Implement Play Menu Tags management: add endpoints for retrieving and updating tags; enhance database schema and UI integration

DorkNet.Server/Data/DorkNetDbContext.cs

@@ -609,6 +609,7 @@ public class DorkNetDbContext(DbContextOptions<DorkNetDbContext> options) : DbCo
             e.Property(s => s.WeeklyChallengesCompletedRequired).HasDefaultValue(true);
             e.Property(s => s.WeeklyChallengesJson).HasDefaultValue(string.Empty);
             e.Property(s => s.WeeklyChallengeRewardJson).HasDefaultValue(string.Empty);
+            e.Property(s => s.PlayMenuTagsJson).HasDefaultValue(string.Empty);
         });
 
         modelBuilder.Entity<RoomKeyEntity>(e =>

DorkNet.Server/Data/Entities/ServerSettingsEntity.cs

@@ -38,5 +38,10 @@ public class ServerSettingsEntity
     /// server-side XP/token grant.</summary>
     public string WeeklyChallengeRewardJson { get; set; } = string.Empty;
 
+    /// <summary>Admin-managed Play menu room filter chips as JSON. Stores
+    /// separate pinned and popular tag lists; wire endpoints serve them to
+    /// the watch without leading # characters.</summary>
+    public string PlayMenuTagsJson { get; set; } = string.Empty;
+
     public DateTime UpdatedAt { get; set; } = DateTime.UtcNow;
 }