前端：

优化electron效果

backend/IM_API/Migrations/20260306065353_uploadtask-url.cs

@@ -0,0 +1,30 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace IM_API.Migrations
+{
+    /// <inheritdoc />
+    public partial class uploadtaskurl : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "Url",
+                table: "upload_tasks",
+                type: "longtext",
+                nullable: true,
+                collation: "utf8mb4_general_ci")
+                .Annotation("MySql:CharSet", "utf8mb4");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "Url",
+                table: "upload_tasks");
+        }
+    }
+}

backend/IM_API/Migrations/ImContextModelSnapshot.cs

@@ -812,6 +812,9 @@ namespace IM_API.Migrations
                     b.Property<int>("TotalChunks")
                         .HasColumnType("int");
 
+                    b.Property<string>("Url")
+                        .HasColumnType("longtext");
+
                     b.HasKey("Id")
                         .HasName("PRIMARY");