feat: add FastAPI proxy routes + @spaces.GPU server wrapper

fix: add @spaces.GPU placeholder for ZeroGPU compatibility

feat: hybrid Gradio + Node.js Transformers.js on ZeroGPU

feat: complete JS rewrite - Transformers.js + Node.js + Mission Barisal Checker

feat: replace with llama-cpp-python GGUF + Gradio UI + OpenAI-compatible API

Add application file