diff --git a/README.md b/README.md
index 1e5c95d..03af66b 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,17 @@
 # DSH Runtime Release
 
+## runtime-7.9：DSH next 与启动配置迁移
+
+DSH 固定为 `0.2.1-rc.2`（本次明确选择 npm `next`，查询时 `latest` 仍为 `0.2.0-rc.2`），mobile 升级为 `3.1.0`，Chat Manager 升级为明确声明支持新宿主的 `1.5.16-dsh-mgr.1`。free-search 升级为 `0.9.2`，workspace `1.0.0`、preview-download `1.0.1` 保持不变。
+
+现有 runtime 每次启动时检查 `profiles/web/package.json`，不另加容器、不联网追踪最新版。仅将 dependencies/devDependencies/optionalDependencies 中同名 `file:/usr/local/lib/dsh-mgr/<包名>-<版本>.tgz` 引用对齐镜像内置清单，并补齐相关缺失的 pnpm overrides。保留自定义安装来源、自定义 overrides、bundles、已删除的插件和其他配置。目标归档缺失、无效配置或不安全的符号链接会阻止启动。
+
+只有配置变化才写入，原文保存在同目录 `package.json.backup-<UUID>`，新文件通过原子替换写入，权限 `0600`；重复启动不会反复改写。恢复时先停止实例并备份现状，再恢复对应备份；要回退旧内置版本必须同时使用匹配的旧镜像，否则下一次启动会再次对齐当前镜像。迁移不提供针对同 UID 恶意并发修改目录的沙箱保护。
+
+新版设置 UI 已原生使用 host settings describe/mutate，构建只验证接口、不再应用旧 persistence 替换。Office 转换补丁仍限定精确宿主及插件版本；下载 slot/readBytes 和 workspaceRegistry 接口已核对上游源码。mobile/free-search 的预发布 peer 例外仅允许精确 `0.2.1-rc.2` 的 DSH 包且仍要求满足原版本范围（includePrerelease），其他依赖照常严格校验。
+
+当前自动化回归 40 项通过；AMD64 镜像已构建，禁网 UID 1000 新 profile 安装、HTTP 未认证 401、旧 mobile/free-search/chat-manager 引用迁移、备份与幂等检查通过。Office 的已安装 DSH convertBytes 集成及 DOCX/PPTX/DOC/PPT 并发、限制、超时、清理测试通过。pnpm 会提示由宿主提供的 peer 缺失/范围冲突；这不是浏览器交互兼容性证明。浏览器完整交互、真实搜索结果、设置保存、终端原生模块和 ARM64 尚未验收。以下旧发布记录中的“已有 profile 不自动改写”仅适用于旧版本。
+
 ## 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。
@@ -76,7 +88,7 @@ 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-7.8`、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-7.9`、DSH `0.2.1-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/Dockerfile b/image/Dockerfile
index 29fe0a4..c0f9a9f 100644
--- a/image/Dockerfile
+++ b/image/Dockerfile
@@ -19,7 +19,7 @@ COPY install-chat-manager.mjs patch-chat-manager.mjs /usr/local/lib/dsh-mgr/
 RUN node /usr/local/lib/dsh-mgr/install-chat-manager.mjs
 COPY install-workspace.mjs /usr/local/lib/dsh-mgr/install-workspace.mjs
 RUN node /usr/local/lib/dsh-mgr/install-workspace.mjs
-COPY init-profile.mjs /usr/local/lib/dsh-mgr/init-profile.mjs
+COPY init-profile.mjs reconcile-profile.mjs /usr/local/lib/dsh-mgr/
 COPY install-host-settings.mjs /usr/local/lib/dsh-mgr/install-host-settings.mjs
 RUN node /usr/local/lib/dsh-mgr/install-host-settings.mjs
 COPY --from=proxy /usr/bin/caddy /usr/bin/caddy
diff --git a/image/entrypoint.sh b/image/entrypoint.sh
index c21feaa..eff7a1a 100644
--- a/image/entrypoint.sh
+++ b/image/entrypoint.sh
@@ -8,7 +8,7 @@ if [[ -f "${DSH_HOME}/profiles/web/package.json" ]]; then
     # pnpm otherwise probes registry metadata for the overlapping optional peer.
     # Restrict offline mode to profiles containing only our fixed archives.
     install_env=()
-    if node -e 'const m=require(process.env.DSH_HOME+"/profiles/web/package.json"); const pins={"dsh-preview-download":"file:/usr/local/lib/dsh-mgr/dsh-preview-download-1.0.1.tgz","dsh-chat-manager":"file:/usr/local/lib/dsh-mgr/dsh-chat-manager-1.5.12-dsh-mgr.1.tgz","dsh-mgr-workspace":"file:/usr/local/lib/dsh-mgr/dsh-mgr-workspace-1.0.0.tgz","dsh-web-mobile":"file:/usr/local/lib/dsh-mgr/dsh-web-mobile-3.0.5.tgz","dsh-free-search":"file:/usr/local/lib/dsh-mgr/dsh-free-search-0.8.5.tgz"}; process.exit(Object.entries({...m.dependencies,...m.devDependencies,...m.optionalDependencies}).every(([n,v])=>pins[n]===v)?0:1)'; then
+    if node -e 'import("/usr/local/lib/dsh-mgr/reconcile-profile.mjs").then(({BUILTIN_DEPENDENCIES:pins,BUILTIN_OVERRIDES:overrides})=>{const m=require(process.env.DSH_HOME+"/profiles/web/package.json"); process.exit([m.dependencies,m.devDependencies,m.optionalDependencies].every(section=>Object.entries(section||{}).every(([n,v])=>pins[n]===v))&&Object.entries(m.pnpm?.overrides||{}).every(([n,v])=>overrides[n]===v)?0:1)})'; then
         install_env=(npm_config_offline=true)
     fi
     if timeout --signal=TERM --kill-after=5s 120s env CI=true "${install_env[@]}" dsh plugin --profile web install --ignore-scripts; then
diff --git a/image/init-profile.mjs b/image/init-profile.mjs
index ea2993c..f7755e6 100644
--- a/image/init-profile.mjs
+++ b/image/init-profile.mjs
@@ -1,36 +1,37 @@
-import { mkdirSync, existsSync, writeFileSync, readFileSync, readdirSync, lstatSync } from 'node:fs';
-import { join } from 'node:path';
-const home = process.env.DSH_HOME;
-if (!home) throw new Error('DSH_HOME required');
-const profile = join(home, 'profiles/web');
-for (const dir of [home, join(home, 'profiles'), profile]) {
-  try {
-    const stat = lstatSync(dir);
-    if (!stat.isDirectory() || stat.isSymbolicLink()) throw new Error('unsafe profile directory');
-  } catch (error) { if (error.code !== 'ENOENT') throw error; }
-}
-// Never rewrite an existing user manifest or patch.
-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-1.0.1.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',
-      '@deepseek-ai/schemastery>@deepseek-ai/cosmokit': 'file:/usr/local/lib/dsh-mgr/cosmokit-1.8.5.tgz',
-      '@deepseek-ai/schemastery>@standard-schema/spec': 'file:/usr/local/lib/dsh-mgr/spec-1.1.0.tgz',
-    } },
-    dsh: { profile: { bundles: ['@deepseek-ai/dsh-base', '@deepseek-ai/dsh-web-app', 'dsh-web-mobile', 'dsh-free-search', 'dsh-mgr-workspace', 'dsh-chat-manager', 'dsh-preview-download'] } },
-  }, null, 2), { flag: 'wx', mode: 0o600 });
-  console.log('dsh-mgr: new web profile includes dsh-web-mobile@3.0.5 and dsh-free-search@0.8.5 and dsh-chat-manager@1.5.12-dsh-mgr.1');
-}
-const manifestPath = join(profile, 'package.json');
-const workspacePath = join(profile, 'pnpm-workspace.yaml');
-// Backups omit workspace settings; restore host-provided peers before pnpm runs.
