Add F-015, F-076, F-094 UI tests for home refresh, trip detail, diagnostics

- F-015: Featured trips refresh button works without crash
- F-076: Trip detail loads correctly with single-stop trip
- F-094: Schedule diagnostics sheet opens from filter menu

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

SportsTimeUITests/Tests/ScheduleTests.swift

@@ -3,7 +3,7 @@
 //  SportsTimeUITests
 //
 //  Verifies the Schedule tab loads and displays content.
-//  QA Sheet: F-085, F-086, F-087, F-088, F-089, F-090, F-092
+//  QA Sheet: F-085, F-086, F-087, F-088, F-089, F-090, F-092, F-094
 //
 
 import XCTest
@@ -190,4 +190,33 @@ final class ScheduleTests: BaseUITestCase {
 
         captureScreenshot(named: "F092-ScheduleEmptyState")
     }
+
+    // MARK: - Diagnostics (F-094)
+
+    /// F-094: Diagnostics button opens the diagnostics sheet.
+    @MainActor
+    func testF094_ScheduleDiagnostics() {
+        let home = HomeScreen(app: app)
+        home.waitForLoad()
+        home.switchToTab(home.scheduleTab)
+
+        let schedule = ScheduleScreen(app: app)
+        schedule.assertLoaded()
+
+        // Tap the filter menu button to open the menu
+        schedule.filterButton.tap()
+
+        // Tap "Diagnostics" in the menu
+        let diagnosticsButton = app.buttons["Diagnostics"]
+        XCTAssertTrue(diagnosticsButton.waitForExistence(timeout: BaseUITestCase.shortTimeout),
+                       "Diagnostics menu item should exist")
+        diagnosticsButton.tap()
+
+        // Diagnostics sheet should appear with game count info
+        let sheetContent = app.navigationBars.firstMatch
+        XCTAssertTrue(sheetContent.waitForExistence(timeout: BaseUITestCase.defaultTimeout),
+                       "Diagnostics sheet should appear")
+
+        captureScreenshot(named: "F094-ScheduleDiagnostics")
+    }
 }