Responsive layout patch

Improving README

Responsive Layout Fix patch

Navbar Theme toggle button fix

auth flow fix

Dockerfile change for SQL Lite Disk to be written from PaaS

I fixed it in code so Render-style string env values work

Persist conversation titles in the chatsidebar

Adding logo at README

ERD

Remove the GITHUB WORD

conversation_id now flows through chat sends

Adding Oauth Providerr

When the SSE stream endpoint was called without a conversation_id, it tried to blindly INSERT a new empty conversation, violating the partial unique index.

+ New chat creates and selects a new conversation.