perf: 优化合图功能

package-lock.json

@@ -30,6 +30,7 @@
         "react-dropzone": "^14.3.5",
         "sharp": "^0.33.5",
         "tailwind-merge": "^2.6.0",
+        "upng-js": "^2.1.0",
         "zod": "^3.24.1",
         "zustand": "^5.0.2"
       },
@@ -8957,6 +8958,15 @@
         "browserslist": ">= 4.21.0"
       }
     },
+    "node_modules/upng-js": {
+      "version": "2.1.0",
+      "resolved": "https://mirrors.tencent.com/npm/upng-js/-/upng-js-2.1.0.tgz",
+      "integrity": "sha512-d3xzZzpMP64YkjP5pr8gNyvBt7dLk/uGI67EctzDuVp4lCZyVMo0aJO6l/VDlgbInJYDY6cnClLoBp29eKWI6g==",
+      "license": "MIT",
+      "dependencies": {
+        "pako": "^1.0.5"
+      }
+    },
     "node_modules/uri-js": {
       "version": "4.4.1",
       "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.4.1.tgz",