Rename iFeels to Feels across entire codebase

- Bundle IDs: com.tt.ifeel* → com.tt.feels*
- App Groups: group.com.tt.ifeel* → group.com.tt.feels*
- iCloud containers: iCloud.com.tt.ifeel* → iCloud.com.tt.feels*
- IAP product IDs: com.tt.ifeel.IAP.* → com.tt.feels.IAP.*
- URLs: ifeels.app → feels.app
- Logger subsystems and dispatch queues
- Product names and display names

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Shared/Services/ImageCache.swift

@@ -13,7 +13,7 @@ final class ImageCache {
     static let shared = ImageCache()
 
     private let cache = NSCache<NSString, UIImage>()
-    private let queue = DispatchQueue(label: "com.tt.ifeel.imagecache", qos: .userInitiated)
+    private let queue = DispatchQueue(label: "com.tt.feels.imagecache", qos: .userInitiated)
 
     private init() {
         // Configure cache limits