Fix Docker image bloat: exclude local venvs from build context, move transformers.js to devDependencies.

package.json

@@ -10,13 +10,13 @@
     "start": "NODE_ENV=production bun src/index.ts"
   },
   "dependencies": {
-    "@huggingface/transformers": "^4.2.0",
     "passport": "^0.7.0",
     "passport-local": "^1.0.0",
     "react": "^19",
     "react-dom": "^19"
   },
   "devDependencies": {
+    "@huggingface/transformers": "^4.2.0",
     "@types/bun": "latest",
     "@types/passport": "^1.0.17",
     "@types/passport-local": "^1.0.38",