fix(ui+docker): persist wizard state across steps, disable webpack in nest-cli

fix(hf-spaces): use nest start (ts-node) instead of nest build to avoid webpack

fix(hf-spaces): build ever-jobs at image time, run compiled JS at startup

feat(hf-spaces): install Node.js, clone ever-jobs at build time, start NestJS before Streamlit

feat: add file-based logging system + Logs tab in UI

deploy: add Dockerfile for HF Spaces Docker SDK