diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..1014ba7
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,12 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+indent_style = space
+indent_size = 2
+trim_trailing_whitespace = true
+
+[*.md]
+trim_trailing_whitespace = false
diff --git a/.gitattributes b/.gitattributes
index dfe0770..f423252 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,2 +1,15 @@
-# Auto detect text files and perform LF normalization
 * text=auto
+
+*.js text eol=lf
+*.json text eol=lf
+*.md text eol=lf
+*.yml text eol=lf
+*.yaml text eol=lf
+*.css text eol=lf
+*.html text eol=lf
+
+*.png binary
+*.jpg binary
+*.jpeg binary
+*.gif binary
+*.ico binary
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..7d34698
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,31 @@
+name: CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+
+jobs:
+  build_test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '18'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Lint
+        run: npm run lint
+
+      - name: Unit tests
+        run: npm test
+
+      - name: Build
+        run: npm run build
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 664bd84..e60695d 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -50,6 +50,8 @@ jobs:
         
       - name: Process bookmark files
         if: steps.check_bookmark_files.outputs.found == 'true'
+        env:
+          MENAV_BOOKMARKS_DETERMINISTIC: '1'
         run: |
           echo "Processing bookmark files..."
           node src/bookmark-processor.js
@@ -98,7 +100,16 @@ jobs:
               git commit -m "Add bookmarks configuration from imported bookmarks"
             fi
             
-            # Also check for navigation file changes
+            # Also check for site.yml changes（导航已合并到 site.yml）
+            if [ -f config/user/site.yml ]; then
+              if ! git diff --quiet config/user/site.yml; then
+                echo "config/user/site.yml has changes, committing..."
+                git add config/user/site.yml
+                git commit -m "Update site configuration for bookmarks"
+              fi
+            fi
+
+            # Also check for legacy navigation file changes
             if [ -f config/user/navigation.yml ]; then
               if ! git diff --quiet config/user/navigation.yml; then
                 echo "config/user/navigation.yml has changes, committing..."
@@ -194,4 +205,4 @@ jobs:
           
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v4 
\ No newline at end of file
+        uses: actions/deploy-pages@v4 
diff --git a/.prettierrc.json b/.prettierrc.json
new file mode 100644
index 0000000..132f5de
--- /dev/null
+++ b/.prettierrc.json
@@ -0,0 +1,7 @@
+{
+  "printWidth": 100,
+  "singleQuote": true,
+  "trailingComma": "es5",
+  "tabWidth": 2,
+  "useTabs": false
+}
diff --git a/README.md b/README.md
index 641a3a5..82d687e 100644
--- a/README.md
+++ b/README.md
@@ -265,6 +265,10 @@ npm install
    ```bash
    npm run import-bookmarks
    ```
+   - 若希望生成结果保持确定性（便于版本管理，减少时间戳导致的无意义 diff）：
+   ```bash
+   MENAV_BOOKMARKS_DETERMINISTIC=1 npm run import-bookmarks
+   ```
    - 系统会自动将书签转换为配置文件保存到`config/user/pages/bookmarks.yml`
    - **注意**：`npm run dev`命令不会自动处理书签文件，必须先手动运行上述命令
 
@@ -281,6 +285,19 @@ npm run build
 
 构建后的文件位于`dist`目录
 
+6. 提交前检查（推荐）
+
+```bash
+# 一键检查（语法检查 + 单元测试 + 构建）
+npm run check
+```
+
+（可选）格式化代码：
+
+```bash
+npm run format
+```
+
 </details>
 
 ## 部署方式
@@ -413,7 +430,8 @@ MeNav使用模块化配置方式，将配置分散到多个文件中，更易于
 * **创建配置目录**:
    - 在`config/user/`目录下创建您的自定义配置文件
    - 可以参考项目结构中的`config/_default/`目录结构
-   - 至少需要创建`site.yml`
+   - 至少需要创建`site.yml`（缺失时构建会直接报错退出，避免生成空白站点）
+   - 首次使用建议先完整复制 `config/_default/` 到 `config/user/`，再按需修改（因为配置采用“完全替换”策略，不会从默认配置补齐缺失项）
 
