初始提交：时之刃的小站

基于 VermilionVoid（朱墨留白）主题的个人博客。
- 站点配置集中在 src/data/site.ts 与 src/data/profile.ts
- 30 篇文章、8 条偶得、相册
- 评论使用自托管 twikoo
- 部署走 deploy.sh（rsync 到树莓派 + 云服务器）

src/lib/posts.ts

@@ -0,0 +1,99 @@
+import { getCollection, type CollectionEntry } from "astro:content"
+import readingTime from "reading-time"
+
+export type PostEntry = CollectionEntry<"posts">
+export type SidebarCategory = { id: string; name: string; count: number }
+
+const stripMarkdown = (input: string) => {
+  return input
+    .replace(/```[\s\S]*?```/g, " ")
+    .replace(/`[^`]*`/g, " ")
+    .replace(/!\[[^\]]*\]\([^)]+\)/g, " ")
+    .replace(/\[[^\]]*\]\([^)]+\)/g, "$1")
+    .replace(/[#>*_~]/g, " ")
+    .replace(/\s+/g, " ")
+    .trim()
+}
+
+const formatDate = (date?: Date) => {
+  if (!date) return ""
+  return date.toISOString().slice(0, 10)
+}
+
+export async function getSortedPosts(ignorePinned = false): Promise<PostEntry[]> {
+  const allPosts = await getCollection("posts", (post: PostEntry) => {
+    return import.meta.env.PROD ? post.data.draft !== true : true
+  })
+
+  const sorted = allPosts.sort((a: PostEntry, b: PostEntry) => {
+    if (!ignorePinned) {
+      if (a.data.pinned && !b.data.pinned) return -1
+      if (!a.data.pinned && b.data.pinned) return 1
+    }
+    const dateA = new Date(a.data.published)
+    const dateB = new Date(b.data.published)
+    return dateA > dateB ? -1 : 1
+  })
+
+  return sorted
+}
+
+export async function getPostsWithNav(): Promise<PostEntry[]> {
+  const sorted = await getSortedPosts()
+  for (let i = 1; i < sorted.length; i += 1) {
+    sorted[i].data.nextSlug = sorted[i - 1].slug
+    sorted[i].data.nextTitle = sorted[i - 1].data.title
+  }
+  for (let i = 0; i < sorted.length - 1; i += 1) {
+    sorted[i].data.prevSlug = sorted[i + 1].slug
+    sorted[i].data.prevTitle = sorted[i + 1].data.title
+  }
+  return sorted
+}
+
+export const toPostMeta = (post: PostEntry) => {
+  const body = typeof post.body === "string" ? post.body : String(post.body || "")
+  const stats = readingTime(body)
+  const words = stats.words
+  const minutes = Math.max(1, Math.round(stats.minutes))
+  const excerptSource = post.data.description?.trim() || ""
+  const fallbackExcerpt = stripMarkdown(body).slice(0, 140)
+  const excerpt = excerptSource.length > 0 ? excerptSource : fallbackExcerpt
+  const tags = post.data.tags?.length ? post.data.tags : []
+  const category = (post.data.category ?? "").toString().trim() || "未分类"
+
+  return {
+    slug: post.slug,
+    title: post.data.title,
+    excerpt,
+    category,
+    categoryLabel: category,
+    tags,
+    date: formatDate(post.data.published),
+    wordCount: words,
+    readTime: `${minutes} 分钟`,
+    image: post.data.image || undefined,
+    pinned: post.data.pinned ?? false,
+  }
+}
+
+export const buildSidebarMeta = (articles: { category: string; categoryLabel: string; tags: string[] }[]) => {
+  const counts = new Map<string, SidebarCategory>()
+  articles.forEach((article) => {
+    if (!counts.has(article.category)) {
+      counts.set(article.category, { id: article.category, name: article.categoryLabel, count: 0 })
+    }
+    counts.get(article.category)!.count += 1
+  })
+
+  const categories = [
+    { id: "all", name: "全部", count: articles.length },
+    ...Array.from(counts.values()).sort((a, b) => a.name.localeCompare(b.name)),
+  ]
+
+  const tags = Array.from(new Set(articles.flatMap((article) => article.tags || []))).sort((a, b) =>
+    a.localeCompare(b),
+  )
+
+  return { categories, tags }
+}