Remove useless electron & ionic

Add angular ionic

Add angular-electron

fix test on backend-typescript

Update dependencies on frontend-angular

Update Angular 20.3.2 & Angular CLI 20.3.3

Update Angular 20.3.1 & Angular CLI 20.3.2 on frontend-angular

Add rag-connector on frontend-angular-ai

Remove frontend-angular-examples

Improve Springboot

improve angular-ai projects

Improve backend-springboot

Improve frtonedn-angular-ai llm-connector

Rename detabase dir

Update README