 ### 配置详解
 
@@ -745,6 +763,8 @@ MeNav支持从浏览器导入书签，快速批量添加网站链接，无需手
 
 </details>
 
+> 💡 *版本管理建议*：若你希望每次导入书签生成的 `bookmarks.yml` 内容保持确定性（避免因时间戳导致的无意义 diff），可在运行导入时设置环境变量：`MENAV_BOOKMARKS_DETERMINISTIC=1`。
+
 > 生成的配置可在`config/user/pages/bookmarks.yml`中查看和编辑
 
 ## 常见问题
diff --git a/package-lock.json b/package-lock.json
index 3f91664..f286b5e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,13 +1,13 @@
 {
   "name": "menav",
-  "version": "1.2.3",
+  "version": "1.3.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "menav",
-      "version": "1.2.3",
-      "license": "MIT",
+      "version": "1.3.0",
+      "license": "AGPL-3.0-only",
       "dependencies": {
         "ansi-regex": "^6.0.1",
         "ansi-styles": "^6.2.1",
@@ -15,11 +15,12 @@
         "color-name": "^2.0.0",
         "handlebars": "^4.7.8",
         "has-flag": "^5.0.1",
-        "js-yaml": "^4.1.0",
+        "js-yaml": "^4.1.1",
         "mime-db": "^1.52.0",
         "supports-color": "^9.4.0"
       },
       "devDependencies": {
+        "prettier": "^3.4.2",
         "serve": "^14.2.1"
       }
     },
@@ -646,9 +647,9 @@
       "license": "ISC"
     },
     "node_modules/js-yaml": {
-      "version": "4.1.0",
-      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-4.1.0.tgz",
-      "integrity": "sha512-wpxZs9NoxZaJESJGIZTyDEaYpl0FKSA+FB9aJiyemKhMwkxQg63h4T1KJgUGHpTqPDNRcmmYLugrRjJlBtWvRA==",
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-4.1.1.tgz",
+      "integrity": "sha512-qQKT4zQxXl8lLwBtHMWwaTcGfFOZviOJet3Oy/xmGk2gZH677CJM9EvtfdSkgWcATZhj/55JZ0rmy3myCT5lsA==",
       "license": "MIT",
       "dependencies": {
         "argparse": "^2.0.1"
@@ -821,6 +822,22 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/prettier": {
+      "version": "3.7.4",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.7.4.tgz",
+      "integrity": "sha512-v6UNi1+3hSlVvv8fSaoUbggEM5VErKmmpGA7Pl3HF8V6uKY7rvClBOJlH6yNwQtfTueNkGVpOv/mtWL9L4bgRA==",
+      "dev": true,
+      "license": "MIT",
+      "bin": {
+        "prettier": "bin/prettier.cjs"
+      },
+      "engines": {
+        "node": ">=14"
+      },
+      "funding": {
+        "url": "https://github.com/prettier/prettier?sponsor=1"
+      }
+    },
     "node_modules/punycode": {
       "version": "2.3.1",
       "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.3.1.tgz",
diff --git a/package.json b/package.json
index 0e5c5ad..d83bff6 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,12 @@
     "dev": "node src/generator.js && serve dist -l 5173",
     "clean": "node ./scripts/clean.js",
     "build": "npm run clean && npm run generate",
-    "import-bookmarks": "node src/bookmark-processor.js"
+    "import-bookmarks": "node src/bookmark-processor.js",
+    "test": "node --test test/*.js",
+    "lint": "node --check \"src/generator.js\" && node --check \"src/bookmark-processor.js\" && node --check \"src/script.js\"",
+    "format": "prettier --write \"src/**/*.js\" \"scripts/**/*.js\" \"test/**/*.js\" \".github/**/*.yml\" \"*.{md,json}\" \"config/**/*.md\" \"config/**/*.yml\"",
+    "format:check": "prettier --check \"src/**/*.js\" \"scripts/**/*.js\" \"test/**/*.js\" \".github/**/*.yml\" \"*.{md,json}\" \"config/**/*.md\" \"config/**/*.yml\"",
+    "check": "npm run lint && npm test && npm run build"
   },
   "keywords": [
     "navigation",
@@ -19,7 +24,7 @@
   "author": "Your Name",
   "license": "AGPL-3.0-only",
   "dependencies": {
-    "js-yaml": "^4.1.0",
+    "js-yaml": "^4.1.1",
     "handlebars": "^4.7.8",
     "ansi-regex": "^6.0.1",
     "ansi-styles": "^6.2.1",
@@ -30,6 +35,7 @@
     "mime-db": "^1.52.0"
   },
   "devDependencies": {
+    "prettier": "^3.4.2",
     "serve": "^14.2.1"
   }
 }
diff --git a/src/bookmark-processor.js b/src/bookmark-processor.js
index 178d3c6..37c4039 100644
--- a/src/bookmark-processor.js
+++ b/src/bookmark-processor.js
@@ -714,11 +714,15 @@ function generateBookmarksYaml(bookmarks) {
       quotingType: '"'
     });
     
