feat: organize uploads by folder + cdn.hotelsync.ru active

- Upload route now accepts ?folder=categories|rooms|hotels|guests
- Files saved to /uploads/{folder}/uuid.ext, served at cdn.hotelsync.ru/{folder}/uuid.ext
- api.upload.photo() accepts optional folder param (default: 'rooms')
- RoomCategoriesPage passes folder='categories' on photo upload
- SSL cert issued and nginx config active for cdn.hotelsync.ru

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/src/routes/upload.ts

@@ -5,19 +5,28 @@ import { randomUUID } from 'crypto'
 import { pipeline } from 'stream/promises'
 
 const UPLOADS_DIR = process.env.UPLOADS_DIR ?? join(process.cwd(), 'uploads')
+const CDN_HOST    = process.env.CDN_HOST ?? 'cdn.hotelsync.ru'
 
-// Ensure uploads directory exists
-mkdirSync(UPLOADS_DIR, { recursive: true })
+const ALLOWED_FOLDERS = ['categories', 'rooms', 'hotels', 'guests'] as const
+type UploadFolder = typeof ALLOWED_FOLDERS[number]
 
 const ALLOWED_TYPES = ['image/jpeg', 'image/png', 'image/webp', 'image/gif']
 const MAX_SIZE = 10 * 1024 * 1024 // 10MB
 
+// Ensure base uploads directory exists
+mkdirSync(UPLOADS_DIR, { recursive: true })
+
 const upload: FastifyPluginAsync = async (fastify) => {
-  // POST /api/upload — upload a single image, returns { url }
+  // POST /api/upload?folder=categories — upload a single image, returns { url }
   fastify.post(
     '/api/upload',
     { onRequest: [fastify.authenticate] },
     async (request, reply) => {
+      const { folder } = request.query as { folder?: string }
+      const dir: UploadFolder = ALLOWED_FOLDERS.includes(folder as UploadFolder)
+        ? (folder as UploadFolder)
+        : 'rooms'
+
       const data = await request.file({ limits: { fileSize: MAX_SIZE } })
       if (!data) return reply.code(400).send({ error: 'No file provided' })
 
@@ -25,14 +34,16 @@ const upload: FastifyPluginAsync = async (fastify) => {
         return reply.code(400).send({ error: 'Only images allowed (jpg, png, webp, gif)' })
       }
 
-      const ext = extname(data.filename) || '.jpg'
+      const subDir = join(UPLOADS_DIR, dir)
+      mkdirSync(subDir, { recursive: true })
+
+      const ext      = extname(data.filename) || '.jpg'
       const filename = `${randomUUID()}${ext}`
-      const filepath = join(UPLOADS_DIR, filename)
+      const filepath = join(subDir, filename)
 
       await pipeline(data.file, createWriteStream(filepath))
 
-      const cdnHost = process.env.CDN_HOST ?? 'cdn.hotelsync.ru'
-      return { url: `https://${cdnHost}/${filename}` }
+      return { url: `https://${CDN_HOST}/${dir}/${filename}` }
     },
   )
 }