-if (existsSync(manifestPath) && !existsSync(workspacePath)) {
-  const manifest = JSON.parse(readFileSync(manifestPath, 'utf8'));
-  if (manifest.dependencies?.['dsh-chat-manager'] === 'file:/usr/local/lib/dsh-mgr/dsh-chat-manager-1.5.12-dsh-mgr.1.tgz' || manifest.dependencies?.['dsh-web-mobile'] === 'file:/usr/local/lib/dsh-mgr/dsh-web-mobile-3.0.5.tgz' || manifest.dependencies?.['dsh-free-search'] === 'file:/usr/local/lib/dsh-mgr/dsh-free-search-0.8.5.tgz') {
-    writeFileSync(workspacePath, 'packages:\n  - .\n\nnodeLinker: hoisted\nautoInstallPeers: false\n', { flag: 'wx', mode: 0o600 });
+import { mkdirSync, existsSync, writeFileSync, readFileSync, readdirSync } from 'node:fs';
+import { join, resolve } from 'node:path';
+import { pathToFileURL } from 'node:url';
+import { BUILTIN_DEPENDENCIES, BUILTIN_OVERRIDES, assertSafeProfile, reconcileProfile } from './reconcile-profile.mjs';
+export function initProfile(home, options) {
+  if (!home) throw new Error('DSH_HOME required');
+  const profile = join(home, 'profiles/web');
+  assertSafeProfile(profile);
+  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: BUILTIN_DEPENDENCIES,
+      pnpm: { overrides: BUILTIN_OVERRIDES },
+      dsh: { profile: { bundles: ['@deepseek-ai/dsh-base', '@deepseek-ai/dsh-web-app', 'dsh-web-mobile', 'dsh-free-search', 'dsh-mgr-workspace', 'dsh-chat-manager', 'dsh-preview-download'] } },
+    }, null, 2), { flag: 'wx', mode: 0o600 });
+    console.log('dsh-mgr: new web profile includes dsh-web-mobile@3.1.0 and dsh-free-search@0.9.2 and dsh-chat-manager@1.5.16-dsh-mgr.1');
+  }
+  const migration = reconcileProfile(profile, options);
+  console.log(migration.changed
+    ? "dsh-mgr: builtin profile updated; original saved to " + migration.backupPath
+    : "dsh-mgr: builtin profile check complete; no changes");
+  const manifestPath = join(profile, 'package.json');
+  const workspacePath = join(profile, 'pnpm-workspace.yaml');
+  // Backups omit workspace settings; restore host-provided peers before pnpm runs.
+  if (existsSync(manifestPath) && !existsSync(workspacePath)) {
+    const manifest = JSON.parse(readFileSync(manifestPath, 'utf8'));
+    if (['dependencies', 'devDependencies', 'optionalDependencies'].some(section =>
+      ['dsh-chat-manager', 'dsh-web-mobile', 'dsh-free-search'].some(name => manifest[section]?.[name] === BUILTIN_DEPENDENCIES[name]))) {
+      writeFileSync(workspacePath, 'packages:\n  - .\n\nnodeLinker: hoisted\nautoInstallPeers: false\n', { flag: 'wx', mode: 0o600 });
+    }
   }
 }
+
+if (process.argv[1] && import.meta.url === pathToFileURL(resolve(process.argv[1])).href) {
+  initProfile(process.env.DSH_HOME);
+}
diff --git a/image/init-profile.test.mjs b/image/init-profile.test.mjs
index fc1df86..23dc2b4 100644
--- a/image/init-profile.test.mjs
+++ b/image/init-profile.test.mjs
@@ -2,27 +2,38 @@ import { test } from 'node:test';
 import assert from 'node:assert/strict';
 import { mkdtempSync, mkdirSync, readFileSync, writeFileSync, rmSync, symlinkSync, existsSync } from 'node:fs';
 import { tmpdir } from 'node:os';
-import { join } from 'node:path';
+import { join, basename } from 'node:path';
 import { execFileSync } from 'node:child_process';
+import { initProfile } from './init-profile.mjs';
+import { BUILTIN_DEPENDENCIES, BUILTIN_OVERRIDES } from './reconcile-profile.mjs';
+function archives(home) {
+  const archiveDirectory = join(home, 'archives');
+  mkdirSync(archiveDirectory, { recursive: true });
+  for (const value of [...Object.values(BUILTIN_DEPENDENCIES), ...Object.values(BUILTIN_OVERRIDES)]) {
+    writeFileSync(join(archiveDirectory, basename(value)), 'fixture');
+  }
+  return { archiveDirectory };
+}
 test('new profile enables bundle once and preserves existing configuration', () => {
   const home = mkdtempSync(join(tmpdir(), 'dsh-plugin-init-'));
   try {
-    const run = () => execFileSync(process.execPath, [new URL('./init-profile.mjs', import.meta.url).pathname], {env:{...process.env, DSH_HOME:home}});
+    const options = archives(home);
+    const run = () => initProfile(home, options);
     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-1.0.1.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');
+    assert.equal(JSON.parse(original).dependencies['dsh-chat-manager'], 'file:/usr/local/lib/dsh-mgr/dsh-chat-manager-1.5.16-dsh-mgr.1.tgz');
     assert.equal(JSON.parse(original).pnpm.overrides['dsh-chat-manager>clsx'], 'file:/usr/local/lib/dsh-mgr/clsx-2.1.1.tgz');
     assert.ok(JSON.parse(original).dsh.profile.bundles.includes('dsh-web-mobile'));
     assert.ok(JSON.parse(original).dsh.profile.bundles.includes('dsh-free-search'));
     assert.ok(JSON.parse(original).dsh.profile.bundles.includes('dsh-mgr-workspace'));
     assert.equal(JSON.parse(original).dependencies['dsh-mgr-workspace'], 'file:/usr/local/lib/dsh-mgr/dsh-mgr-workspace-1.0.0.tgz');
-    assert.equal(JSON.parse(original).dependencies['dsh-free-search'], 'file:/usr/local/lib/dsh-mgr/dsh-free-search-0.8.5.tgz');
+    assert.equal(JSON.parse(original).dependencies['dsh-free-search'], 'file:/usr/local/lib/dsh-mgr/dsh-free-search-0.9.2.tgz');
     assert.equal(JSON.parse(original).pnpm.overrides['dsh-free-search>@deepseek-ai/schemastery'], 'file:/usr/local/lib/dsh-mgr/schemastery-3.18.4.tgz');
-    assert.equal(JSON.parse(original).dependencies['dsh-web-mobile'], 'file:/usr/local/lib/dsh-mgr/dsh-web-mobile-3.0.5.tgz');
+    assert.equal(JSON.parse(original).dependencies['dsh-web-mobile'], 'file:/usr/local/lib/dsh-mgr/dsh-web-mobile-3.1.0.tgz');
     const workspace = join(home, 'profiles/web/pnpm-workspace.yaml');
     assert.match(readFileSync(workspace, 'utf8'), /autoInstallPeers: false/);
     assert.match(readFileSync(workspace, 'utf8'), /nodeLinker: hoisted/);
@@ -51,20 +62,27 @@ test('new profile enables bundle once and preserves existing configuration', ()
     writeFileSync(file,custom);run();assert.equal(readFileSync(file,'utf8'),custom);
   } finally { rmSync(home,{recursive:true,force:true}); }
