feat(inventory): migration for viewer_acquire_history

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

SVSim.Database/Migrations/20260609182346_AddViewerAcquireHistory.cs

@@ -0,0 +1,53 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace SVSim.Database.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddViewerAcquireHistory : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "ViewerAcquireHistory",
+                columns: table => new
+                {
+                    Id = table.Column<long>(type: "bigint", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    ViewerId = table.Column<long>(type: "bigint", nullable: false),
+                    RewardType = table.Column<int>(type: "integer", nullable: false),
+                    RewardDetailId = table.Column<long>(type: "bigint", nullable: false),
+                    RewardCount = table.Column<int>(type: "integer", nullable: false),
+                    AcquireType = table.Column<int>(type: "integer", nullable: false),
+                    Message = table.Column<string>(type: "character varying(64)", maxLength: 64, nullable: false),
+                    AcquireTime = table.Column<DateTime>(type: "timestamp with time zone", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_ViewerAcquireHistory", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_ViewerAcquireHistory_Viewers_ViewerId",
+                        column: x => x.ViewerId,
+                        principalTable: "Viewers",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ViewerAcquireHistory_ViewerId_AcquireTime_Id",
+                table: "ViewerAcquireHistory",
+                columns: new[] { "ViewerId", "AcquireTime", "Id" });
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "ViewerAcquireHistory");
+        }
+    }
+}

SVSim.Database/Migrations/SVSimDbContextModelSnapshot.cs

@@ -2645,6 +2645,44 @@ namespace SVSim.Database.Migrations
                     b.ToTable("ViewerAchievements");
                 });
 
+            modelBuilder.Entity("SVSim.Database.Models.ViewerAcquireHistoryEntry", b =>
+                {
+                    b.Property<long>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("bigint");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<long>("Id"));
+
+                    b.Property<DateTime>("AcquireTime")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("AcquireType")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Message")
+                        .IsRequired()
+                        .HasMaxLength(64)
+                        .HasColumnType("character varying(64)");
+
+                    b.Property<int>("RewardCount")
+                        .HasColumnType("integer");
+
+                    b.Property<long>("RewardDetailId")
+                        .HasColumnType("bigint");
+
+                    b.Property<int>("RewardType")
+                        .HasColumnType("integer");
+
+                    b.Property<long>("ViewerId")
+                        .HasColumnType("bigint");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ViewerId", "AcquireTime", "Id");
+
+                    b.ToTable("ViewerAcquireHistory");
+                });
+
             modelBuilder.Entity("SVSim.Database.Models.ViewerArenaTwoPickRun", b =>
                 {
                     b.Property<long>("Id")
@@ -4146,6 +4184,15 @@ namespace SVSim.Database.Migrations
                         .IsRequired();
                 });
 
+            modelBuilder.Entity("SVSim.Database.Models.ViewerAcquireHistoryEntry", b =>
+                {
+                    b.HasOne("SVSim.Database.Models.Viewer", null)
+                        .WithMany()
+                        .HasForeignKey("ViewerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
             modelBuilder.Entity("SVSim.Database.Models.ViewerEventCounter", b =>
                 {
                     b.HasOne("SVSim.Database.Models.Viewer", null)