong><span>发起打包</span></div><div><strong>{{ summary.action_counts?.ipa_download_requested || 0 }}</strong><span>发起 IPA 下载</span></div></div>
+      <div class="columns"><section><h3>活跃用户</h3><p v-for="item in summary.top_users || []" :key="item.name">{{ item.name }} <b>{{ item.count }}</b></p></section><section><h3>App 操作量</h3><p v-for="item in summary.top_apps || []" :key="item.name">{{ item.name }} <b>{{ item.count }}</b></p></section></div>
+      <table><thead><tr><th>时间</th><th>用户</th><th>操作</th><th>App</th><th>资源</th><th>IP</th></tr></thead><tbody><tr v-for="log in logs" :key="log.id"><td>{{ formatTime(log.created_at) }}</td><td>{{ log.username }}</td><td>{{ actionText(log.action) }}</td><td>{{ log.app_name || '-' }}</td><td>{{ log.resource_type || '-' }}</td><td>{{ log.client_ip || '-' }}</td></tr><tr v-if="!logs.length"><td colspan="6">暂无操作记录</td></tr></tbody></table>
+    </div>
+  </div>
+</template>
+<script setup>
+import { inject, ref, onMounted } from 'vue'
+const isAdmin = inject('isAdmin', ref(false)); const getToken = inject('getToken', () => '')
+const days = ref(30); const summary = ref({}); const logs = ref([])
+const authFetch = (url) => fetch(url, { headers: { Authorization: `Bearer ${getToken()}` } })
+const load = async () => { const [summaryRes, logsRes] = await Promise.all([authFetch(`/api/operations/summary?days=${days.value}`), authFetch(`/api/operations?days=${days.value}`)]); if (summaryRes.ok) summary.value = await summaryRes.json(); if (logsRes.ok) logs.value = await logsRes.json() }
+const exportCsv = async () => { const res = await authFetch(`/api/operations/export?days=${days.value}`); if (!res.ok) return; const blob = await res.blob(); const url = URL.createObjectURL(blob); const link = document.createElement('a'); link.href = url; link.download = 'operation-logs.csv'; link.click(); URL.revokeObjectURL(url) }
+const formatTime = value => value ? new Date(value.endsWith('Z') ? value : `${value}Z`).toLocaleString('zh-CN', { hour12: false }) : '-'
+const actionText = action => ({ build_created: '发起打包', build_cancelled: '取消打包', task_deleted: '删除记录', ipa_download_requested: '发起 IPA 下载', dsym_downloaded: '下载 dSYM', obfuscation_maps_downloaded: '下载混淆映射' }[action] || action)
+onMounted(load)
+</script>
+<style scoped>
+.container{max-width:1200px;margin:0 auto;padding:24px}.panel{background:#fff;border-radius:12px;padding:20px;box-shadow:0 2px 8px #00000014}.header-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.header-row h2{margin:0}.header-row select,.header-row button{padding:8px 12px;margin-left:8px;border:1px solid #d9d9d9;border-radius:6px;background:#fff}.header-row button{color:#1890ff;cursor:pointer}.cards,.columns{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:20px}.cards div,.columns section{padding:16px;border-radius:8px;background:#fafafa}.cards strong{display:block;font-size:24px;color:#1890ff}.cards span{font-size:13px;color:#666}.columns{grid-template-columns:1fr 1fr}.columns h3{margin:0 0 10px;font-size:14px}.columns p{display:flex;justify-content:space-between;margin:8px 0;color:#555}table{width:100%;border-collapse:collapse}th,td{padding:11px;border-bottom:1px solid #eee;text-align:left;font-size:13px}th{color:#666;background:#fafafa}@media(max-width:700px){.cards{grid-template-columns:1fr}.columns{grid-template-columns:1fr}.header-row{align-items:flex-start;gap:12px;flex-direction:column}}
+</style>
diff --git a/tests/test_api_operations.py b/tests/test_api_operations.py
new file mode 100644
index 0000000..ca70e12
--- /dev/null
+++ b/tests/test_api_operations.py
@@ -0,0 +1,47 @@
+"""操作审计日志接口测试。"""
