Moved contribution-related docs to docs/contribution/, added new guides and templates for contributors, and updated references in docs/README.md to point to the new locations. This improves organization and provides clearer onboarding and standards for new contributors.
Removed outdated documentation files from docs/. Added new detailed guides to ct/ and install/ directories. Updated README.md to reflect new navigation, learning paths, and documentation structure. Relocated system guides and technical references to settings/ and install/ subdirectories for improved organization.
