修改架构，移动端优先。

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server/articles.js

@@ -0,0 +1,49 @@
+// 从 content/articles/*.md 读取文章列表和详情
+import fs from 'node:fs'
+import path from 'node:path'
+import matter from 'gray-matter'
+import { marked } from 'marked'
+
+const DIR = path.join(process.cwd(), 'content', 'articles')
+
+function readAll() {
+  if (!fs.existsSync(DIR)) return []
+  return fs.readdirSync(DIR)
+    .filter((f) => f.endsWith('.md'))
+    .map((fileName) => {
+      const fullPath = path.join(DIR, fileName)
+      const raw = fs.readFileSync(fullPath, 'utf8')
+      const { data, content } = matter(raw)
+      const slug = fileName.replace(/\.md$/, '')
+      const dateMatch = fileName.match(/^(\d{4}-\d{2}-\d{2})-/)
+      const date = dateMatch ? dateMatch[1] : ''
+      return {
+        slug,
+        date,
+        title: data.title || slug.replace(/^\d{4}-\d{2}-\d{2}-/, ''),
+        excerpt: content.replace(/\s+/g, ' ').trim().slice(0, 150) + (content.length > 150 ? '...' : ''),
+      }
+    })
+    .sort((a, b) => (a.date < b.date ? 1 : -1))
+}
+
+export function listArticles() {
+  return readAll().map(({ slug, title, date, excerpt }) => ({ slug, title, date, excerpt }))
+}
+
+export function getArticle(slug) {
+  // 防止路径穿越
+  if (slug.includes('/') || slug.includes('\\') || slug.includes('..')) return null
+  const fullPath = path.join(DIR, slug + '.md')
+  if (!fs.existsSync(fullPath)) return null
+  const raw = fs.readFileSync(fullPath, 'utf8')
+  const { data, content } = matter(raw)
+  const dateMatch = slug.match(/^(\d{4}-\d{2}-\d{2})-/)
+  const date = dateMatch ? dateMatch[1] : ''
+  return {
+    slug,
+    date,
+    title: data.title || slug.replace(/^\d{4}-\d{2}-\d{2}-/, ''),
+    contentHtml: marked.parse(content),
+  }
+}