feat(blog): 英文标签、中文分类与列表阅读时间；Plume RAG 规则与提交脚本

docs/.vuepress/plugins/enrichBlogReadingTime.ts

@@ -0,0 +1,61 @@
+import fs from 'node:fs'
+import { pathToFileURL } from 'node:url'
+import type { App, PluginFunction } from 'vuepress'
+
+const HMR_TAIL = `if (import.meta.webpackHot) {
+  import.meta.webpackHot.accept()
+  if (__VUE_HMR_RUNTIME__.updateBlogPostData) {
+    __VUE_HMR_RUNTIME__.updateBlogPostData(blogPostData)
+  }
+}
+
+if (import.meta.hot) {
+  import.meta.hot.accept(({ blogPostData }) => {
+    __VUE_HMR_RUNTIME__.updateBlogPostData(blogPostData)
+  })
+}
+`
+
+async function enrichBlogData(app: App): Promise<void> {
+  const tempFile = app.dir.temp('internal/blogData.js')
+  if (!fs.existsSync(tempFile)) return
+
+  let blogPostData: Record<string, unknown>[]
+  try {
+    const url = `${pathToFileURL(tempFile).href}?t=${Date.now()}`
+    const mod = await import(url) as { blogPostData: Record<string, unknown>[] }
+    blogPostData = mod.blogPostData.map(p => ({ ...p }))
+  }
+  catch {
+    return
+  }
+
+  const byPath = new Map<string, { minutes: number; words: number }>()
+  for (const page of app.pages) {
+    const rt = page.data.readingTime as { minutes: number; words: number } | undefined
+    if (rt && typeof rt.words === 'number') byPath.set(page.path, rt)
+  }
+
+  for (const post of blogPostData) {
+    const rt = byPath.get(post.path as string)
+    if (rt) post.readingTime = rt
+  }
+
+  await app.writeTemp(
+    'internal/blogData.js',
+    `export const blogPostData = ${JSON.stringify(blogPostData)}\n\n${HMR_TAIL}\n`,
+  )
+}
+
+/**
+ * 在主题写入 blogData 之后，把各页的 readingTime（字数、分钟）并入博客列表数据，
+ * 供自定义 VPPostItem 在 /blog/ 列表展示。
+ */
+export function enrichBlogReadingTimePlugin(): PluginFunction {
+  return () => ({
+    name: 'enrich-blog-reading-time',
+    onPrepared: async (app: App) => {
+      await enrichBlogData(app)
+    },
+  })
+}