MinePanel v1.0.1

Major Architecture Update

• Extracted all UI files from embedded Java strings
• Moved HTML, CSS, and JavaScript into standalone resource files
• Removed around 900 lines from `WebServer.java`
• Improved maintainability and frontend development workflow

Security & Authentication

• Added username/password login
• Added BCrypt password hashing
• Added UUID v4 session tokens
• Added HttpOnly cookie-based sessions
• Added 5-minute inactivity timeout
• Added forced password change for the default admin account
• Added logout session cleanup

UI Improvements

• Added Light/Dark theme toggle
• Added persistent theme preference
• Added fixed sidebar layout
• Improved mobile layout
• Added login loading state

Compatibility

• Token lookup now supports both cookie-based sessions and `?token=` query parameter for backward compatibility