$ bun run lint
<头 10 行>
$ oxlint

  ! eslint-plugin-unicorn(prefer-array-find): Prefer `find` over filtering and accessing the first result.
    ,-[packages/desktop/src/renderer/utils/chat/autoTitle.ts:11:6]
 10 |     .map((line) => line.trim())
 11 |     .filter((line) => line && line !== '```');
    :      ^^^^^^
 12 |
    `----
  help: Use `find(predicate)` instead of `filter(predicate)[0]` or similar patterns.

... (总计 9818 行)

<尾 10 行>
  ! eslint-plugin-unicorn(prefer-add-event-listener): Prefer `addEventListener()` over their `on`-function counterparts.
     ,-[packages/desktop/src/renderer/components/settings/SettingsModal/contents/channels/WeixinConfigForm.tsx:323:8]
 322 |
 323 |     es.onerror = () => {
     :        ^^^^^^^
 324 |       es.close();
     `----

Found 846 warnings and 0 errors.
Finished in 46ms on 940 files with 128 rules using 12 threads.

$ echo $?
0

$ bunx tsc --noEmit
(无输出)

$ echo $?
0

$ bunx vitest run
 RUN  v4.1.0 /Users/zhoukai/Documents/github/AionUi


 Test Files  64 passed (64)
      Tests  720 passed (720)
   Start at  01:06:31
   Duration  9.44s (transform 2.67s, setup 2.84s, import 31.40s, tests 15.48s, environment 20.20s)

$ echo $?
0

$ prek run --from-ref origin/feat/backend-migration --to-ref HEAD
<头 10 行>
check yaml...............................................................Passed
check json...........................................(no files to check)Skipped
check toml...........................................(no files to check)Skipped
check for merge conflicts................................................Passed
check for case conflicts.................................................Passed
check for added large files..............................................Passed
fix end of files.........................................................Passed
trim trailing whitespace.................................................Passed
TypeScript Check.........................................................Passed
Oxlint...................................................................Passed

... (总计 12 行)

<尾 10 行>
check toml...........................................(no files to check)Skipped
check for merge conflicts................................................Passed
check for case conflicts.................................................Passed
check for added large files..............................................Passed
fix end of files.........................................................Passed
trim trailing whitespace.................................................Passed
TypeScript Check.........................................................Passed
Oxlint...................................................................Passed
Oxfmt....................................................................Passed
i18n Check...........................................(no files to check)Skipped

$ echo $?
0

diff --git a/.github/workflows/_build-reusable.yml b/.github/workflows/_build-reusable.yml
index b081779ba..f16898405 100644
--- a/.github/workflows/_build-reusable.yml
+++ b/.github/workflows/_build-reusable.yml
@@ -65,9 +65,8 @@ jobs:
       - name: TypeScript type check
         run: bunx tsc --noEmit

-      # Unit tests temporarily disabled — see docs/backend-migration/handoffs/ci-web-cli-release-outcome.md
-      # - name: Run unit tests
-      #   run: bunx vitest run
+      - name: Run unit tests
+        run: bunx vitest run

   build:
     name: Build ${{ matrix.platform }}

diff --git a/.github/workflows/build-and-release.yml b/.github/workflows/build-and-release.yml
index 61bd718dd..cc98d48af 100644
--- a/.github/workflows/build-and-release.yml
+++ b/.github/workflows/build-and-release.yml
@@ -50,10 +50,8 @@ jobs:
       - name: TypeScript type check
         run: bunx tsc --noEmit

-      # Unit tests temporarily disabled — see docs/backend-migration/handoffs/ci-web-cli-release-outcome.md
-      # 暂时跳过单元测试 —— 详见 handoff TODO
-      # - name: Run unit tests
-      #   run: bunx vitest run
+      - name: Run unit tests
+        run: bunx vitest run

   build-pipeline:
     name: Build Pipeline

diff --git a/.github/workflows/pack-web-cli.yml b/.github/workflows/pack-web-cli.yml
index a844d48f3..a014f6449 100644
--- a/.github/workflows/pack-web-cli.yml
+++ b/.github/workflows/pack-web-cli.yml
@@ -65,9 +65,8 @@ jobs:
       - name: TypeScript type check
         run: bunx tsc --noEmit

-      # Unit tests temporarily disabled — see docs/backend-migration/handoffs/ci-web-cli-release-outcome.md
-      # - name: Run unit tests
-      #   run: bunx vitest run
+      - name: Run unit tests
+        run: bunx vitest run

   pack-web-cli:
     name: Pack web-cli ${{ matrix.platform }}-${{ matrix.arch }}

diff --git a/docs/backend-migration/handoffs/ci-web-cli-release-outcome.md b/docs/backend-migration/handoffs/ci-web-cli-release-outcome.md
index 3f8e8..8c3e4 100644
--- a/docs/backend-migration/handoffs/ci-web-cli-release-outcome.md
+++ b/docs/backend-migration/handoffs/ci-web-cli-release-outcome.md
@@ -42,7 +42,7 @@

 ## 未解决的 TODO

-- **单元测试(`bunx vitest run`)在 3 个 code-quality job 中都被临时注释**(`build-and-release.yml`、`pack-web-cli.yml`、`_build-reusable.yml`)。原因:M1-M9 合入后仓库累积了 168 个 failing test / 49 个 failing test file,按用户要求暂时跳过以解除 release 通道阻塞。**必须尽快修**:搜 `Run unit tests` 的注释块,跟同步修复全仓单测一起恢复;不要让这个临时状态长期化
+- **单元测试(`bunx vitest run`)恢复** ✅ **DONE (N5 恢复于 2026-05-09)**:3 个 workflow 中被临时注释的 `bunx vitest run` 已在 N5 里程碑恢复(commit 5ea238139)。N1-N4 完成死代码清理 + 60 个新测试文件后,720 tests 全绿,CI 门禁已重新激活。详见 `docs/backend-migration/handoffs/N5-outcome.md`
 - **bundled-bun runtime 代码未清理**:backend 已自带 bun runtime,`prepareBundledBun` 在打包链上已全线移除(脚本/test/electron-builder/vitest/CI step 均已删除)。**仅剩 `packages/desktop/src/process/utils/shellEnv.ts:34-42` 的 `getBundledBunDir()` 及其 2 处 consumer**(行 416-418 / 565-567)需要后续确认 backend 真的提供 bun 后一并移除。
   - 当前行为:`getBundledBunDir()` 在 dmg 里找不到 `resources/bundled-bun/`,返回 null,consumer 自动 fallback 到系统 PATH,**不 crash**
   - `.gitignore:201` 的 `resources/bundled-bun` 条目保留,防止本地 dev 误提交这个目录