Merge remote-tracking branch 'origin/frontend-backend-connection' into frontend-backend-connection

Fixed bug with sidebar chat buttons

Merge branch 'frontend-backend-connection' of https://github.com/Multesh/The-Utlimate-RAG-frontend into frontend-backend-connection

some bug fixes

Placeholders added

File preview draft

Warnings added, something else

Merge remote-tracking branch 'origin/frontend-backend-connection' into frontend-backend-connection

Frontend/backend connection

Link replacing

Added file attachment showing when send message

Fixed bug with chat after refreshing the page

Chat creation fix

History of chats

frontend/backend connection

frontend/backend connection

Links to files added

Merge remote-tracking branch 'origin/general-branch' into general-branch

Bug fixes

Chat css correction, adding Message page

Style modifications

File Cards now are visible

Messenger logic added (for now, only with echo from system)