diff --git a/infra/deploy/build.sh b/infra/deploy/build.sh
index ec364f8..33c07d3 100755
--- a/infra/deploy/build.sh
+++ b/infra/deploy/build.sh
@@ -28,6 +28,7 @@ pnpm astro build
 # 存在性守卫：新文件未推送到 main 前构建仓无此脚本，绝不让发布链因车道在途文件断掉
 [ -f scripts/build-perf/subset-font-css.mjs ] && node scripts/build-perf/subset-font-css.mjs dist || echo "[build] subset 脚本未就绪，跳过"
 # 首页阻塞 CSS 内联（车道 D）：守卫先行同上——脚本未到 main 前绝不炸链
+[ -f scripts/build-perf/gen-sw-precache.mjs ] && node scripts/build-perf/gen-sw-precache.mjs dist || echo "[build] sw-precache 生成器未就绪，跳过"
 [ -f scripts/build-perf/inline-home-css.mjs ] && node scripts/build-perf/inline-home-css.mjs || echo "[build] inline-home 脚本未就绪，跳过"
 
 echo "[build] rsync -> $STAGING"
diff --git a/public/admin/config.yml b/public/admin/config.yml
index b41d6e2..2ae6b37 100644
--- a/public/admin/config.yml
+++ b/public/admin/config.yml
@@ -16,6 +16,22 @@ output:
   omit_empty_optional_fields: true
 
 collections:
+  # 瞬间：随手发（text/image 至少其一——Sveltia 无法表达条件必填，两者都设可选，
+  # 保存前自查；pubDate 必填）。图片走图库媒体库（content/photos 同源可复用）
+  - name: moments
+    label: 瞬间
+    folder: content/moments
+    create: true
+    slug: '{{year}}-{{month}}-{{day}}-{{slug}}'
+    summary: '{{fields.pubDate}} · {{fields.text}}'
+    fields:
+      - { label: 时间, name: pubDate, widget: datetime, date_format: 'YYYY-MM-DD', time_format: false, format: 'YYYY-MM-DD' }
+      - { label: 文字, name: text, widget: text, required: false, hint: '一句话（与图片至少填一项）' }
+      - { label: 图片, name: image, widget: image, required: false, hint: '与文字至少填一项；建议先压缩' }
+      - label: 标签
+        name: tags
+        widget: list
+        required: false
   - name: photos
     label: 图库照片
     folder: content/photos
diff --git a/public/sw.js b/public/sw.js
index acfa60f..de0c8f0 100644
--- a/public/sw.js
+++ b/public/sw.js
@@ -10,12 +10,15 @@
 const VERSION = 'w4x-v2';
 // install 预缓存核心路由（SSG 全量 ~30 页 HTML，<1MB，换来全站离线可读；
 // 列表由构建产物路由手工维护，新增顶层页时补一行）
+// PRECACHE:AUTO-BEGIN 以下为兜底清单——构建期由 scripts/build-perf/gen-sw-precache.mjs
+// 按产物自动重写（规则：顶层+en 轨路由，深度≤1 段；/admin 永不预缓存）
 const PRECACHE = [
   '/', '/archives/', '/gallery/', '/moments/', '/books/', '/opensource/',
   '/about/', '/terminal/',
   '/en/', '/en/archives/', '/en/gallery/', '/en/moments/', '/en/books/',
   '/en/opensource/', '/en/about/', '/en/terminal/',
 ];
+// PRECACHE:AUTO-END
 const IMMUTABLE = [
   /\/_astro\//,                 // 构建产物（文件名带哈希）
   /\/fonts?\//,                 // 字体切片（fontsource，内容不变）
diff --git a/scripts/build-perf/gen-sw-precache.mjs b/scripts/build-perf/gen-sw-precache.mjs
new file mode 100644
index 0000000..f1a0f19
--- /dev/null
+++ b/scripts/build-perf/gen-sw-precache.mjs
@@ -0,0 +1,40 @@
+/**
+ * SW PRECACHE 自动生成：post-build 按 dist 产物推导路由清单，重写 dist/sw.js
+ * 兜底段（AUTO-BEGIN/END 标记之间）。规则：顶层路由 + /en/ 轨（路径段 ≤1，
+ * 排除 /en 自身段计数），排除 /admin（CMS 非离线内容）。新增顶层页自动入列——
+ * 根治手工清单漏页（Phase 5e 维护债）。
+ */
+import { readdirSync, readFileSync, writeFileSync, statSync, existsSync } from 'node:fs';
+import { join } from 'node:path';
+
+const dist = process.argv[2] ?? 'dist';
+const swPath = join(dist, 'sw.js');
+const routes = [];
+
+// dist 下所有 index.html → 站点路由（目录名映射）
+function walk(dir, prefix) {
+  for (const name of readdirSync(dir)) {
+    const full = join(dir, name);
+    if (!statSync(full).isDirectory()) continue;
+    if (name === 'admin') continue; // CMS 不进离线包
+    walk(full, `${prefix}/${name}`);
+  }
+  if (prefix && existsSync(join(dir, 'index.html'))) {
+    const segs = prefix.replace(/^\/en(?=\/|$)/, '').split('/').filter(Boolean);
+    if (segs.length <= 1) routes.push(prefix.endsWith('/') ? prefix : `${prefix}/`);
+  }
+}
+
+walk(dist, '');
+
+routes.sort();
+const sw = readFileSync(swPath, 'utf-8');
+const re = /(\/\/ PRECACHE:AUTO-BEGIN[\s\S]*?const PRECACHE = \[)[\s\S]*?(\];\n\/\/ PRECACHE:AUTO-END)/;
+if (!re.test(sw)) {
+  console.error('[gen-sw-precache] sw.js 缺少 AUTO 标记，跳过（保持兜底清单）');
+  process.exit(0);
+}
+const list = routes.map((r) => `  '${r}',`).join('\n');
+const next = sw.replace(re, `$1\n${list}\n$2`);
+writeFileSync(swPath, next);
+console.log(`[gen-sw-precache] ${routes.length} 路由入预缓存: ${routes.slice(0, 4).join(' ')}${routes.length > 4 ? ' …' : ''}`);