Fix SwiftLint and SwiftFormat violations

- Run SwiftFormat to fix indentation, spacing, and formatting issues
- Replace CGFloat with Double and NSRect with CGRect per style guide
- Remove redundant .center alignment specifications
- Remove unnecessary @available checks for satisfied deployment targets
- Fix closure brace indentation for consistency
- Disable closure_end_indentation rule to resolve SwiftFormat conflict

All linting checks now pass with zero errors and warnings.

Model/NavigationModel.swift

@@ -318,7 +318,7 @@ final class NavigationModel: ObservableObject {
     func multipleTapHandler() {
         switch tabSelection {
         case .search:
-            self.search.focused = true
+            search.focused = true
         default:
             print("not implemented")
         }