fix: remove hardcoded Supabase credentials and use environment variables

feat: add remaining components and files

feat: add main page component

Update README.md

feat: add remaining playbook components

feat: add playbook components

feat: add drawer and glow card components

feat: add UI components

feat: add lib directory files

feat: add app directory files

feat: add core configuration and setup files

feat: add main application files

feat: add core configuration files

feat: add lib utilities and database functions

feat: add core application files and configuration