docs: Restructure Project Documentation, Improve Readme, Establish Contribution guideline, Model Wiki

[Aeastr]

This PR completely restructures the project documentation, adds comprehensive contribution guidelines, and establishes a proper wiki organization for better developer experience.

Major Changes

🆕 New Documentation Structure

• CONTRIBUTING.md - Comprehensive contribution guidelines with development setup, coding standards, and PR process
• CODE_OF_CONDUCT.md - Community guidelines and standards
• wiki/ - Organized documentation hub replacing scattered docs

📝 README Improvements

• Centered header with logo and badges for professional appearance
• Streamlined content - moved detailed information to appropriate locations
• Modern badges using badgen.net for requirements (macOS, Xcode, Swift, Homebrew)
• Collapsible roadmap to reduce visual clutter
• Clear navigation to contributing guidelines and wiki

🏗️ Wiki Organization

• Home.md - Welcoming introduction explaining project and navigation
• Organized sidebar with logical categorization:
  • 🚀 Getting Started
  • 📦 Deployment & Updates
  • 📊 Data & Storage
  • 🆘 Help & Support
• Focused content - each page serves a specific purpose

🔧 Content Reorganization

• Development details moved from README to CONTRIBUTING.md
• Release process split between contributor guide (how to create) and wiki (how it works)
• Troubleshooting moved to dedicated wiki page
• Security information consolidated in SECURITY.md

Key Features Added

For Contributors

• Complete setup workflow with prerequisites and commands
• Code style guidelines including modern Swift API preferences
• Compatibility requirements with guidance on OS version handling
• Testing and quality standards
• Release creation process with step-by-step instructions

For Users

• Clean, professional README that's easy to scan
• Clear requirement badges showing compatibility at a glance
• Organized wiki for detailed documentation
• Community guidelines for healthy participation

Technical Improvements

• Removed duplicate content between files
• Fixed broken links and outdated references
• Cleaned up template placeholders where appropriate
• Improved file organization with logical grouping
• Better cross-linking between related documentation

This establishes a solid foundation for community contributions and project growth.

[Copilot]

Pull Request Overview

This PR comprehensively restructures the project documentation to improve developer experience and community engagement. It centralizes scattered documentation into a logical wiki structure, streamlines the README for better accessibility, and establishes comprehensive contribution guidelines.

Key changes include:

• Creation of a structured wiki organization replacing the previous docs/ directory
• Addition of comprehensive contribution guidelines and community standards
• Modernization of the README with professional styling and clearer navigation

Reviewed Changes

Copilot reviewed 10 out of 13 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
wiki/_sidebar.md	New structured navigation sidebar for wiki organization
wiki/TROUBLESHOOTING.md	Consolidated troubleshooting guide moved from README
wiki/RELEASES_UPDATES.md	User-focused documentation on how the update system works
wiki/Home.md	Welcoming wiki homepage with project overview and navigation
wiki/DATA_PERSISTENCE.md	Technical documentation on SwiftData models and database management
docs/README.md	Removed old documentation directory structure
SECURITY.md	Updated key management documentation with clearer organization
README.md	Modernized with centered header, badges, and streamlined content
CONTRIBUTING.md	New comprehensive contributor guidelines with setup and processes
CODE_OF_CONDUCT.md	New community guidelines and standards

Comments suppressed due to low confidence (1)

README.md:1

• This bash command appears to be leftover from the old README content and should be removed since data persistence information has been moved to the wiki. This line doesn't appear to be part of any coherent section in the current README structure.

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[Aeastr]

Note on wiki structure: Ideally, this wiki/directory would be migrated to GitHub's built-in wiki feature for better discoverability and navigation. However, if that's not preferred, the content can easily be restructured back to a regular docs/ folder while maintaining all the organizational improvements. The current structure works well either way - just a consideration for future organization! 📚