feat(appendix): 添加多个交互式演示组件，完善 AI/Infra 等章节内容

- 新增 Vibe Coding 全栈相关演示组件 (DeveloperSkillShift, FrontendTriad, BackendCore 等)
- 新增 RAG 相关组件 (RAGPipeline, ChunkingStrategy, Retrieval 等)
- 新增 Embedding & Vector 相关组件 (EmbeddingConcept, VectorSimilarity 等)
- 新增 AI Native App 设计组件 (AINativeArch, PromptDesign 等)
- 新增 Infrastructure as Code 组件 (IaCConcept, TerraformWorkflow 等)
- 新增 DNS & HTTPS 演示组件 (DnsResolution, HttpsHandshake 等)
- 新增 Model Finetuning 组件 (FinetuningPipeline 等)
- 更新多个章节的 markdown 内容，集成交互式演示

docs/.vitepress/config.mjs

@@ -573,6 +573,14 @@ export default defineConfig({
               text: '一、计算机是怎么回事',
               collapsed: false,
               items: [
+                {
+                  text: 'Vibe Coding 时代下的全栈开发',
+                  link: '/zh-cn/appendix/1-computer-fundamentals/vibe-coding-fullstack'
+                },
+                {
+                  text: '从按下电源到访问网站发生了什么',
+                  link: '/zh-cn/appendix/1-computer-fundamentals/power-on-to-web'
+                },
                 {
                   text: '从晶体管到 CPU',
                   link: '/zh-cn/appendix/1-computer-fundamentals/transistor-to-cpu'