diff --git a/README.md b/README.md
index 693964b..1e5c95d 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,11 @@
 # DSH Runtime Release
 
+## runtime-7.8：修复下载按钮服务依赖
+
+下载插件升级为 dsh-preview-download@1.0.1，补齐 remote 服务声明，修复点击时在发送请求前抛出 cannot get property "remote" without inject 的问题。同步更新内置包和新 profile 引用，新增注册回调依赖回归测试。此修复不处理面板 401、Office 504 或 plugins/events HTTP/2 连接错误。
+
+已有实例升级镜像时，必须把 profile 中 dsh-preview-download 依赖的归档路径从 dsh-preview-download-1.0.0.tgz 改为 dsh-preview-download-1.0.1.tgz，保留其他配置和 bundles，重启后刷新页面；已有 profile 不自动改写。尚未完成线上浏览器下载验收。
+
 ## runtime-7.7：预览下载插件
 
 内置独立插件 dsh-preview-download@1.0.0，在文档预览工具栏提供「下载原文件」。使用正式 sidebar.right.tab.document.actions 插槽，不修改上游 UI、不扫描 DOM、不增加服务端下载接口。通过当前会话 workspaceFiles.readBytes 获取原始字节，沿用服务端权限和完整文件大小上限；支持中文文件名、下载中状态、失败提示及切换文件/卸载时取消读取。下载的是原始文件，不是 Office 转换出的 PDF。文件元数据无法读取时不会显示工具栏按钮。
@@ -7,7 +13,7 @@
 新建空 profile 默认启用。已有实例升级镜像后，在 /workspace/profiles/web/package.json 的 dependencies 中添加以下条目，并在 dsh.profile.bundles 中追加一次 dsh-preview-download，保留其他配置，然后重启：
 
 ~~~json
-"dsh-preview-download": "file:/usr/local/lib/dsh-mgr/dsh-preview-download-1.0.0.tgz"
+"dsh-preview-download": "file:/usr/local/lib/dsh-mgr/dsh-preview-download-1.0.1.tgz"
 ~~~
 
 插件源码位于 image/preview-download，也可单独打包安装。无第三方运行时依赖，React 由 DSH 浏览器提供。当前仅针对 DSH 0.2.0-rc.2 验证。25 项离线回归测试通过，已在现有 AMD64 镜像中验证插件打包、新 profile 离线安装及服务启动；完整 runtime-7.7 构建在 MiSans 下载阶段超时，尚未完成浏览器实际点击下载、移动端和 ARM64 验收。不应把单元测试中的拒绝响应模拟当作真实权限端到端验收。
@@ -70,7 +76,7 @@ Runtime 镜像包含 Debian Bookworm 的 Python 3、pip、venv（`python` 指向
 
 ## 发布清单
 
-`release.json` 是发布入口：`schema_version` 为清单格式版本，`release_id` 标识一次发布，`version` 为精确 DSH 版本，`deployment_schema` 为运行布局版本，`platforms` 为支持的平台。当前待发布配置为 `runtime-7.7`、DSH `0.2.0-rc.2`、布局 7、`linux/amd64` 和 `linux/arm64`（aarch64，不含 32 位 ARM）。
+`release.json` 是发布入口：`schema_version` 为清单格式版本，`release_id` 标识一次发布，`version` 为精确 DSH 版本，`deployment_schema` 为运行布局版本，`platforms` 为支持的平台。当前待发布配置为 `runtime-7.8`、DSH `0.2.0-rc.2`、布局 7、`linux/amd64` 和 `linux/arm64`（aarch64，不含 32 位 ARM）。
 
 ARM64 验收状态：已确认 Node/Caddy 基础镜像提供 ARM64 版本，但尚未完成 ARM64 runtime 构建及运行验收。清单声明会开放面板的对应平台构建入口，不等于兼容性证明；验收完成前不要推送发布。
 
