more fixes and improvements

change-logs:

• revamped the configuration entirely and the way it handles reloads
• overhauled the entire GUI system with inline toggles, shift-click protection for lagback, and unified navigation
• added statistics dashboard and owner tools section with system health metrics
• added confirmation screens before destructive actions (mass disable, lagback toggle)
• reduced clicks to toggle a check's lagback from 6 to 2
• consolidated player selection into a single shared menu for logs and inspection
• standardized visual language across all menus (state indicators, colors, button lore)
• added home and close buttons to every menu
• eliminated menu-to-menu inventory recreation via shared border panes and cached navigation items
• fixed color constants where PRIMARY and ERROR were identical
• fixed SprintA blindness check (false positive — blindness does not block sprinting in 1.15+)
• fixed SimulationC swim-mode vertical prediction being entirely skipped
• replaced discrete velocity/teleport/damage grace stacking with CombinedMovementGrace capped accumulator
• replaced SimulationC hardcoded swim speed caps with drag-based horizontal prediction
• added UncertaintyHandler integration to SimulationA and SimulationC

new anti-cheat test server: modern.anticheat-test.com (not mine but a very well known server for testing anticheats)