fix(security): resolve critical vulnerability in form-data dependency

- Add npm overrides to force form-data version 4.0.4 or higher
- Fixes GitHub security advisory GHSA-fjxv-7rqg-78g4
- Vulnerability was in transitive dependency via TensorFlow.js
- No functionality changes, all tests passing

package.json

@@ -48,6 +48,9 @@
   "engines": {
     "node": ">=24.4.0"
   },
+  "overrides": {
+    "form-data": "^4.0.4"
+  },
   "scripts": {
     "prebuild": "echo 'Prebuild step - no version generation needed'",
     "build": "BUILD_TYPE=unified rollup -c rollup.config.js",