 });
-test('chat-manager-only restored profile gets offline peer settings without manifest changes', () => {
+test('chat-manager-only restored profile gets overrides and offline peer settings', () => {
   const home = mkdtempSync(join(tmpdir(), 'dsh-chat-restore-'));
   try {
     const profile = join(home, 'profiles/web');
     mkdirSync(profile, { recursive: true });
-    const manifest = JSON.stringify({ dependencies: { 'dsh-chat-manager': 'file:/usr/local/lib/dsh-mgr/dsh-chat-manager-1.5.12-dsh-mgr.1.tgz' } });
+    const manifest = JSON.stringify({ dependencies: { 'dsh-chat-manager': 'file:/usr/local/lib/dsh-mgr/dsh-chat-manager-1.5.16-dsh-mgr.1.tgz' } });
     writeFileSync(join(profile, 'package.json'), manifest);
-    execFileSync(process.execPath, [new URL('./init-profile.mjs', import.meta.url).pathname], { env: { ...process.env, DSH_HOME: home } });
-    assert.equal(readFileSync(join(profile, 'package.json'), 'utf8'), manifest);
+    initProfile(home, archives(home));
+    assert.deepEqual(JSON.parse(readFileSync(join(profile, 'package.json'))), { ...JSON.parse(manifest), pnpm: { overrides: { 'dsh-chat-manager>clsx': BUILTIN_OVERRIDES['dsh-chat-manager>clsx'] } } });
     assert.match(readFileSync(join(profile, 'pnpm-workspace.yaml'), 'utf8'), /autoInstallPeers: false/);
     const entrypoint = readFileSync(new URL('./entrypoint.sh', import.meta.url), 'utf8');
-    const predicate = entrypoint.match(/if node -e '([^']+)'/)[1];
+    const predicate = entrypoint.match(/if node -e '([^']+)'/)[1].replace('/usr/local/lib/dsh-mgr/reconcile-profile.mjs', new URL('./reconcile-profile.mjs', import.meta.url).href);
     execFileSync(process.execPath, ['-e', predicate], { env: { ...process.env, DSH_HOME: home } });
-    writeFileSync(join(profile, 'package.json'), JSON.stringify({ dependencies: { 'dsh-chat-manager': '^1.5.12' } }));
+    for (const custom of [
+      { dependencies: { 'dsh-chat-manager': BUILTIN_DEPENDENCIES['dsh-chat-manager'] }, pnpm: { overrides: { 'dsh-chat-manager>clsx': '^2.0.0' } } },
+      { dependencies: { 'dsh-chat-manager': '^1.5.16' }, optionalDependencies: { 'dsh-chat-manager': BUILTIN_DEPENDENCIES['dsh-chat-manager'] } },
+    ]) {
+      writeFileSync(join(profile, 'package.json'), JSON.stringify(custom));
+      assert.throws(() => execFileSync(process.execPath, ['-e', predicate], { env: { ...process.env, DSH_HOME: home }, stdio: 'pipe' }));
+    }
+    writeFileSync(join(profile, 'package.json'), JSON.stringify({ dependencies: { 'dsh-chat-manager': '^1.5.16' } }));
     assert.throws(() => execFileSync(process.execPath, ['-e', predicate], { env: { ...process.env, DSH_HOME: home }, stdio: 'pipe' }));
   } finally { rmSync(home, { recursive: true, force: true }); }
 });
@@ -74,7 +92,7 @@ test('nonempty legacy profiles are not automatically injected', () => {
     const profile = join(home, 'profiles/web');
     mkdirSync(profile, { recursive: true });
     writeFileSync(join(profile, 'cordis.patch.yml'), '[]');
-    execFileSync(process.execPath, [new URL('./init-profile.mjs', import.meta.url).pathname], { env: { ...process.env, DSH_HOME: home } });
+    initProfile(home, archives(home));
     assert.equal(existsSync(join(profile, 'package.json')), false);
     assert.equal(existsSync(join(profile, 'pnpm-workspace.yaml')), false);
   } finally { rmSync(home, { recursive: true, force: true }); }
diff --git a/image/install-chat-manager.mjs b/image/install-chat-manager.mjs
index 02dfeb2..0090faa 100644
--- a/image/install-chat-manager.mjs
+++ b/image/install-chat-manager.mjs
@@ -1,16 +1,16 @@
 import { createHash } from 'node:crypto';
-import { mkdirSync, writeFileSync, readFileSync } from 'node:fs';
+import { mkdirSync, writeFileSync, readFileSync, readdirSync } from 'node:fs';
 import { execFileSync } from 'node:child_process';
 import { createRequire } from 'node:module';
 import { patchClient } from './patch-chat-manager.mjs';
 
 const root = '/usr/local/lib/dsh-mgr';
-const version = '1.5.12';
-const patchedVersion = '1.5.12-dsh-mgr.1';
+const version = '1.5.16';
+const patchedVersion = '1.5.16-dsh-mgr.1';
 const hostManifest = '/usr/local/lib/node_modules/@deepseek-ai/dsh/package.json';
 const destination = '/usr/local/lib/node_modules/@deepseek-ai/dsh/node_modules/dsh-chat-manager';
 const packages = [
-  ['dsh-chat-manager', version, 'https://registry.npmjs.org/dsh-chat-manager/-/dsh-chat-manager-1.5.12.tgz', 'UpecIKftHTKZMAdZg0w/GFtYGN2A/fB7NVQ/OrrBOKsq1frN5nm4CDBH8KZggwfT9GSx+MjwLlwYgxDfDWLm4g=='],
+  ['dsh-chat-manager', version, 'https://registry.npmjs.org/dsh-chat-manager/-/dsh-chat-manager-1.5.16.tgz', 'tPE79Q/FKA9+MxI/GAcRACyN48tm9vxqM9kb4iMRDgP4EMaS39Ipbe7+4XisZcYIR6QjndBc8mQjlxb/gnFzuQ=='],
   ['clsx', '2.1.1', 'https://registry.npmjs.org/clsx/-/clsx-2.1.1.tgz', 'eYm0QWBtUrBWZWG0d386OGAw16Z995PiOVo2B7bjWSbHedGl5e0ZWaq65kOGgUSNesEIDkB9ISbTg/JK9dhCZA=='],
 ];
 mkdirSync(root, { recursive: true });
@@ -30,8 +30,23 @@ const require = createRequire(hostManifest);
 const host = JSON.parse(readFileSync(hostManifest));
 const semver = createRequire('/usr/local/lib/node_modules/npm/package.json')('semver');
 for (const [name, range] of Object.entries(pkg.peerDependencies || {})) {
+  // 1.5.16 retains this optional legacy peer but its runtime no longer imports it.
+  if (name === '@deepseek-ai/dsh-invariants' && pkg.peerDependenciesMeta?.[name]?.optional) {
+    for (const file of ['src/index.js', 'src/host/archive-manager.mjs', 'src/host/delete-session.mjs', 'lib/client.js']) {
+      if (readFileSync(destination + '/' + file, 'utf8').includes(name)) throw new Error('legacy invariants peer is used again');
+    }
+    continue;
+  }
   if (name === 'react') {
-    if (host.version !== '0.2.0-rc.2') throw new Error('unverified browser React host: ' + host.version);
+    if (host.version !== '0.2.1-rc.2') throw new Error('unverified browser React host: ' + host.version);
+    continue;
+  }
+  // New web hosts bundle this pure UI module in the browser bootstrap.
