Big refactor

[shpaw415]

Summary by CodeRabbit

• New Features
  • Powerful database CLI: create, backup, restore, and merge with interactive prompts.
  • Session tools and pages to start/end/check sessions.
  • Database demo page (add/delete/query users).
  • Dynamic routing enhancements (slug routes) and redirect page.
  • Improved Image component (responsive srcset, blur placeholders, error states).
  • Right-side DevTools panel with width resize and WebSocket integration.
  • robots.txt handling and automatic HTML lang injection.
  • CSS Modules type generation and Tailwind plugin integration.
• Refactor
  • Faster, more reliable SSR/router pipeline and streamlined public API paths.
• Tests
  • Extensive database and head utilities test suites.
• Documentation
  • Public API guide and database pooling docs.