feat(beast-mode): Final Beast Mode UI integration and backend enhancements

feat/fix: pragma chatbot, dialog ui, robust exports, bcrypt override

fix: Restore Auth UI, redirect flow, API bypassing, resolve missing ML paths, and add dummy fallbacks

Fix user not found auth bypass via DB auto-creation & UI redirect

feat: complete BYPASS_AUTH coverage for login and register endpoints

feat: implement optional BYPASS_AUTH mode for testing and rapid deployment

fix: resolve hash identification error and standardize guest login

chore: add detailed logging for login and registration failures

fix: make email lookup case-insensitive and fix login error messages

fix: improve JWT verification and handle 401 on frontend

fix: improve auth resilience and fallback to guest for missing users

feat: optimize for Hugging Face deployment, fix 401 resilience, and path robustness

Finalize Project Sambhav: Integrated Frontend, Enhanced Auth, Universal Document Analysis, and Detailed Documentation

Initial commit - Project Sambhav