feat: 首页由 navigation 首项决定

- 移除 navigation.active 配置项，默认页以 navigation[0] 为准（生成端/前端一致）
- 注入 homePageId；首页渲染用 profile.title/profile.subtitle 覆盖 title/subtitle
- 模板按 homePageId 切换首页/非首页标题 DOM 与 data-editable，避免样式错位
- 更新默认配置与文档；书签导入不再写入 active 字段
- 新增/更新单测覆盖首页规则与 profile 覆盖

BREAKING CHANGE: 不再支持 navigation[].active；通过调整 navigation 顺序设置默认页/首页

test/home-page-profile-override.node-test.js

@@ -0,0 +1,55 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+const path = require('node:path');
+
+const { loadHandlebarsTemplates, generateAllPagesHTML } = require('../src/generator.js');
+
+test('首页（navigation 第一项）应使用 profile 覆盖 title/subtitle 显示', () => {
+  const originalCwd = process.cwd();
+  process.chdir(path.join(__dirname, '..'));
+
+  try {
+    loadHandlebarsTemplates();
+
+    const config = {
+      site: { title: 'Test Site', description: '', author: '', favicon: '', logo_text: 'Test' },
+      profile: { title: 'PROFILE_TITLE', subtitle: 'PROFILE_SUBTITLE' },
+      social: [],
+      navigation: [
+        { id: 'bookmarks', name: '书签', icon: 'fas fa-bookmark' },
+        { id: 'home', name: '首页', icon: 'fas fa-home' },
+        { id: 'projects', name: '项目', icon: 'fas fa-project-diagram' },
+      ],
+      bookmarks: { title: '书签页标题', subtitle: '书签页副标题', template: 'bookmarks', categories: [] },
+      home: { title: 'HOME_PAGE_TITLE', subtitle: 'HOME_PAGE_SUBTITLE', template: 'home', categories: [] },
+      projects: { title: '项目页标题', subtitle: '项目页副标题', template: 'projects', categories: [] },
+    };
+
+    const pages = generateAllPagesHTML(config);
+
+    assert.ok(typeof pages.bookmarks === 'string' && pages.bookmarks.length > 0);
+    assert.ok(pages.bookmarks.includes('PROFILE_TITLE'));
+    assert.ok(pages.bookmarks.includes('PROFILE_SUBTITLE'));
+    assert.ok(pages.bookmarks.includes('data-editable="profile-title"'));
+    assert.ok(pages.bookmarks.includes('data-editable="profile-subtitle"'));
+    assert.ok(pages.bookmarks.includes('<h3'));
+    assert.ok(!pages.bookmarks.includes('书签页标题'));
+    assert.ok(!pages.bookmarks.includes('书签页副标题'));
+    assert.ok(!pages.bookmarks.includes('data-editable="page-title"'));
+
+    assert.ok(typeof pages.home === 'string' && pages.home.length > 0);
+    assert.ok(pages.home.includes('HOME_PAGE_TITLE'));
+    assert.ok(pages.home.includes('HOME_PAGE_SUBTITLE'));
+    assert.ok(pages.home.includes('data-editable="page-title"'));
+    assert.ok(pages.home.includes('data-editable="page-subtitle"'));
+    assert.ok(pages.home.includes('<p class="subtitle"'));
+    assert.ok(!pages.home.includes('PROFILE_TITLE'));
+
+    assert.ok(typeof pages.projects === 'string' && pages.projects.length > 0);
+    assert.ok(pages.projects.includes('项目页标题'));
+    assert.ok(pages.projects.includes('项目页副标题'));
+    assert.ok(pages.projects.includes('<p class="subtitle"'));
+  } finally {
+    process.chdir(originalCwd);
+  }
+});