Add nearby POIs to Add-to-Day sheet and improve PlaceSearchSheet empty state

- Add mapItem field to POISearchService.POI for Apple Maps integration
- Merge description + location into single combined card in QuickAddItemSheet
- Auto-load nearby POIs when regionCoordinate is available, with detail sheet
- Create POIDetailSheet with map preview, metadata, and one-tap add-to-day
- Add poiAddedToDay/poiDetailViewed analytics events
- Add initial state to PlaceSearchSheet with search suggestions and flow layout

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

SportsTime/Core/Analytics/AnalyticsEvent.swift

@@ -75,6 +75,11 @@ enum AnalyticsEvent {
     case onboardingPaywallViewed
     case onboardingPaywallDismissed
 
+    // MARK: - POI
+
+    case poiAddedToDay(poiName: String, category: String, day: Int)
+    case poiDetailViewed(poiName: String, category: String)
+
     // MARK: - Errors
 
     case errorOccurred(domain: String, message: String, screen: String?)
@@ -122,6 +127,8 @@ enum AnalyticsEvent {
         case .pollShared: return "poll_shared"
         case .onboardingPaywallViewed: return "onboarding_paywall_viewed"
         case .onboardingPaywallDismissed: return "onboarding_paywall_dismissed"
+        case .poiAddedToDay: return "poi_added_to_day"
+        case .poiDetailViewed: return "poi_detail_viewed"
         case .errorOccurred: return "error_occurred"
         }
     }
@@ -249,6 +256,12 @@ enum AnalyticsEvent {
         case .onboardingPaywallDismissed:
             return [:]
 
+        case .poiAddedToDay(let poiName, let category, let day):
+            return ["poi_name": poiName, "category": category, "day": day]
+
+        case .poiDetailViewed(let poiName, let category):
+            return ["poi_name": poiName, "category": category]
+
         case .errorOccurred(let domain, let message, let screen):
             var props: [String: Any] = ["domain": domain, "message": message]
             if let screen { props["screen"] = screen }