Fix remaining 17 UI test failures: group defaults, identifiers, hittability, date format

- resetAppState: use correct suite name to clear group defaults (fixes stale subscription state)
- Reorder configureIfNeeded: set expireTrial before IAPManager init
- Add browse_themes_button identifier to CustomizeView Browse Themes button
- Add mood_button_* identifiers to Entry Detail mood grid in NoteEditorView
- Use coordinate-based tap throughout all test screens (iOS 26 Liquid Glass hittability)
- Fix HeaderMoodLogging date format: M/d/yyyy → yyyy/MM/dd to match entry_row identifiers
- AppLaunchTests: wait for isSelected state with NSPredicate instead of immediate check
- OnboardingTests: add waits between swipes and retry logic for skip button

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

Tests iOS/AppThemeTests.swift

@@ -32,7 +32,7 @@ final class AppThemeTests: BaseUITestCase {
             browseButton.waitForExistence(timeout: 5),
             "Browse Themes button should exist"
         )
-        browseButton.tapWhenReady()
+        browseButton.coordinate(withNormalizedOffset: CGVector(dx: 0.5, dy: 0.5)).tap()
 
         // Wait for the themes sheet to appear
         // Look for any theme card as an indicator that the sheet loaded
@@ -69,7 +69,9 @@ final class AppThemeTests: BaseUITestCase {
         settingsScreen.assertVisible()
 
         // Open Browse Themes sheet
-        settingsScreen.browseThemesButton.tapWhenReady()
+        let browseBtn = settingsScreen.browseThemesButton
+        _ = browseBtn.waitForExistence(timeout: 5)
+        browseBtn.coordinate(withNormalizedOffset: CGVector(dx: 0.5, dy: 0.5)).tap()
 
         // Wait for sheet to load
         let firstCard = app.descendants(matching: .any)
@@ -87,13 +89,13 @@ final class AppThemeTests: BaseUITestCase {
                 app.swipeUp()
             }
             if card.waitForExistence(timeout: 3) {
-                card.tapWhenReady()
+                card.coordinate(withNormalizedOffset: CGVector(dx: 0.5, dy: 0.5)).tap()
 
                 // A preview sheet or confirmation may appear — dismiss it
                 // Look for an "Apply" or close button and tap if present
                 let applyButton = app.buttons["Apply"]
                 if applyButton.waitForExistence(timeout: 2) {
-                    applyButton.tapWhenReady()
+                    applyButton.coordinate(withNormalizedOffset: CGVector(dx: 0.5, dy: 0.5)).tap()
                 }
             }
         }
@@ -103,7 +105,7 @@ final class AppThemeTests: BaseUITestCase {
         // Dismiss the themes sheet by swiping down or tapping Done
         let doneButton = app.buttons["Done"]
         if doneButton.waitForExistence(timeout: 2) {
-            doneButton.tapWhenReady()
+            doneButton.coordinate(withNormalizedOffset: CGVector(dx: 0.5, dy: 0.5)).tap()
         } else {
             // Swipe down to dismiss the sheet
             app.swipeDown()