新增卸载入口并清理冗余代码与文档

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,40 +1,9 @@
-<!-- 感谢贡献！请用中文或英文填写，不相关的条目可删除。 -->
-<!-- Thanks for contributing! Fill in Chinese or English; delete sections that don't apply. -->
-
 ## 概述 / Summary
 
-<!-- 一句话说明这个 PR 做了什么。 -->
-<!-- One-sentence description of what this PR does. -->
-
-## 动机 / Motivation
-
-<!-- 为什么需要这个改动？解决了什么问题或背景是什么。 -->
-<!-- Why is this change needed? What problem does it solve? -->
-
-## 改动内容 / Changes
-
-<!-- 列出关键改动点。 -->
-<!-- List the key changes. -->
-
--
-
-## 测试 / Testing
-
-<!-- 说明如何验证，例如命令、平台、浏览器版本等。 -->
-<!-- How was this verified: commands, platforms, browser versions, etc. -->
-
--
-
-## 影响范围 / Impact
-
-<!-- 会影响哪些平台（macOS / Linux / Windows / Chrome / Firefox）或用户。 -->
-<!-- Which platforms (macOS / Linux / Windows / Chrome / Firefox) or users are affected. -->
-
--
+<!-- 说明解决的问题和改动后的行为。 -->
+<!-- Describe the problem and the resulting behavior. -->
 
-## Checklist
+## 验证 / Testing
 
-- [ ] 已在相关平台实测通过 / Tested on the relevant platforms
-- [ ] 已通过 `pnpm run build` / `bash -n scripts/install.sh` 等基础检查 / Passed basic checks
-- [ ] 文档已同步更新（如需要）/ Docs updated if needed
-- [ ] 不包含无关改动 / No unrelated changes included
+<!-- 记录实际运行的检查及结果；按需注明平台和浏览器。 -->
+<!-- Record the checks you ran and their results; include platforms and browsers where relevant. -->

.github/workflows/uninstall.yml

@@ -0,0 +1,31 @@
+name: Uninstall lifecycle
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  uninstall:
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 20
+    env:
+      TEST_PWSH: '1'
+    steps:
+      - uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6
+      - uses: actions/setup-node@249970729cb0ef3589644e2896645e5dc5ba9c38 # v6
+        with:
+          node-version: 24
+      - uses: pnpm/action-setup@0977fd99725f1db4007ccb2928dbb4e90d06cc86 # v6
+        with:
+          run_install: false
+      - run: pnpm install --frozen-lockfile
+      - run: pnpm --filter dsh-browser-extension build
+      - run: pnpm test:uninstall

.gitignore

@@ -1,8 +1,8 @@
 node_modules/
-**/node_modules/
 **/lib/
 !benchmark/lib/
 !benchmark/lib/**
 **/dist/
 **/dist-firefox/
+coverage/
 .artifacts/