diff --git a/image/entrypoint.sh b/image/entrypoint.sh
index 968c5f5..c21feaa 100644
--- a/image/entrypoint.sh
+++ b/image/entrypoint.sh
@@ -8,7 +8,7 @@ if [[ -f "${DSH_HOME}/profiles/web/package.json" ]]; then
     # pnpm otherwise probes registry metadata for the overlapping optional peer.
     # Restrict offline mode to profiles containing only our fixed archives.
     install_env=()
-    if node -e 'const m=require(process.env.DSH_HOME+"/profiles/web/package.json"); const pins={"dsh-preview-download":"file:/usr/local/lib/dsh-mgr/dsh-preview-download-1.0.0.tgz","dsh-chat-manager":"file:/usr/local/lib/dsh-mgr/dsh-chat-manager-1.5.12-dsh-mgr.1.tgz","dsh-mgr-workspace":"file:/usr/local/lib/dsh-mgr/dsh-mgr-workspace-1.0.0.tgz","dsh-web-mobile":"file:/usr/local/lib/dsh-mgr/dsh-web-mobile-3.0.5.tgz","dsh-free-search":"file:/usr/local/lib/dsh-mgr/dsh-free-search-0.8.5.tgz"}; process.exit(Object.entries({...m.dependencies,...m.devDependencies,...m.optionalDependencies}).every(([n,v])=>pins[n]===v)?0:1)'; then
+    if node -e 'const m=require(process.env.DSH_HOME+"/profiles/web/package.json"); const pins={"dsh-preview-download":"file:/usr/local/lib/dsh-mgr/dsh-preview-download-1.0.1.tgz","dsh-chat-manager":"file:/usr/local/lib/dsh-mgr/dsh-chat-manager-1.5.12-dsh-mgr.1.tgz","dsh-mgr-workspace":"file:/usr/local/lib/dsh-mgr/dsh-mgr-workspace-1.0.0.tgz","dsh-web-mobile":"file:/usr/local/lib/dsh-mgr/dsh-web-mobile-3.0.5.tgz","dsh-free-search":"file:/usr/local/lib/dsh-mgr/dsh-free-search-0.8.5.tgz"}; process.exit(Object.entries({...m.dependencies,...m.devDependencies,...m.optionalDependencies}).every(([n,v])=>pins[n]===v)?0:1)'; then
         install_env=(npm_config_offline=true)
     fi
     if timeout --signal=TERM --kill-after=5s 120s env CI=true "${install_env[@]}" dsh plugin --profile web install --ignore-scripts; then
diff --git a/image/init-profile.mjs b/image/init-profile.mjs
index e3ab31d..ea2993c 100644
--- a/image/init-profile.mjs
+++ b/image/init-profile.mjs
@@ -14,7 +14,7 @@ if (!existsSync(profile) || readdirSync(profile).length === 0) {
   mkdirSync(profile, { recursive: true });
   writeFileSync(join(profile, 'package.json'), JSON.stringify({
     name: 'dsh-profile-web', private: true,
-    dependencies: { 'dsh-preview-download': 'file:/usr/local/lib/dsh-mgr/dsh-preview-download-1.0.0.tgz', 'dsh-chat-manager': 'file:/usr/local/lib/dsh-mgr/dsh-chat-manager-1.5.12-dsh-mgr.1.tgz', 'dsh-mgr-workspace': 'file:/usr/local/lib/dsh-mgr/dsh-mgr-workspace-1.0.0.tgz', 'dsh-web-mobile': 'file:/usr/local/lib/dsh-mgr/dsh-web-mobile-3.0.5.tgz', 'dsh-free-search': 'file:/usr/local/lib/dsh-mgr/dsh-free-search-0.8.5.tgz' },
+    dependencies: { 'dsh-preview-download': 'file:/usr/local/lib/dsh-mgr/dsh-preview-download-1.0.1.tgz', 'dsh-chat-manager': 'file:/usr/local/lib/dsh-mgr/dsh-chat-manager-1.5.12-dsh-mgr.1.tgz', 'dsh-mgr-workspace': 'file:/usr/local/lib/dsh-mgr/dsh-mgr-workspace-1.0.0.tgz', 'dsh-web-mobile': 'file:/usr/local/lib/dsh-mgr/dsh-web-mobile-3.0.5.tgz', 'dsh-free-search': 'file:/usr/local/lib/dsh-mgr/dsh-free-search-0.8.5.tgz' },
     pnpm: { overrides: {
       'dsh-chat-manager>clsx': 'file:/usr/local/lib/dsh-mgr/clsx-2.1.1.tgz',
       'dsh-free-search>@deepseek-ai/schemastery': 'file:/usr/local/lib/dsh-mgr/schemastery-3.18.4.tgz',
diff --git a/image/init-profile.test.mjs b/image/init-profile.test.mjs
index 7b28d70..fc1df86 100644
--- a/image/init-profile.test.mjs
+++ b/image/init-profile.test.mjs
@@ -11,7 +11,7 @@ test('new profile enables bundle once and preserves existing configuration', ()
     run();
     const file=join(home,'profiles/web/package.json');
     const original=readFileSync(file,'utf8');
-    assert.equal(JSON.parse(original).dependencies['dsh-preview-download'], 'file:/usr/local/lib/dsh-mgr/dsh-preview-download-1.0.0.tgz');
+    assert.equal(JSON.parse(original).dependencies['dsh-preview-download'], 'file:/usr/local/lib/dsh-mgr/dsh-preview-download-1.0.1.tgz');
