Add XCUITest suite with 27 test files covering unmapped P1 test cases

- Add 8 new test files: HeaderMoodLogging (TC-002), DayViewGrouping (TC-019),
  AllDayViewStyles (TC-021), MonthViewInteraction (TC-030), PaywallGate
  (TC-032/039/048), AppTheme (TC-070), IconPack (TC-072),
  PremiumCustomization (TC-075)
- Add accessibility IDs for paywall overlays, icon packs, app theme cards,
  and day view section headers
- Add --expire-trial launch argument to UITestMode for paywall gate testing
- Update QA test plan spreadsheet with XCUITest names for 14 test cases
- Include existing test infrastructure: screen objects, helpers, base class,
  and 19 previously written test files

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Shared/Views/AddMoodHeaderView.swift

@@ -68,6 +68,7 @@ struct AddMoodHeaderView: View {
         }
         .cornerRadius(Constants.viewsCornerRaidus, corners: [.topLeft, .topRight, .bottomLeft, .bottomRight])
         .fixedSize(horizontal: false, vertical: true)
+        .accessibilityIdentifier(AccessibilityID.DayView.moodHeader)
     }
 
     @ViewBuilder
@@ -121,6 +122,7 @@ struct HorizontalVotingView: View {
                 }
                 .buttonStyle(MoodButtonStyle())
                 .frame(maxWidth: .infinity)
+                .accessibilityIdentifier(AccessibilityID.MoodButton.id(for: mood.widgetDisplayName))
                 .accessibilityLabel(mood.strValue)
                 .accessibilityHint(String(localized: "Select this mood"))
             }
@@ -185,6 +187,7 @@ struct CardVotingView: View {
                 )
         }
         .buttonStyle(CardButtonStyle())
+        .accessibilityIdentifier(AccessibilityID.MoodButton.id(for: mood.widgetDisplayName))
         .accessibilityLabel(mood.strValue)
         .accessibilityHint(String(localized: "Select this mood"))
     }
@@ -224,6 +227,7 @@ struct StackedVotingView: View {
                     )
                 }
                 .buttonStyle(CardButtonStyle())
+                .accessibilityIdentifier(AccessibilityID.MoodButton.id(for: mood.widgetDisplayName))
                 .accessibilityLabel(mood.strValue)
                 .accessibilityHint(String(localized: "Select this mood"))
             }
@@ -310,6 +314,7 @@ struct AuraVotingView: View {
             }
         }
         .buttonStyle(AuraButtonStyle(color: color))
+        .accessibilityIdentifier(AccessibilityID.MoodButton.id(for: mood.widgetDisplayName))
         .accessibilityLabel(mood.strValue)
         .accessibilityHint(String(localized: "Select this mood"))
     }
@@ -400,6 +405,7 @@ struct OrbitVotingView: View {
         }
         .buttonStyle(OrbitButtonStyle(color: color))
         .position(x: posX, y: posY)
+        .accessibilityIdentifier(AccessibilityID.MoodButton.id(for: mood.widgetDisplayName))
         .accessibilityLabel(mood.strValue)
         .accessibilityHint(String(localized: "Select this mood"))
     }
@@ -687,6 +693,7 @@ struct NeonEqualizerBar: View {
         }
         .buttonStyle(NeonBarButtonStyle(isPressed: $isPressed))
         .frame(maxWidth: .infinity)
+        .accessibilityIdentifier(AccessibilityID.MoodButton.id(for: mood.widgetDisplayName))
         .accessibilityLabel(mood.strValue)
         .accessibilityHint(String(localized: "Select this mood"))
     }