fix: resolution of critical blockers (P0/P1/P2 fixes) - async Redis, atomic credit updates, schema compatibility, task event loop safety, rate limits, timezone datetimes

fix: dynamic code audit fallback based on scanned project files

fix: resolve tab switch streaming loop and dynamic fallback design generation

Implement OpenRouter API integration and Redis event caching/replay to fix stuck streams on tab switch

Fix auto-login, SSE streams, LLM timeouts, and frontend cancellation

fix: update LLM model names to active NVIDIA catalog and add worker thread signal fixes

Fix python f-string curly brace syntax error in ai.py

Initialize Archvise API backend for Hugging Face Spaces