+  if (['@deepseek-ai/dsh-client-ui-primitives', '@deepseek-ai/dsh-client-ui-slots'].includes(name) && host.version === '0.2.1-rc.2') {
+    const frontend = require.resolve('@deepseek-ai/dsh-web-frontend/package.json');
+    const assets = frontend.slice(0, -'package.json'.length) + 'dist/assets';
+    const frontendVersion = JSON.parse(readFileSync(frontend)).version;
+    if (frontendVersion !== host.version || !semver.satisfies(frontendVersion, range) || !readdirSync(assets).filter(file => /^index-.*\.js$/.test(file)).some(file => readFileSync(assets + '/' + file, 'utf8').includes(JSON.stringify(name) + ':'))) throw new Error('missing browser UI provider');
     continue;
   }
   const peer = require(name + '/package.json');
diff --git a/image/install-free-search.mjs b/image/install-free-search.mjs
index f314897..80e621d 100644
--- a/image/install-free-search.mjs
+++ b/image/install-free-search.mjs
@@ -4,7 +4,7 @@ import { execFileSync } from 'node:child_process';
 import { createRequire } from 'node:module';
 const root = '/usr/local/lib/dsh-mgr';
 const packages = [
-  ['dsh-free-search', '0.8.5', 'https://registry.npmjs.org/dsh-free-search/-/dsh-free-search-0.8.5.tgz', 'MT00Xtypw9uk9QsqaiRmtVbYwnPON+HJY1lZjYritEvuwSe9ahgG9NVO43lUI+Eje2umrqUapaeqLRYf34DrZw=='],
+  ['dsh-free-search', '0.9.2', 'https://registry.npmjs.org/dsh-free-search/-/dsh-free-search-0.9.2.tgz', 'pFT/ngMcA7hxjbubNbl9iIBmf0zq9I6seVFcHVR8jUckCgoqoX92vjAmVIGA5mzSKELe/CFkq7uCnXtdTIg92Q=='],
   ['@deepseek-ai/schemastery', '3.18.4', 'https://registry.npmjs.org/@deepseek-ai/schemastery/-/schemastery-3.18.4.tgz', 'SSXO6tYuyrIqKVbmOnIq0s+riUywYzouFMcnBluHF9n4KMo2G8HvEzhCYj6pj2617/glOjbJuVInJ9hfONsjkg=='],
   ['@deepseek-ai/cosmokit', '1.8.5', 'https://registry.npmjs.org/@deepseek-ai/cosmokit/-/cosmokit-1.8.5.tgz', 'LXsrlem9z8dq4sLflj2yuCuYX7KqhdzF5hZly3eZyuTo8d6oDSOXuEgC5DbQWKW+lksm6zmOutQLsP/ma6wR6A=='],
   ['@standard-schema/spec', '1.1.0', 'https://registry.npmjs.org/@standard-schema/spec/-/spec-1.1.0.tgz', 'l2aFy5jALhniG5HgqrD6jXLi/rUWrKvqN/qJx6yoJsgKhblVd+iqqU4RCXavm/jPityDo5TCvKMnpjKnOriy0w=='],
@@ -20,21 +20,21 @@ for (const [name, version, url, integrity] of packages) {
 const hostManifest = '/usr/local/lib/node_modules/@deepseek-ai/dsh/package.json';
 const destination = '/usr/local/lib/node_modules/@deepseek-ai/dsh/node_modules/dsh-free-search';
 mkdirSync(destination, { recursive: true });
-execFileSync('tar', ['-xzf', `${root}/dsh-free-search-0.8.5.tgz`, '--strip-components=1', '--no-same-owner', '-C', destination]);
+execFileSync('tar', ['-xzf', `${root}/dsh-free-search-0.9.2.tgz`, '--strip-components=1', '--no-same-owner', '-C', destination]);
 execFileSync('chmod', ['-R', 'a+rX', destination]);
 const pkg = JSON.parse(readFileSync(destination + '/package.json'));
-if (pkg.name !== 'dsh-free-search' || pkg.version !== '0.8.5' || JSON.stringify(pkg.dependencies) !== JSON.stringify({ '@deepseek-ai/schemastery': '^3.18.4' })) throw new Error('unexpected free-search metadata');
+if (pkg.name !== 'dsh-free-search' || pkg.version !== '0.9.2' || JSON.stringify(pkg.dependencies) !== JSON.stringify({ '@deepseek-ai/schemastery': '^3.18.4' })) throw new Error('unexpected free-search metadata');
 const require = createRequire(hostManifest);
 const semver = createRequire('/usr/local/lib/node_modules/npm/package.json')('semver');
 for (const [name, range] of Object.entries({ ...pkg.peerDependencies, ...pkg.dependencies })) {
   if (name === 'react') {
-    if (!['0.2.0-rc.1', '0.2.0-rc.2'].includes(require('./package.json').version)) throw new Error('unverified browser React host');
+    if (!['0.2.0-rc.1', '0.2.1-rc.2'].includes(require('./package.json').version)) throw new Error('unverified browser React host');
     continue;
   }
   const peer = require(name + '/package.json');
-  if (!semver.satisfies(peer.version, range)) throw new Error('incompatible free-search host dependency: ' + name);
+  if (!(semver.satisfies(peer.version, range) || (peer.version === "0.2.1-rc.2" && name.startsWith("@deepseek-ai/dsh-") && semver.satisfies(peer.version, range, { includePrerelease: true })))) throw new Error('incompatible free-search host dependency: ' + name);
 }
 const host = JSON.parse(readFileSync(hostManifest));
-host.dependencies = { ...host.dependencies, 'dsh-free-search': '0.8.5' };
+host.dependencies = { ...host.dependencies, 'dsh-free-search': '0.9.2' };
 writeFileSync(hostManifest, JSON.stringify(host, null, 2));
-console.log('Installed dsh-free-search@0.8.5 and pinned offline dependency archives (SHA-512 verified; no lifecycle scripts)');
+console.log('Installed dsh-free-search@0.9.2 and pinned offline dependency archives (SHA-512 verified; no lifecycle scripts)');
diff --git a/image/install-host-settings.mjs b/image/install-host-settings.mjs
index e9cffe8..273e149 100644
--- a/image/install-host-settings.mjs
+++ b/image/install-host-settings.mjs
@@ -8,6 +8,11 @@ const replacement = 'const persistence = "host"; /* dsh-mgr: authenticated remot
 // Deliberately scoped to the settings UI, not connection.isLoopback or auth.
 // Fail closed on upstream changes instead of silently shipping a broken UI.
 export function patchSettings(source, version) {
+  // Native host settings supersede the old persistence patch.
