Fix: pin onnxruntime-web to 1.14.0 (exact version @xenova /transformers v2 expects)

Add onnxruntime-web as explicit dependency

Complete rewrite: use @xenova /transformers v2 which works out of box on Alpine

Fix: add onnxruntime-web explicitly, override only onnxruntime-node

Fix Alpine: exclude onnxruntime-node, force WASM backend only

Add package.json