Update signing configuration to use 88oakapps.feels identifiers

- Update App Group IDs from group.com.tt.feels to group.com.88oakapps.feels
- Update iCloud container IDs from iCloud.com.tt.feels to iCloud.com.88oakapps.feels
- Sync code constants with entitlements across all targets (iOS, Watch, Widget)
- Update documentation in CLAUDE.md and PROJECT_OVERVIEW.md

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

Shared/Onboarding/views/OnboardingCustomizeOne.swift

@@ -45,20 +45,6 @@ struct OnboardingCustomizeOne: View {
                             .foregroundColor(.black)
                             .multilineTextAlignment(.leading)
                         IconPickerView()
-                        
-                        Text(String(localized: "onboarding_title_customize_one_section_two_title"))
-                            .font(.title3)
-                            .padding()
-                            .fixedSize(horizontal: false, vertical: true)
-                            .foregroundColor(.black)
-                        
-                        DayFilterPickerView()
-                        
-                        Text(String(localized: "onboarding_title_customize_one_section_two_note"))
-                            .font(.title3)
-                            .padding()
-                            .fixedSize(horizontal: false, vertical: true)
-                            .foregroundColor(.black)
                     }
                 }
                 .padding()