+  if (version === "0.2.1-rc.2") {
+    if (source.includes(target) || !source.includes("this.ctx.remote.settings.describe()") || !source.includes("this.ctx.remote.settings.mutate(")) throw new Error("expected native host settings API");
+    return source;
+  }
   if (version !== '0.2.0-rc.2') throw new Error('unsupported DSH version for host settings patch');
   if (source.split(target).length !== 2 || source.includes(replacement)) {
     throw new Error('expected exactly one unpatched settings persistence selector');
diff --git a/image/install-host-settings.test.mjs b/image/install-host-settings.test.mjs
index 781a4e7..c6acd6c 100644
--- a/image/install-host-settings.test.mjs
+++ b/image/install-host-settings.test.mjs
@@ -4,6 +4,13 @@ import { runInNewContext } from 'node:vm';
 import { readFileSync } from 'node:fs';
 import { patchSettings, target } from './install-host-settings.mjs';
 
+test("next host settings API remains unchanged", () => {
+  const source = "this.ctx.remote.settings.describe(); this.ctx.remote.settings.mutate(namespace, ops, revision);";
+  assert.equal(patchSettings(source, "0.2.1-rc.2"), source);
+  assert.throws(() => patchSettings(target, "0.2.1-rc.2"), /native host settings/);
+  assert.throws(() => patchSettings("", "0.2.1-rc.2"), /native host settings/);
+});
+
 test('settings use host persistence on domains without changing loopback facts', () => {
   for (const isLoopback of [false, true]) {
     const ctx = { remote: { $host: { isLoopback } } };
diff --git a/image/install-mobile.mjs b/image/install-mobile.mjs
index 9c6f819..c0405de 100644
--- a/image/install-mobile.mjs
+++ b/image/install-mobile.mjs
@@ -2,15 +2,15 @@ import { createHash } from 'node:crypto';
 import { mkdirSync, writeFileSync, readFileSync } from 'node:fs';
 import { execFileSync } from 'node:child_process';
 import { createRequire } from 'node:module';
-const version = '3.0.5';
-const integrity = 'N3wmegFHSd23J0+xjotKyBq0ZbLXUbkWZ65E+aSw5pzB/nudhaNHWT2V3CSNaW/LX3s6AxAWB2APpfA0dLXJZQ==';
-const response = await fetch('https://registry.npmjs.org/dsh-web-mobile/-/dsh-web-mobile-3.0.5.tgz', { signal: AbortSignal.timeout(120000) });
+const version = '3.1.0';
+const integrity = 'dvRn0p0Y54RQErNRmW8z6K7JQJpo2euuMcgTvfJtgEMUJecs9Mcg4jqUNbmHWeMyijmZMUes/IRbzopDxKIdXA==';
+const response = await fetch('https://registry.npmjs.org/dsh-web-mobile/-/dsh-web-mobile-3.1.0.tgz', { signal: AbortSignal.timeout(120000) });
 if (!response.ok) throw new Error('mobile plugin download failed');
 const data = Buffer.from(await response.arrayBuffer());
 if (createHash('sha512').update(data).digest('base64') !== integrity) throw new Error('mobile plugin integrity mismatch');
 const destination = '/usr/local/lib/node_modules/@deepseek-ai/dsh/node_modules/dsh-web-mobile';
 mkdirSync(destination, { recursive: true });
-const archive = '/usr/local/lib/dsh-mgr/dsh-web-mobile-3.0.5.tgz';
+const archive = '/usr/local/lib/dsh-mgr/dsh-web-mobile-3.1.0.tgz';
 writeFileSync(archive, data, { mode: 0o644 });
 execFileSync('tar', ['-xzf', archive, '--strip-components=1', '--no-same-owner', '-C', destination]);
 // Published tar modes can be owner-only; runtime is UID 1000, not build root.
@@ -24,7 +24,7 @@ for (const [name, range] of Object.entries(pkg.peerDependencies || {})) {
   // Limit that exception to the upstream-declared, tested RC hosts.
   if (name === 'react') {
     const host = require('./package.json').version;
-    if (!['0.2.0-rc.1', '0.2.0-rc.2'].includes(host)) throw new Error('unverified browser React host: ' + host);
+    if (!['0.2.0-rc.1', '0.2.1-rc.2'].includes(host)) throw new Error('unverified browser React host: ' + host);
     continue;
   }
   let peer;
@@ -33,7 +33,7 @@ for (const [name, range] of Object.entries(pkg.peerDependencies || {})) {
     if (pkg.peerDependenciesMeta?.[name]?.optional) continue;
     throw new Error('missing required mobile peer: ' + name);
   }
-  if (!semver.satisfies(peer.version, range)) throw new Error('incompatible mobile peer: ' + name + '@' + peer.version);
+  if (!(semver.satisfies(peer.version, range) || (peer.version === "0.2.1-rc.2" && name.startsWith("@deepseek-ai/dsh-") && semver.satisfies(peer.version, range, { includePrerelease: true })))) throw new Error('incompatible mobile peer: ' + name + '@' + peer.version);
 }
 // DSH runtime resolution traverses the installation manifest, not arbitrary
 // directories in node_modules. Declare the baked package in that graph.
@@ -41,4 +41,4 @@ const hostManifest = '/usr/local/lib/node_modules/@deepseek-ai/dsh/package.json'
 const host = JSON.parse(readFileSync(hostManifest));
 host.dependencies = { ...host.dependencies, 'dsh-web-mobile': version };
 writeFileSync(hostManifest, JSON.stringify(host, null, 2));
-console.log('Installed dsh-web-mobile@3.0.5 (SHA-512 verified; no lifecycle scripts)');
+console.log('Installed dsh-web-mobile@3.1.0 (SHA-512 verified; no lifecycle scripts)');
diff --git a/image/install-office-preview.mjs b/image/install-office-preview.mjs
index ca84ca1..9d8b884 100644
--- a/image/install-office-preview.mjs
+++ b/image/install-office-preview.mjs
@@ -4,7 +4,7 @@ import { pathToFileURL } from 'node:url';
 
 export const target = 'import { createConverter } from "@deepseek-ai/libreoffice-kit";';
 export function patchOffice(source, hostVersion, packageVersion) {
-  if (hostVersion !== '0.2.0-rc.2' || packageVersion !== '0.2.0-rc.2') throw new Error('unsupported Office preview version');
+  if (hostVersion !== '0.2.1-rc.2' || packageVersion !== '0.2.1-rc.2') throw new Error('unsupported Office preview version');
   if (source.split(target).length !== 2) throw new Error('expected exactly one original converter import');
   return source.replace(target, 'import { createConverter } from "./dsh-native-office.mjs";');
 }
diff --git a/image/install-preview-download.mjs b/image/install-preview-download.mjs
index b75a16c..f34d5f5 100644
--- a/image/install-preview-download.mjs
+++ b/image/install-preview-download.mjs
@@ -2,7 +2,7 @@ import { cpSync, mkdirSync, readFileSync } from 'node:fs';
 import { execFileSync } from 'node:child_process';
 const root = '/usr/local/lib/dsh-mgr';
 const host = JSON.parse(readFileSync('/usr/local/lib/node_modules/@deepseek-ai/dsh/package.json'));
-if (host.version !== '0.2.0-rc.2') throw new Error('Unverified preview download host');
+if (host.version !== '0.2.1-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-1.0.1.tgz', '-C', root + '/preview-download-package', 'package']);
diff --git a/image/native-office.test.mjs b/image/native-office.test.mjs
index 0cf2007..f547cd1 100644
--- a/image/native-office.test.mjs
+++ b/image/native-office.test.mjs
@@ -7,11 +7,11 @@ import { createConverter, runProcess } from './native-office.mjs';
 import { patchOffice, target } from './install-office-preview.mjs';
 
 test('patch is exact, version gated and refuses repeat application', () => {
-  const patched = patchOffice(target, '0.2.0-rc.2', '0.2.0-rc.2');
+  const patched = patchOffice(target, '0.2.1-rc.2', '0.2.1-rc.2');
   assert.match(patched, /dsh-native-office/);
-  for (const source of ['', target + target, patched]) assert.throws(() => patchOffice(source, '0.2.0-rc.2', '0.2.0-rc.2'));