-    // 添加注释
-    const yamlWithComment = 
+    // 添加注释（可选确定性输出，方便版本管理）
+    const deterministic = process.env.MENAV_BOOKMARKS_DETERMINISTIC === '1';
+    const timestampLine = deterministic
+      ? ''
+      : `# 由bookmark-processor.js生成于 ${new Date().toISOString()}\n`;
+
+    const yamlWithComment =
 `# 自动生成的书签配置文件
-# 由bookmark-processor.js生成于 ${new Date().toISOString()}
-# 若要更新，请将新的书签HTML文件放入bookmarks/目录
+${timestampLine}# 若要更新，请将新的书签HTML文件放入bookmarks/目录
 # 此文件使用模块化配置格式，位于config/user/pages/目录下
 
 ${yamlString}`;
@@ -914,4 +918,13 @@ if (require.main === module) {
     console.error('Unhandled error in bookmark processing:', err);
     process.exit(1);
   });
-} 
+}
+
+module.exports = {
+  ensureUserConfigInitialized,
+  ensureUserSiteYmlExists,
+  upsertBookmarksNavInSiteYml,
+  parseBookmarks,
+  generateBookmarksYaml,
+  updateNavigationWithBookmarks,
+};
diff --git a/src/generator.js b/src/generator.js
index a5603e7..59e021b 100644
--- a/src/generator.js
+++ b/src/generator.js
@@ -519,6 +519,19 @@ function loadConfig() {
 
