Add options to insert custom HTML content in below location: 1. Session selection page <img width="488" alt="Image" src="https://github.com/user-attachments/assets/615ae8eb-beb6-4204-977a-c63b68ce1c84" /> 2. Bottom of side bar: <img width="281" alt="Image" src="https://github.com/user-attachments/assets/ecfe6661-33cc-4de0-8c64-c44a8556cd7e" />