Fix all SwiftLint violations across codebase

Resolves 130+ violations including deployment target checks, code style issues, and formatting inconsistencies. Adds SwiftLint disable comments for compiler-required availability checks while maintaining deployment target compliance.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Shared/Constants.swift

@@ -150,10 +150,8 @@ enum Constants {
         let iOS15 = [5]
         let iconName = "go\(type).\(interval)"
 
-        if #available(iOS 15, macOS 12, *) {
-            if iOS15.contains(interval) {
-                return iconName
-            }
+        if iOS15.contains(interval) {
+            return iconName
         }
 
         if allVersions.contains(interval) {