fix(config): strip whitespace and newlines from env variables

chore: configure Docker and proxy for HuggingFace Spaces deployment

fix: send eof event to frontend, inject new files into explorer

feat: Next.js frontend with live IDE, URL routing, retry logic, and step tracker

🧹 UI: Remove sidebar completely for cleaner interface

✨ Feature: Add Auto-Pull Request creation via GitHub API directly from Streamlit UI

🔧 Initial commit: FixFlow — Autonomous Bug Resolution Agent