-  assert.throws(() => patchOffice(target, 'next', '0.2.0-rc.2'));
-  assert.throws(() => patchOffice(target, '0.2.0-rc.2', 'next'));
+  for (const source of ['', target + target, patched]) assert.throws(() => patchOffice(source, '0.2.1-rc.2', '0.2.1-rc.2'));
+  assert.throws(() => patchOffice(target, 'next', '0.2.1-rc.2'));
+  assert.throws(() => patchOffice(target, '0.2.1-rc.2', 'next'));
 });
 
 test('process cancellation, missing binary and failure are classified', async () => {
diff --git a/image/patch-chat-manager.mjs b/image/patch-chat-manager.mjs
index 7565cb8..a33cc37 100644
--- a/image/patch-chat-manager.mjs
+++ b/image/patch-chat-manager.mjs
@@ -13,7 +13,7 @@ async function dshChatJson(response) {
 export const clientHelpers = dshChatFetch.toString() + String.fromCharCode(10) + dshChatJson.toString() + String.fromCharCode(10);
 
 export function patchClient(source, version) {
-  if (version !== '1.5.12') throw new Error('unsupported chat-manager version');
+  if (version !== '1.5.16') throw new Error('unsupported chat-manager version');
   if (source.includes('dshChatFetch') || source.split('await fetch(').length !== 4
       || source.split('await response.json()').length !== 4
       || source.split('/plugins/dsh-session-delete/').length !== 4) {
diff --git a/image/patch-chat-manager.test.mjs b/image/patch-chat-manager.test.mjs
index 6c765bc..d994a9a 100644
--- a/image/patch-chat-manager.test.mjs
+++ b/image/patch-chat-manager.test.mjs
@@ -26,9 +26,9 @@ test('non-JSON errors report HTTP status without exposing response content', asy
 });
 test('patch rejects unsupported or changed clients and double patching', () => {
   const source = Array(3).fill("await fetch('/plugins/dsh-session-delete/delete'); await response.json()").join(';');
-  const patched = patchClient(source, '1.5.12');
+  const patched = patchClient(source, '1.5.16');
   assert.equal(patched.split('await dshChatFetch(').length, 4);
   assert.throws(() => patchClient(source, '1.5.13'), /unsupported/);
-  assert.throws(() => patchClient('', '1.5.12'), /unexpected/);
-  assert.throws(() => patchClient(patched, '1.5.12'), /unexpected/);
+  assert.throws(() => patchClient('', '1.5.16'), /unexpected/);
+  assert.throws(() => patchClient(patched, '1.5.16'), /unexpected/);
 });
diff --git a/image/reconcile-profile.mjs b/image/reconcile-profile.mjs
new file mode 100644
index 0000000..387f3f2
--- /dev/null
+++ b/image/reconcile-profile.mjs
@@ -0,0 +1,121 @@
+import { lstatSync, readFileSync, writeFileSync, openSync, closeSync, fsyncSync, renameSync, unlinkSync } from 'node:fs';
+import { dirname, join, resolve, basename } from 'node:path';
+import { randomUUID } from 'node:crypto';
+
+export const BUILTIN_DEPENDENCIES = Object.freeze({
+  '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-1.5.16-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-3.1.0.tgz',
+  'dsh-free-search': 'file:/usr/local/lib/dsh-mgr/dsh-free-search-0.9.2.tgz',
+});
+export const BUILTIN_OVERRIDES = Object.freeze({
+  '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',
+  '@deepseek-ai/schemastery>@deepseek-ai/cosmokit': 'file:/usr/local/lib/dsh-mgr/cosmokit-1.8.5.tgz',
+  '@deepseek-ai/schemastery>@standard-schema/spec': 'file:/usr/local/lib/dsh-mgr/spec-1.1.0.tgz',
+});
+const sections = ['dependencies', 'devDependencies', 'optionalDependencies'];
+const overrideOwners = ['dsh-chat-manager', 'dsh-free-search', 'dsh-free-search', 'dsh-free-search'];
+const semver = '(?:0|[1-9]\\d*)\\.(?:0|[1-9]\\d*)\\.(?:0|[1-9]\\d*)(?:-(?:0|[1-9]\\d*|\\d*[A-Za-z-][0-9A-Za-z-]*)(?:\\.(?:0|[1-9]\\d*|\\d*[A-Za-z-][0-9A-Za-z-]*))*)?(?:\\+[0-9A-Za-z-]+(?:\\.[0-9A-Za-z-]+)*)?';
+
+function object(value, label) {
+  if (!value || typeof value !== 'object' || Array.isArray(value)) throw new Error(`invalid ${label}`);
+}
+
+export function reconcileManifest(input) {
+  object(input, 'manifest');
+  const manifest = structuredClone(input);
+  const active = new Set();
+  const archives = new Set();
+  let changed = false;
+  for (const section of sections) {
+    if (manifest[section] === undefined) continue;
+    object(manifest[section], section);
+    for (const [name, target] of Object.entries(BUILTIN_DEPENDENCIES)) {
+      const current = manifest[section][name];
+      if (typeof current !== 'string' || !new RegExp(`^file:/usr/local/lib/dsh-mgr/${name}-${semver}\\.tgz$`).test(current)) continue;
+      active.add(name);
+      archives.add(target);
+      if (current !== target) {
+        manifest[section][name] = target;
+        changed = true;
+      }
+    }
+  }
+  if (manifest.pnpm !== undefined) {
+    object(manifest.pnpm, 'pnpm');
+    if (manifest.pnpm.overrides !== undefined) object(manifest.pnpm.overrides, 'pnpm.overrides');
+  }
+  Object.entries(BUILTIN_OVERRIDES).forEach(([key, target], index) => {
+    if (!active.has(overrideOwners[index])) return;
+    manifest.pnpm ??= {};
+    manifest.pnpm.overrides ??= {};
+    if (!Object.hasOwn(manifest.pnpm.overrides, key)) {
+      manifest.pnpm.overrides[key] = target;
+      changed = true;
+    }
+    if (manifest.pnpm.overrides[key] === target) archives.add(target);
+  });
+  return { manifest, changed, archives: [...archives] };
+}
+
+function statIfPresent(path) {
+  try { return lstatSync(path); } catch (error) {
+    if (error.code !== 'ENOENT') throw error;
+  }
+}
+
+export function assertSafeProfile(profile) {
+  for (let dir = resolve(profile); ; dir = dirname(dir)) {
+    const stat = statIfPresent(dir);
+    if (stat && (!stat.isDirectory() || stat.isSymbolicLink())) throw new Error(`unsafe profile directory: ${dir}`);
+    if (dirname(dir) === dir) break;
+  }
+  for (const name of ['package.json', 'pnpm-workspace.yaml']) {
+    const path = join(profile, name);
+    const stat = statIfPresent(path);
+    if (stat && (!stat.isFile() || stat.isSymbolicLink())) throw new Error(`unsafe profile file: ${path}`);
+  }
+}
+
+export function reconcileProfile(profile, { archiveDirectory = '/usr/local/lib/dsh-mgr' } = {}) {
+  assertSafeProfile(profile);
+  const path = join(profile, 'package.json');
+  if (!statIfPresent(path)) return { changed: false };
+  const original = readFileSync(path);
+  const result = reconcileManifest(JSON.parse(original.toString('utf8')));
+  for (const reference of result.archives) {
+    const archive = join(archiveDirectory, basename(reference.slice(5)));
+    const stat = lstatSync(archive);
+    if (!stat.isFile() || stat.isSymbolicLink()) throw new Error(`unsafe builtin archive: ${archive}`);
+  }
+  if (!result.changed) return { changed: false };
+  const backupPath = `${path}.backup-${randomUUID()}`;
+  const temporaryPath = `${path}.tmp-${randomUUID()}`;
+  let temporaryCreated = false;
+  try {
+    const backupFd = openSync(backupPath, 'wx', 0o600);
+    try { writeFileSync(backupFd, original); fsyncSync(backupFd); }
+    finally { closeSync(backupFd); }
+    const syncDirectory = () => {
+      const directoryFd = openSync(profile, 'r');
+      try { fsyncSync(directoryFd); } finally { closeSync(directoryFd); }
+    };
+    // Make the recovery copy durable before replacing the active manifest.
