Description

Set up the application folder structure following Next.js 15 app router conventions.

Tasks

• Create folder structure (app/, components/, lib/, types/)
• Set up app router pages structure
• Create placeholder pages for main routes
• Add README files in key directories

Acceptance Criteria

• Folder structure matches Next.js 15 conventions
• Main routes have placeholder pages
• Clear organization for future development
• README files explain each directory's purpose

Technical Notes

• Follow Next.js app router best practices
• Create route structure: /, /g/[id], /create
• Add .gitkeep files for empty directories

Related TODO.md lines: 30-31