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/SharedMoodIntent.swift

@@ -72,7 +72,7 @@ extension VoteMoodIntent: ForegroundContinuableIntent {}
 
 #if WIDGET_EXTENSION
 enum WidgetMoodSaver {
-    private static let logger = Logger(subsystem: "com.tt.ifeel.widget", category: "WidgetMoodSaver")
+    private static let logger = Logger(subsystem: "com.tt.feels.widget", category: "WidgetMoodSaver")
 
     @MainActor
     static func save(mood: Mood, date: Date) {