+from unittest.mock import AsyncMock, patch
+
+
+@patch("backend.services.build_queue.build_queue")
+def test_build_creation_is_recorded_and_visible_to_admin(mock_queue, client, tmp_config):
+    mock_queue.submit = AsyncMock()
+    response = client.post("/api/tasks", json={"app_id": "1", "scheme_id": "1", "build_type": "Ad_Hoc"})
+    assert response.status_code == 200
+
+    summary = client.get("/api/operations/summary")
+    assert summary.status_code == 200
+    assert summary.json()["action_counts"]["build_created"] == 1
+
+    logs = client.get("/api/operations").json()
+    assert logs[0]["username"] == "admin"
+    assert logs[0]["action"] == "build_created"
+
+
+def test_download_link_is_recorded(client, tmp_config):
+    from backend.database import SessionLocal
+    from backend.models import Task
+    db = SessionLocal()
+    db.add(Task(id="download-task", app_id="1", app_name="测试App", build_type="App_Store", scheme_id="1", scheme_name="readoor31", status="completed", oss_url="https://files.example.com/app.ipa"))
+    db.commit()
+    db.close()
+
+    with patch("backend.services.distribution.get_published_download_url", return_value="https://signed.example.com/app.ipa?signature=1"):
+        response = client.get("/api/tasks/download-task/download-link")
+    assert response.status_code == 200
+    assert "signature=1" in response.json()["url"]
+    assert client.get("/api/operations").json()[0]["action"] == "ipa_download_requested"
+
+
+def test_regular_user_cannot_view_operation_logs(client):
+    from backend.database import SessionLocal
+    from backend.models import User
+    from backend.security import hash_password
+    db = SessionLocal()
+    db.add(User(id="regular-user", username="reader", password_hash=hash_password("reader-password"), is_admin=False))
+    db.commit()
+    db.close()
+
+    login = client.post("/api/auth/login", json={"username": "reader", "password": "reader-password"})
+    client.headers.update({"Authorization": f"Bearer {login.json()['token']}"})
+    assert client.get("/api/operations").status_code == 403
+    assert client.get("/api/operations/summary").status_code == 403
diff --git a/tests/test_distribution.py b/tests/test_distribution.py
index 9f3a83f..37089d3 100644
--- a/tests/test_distribution.py
+++ b/tests/test_distribution.py
@@ -9,6 +9,7 @@ from backend.services.distribution import (
     _write_download_page,
     _write_manifest,
     publish_ipa,
+    get_published_download_url,
 )
 
 
@@ -119,3 +120,22 @@ def test_delete_uses_saved_url_for_legacy_artifact_name():
         "readoor/iOS/100_2_0_0_0.html",
         "readoor/iOS/100_2_0_0_0.png",
     ]
+
+
+def test_oss_download_url_is_short_lived_and_uses_actual_object_key(monkeypatch):
+    class FakeBucket:
+        def __init__(self, *_args, **_kwargs): pass
+        def sign_url(self, method, key, expires, **kwargs):
+            assert (method, key, expires, kwargs) == ("GET", "readoor/iOS/100_2_0_0_0.ipa", 600, {"slash_safe": True})
+            return "https://signed.example.com/app.ipa?signature=1"
+    class FakeOss:
+        Auth = staticmethod(lambda *_args: object())
+        Bucket = FakeBucket
+    monkeypatch.setitem(__import__("sys").modules, "oss2", FakeOss)
+
+    url = get_published_download_url(
+        {"BUILD_TYPE": "App_Store"},
+        {"mode": "oss", "oss": {"access_key_id": "id", "access_key_secret": "secret", "endpoint": "oss.example.com", "bucket_name": "bucket", "base_url": "https://files.example.com"}},
+        "https://files.example.com/readoor/iOS/100_2_0_0_0.ipa",
+    )
+    assert "signature=1" in url