init: DPDK → DPU learning blog (VitePress)

- VitePress static site for rendering all markdown documents
- Auto-discovers .md files from dpdk-roadmap-v3 and dpdk-study-kb
- Features: full-text search, dark mode, responsive design
- Pages: roadmap, notes (Phase 0-3), product docs, knowledge base

index.md

@@ -0,0 +1,43 @@
+---
+layout: home
+
+hero:
+  name: "DPDK → DPU"
+  text: "学习笔记与开发日志"
+  tagline: 从零到 DPU 架构师 — 18 个月系统学习路线
+  actions:
+    - theme: brand
+      text: 开始学习
+      link: /roadmap
+    - theme: alt
+      text: 学习笔记
+      link: /notes/
+
+features:
+  - title: 📚 系统学习路线
+    details: 546 天 DPDK 到 DPU 完整路线图，涵盖网卡驱动、协议栈、SAI 适配、DPU 架构设计
+  - title: 🏗️ 产品化实践
+    details: uNOS 用户态网络操作系统 + 家庭网关网络加速器，从设计规格到硬件 BOM
+  - title: ✍️ 每日笔记
+    details: Phase 0-3 逐日学习记录，PCIe 拓扑、内核协议栈、RCU、DPDK 源码分析
+  - title: 🔧 实战代码
+    details: MPSC 无锁队列、dpdk-ws-client、libmtcp-v3、SAI-DPDK 适配器、Ring Benchmark
+---
+
+## 最近更新
+
+### 学习笔记
+
+- [Day001: PCIe 拓扑深度分析 (Jul 21, 2026)](/notes/week1/day001-pcie-topology)
+- [Day04: RCU 与 Lock-free 编程](/notes/phase0/day04-rcu-lockfree)
+- [Day03: 内核内存管理](/notes/phase0/day03-kernel-memory)
+- [Day02: 内核收包路径分析](/notes/phase0/day02-kernel-rx-path)
+- [Day01: PCIe 拓扑 + 讲座笔记](/notes/phase0/day01-pcie-topology)
+
+### 最新知识库
+
+- [2026-08 知识更新](/kb/2026-08)
+
+---
+
+*本站基于 [VitePress](https://vitepress.dev) 构建，所有 .md 文档均可直接渲染。*