Add screenshot commands, UI design, and update documentation with new fleeting notes

Add comprehensive command reference and metadata for new directory structure

Add detailed directory structure with subdirectories for organizing content by topic

Add new topic directories: Niche Topics, Interests, Creativity, Personal, Lifestyle, Collections, Media, Professional

Update web_ui_implementation_guide.md with Electron app clarification and add axios dependency to package.json

Add screenshot processing capability with OCR

Add MIT license and creator information

Add complete directory structure with placeholder files

Add Cursor initialization instructions and start command

Add installation steps and Cursor requirement to README

Initial commit of Second Brain