add missing part of app.py

fix readme error due to short description length

add 4 new models

fix error : ValueError: Conversation roles must alternate user/assistant/user/assistant

upgrade llamacpp version

fault-free model loading

add storage indicator

improve model management

improve storage management

fix yaml error

provide more models, secure memory usage

increase context length to 2048

update readme for 7b

switch to 7b model

switch to 3b q2 model

Update README.md

adjust thread numbers

switch to 1.5b

fix model id

Add app.py & requirements.txt

initial commit