fix: build VS Code extension correctly from oc-dev

Run oc-dev with Node to avoid Bun setting NODE_ENV=development
Keep local VSIX install flow aligned with the working shell script

package.json

@@ -22,7 +22,7 @@
   "license": "MIT",
   "scripts": {
     "dev": "node ./scripts/dev-web-hmr.mjs",
-    "oc-dev": "bun scripts/oc-dev.mjs",
+    "oc-dev": "node scripts/oc-dev.mjs",
     "build": "bun run --filter '*' build",
     "build:web": "bun run --cwd packages/web build",
     "build:ui": "bun run --cwd packages/ui build",