docs(vibe-stories): update story content and add new story

- Replace placeholder stories with real user stories featuring a rural teacher, a college student, a high school teacher, and a truck driver
- Add new story 4 about a truck driver building an overseas tool site
- Update sidebar navigation, homepage feature text, and cover images
- Fix visual styling and clipping in the VibeStories component
- Update sitemap with new story and modified timestamps

docs/.vitepress/theme/components/HomeFeatures.vue

@@ -101,11 +101,12 @@ const i18n = {
     },
     stories: {
       cat: 'Vibe Stories',
-      title: '看见每一个<br><span class="highlight">闪光的你。</span>',
-      sub: '在这里，发现大家如何使用 AI 创造属于自己的作品。',
-      s1: { title: '我的第一个全栈项目', author: 'Sanbu' },
-      s2: { title: '从产品经理到独立开发者', author: 'Alice' },
-      s3: { title: '用 AI 提效 10 倍', author: 'Bob' }
+      title: '手比脑子快的人，<br><span class="highlight">都在这了。</span>',
+      sub: '未完待续的故事，等你带作品来续写。加入他们。',
+      s1: { title: '放弃月入过万，他在农村小学带孩子们“用AI赶苍蝇”', author: '小学老师小浩' },
+      s2: { title: '期末考试周，我偷偷用AI造了个“校园闲鱼”', author: '一位大二学生' },
+      s3: { title: '我给每个学生，做了一个不会累的“学霸同桌”', author: '高中信息技术老师' },
+      s4: { title: '48岁货车司机，熬了几个通宵，硬是用AI磕出一个出海工具站', author: '货车司机老黄' }
     },
     stage1: {
       cat: 'Stage 1 · 零基础入门',
@@ -2560,6 +2561,14 @@ const appendixCards = [
   background: transparent;
 }
 
+#vibe-stories,
+#vibe-stories:focus,
+#vibe-stories:focus-visible,
+#vibe-stories:target {
+  outline: none !important;
+  box-shadow: none !important;
+}
+
 a {
   text-decoration: none;
   color: inherit;