+    syncDirectory();
+    const fd = openSync(temporaryPath, 'wx', 0o600);
+    temporaryCreated = true;
+    try {
+      writeFileSync(fd, JSON.stringify(result.manifest, null, 2) + '\n');
+      fsyncSync(fd);
+    } finally { closeSync(fd); }
+    assertSafeProfile(profile);
+    renameSync(temporaryPath, path);
+    temporaryCreated = false;
+    syncDirectory();
+  } finally {
+    if (temporaryCreated) unlinkSync(temporaryPath);
+  }
+  return { changed: true, backupPath };
+}
diff --git a/image/reconcile-profile.test.mjs b/image/reconcile-profile.test.mjs
new file mode 100644
index 0000000..4e1d7c0
--- /dev/null
+++ b/image/reconcile-profile.test.mjs
@@ -0,0 +1,242 @@
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+import fs, { mkdtempSync, mkdirSync, readFileSync, writeFileSync, rmSync, symlinkSync, readdirSync, statSync, linkSync } from 'node:fs';
+import { syncBuiltinESMExports } from 'node:module';
+import { tmpdir } from 'node:os';
+import { join, basename } from 'node:path';
+import { BUILTIN_DEPENDENCIES, BUILTIN_OVERRIDES, reconcileManifest, reconcileProfile } from './reconcile-profile.mjs';
+import { initProfile } from './init-profile.mjs';
+
+const old = name => 'file:/usr/local/lib/dsh-mgr/' + name + '-0.0.1-rc.1+build.2.tgz';
+function fixture(t, manifest) {
+  const root = mkdtempSync(join(tmpdir(), 'dsh-reconcile-'));
+  t.after(() => rmSync(root, { recursive: true, force: true }));
+  const profile = join(root, 'profiles/web');
+  const archiveDirectory = join(root, 'archives');
+  mkdirSync(profile, { recursive: true });
+  mkdirSync(archiveDirectory);
+  for (const reference of [...Object.values(BUILTIN_DEPENDENCIES), ...Object.values(BUILTIN_OVERRIDES)]) {
+    writeFileSync(join(archiveDirectory, basename(reference)), 'fixture');
+  }
+  const path = join(profile, 'package.json');
+  const original = typeof manifest === 'string' ? manifest : JSON.stringify(manifest, null, 4) + '\n';
+  writeFileSync(path, original);
+  return { root, profile, path, original, archiveDirectory, run: () => reconcileProfile(profile, { archiveDirectory }) };
+}
+
+test('migrates all sections, backs up exact bytes, replaces atomically with 0600, and is idempotent', t => {
+  const f = fixture(t, {
+    dependencies: { 'dsh-web-mobile': old('dsh-web-mobile') },
+    devDependencies: { 'dsh-chat-manager': old('dsh-chat-manager') },
+    optionalDependencies: { 'dsh-free-search': old('dsh-free-search') },
+    dsh: { profile: { bundles: [] } },
+  });
+  const originalLink = join(f.root, 'original-link');
+  linkSync(f.path, originalLink);
+  const first = f.run();
+  assert.equal(first.changed, true);
+  assert.equal(readFileSync(first.backupPath, 'utf8'), f.original);
+  assert.equal(readFileSync(originalLink, 'utf8'), f.original);
+  assert.equal(statSync(f.path).mode & 0o777, 0o600);
+  assert.equal(statSync(first.backupPath).mode & 0o777, 0o600);
+  const current = JSON.parse(readFileSync(f.path));
+  for (const section of ['dependencies', 'devDependencies', 'optionalDependencies']) {
+    for (const name of Object.keys(current[section])) assert.equal(current[section][name], BUILTIN_DEPENDENCIES[name]);
+  }
+  assert.deepEqual(current.pnpm.overrides, BUILTIN_OVERRIDES);
+  assert.deepEqual(current.dsh.profile.bundles, []);
+  const before = statSync(f.path);
+  assert.deepEqual(f.run(), { changed: false });
+  assert.equal(statSync(f.path).ino, before.ino);
+  assert.equal(statSync(f.path).mtimeMs, before.mtimeMs);
+  assert.equal(readdirSync(f.profile).length, 2);
+  writeFileSync(f.path, f.original);
+  assert.notEqual(f.run().backupPath, first.backupPath);
+  assert.equal(readFileSync(first.backupPath, 'utf8'), f.original);
+});
+
+function withSyncTrace(f, callback, failAt) {
+  const originals = Object.fromEntries(
+    ['openSync', 'writeFileSync', 'fsyncSync', 'closeSync', 'renameSync'].map(name => [name, fs[name]]),
+  );
+  const descriptors = new Map();
+  const events = [];
+  let directoryOpens = 0;
+  fs.openSync = (path, ...args) => {
+    const fd = originals.openSync(path, ...args);
+    const target = path === f.profile ? `directory-${++directoryOpens}`
+      : String(path).startsWith(`${f.path}.backup-`) ? 'backup'
+      : String(path).startsWith(`${f.path}.tmp-`) ? 'temporary' : undefined;
+    if (target) {
+      descriptors.set(fd, target);
+      events.push(`open:${target}`);
+    }
+    return fd;
+  };
+  for (const [name, operation] of [['writeFileSync', 'write'], ['fsyncSync', 'fsync'], ['closeSync', 'close']]) {
+    fs[name] = (fd, ...args) => {
+      const target = descriptors.get(fd);
+      if (target) {
+        const event = `${operation}:${target}`;
+        events.push(event);
+        if (event === failAt) throw new Error(`injected ${event} failure`);
+      }
+      const result = originals[name](fd, ...args);
+      if (name === 'closeSync') descriptors.delete(fd);
+      return result;
+    };
+  }
+  fs.renameSync = (source, destination) => {
+    assert.ok(source.startsWith(`${f.path}.tmp-`));
+    assert.equal(destination, f.path);
+    events.push('rename:manifest');
+    return originals.renameSync(source, destination);
+  };
+  syncBuiltinESMExports();
+  try {
+    callback(events);
+  } finally {
+    Object.assign(fs, originals);
+    syncBuiltinESMExports();
+  }
+}
+
+const durableWriteOrder = [
+  'open:backup', 'write:backup', 'fsync:backup', 'close:backup',
+  'open:directory-1', 'fsync:directory-1', 'close:directory-1',
+  'open:temporary', 'write:temporary', 'fsync:temporary', 'close:temporary',
+  'rename:manifest',
+  'open:directory-2', 'fsync:directory-2', 'close:directory-2',
+];
+
+test('syncs backup and directory before replacement, then syncs the renamed manifest directory', t => {
+  const f = fixture(t, { dependencies: { 'dsh-web-mobile': old('dsh-web-mobile') } });
+  withSyncTrace(f, events => {
+    const result = f.run();
+    assert.equal(result.changed, true);
+    assert.deepEqual(events, durableWriteOrder);
+    assert.equal(readFileSync(result.backupPath, 'utf8'), f.original);
+    assert.equal(JSON.parse(readFileSync(f.path)).dependencies['dsh-web-mobile'], BUILTIN_DEPENDENCIES['dsh-web-mobile']);
+  });
+});
+
+for (const target of ['backup', 'directory-1', 'temporary']) {
+  test(`${target} fsync failure preserves the original manifest and does not rename`, t => {
+    const f = fixture(t, { dependencies: { 'dsh-web-mobile': old('dsh-web-mobile') } });
