operational fixes

package-lock.json

@@ -16,6 +16,7 @@
         "express-session": "^1.18.0",
         "multer": "^1.4.5-lts.1",
         "occt-import-js": "^0.0.23",
+        "pngjs": "^6.0.0",
         "slugify": "^1.6.6",
         "three": "^0.184.0"
       },
@@ -27,6 +28,7 @@
         "@types/express-session": "^1.18.0",
         "@types/multer": "^1.4.11",
         "@types/node": "^22.0.0",
+        "@types/pngjs": "^6.0.5",
         "@types/three": "^0.184.0",
         "autoprefixer": "^10.4.19",
         "concurrently": "^8.2.2",
@@ -1096,6 +1098,16 @@
         "undici-types": "~6.21.0"
       }
     },
+    "node_modules/@types/pngjs": {
+      "version": "6.0.5",
+      "resolved": "https://registry.npmjs.org/@types/pngjs/-/pngjs-6.0.5.tgz",
+      "integrity": "sha512-0k5eKfrA83JOZPppLtS2C7OUtyNAl2wKNxfyYl9Q5g9lPkgBl/9hNyAu6HuEH2J4XmIv2znEpkDd0SaZVxW6iQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
     "node_modules/@types/qs": {
       "version": "6.15.0",
       "resolved": "https://registry.npmjs.org/@types/qs/-/qs-6.15.0.tgz",
@@ -3035,6 +3047,15 @@
         "node": ">= 6"
       }
     },
+    "node_modules/pngjs": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/pngjs/-/pngjs-6.0.0.tgz",
+      "integrity": "sha512-TRzzuFRRmEoSW/p1KVAmiOgPco2Irlah+bGFCeNfJXxxYGwSw7YwAOAcd7X28K/m5bjBWKsC29KyoMfHbypayg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=12.13.0"
+      }
+    },
     "node_modules/postcss": {
       "version": "8.5.10",
       "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.10.tgz",