Fix Hugging Face Space configuration and app setup

Rename project to "Smooth Paraphraser"

Fix tokenizer errors and restructure project for Space deployment

Fix tokenizer build errors by installing SentencePiece + tiktoken

Update: Polished Space with example usage in README

Fix: Added Hugging Face Space configuration block to README.md

Fix: Minimal Gradio setup (removed Docker/FastAPI config errors)

Refactor: Switched to pure Gradio app (no FastAPI/Docker). Added paraphraser UI + API support.

initial commit