Add TreeIcon and guestbook entry for nityeshaga#42

nityeshaga wants to merge 2 commits intoHeadstartAI:mainHeadstartAI/friday-tutorial:mainfrom

nityeshaga:feature/add-guestbook-entry-with-unique-svg-and-greeting-20250430-001616nityeshaga/friday-tutorial:feature/add-guestbook-entry-with-unique-svg-and-greeting-20250430-001616Copy head branch name to clipboard