fix(schedule): use start of day for date range queries

- Fix startDate to use Calendar.startOfDay instead of Date() to include
  games earlier in the current day
- Add SyncLogger for file-based sync logging viewable in Settings
- Add "View Sync Logs" button in Settings debug section
- Add diagnostics and NBA game logging to ScheduleViewModel
- Add dropped game logging to DataProvider.filterRichGames
- Use SyncLogger in SportsTimeApp and CloudKitService for sync operations

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

SportsTime/Core/Services/DataProvider.swift

@@ -217,14 +217,40 @@ final class AppDataProvider: ObservableObject {
     func filterRichGames(sports: Set<Sport>, startDate: Date, endDate: Date) async throws -> [RichGame] {
         let games = try await filterGames(sports: sports, startDate: startDate, endDate: endDate)
 
-        return games.compactMap { game in
-            guard let homeTeam = teamsById[game.homeTeamId],
-                  let awayTeam = teamsById[game.awayTeamId],
-                  let stadium = stadiumsById[game.stadiumId] else {
-                return nil
+        print("🎮 [DATA] filterRichGames: \(games.count) games from SwiftData for \(sports.map(\.rawValue).joined(separator: ", "))")
+
+        var richGames: [RichGame] = []
+        var droppedGames: [(game: Game, reason: String)] = []
+
+        for game in games {
+            let homeTeam = teamsById[game.homeTeamId]
+            let awayTeam = teamsById[game.awayTeamId]
+            let stadium = stadiumsById[game.stadiumId]
+
+            if homeTeam == nil || awayTeam == nil || stadium == nil {
+                var reasons: [String] = []
+                if homeTeam == nil { reasons.append("homeTeam(\(game.homeTeamId))") }
+                if awayTeam == nil { reasons.append("awayTeam(\(game.awayTeamId))") }
+                if stadium == nil { reasons.append("stadium(\(game.stadiumId))") }
+                droppedGames.append((game, "missing: \(reasons.joined(separator: ", "))"))
+                continue
             }
-            return RichGame(game: game, homeTeam: homeTeam, awayTeam: awayTeam, stadium: stadium)
+
+            richGames.append(RichGame(game: game, homeTeam: homeTeam!, awayTeam: awayTeam!, stadium: stadium!))
         }
+
+        if !droppedGames.isEmpty {
+            print("⚠️ [DATA] Dropped \(droppedGames.count) games due to missing lookups:")
+            for (game, reason) in droppedGames.prefix(10) {
+                print("⚠️ [DATA]   \(game.sport.rawValue) game \(game.id): \(reason)")
+            }
+            if droppedGames.count > 10 {
+                print("⚠️ [DATA]   ... and \(droppedGames.count - 10) more")
+            }
+        }
+
+        print("🎮 [DATA] Returning \(richGames.count) rich games")
+        return richGames
     }
 
     /// Get all games with full team and stadium data (no date filtering)