fix(worker-hall): 优化抢单大厅两级分类联动体验并支持分类图片浏览器长效缓存

apps/backend/src/routes/files.ts

@@ -1,19 +1,49 @@
 import { Router } from 'express'
 
-import { getStoredFileObject } from '../services/file-storage/file-storage-service.js'
+import {
+  getStoredFileObject,
+  isPublicObjectKey,
+} from '../services/file-storage/file-storage-service.js'
 import { buildNotFoundPayload, sendRouteError } from '../utils/http.js'
 
 const router = Router()
 
 router.get('/object', async (req, res) => {
   try {
+    const rawKey = String(req.query.key || '').trim()
+    const isPublic = isPublicObjectKey(rawKey)
     const object = await getStoredFileObject(req.query.key, req.query.variant, {
       expires: req.query.expires,
       signature: req.query.signature,
     })
+
+    if (object.etag) {
+      res.setHeader('ETag', object.etag)
+      if (req.headers['if-none-match'] === object.etag) {
+        res.status(304).end()
+        return
+      }
+    }
+    if (object.lastModified) {
+      res.setHeader('Last-Modified', object.lastModified.toUTCString())
+      if (req.headers['if-modified-since']) {
+        const ifModifiedSince = new Date(req.headers['if-modified-since'])
+        if (!isNaN(ifModifiedSince.getTime()) && object.lastModified <= ifModifiedSince) {
+          res.status(304).end()
+          return
+        }
+      }
+    }
+
     res.setHeader('Content-Type', object.contentType || 'application/octet-stream')
-    res.setHeader('Cache-Control', 'private, max-age=300')
     res.setHeader('X-Content-Type-Options', 'nosniff')
+
+    if (isPublic) {
+      res.setHeader('Cache-Control', 'public, max-age=2592000, stale-while-revalidate=604800')
+    } else {
+      res.setHeader('Cache-Control', 'private, max-age=300')
+    }
+
     object.reader.on('error', (error) => {
       if (!res.headersSent) {
         sendRouteError(res, error, '读取文件失败', '[files/object]')

apps/backend/src/routes/worker/hall.ts

@@ -1,6 +1,7 @@
 import { Router } from 'express'
 
 import {
+  getWorkerHallCategories,
   getWorkerHallLeaderboard,
   grabWorkerHallOrder,
   joinWorkerSharingOrder,
@@ -11,6 +12,16 @@ import { createRouteHandler } from '../../utils/http.js'
 
 const router = Router()
 
+router.get(
+  '/hall/categories',
+  requireActiveWorker,
+  createRouteHandler((req) => getWorkerHallCategories(getRequiredWorkerSession(req)), {
+    successMessage: 'ok',
+    errorMessage: '读取抢单大厅分类失败',
+    scope: '[worker/hall/categories]',
+  }),
+)
+
 router.get(
   '/hall/orders',
   requireActiveWorker,