test: add QA coverage — access unit tests, VideoPlayer snapshots, Maestro E2E flows, testIDs

- Add testIDs to explore, workout detail, and collection detail screens
- Add testID prop to VideoPlayer component
- Create access service unit tests (isFreeWorkout, canAccessWorkout)
- Create VideoPlayer rendering snapshot tests (preview/background modes)
- Create Maestro E2E flows: explore-freemium, collection-detail
- Update tab-navigation flow with Explore screen assertions
- Update profile-settings flow with real activity stat assertions
- Update all-tests suite to include new flows

.maestro/flows/profile-settings.yaml

@@ -28,11 +28,19 @@ name: Profile Settings
     timeout: 3000
     optional: true
 
-# Check stats are visible
+# Check stats section — real activity store data (may show 0 if no workouts done)
 - assertVisible:
     text: ".*workout.*"
     timeout: 3000
     optional: true
+- assertVisible:
+    text: ".*min.*"
+    timeout: 3000
+    optional: true
+- assertVisible:
+    text: ".*cal.*"
+    timeout: 3000
+    optional: true
 
 # Scroll to settings section
 - scroll: