✨ Typing indicator, mark as read server-side

DysonNetwork.Sphere/Migrations/20250517211759_IndexedMessageStatus.cs

@@ -0,0 +1,28 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace DysonNetwork.Sphere.Migrations
+{
+    /// <inheritdoc />
+    public partial class IndexedMessageStatus : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateIndex(
+                name: "ix_chat_statuses_message_id_sender_id",
+                table: "chat_statuses",
+                columns: new[] { "message_id", "sender_id" },
+                unique: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropIndex(
+                name: "ix_chat_statuses_message_id_sender_id",
+                table: "chat_statuses");
+        }
+    }
+}

DysonNetwork.Sphere/Migrations/AppDatabaseModelSnapshot.cs

@@ -1175,6 +1175,10 @@ namespace DysonNetwork.Sphere.Migrations
                     b.HasIndex("SenderId")
                         .HasDatabaseName("ix_chat_statuses_sender_id");
 
+                    b.HasIndex("MessageId", "SenderId")
+                        .IsUnique()
+                        .HasDatabaseName("ix_chat_statuses_message_id_sender_id");
+
                     b.ToTable("chat_statuses", (string)null);
                 });