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/AccessibilityIdentifiers.swift

@@ -0,0 +1,146 @@
+//
+//  AccessibilityIdentifiers.swift
+//  Feels (iOS)
+//
+//  Centralized accessibility identifiers for XCUITest targeting.
+//
+
+import Foundation
+
+enum AccessibilityID {
+    // MARK: - Tabs
+    enum Tab {
+        static let day = "tab_day"
+        static let month = "tab_month"
+        static let year = "tab_year"
+        static let insights = "tab_insights"
+        static let settings = "tab_settings"
+    }
+
+    // MARK: - Mood Buttons (voting header)
+    enum MoodButton {
+        static let great = "mood_button_great"
+        static let good = "mood_button_good"
+        static let average = "mood_button_average"
+        static let bad = "mood_button_bad"
+        static let horrible = "mood_button_horrible"
+
+        static func id(for moodStrValue: String) -> String {
+            "mood_button_\(moodStrValue.lowercased())"
+        }
+    }
+
+    // MARK: - Day View
+    enum DayView {
+        static let moodHeader = "mood_header"
+        static let entryList = "entry_list"
+        static let emptyState = "empty_state"
+        static let emptyStateNoData = "empty_state_no_data"
+        static func entryRow(dateString: String) -> String {
+            "entry_row_\(dateString)"
+        }
+    }
+
+    // MARK: - Entry Detail
+    enum EntryDetail {
+        static let sheet = "entry_detail_sheet"
+        static let doneButton = "entry_detail_done"
+        static let deleteButton = "entry_detail_delete"
+        static let noteButton = "entry_detail_note_button"
+        static let noteArea = "entry_detail_note_area"
+        static let moodGrid = "entry_detail_mood_grid"
+    }
+
+    // MARK: - Note Editor
+    enum NoteEditor {
+        static let textEditor = "note_editor_text"
+        static let saveButton = "note_editor_save"
+        static let cancelButton = "note_editor_cancel"
+    }
+
+    // MARK: - Settings
+    enum Settings {
+        static let header = "settings_header"
+        static let customizeTab = "settings_tab_customize"
+        static let settingsTab = "settings_tab_settings"
+        static let upgradeBanner = "upgrade_banner"
+        static let subscribeButton = "subscribe_button"
+        static let whyUpgradeButton = "why_upgrade_button"
+        static let clearDataButton = "settings_clear_data"
+        static let analyticsToggle = "settings_analytics_toggle"
+        static let showOnboardingButton = "settings_show_onboarding"
+    }
+
+    // MARK: - Customize
+    enum Customize {
+        static let themeSection = "customize_theme_section"
+        static let browseThemesButton = "browse_themes_button"
+        static func themeButton(_ name: String) -> String {
+            "customize_theme_\(name.lowercased())"
+        }
+        static func votingLayoutButton(_ name: String) -> String {
+            "customize_voting_\(name.lowercased())"
+        }
+        static func dayViewStyleButton(_ name: String) -> String {
+            "customize_daystyle_\(name.lowercased())"
+        }
+        static func iconPackButton(_ name: String) -> String {
+            "customize_iconpack_\(name.lowercased())"
+        }
+        static func appThemeCard(_ name: String) -> String {
+            "apptheme_card_\(name.lowercased())"
+        }
+    }
+
+    // MARK: - Paywall
+    enum Paywall {
+        static let monthOverlay = "paywall_month_overlay"
+        static let yearOverlay = "paywall_year_overlay"
+        static let insightsOverlay = "paywall_insights_overlay"
+    }
+
+    // MARK: - Day View Section Headers
+    enum DaySection {
+        static func header(month: Int, year: Int) -> String {
+            "day_section_\(month)_\(year)"
+        }
+    }
+
+    // MARK: - Insights
+    enum Insights {
+        static let header = "insights_header"
+        static let monthSection = "insights_month_section"
+        static let yearSection = "insights_year_section"
+        static let allTimeSection = "insights_all_time_section"
+    }
+
+    // MARK: - Month View
+    enum MonthView {
+        static let grid = "month_grid"
+    }
+
+    // MARK: - Year View
+    enum YearView {
+        static let heatmap = "year_heatmap"
+    }
+
+    // MARK: - Onboarding
+    enum Onboarding {
+        static let container = "onboarding_container"
+        static let welcomeScreen = "onboarding_welcome"
+        static let timeScreen = "onboarding_time"
+        static let dayScreen = "onboarding_day"
+        static let dayToday = "onboarding_day_today"
+        static let dayYesterday = "onboarding_day_yesterday"
+        static let styleScreen = "onboarding_style"
+        static let subscriptionScreen = "onboarding_subscription"
+        static let subscribeButton = "onboarding_subscribe_button"
+        static let skipButton = "onboarding_skip_button"
+    }
+
+    // MARK: - Common
+    enum Common {
+        static let lockScreen = "lock_screen"
+        static let onboarding = "onboarding_sheet"
+    }
+}