+    const before = statSync(f.path);
+    const failAt = `fsync:${target}`;
+    withSyncTrace(f, events => {
+      assert.throws(f.run, { message: `injected ${failAt} failure` });
+      assert.deepEqual(events, [
+        ...durableWriteOrder.slice(0, durableWriteOrder.indexOf(failAt) + 1),
+        `close:${target}`,
+      ]);
+    }, failAt);
+    assert.equal(readFileSync(f.path, 'utf8'), f.original);
+    assert.equal(statSync(f.path).ino, before.ino);
+    assert.equal(statSync(f.path).mtimeMs, before.mtimeMs);
+    const backups = readdirSync(f.profile).filter(name => name.startsWith('package.json.backup-'));
+    assert.equal(backups.length, 1);
+    assert.equal(readFileSync(join(f.profile, backups[0]), 'utf8'), f.original);
+    assert.deepEqual(readdirSync(f.profile).sort(), ['package.json', ...backups].sort());
+  });
+}
+
+test('preserves deleted plugins, disabled bundles, custom dependencies and overrides', t => {
+  const custom = {
+    dependencies: { 'dsh-chat-manager': old('dsh-chat-manager'), 'dsh-web-mobile': '^3.0.0', other: old('other') },
+    devDependencies: { 'dsh-free-search': 'file:/custom/dsh-free-search-0.1.0.tgz' },
+    optionalDependencies: { 'dsh-preview-download': 'file:/usr/local/lib/dsh-mgr/not-the-same-1.0.0.tgz' },
+    pnpm: { overrides: { 'dsh-chat-manager>clsx': '^2.0.0', unrelated: 'custom' }, other: true },
+    dsh: { profile: { bundles: ['user-plugin'] } },
+  };
+  const f = fixture(t, custom);
+  writeFileSync(join(f.profile, 'pnpm-workspace.yaml'), 'custom workspace');
+  writeFileSync(join(f.profile, 'cordis.patch.yml'), 'custom patch');
+  f.run();
+  const expected = structuredClone(custom);
+  expected.dependencies['dsh-chat-manager'] = BUILTIN_DEPENDENCIES['dsh-chat-manager'];
+  assert.deepEqual(JSON.parse(readFileSync(f.path)), expected);
+  assert.equal(readFileSync(join(f.profile, 'pnpm-workspace.yaml'), 'utf8'), 'custom workspace');
+  assert.equal(readFileSync(join(f.profile, 'cordis.patch.yml'), 'utf8'), 'custom patch');
+});
+
+test('strict archive matching leaves non-semver references untouched', () => {
+  for (const version of ['latest', '01.0.0', '1.0', '1.0.0-01', '1.0.0.tgz/extra']) {
+    const input = { dependencies: { 'dsh-web-mobile': 'file:/usr/local/lib/dsh-mgr/dsh-web-mobile-' + version + '.tgz' } };
+    assert.equal(reconcileManifest(input).changed, false);
+  }
+});
+
+test('current defaults and user-only manifests remain byte-identical', t => {
+  for (const manifest of [
+    { dependencies: BUILTIN_DEPENDENCIES, pnpm: { overrides: BUILTIN_OVERRIDES } },
+    { dependencies: { 'dsh-chat-manager': '^1.0.0' }, custom: true },
+    { dsh: { profile: { bundles: [] } } },
+  ]) {
+    const f = fixture(t, manifest);
+    assert.equal(f.run().changed, false);
+    assert.equal(readFileSync(f.path, 'utf8'), f.original);
+    assert.deepEqual(readdirSync(f.profile), ['package.json']);
+  }
+});
+
+test('missing archives fail before writes, even when already current', t => {
+  for (const reference of [old('dsh-web-mobile'), BUILTIN_DEPENDENCIES['dsh-web-mobile']]) {
+    const f = fixture(t, { dependencies: { 'dsh-web-mobile': reference } });
+    rmSync(join(f.archiveDirectory, basename(BUILTIN_DEPENDENCIES['dsh-web-mobile'])));
+    assert.throws(f.run, /ENOENT/);
+    assert.equal(readFileSync(f.path, 'utf8'), f.original);
+    assert.deepEqual(readdirSync(f.profile), ['package.json']);
+  }
+});
+
+test('invalid JSON and malformed sections fail without changing original', t => {
+  for (const input of ['{ broken', 'null', '[]', JSON.stringify({ dependencies: [] }), JSON.stringify({ pnpm: { overrides: null } })]) {
+    const f = fixture(t, input);
+    assert.throws(f.run);
+    assert.equal(readFileSync(f.path, 'utf8'), input);
+    assert.deepEqual(readdirSync(f.profile), ['package.json']);
+  }
+});
+
+test('rejects manifest/workspace symlinks, dangling links and directories', t => {
+  for (const name of ['package.json', 'pnpm-workspace.yaml']) {
+    for (const kind of ['symlink', 'dangling', 'directory']) {
+      const f = fixture(t, { dependencies: { 'dsh-web-mobile': old('dsh-web-mobile') } });
+      const target = join(f.root, 'outside');
+      if (kind === 'symlink') writeFileSync(target, f.original);
+      const path = join(f.profile, name);
+      rmSync(path, { force: true });
+      if (kind === 'directory') mkdirSync(path);
+      else symlinkSync(target, path);
+      const before = readdirSync(f.profile);
+      assert.throws(f.run, /unsafe profile file/);
+      assert.deepEqual(readdirSync(f.profile), before);
+      if (kind === 'symlink') assert.equal(readFileSync(target, 'utf8'), f.original);
+      if (name !== 'package.json') assert.equal(readFileSync(f.path, 'utf8'), f.original);
+    }
+  }
+});
+
+test('rejects symlinked profile and ancestors', t => {
+  const f = fixture(t, '{}');
+  const link = join(f.root, 'linked');
+  symlinkSync(join(f.root, 'profiles'), link);
+  assert.throws(() => reconcileProfile(join(link, 'web'), { archiveDirectory: f.archiveDirectory }), /unsafe profile directory/);
+  const direct = join(f.root, 'direct');
+  symlinkSync(f.profile, direct);
+  assert.throws(() => reconcileProfile(direct), /unsafe profile directory/);
+});
+
+test('init migrates before restoring workspace and rejects unsafe workspace before writes', t => {
+  const f = fixture(t, { optionalDependencies: { 'dsh-web-mobile': old('dsh-web-mobile') } });
+  const run = () => initProfile(f.root, { archiveDirectory: f.archiveDirectory });
+  symlinkSync(join(f.root, 'missing'), join(f.profile, 'pnpm-workspace.yaml'));
+  assert.throws(run, /unsafe profile file/);
+  assert.equal(readFileSync(f.path, 'utf8'), f.original);
+  rmSync(join(f.profile, 'pnpm-workspace.yaml'));
+  run();
+  assert.equal(JSON.parse(readFileSync(f.path)).optionalDependencies['dsh-web-mobile'], BUILTIN_DEPENDENCIES['dsh-web-mobile']);
+  assert.match(readFileSync(join(f.profile, 'pnpm-workspace.yaml'), 'utf8'), /autoInstallPeers: false/);
+});
diff --git a/release.json b/release.json
index 1017405..2cbf6bf 100644
--- a/release.json
+++ b/release.json
@@ -1,7 +1,7 @@
 {
   "schema_version": 1,
-  "release_id": "runtime-7.8",
-  "version": "0.2.0-rc.2",
+  "release_id": "runtime-7.9",
+  "version": "0.2.1-rc.2",
   "deployment_schema": 7,
   "platforms": ["linux/amd64", "linux/arm64"]
 }