   // 根据优先级顺序选择最高优先级的配置
   if (hasUserModularConfig) {
+    // 配置采用“完全替换”策略：一旦存在 config/user/，将不会回退到 config/_default/
+    if (!fs.existsSync('config/user/site.yml')) {
+      console.error('[ERROR] 检测到 config/user/ 目录，但缺少 config/user/site.yml。');
+      console.error('[ERROR] 由于配置采用“完全替换”策略，系统不会从 config/_default/ 补齐缺失配置。');
+      console.error('[ERROR] 解决方法：先完整复制 config/_default/ 到 config/user/，再按需修改。');
+      process.exit(1);
+    }
+
+    if (!fs.existsSync('config/user/pages')) {
+      console.warn('[WARN] 检测到 config/user/ 目录，但缺少 config/user/pages/。部分页面内容可能为空。');
+      console.warn('[WARN] 建议：复制 config/_default/pages/ 到 config/user/pages/，再按需修改。');
+    }
+
     // 1. 最高优先级: config/user/ 目录
     config = loadModularConfig('config/user');
   } else if (hasDefaultModularConfig) {
diff --git a/test/bookmark-processor.node-test.js b/test/bookmark-processor.node-test.js
new file mode 100644
index 0000000..c238fd1
--- /dev/null
+++ b/test/bookmark-processor.node-test.js
@@ -0,0 +1,125 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+const fs = require('node:fs');
+const path = require('node:path');
+const os = require('node:os');
+
+const {
+  ensureUserConfigInitialized,
+  ensureUserSiteYmlExists,
+  upsertBookmarksNavInSiteYml,
+  parseBookmarks,
+  generateBookmarksYaml,
+} = require('../src/bookmark-processor.js');
+
+function stripYamlComments(yamlText) {
+  return yamlText
+    .split(/\r?\n/)
+    .filter(line => !/^\s*#/.test(line))
+    .join('\n')
+    .trim();
+}
+
+test('parseBookmarks：解析书签栏、根目录书签与图标映射', () => {
+  const html = `
+<!DOCTYPE NETSCAPE-Bookmark-file-1>
+<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
+<TITLE>Bookmarks</TITLE>
+<H1>Bookmarks</H1>
+<DL><p>
+  <DT><H3 PERSONAL_TOOLBAR_FOLDER="true">书签栏</H3>
+  <DL><p>
+    <DT><A HREF="https://github.com/">GitHub</A>
+    <DT><H3>工具</H3>
+    <DL><p>
+      <DT><A HREF="https://www.google.com/">Google</A>
+    </DL><p>
+  </DL><p>
+</DL><p>
+`;
+
+  const bookmarks = parseBookmarks(html);
+  assert.ok(bookmarks);
+  assert.ok(Array.isArray(bookmarks.categories));
+  assert.ok(bookmarks.categories.length >= 2);
+
+  // 根目录书签应该插入到首位
+  assert.equal(bookmarks.categories[0].name, '根目录书签');
+  assert.ok(Array.isArray(bookmarks.categories[0].sites));
+  assert.equal(bookmarks.categories[0].sites[0].name, 'GitHub');
+  assert.equal(bookmarks.categories[0].sites[0].icon, 'fab fa-github');
+
+  const tools = bookmarks.categories.find(c => c.name === '工具');
+  assert.ok(tools, '应解析出“工具”分类');
+  assert.ok(Array.isArray(tools.sites));
+  assert.equal(tools.sites[0].name, 'Google');
+});
+
+test('generateBookmarksYaml：生成 YAML 且可被解析', () => {
+  const bookmarks = {
+    categories: [
+      {
+        name: '示例分类',
+        icon: 'fas fa-folder',
+        sites: [{ name: 'Example', url: 'https://example.com', icon: 'fas fa-link', description: '' }],
+      },
+    ],
+  };
+
+  const yamlText = generateBookmarksYaml(bookmarks);
+  assert.ok(typeof yamlText === 'string');
+  assert.ok(yamlText.includes('# 自动生成的书签配置文件'));
+  assert.ok(yamlText.includes('categories:'));
+
+  const yaml = require('js-yaml');
+  const parsed = yaml.load(stripYamlComments(yamlText));
+  assert.equal(parsed.title, '我的书签');
+  assert.ok(Array.isArray(parsed.categories));
+  assert.equal(parsed.categories[0].name, '示例分类');
+});
+
+test('upsertBookmarksNavInSiteYml：无 navigation 时追加并幂等', () => {
+  const tmp = fs.mkdtempSync(path.join(os.tmpdir(), 'menav-test-'));
+  const filePath = path.join(tmp, 'site.yml');
+
+  fs.writeFileSync(
+    filePath,
+    `title: Test Site\n`,
+    'utf8',
+  );
+
+  const r1 = upsertBookmarksNavInSiteYml(filePath);
+  assert.equal(r1.updated, true);
+
+  const updated1 = fs.readFileSync(filePath, 'utf8');
+  assert.ok(updated1.includes('navigation:'));
+  assert.ok(updated1.includes('- name: 书签'));
+  assert.ok(updated1.includes('id: bookmarks'));
+
+  const r2 = upsertBookmarksNavInSiteYml(filePath);
+  assert.equal(r2.updated, false);
+  assert.equal(r2.reason, 'already_present');
+});
+
+test('ensureUserConfigInitialized/ensureUserSiteYmlExists：可在空目录初始化用户配置', () => {
+  const tmp = fs.mkdtempSync(path.join(os.tmpdir(), 'menav-test-'));
+  const originalCwd = process.cwd();
+  process.chdir(tmp);
+
+  try {
+    fs.mkdirSync('config/_default/pages', { recursive: true });
+    fs.writeFileSync('config/_default/site.yml', 'title: Default\n', 'utf8');
+    fs.writeFileSync('config/_default/pages/home.yml', 'categories: []\n', 'utf8');
+
+    const init = ensureUserConfigInitialized();
+    assert.equal(init.initialized, true);
+    assert.ok(fs.existsSync('config/user/site.yml'));
+    assert.ok(fs.existsSync('config/user/pages/home.yml'));
+
+    // 若 site.yml 已存在，应直接返回 true
+    assert.equal(ensureUserSiteYmlExists(), true);
+  } finally {
+    process.chdir(originalCwd);
+  }
+});
+