xSearch for Safari

- Updated for the latest operating systems with improved compatibility and platform-specific refinements. - Improved tab switching with a smoother, more native navigation experience. - Fixed legacy navigation issues where engine rows could stop responding after rotating between landscape and portrait. - Refined sidebar layouts and navigation icons. - Updated list and split-view backgrounds for a cleaner, more seamless appearance. - Redesigned empty states and iCloud status views with modern action buttons. - Redesigned the Safari extension setup tutorial with clearer permission instructions, plus a new popup guide with usage examples. - Improved Safari extension setup links across iOS versions. - Added external links and Shortcuts for search, settings, engines, and Multisearch. - Added a more capable JSON editor search experience with a sticky search bar, improved navigation controls, better keyboard behavior, and improved iPad presentation. - Added a loading indicator when opening the JSON editor. - Added hardware keyboard shortcuts for quickly focusing search fields and adding search engines. - Expanded keyboard shortcuts for tabs and engine actions on iPhone and iPad. - Improved Shortcuts engine suggestions with correct ordering and clearer icons. - Added validation for Shortcut Prefix and Shortcut Bypass values, including clear alerts when multiple characters are entered or both shortcuts conflict, and fixed toggles remaining enabled when their key is empty. - Enhanced Multisearch UI and process workflow, with live shortcut synchronization when engines are updated. - Updated the preset search engine gallery, adding new popular engines and removing deprecated ones with updated favicons and URLs. - Improved engine detail previews and popover interactions across iPhone and iPad. - Improved engine editing with clearer icon validation, smoother focus, and reliable URL input. - Improved search performance and responsiveness when rapidly typing or clearing search queries, with smoother engine-list search states. - Improved Gallery and Multisearch loading performance. - Improved iCloud synchronization reliability and fixed profile-switching issues. - Added iCloud conflict resolution for JSON profiles, so you can choose which version to keep before editing. - Improved iCloud conflict handling during simultaneous refreshes and checks. - Improved iCloud reliability when profiles are temporarily unavailable, preserving local engines and automatically resuming sync when the profile returns. - Added clearer iCloud profile status and conflict feedback. - Fixed an issue where iCloud synchronization did not update automatically when enabling iCloud while the app was running. - Fixed toast and notification presentation issues for a more reliable feedback experience. - Resolved Share Extension settings observer issues for seamless background updates. - Improved Share Extension engine selection with clearer tap guidance, preserved custom ordering, and a notice for links that may open directly in other apps. - Added redesigned Share Extension empty states with an option to open xSearch. - Improved sharing and export feedback with clearer error messages and a more native sharing experience. - Fixed keyboard shortcut routing (Command + N) across tabs. - Improved custom domain validation and search compatibility in Safari. - Optimized keyboard behavior by disabling autocorrection for custom domains and preserving capitalization when renaming profiles. - Enhanced VoiceOver accessibility support across all screens and improved visual feedback for empty states. - Added better support for Reduce Motion across lists, animations, and notifications. - Improved accessibility labels for engine actions, profile actions, and editing controls. - Added under-the-hood performance, memory, and stability improvements.