     assert.equal(JSON.parse(original).dsh.profile.bundles.filter(name => name === 'dsh-preview-download').length, 1);
     assert.ok(JSON.parse(original).dsh.profile.bundles.includes('dsh-chat-manager'));
     assert.equal(JSON.parse(original).dependencies['dsh-chat-manager'], 'file:/usr/local/lib/dsh-mgr/dsh-chat-manager-1.5.12-dsh-mgr.1.tgz');
diff --git a/image/install-preview-download.mjs b/image/install-preview-download.mjs
index 2315981..b75a16c 100644
--- a/image/install-preview-download.mjs
+++ b/image/install-preview-download.mjs
@@ -5,4 +5,4 @@ const host = JSON.parse(readFileSync('/usr/local/lib/node_modules/@deepseek-ai/d
 if (host.version !== '0.2.0-rc.2') throw new Error('Unverified preview download host');
 mkdirSync(root + '/preview-download-package', { recursive: true });
 cpSync(new URL('./preview-download', import.meta.url), root + '/preview-download-package/package', { recursive: true });
-execFileSync('tar', ['-czf', root + '/dsh-preview-download-1.0.0.tgz', '-C', root + '/preview-download-package', 'package']);
+execFileSync('tar', ['-czf', root + '/dsh-preview-download-1.0.1.tgz', '-C', root + '/preview-download-package', 'package']);
diff --git a/image/preview-download.test.mjs b/image/preview-download.test.mjs
index 9b57c49..2f359bf 100644
--- a/image/preview-download.test.mjs
+++ b/image/preview-download.test.mjs
@@ -45,3 +45,27 @@ test('plugin registers only the supported preview action slot', () => {
   assert.equal(registration.id, 'dsh-preview-download');
   assert.equal(typeof registration.inject('session-A').download, 'function');
 });
+
+test('registered download declares every service used by its callback', async () => {
+  const plugin = load();
+  assert.ok(plugin.inject.includes('remote'));
+  assert.ok(plugin.inject.includes('remote.workspaceFiles'));
+  let registration;
+  let calls = 0;
+  const data = new Uint8Array([1, 2, 255]);
+  const ctx = {
+    effect: fn => fn(),
+    locale: { register: () => () => {} },
+    slots: { inject: (_name, fn) => fn(), register(options) { registration = options; return () => {}; } },
+    get remote() {
+      assert.ok(plugin.inject.includes('remote'), 'Cordis requires explicit remote injection');
+      return { workspaceFiles: { async readBytes(session, path) {
+        assert.equal(session, 'session-A'); assert.equal(path, '/file.bin'); calls++;
+        return { ok: true, value: { offset: 0, eof: true, bytes: 3, data } };
+      } } };
+    }
+  };
+  plugin.apply(ctx);
+  assert.equal(await registration.inject('session-A').download('/file.bin', new AbortController().signal), data);
+  assert.equal(calls, 1);
+});
diff --git a/image/preview-download/client.js b/image/preview-download/client.js
index 93ab5fa..38200a6 100644
--- a/image/preview-download/client.js
+++ b/image/preview-download/client.js
@@ -60,7 +60,7 @@ window.__ModuleLoader__.load({ id: 'dsh-preview-download', factory: require => {
   }
 
   return {
-    inject: ['slots', 'locale', 'remote.workspaceFiles'],
+    inject: ['slots', 'locale', 'remote', 'remote.workspaceFiles'],
     apply(ctx) {
       ctx.effect(() => ctx.locale.register(namespace, {
         zh: { download: '下载原文件', loading: '下载中…', failed: '下载失败，请检查文件权限或重试。', tooLarge: '文件超过下载大小限制。' },
diff --git a/image/preview-download/package.json b/image/preview-download/package.json
index 819cf3e..3e42e68 100644
--- a/image/preview-download/package.json
+++ b/image/preview-download/package.json
@@ -1,6 +1,6 @@
 {
   "name": "dsh-preview-download",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "private": true,
   "type": "module",
   "main": "index.js",
diff --git a/release.json b/release.json
index 64702d9..1017405 100644
--- a/release.json
+++ b/release.json
@@ -1,6 +1,6 @@
 {
   "schema_version": 1,
-  "release_id": "runtime-7.7",
+  "release_id": "runtime-7.8",
   "version": "0.2.0-rc.2",
   "deployment_schema": 7,
   "platforms": ["linux/amd64", "linux/arm64"]