重构作业结构：优化实体模型、DTO映射和前端界面

- 重构AppMainStruct、AssignmentQuestion、Question等实体模型
- 更新相关DTO以匹配新的数据结构
- 优化前端页面布局和组件
- 添加全局信息和笔记功能相关代码
- 更新数据库迁移和程序配置

TechHelper.Server/Migrations/20250901072725_question_qt_update.cs

@@ -0,0 +1,93 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+#pragma warning disable CA1814 // Prefer jagged arrays over multidimensional
+
+namespace TechHelper.Server.Migrations
+{
+    /// <inheritdoc />
+    public partial class question_qt_update : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DeleteData(
+                table: "AspNetRoles",
+                keyColumn: "Id",
+                keyValue: new Guid("0775702a-5db7-4747-94d0-4376fad2b58b"));
+
+            migrationBuilder.DeleteData(
+                table: "AspNetRoles",
+                keyColumn: "Id",
+                keyValue: new Guid("37f41430-0cb7-44e5-988b-976200bd602d"));
+
+            migrationBuilder.DeleteData(
+                table: "AspNetRoles",
+                keyColumn: "Id",
+                keyValue: new Guid("df89b9a0-65ef-42dd-b2cb-e59997a72e70"));
+
+            migrationBuilder.AddColumn<string>(
+                name: "QType",
+                table: "questions",
+                type: "longtext",
+                nullable: false)
+                .Annotation("MySql:CharSet", "utf8mb4");
+
+            migrationBuilder.AddColumn<byte>(
+                name: "Type",
+                table: "assignment_questions",
+                type: "tinyint unsigned",
+                nullable: false,
+                defaultValue: (byte)0);
+
+            migrationBuilder.InsertData(
+                table: "AspNetRoles",
+                columns: new[] { "Id", "ConcurrencyStamp", "Name", "NormalizedName" },
+                values: new object[,]
+                {
+                    { new Guid("67de6514-79a5-4a9c-b54c-13cac296b0c6"), null, "Teacher", "TEACHER" },
+                    { new Guid("94f0d8d9-ffba-4e28-b578-8596363d42ae"), null, "Student", "STUDENT" },
+                    { new Guid("bf46ed67-2dc9-40f8-8717-37dd3572f274"), null, "Administrator", "ADMINISTRATOR" }
+                });
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DeleteData(
+                table: "AspNetRoles",
+                keyColumn: "Id",
+                keyValue: new Guid("67de6514-79a5-4a9c-b54c-13cac296b0c6"));
+
+            migrationBuilder.DeleteData(
+                table: "AspNetRoles",
+                keyColumn: "Id",
+                keyValue: new Guid("94f0d8d9-ffba-4e28-b578-8596363d42ae"));
+
+            migrationBuilder.DeleteData(
+                table: "AspNetRoles",
+                keyColumn: "Id",
+                keyValue: new Guid("bf46ed67-2dc9-40f8-8717-37dd3572f274"));
+
+            migrationBuilder.DropColumn(
+                name: "QType",
+                table: "questions");
+
+            migrationBuilder.DropColumn(
+                name: "Type",
+                table: "assignment_questions");
+
+            migrationBuilder.InsertData(
+                table: "AspNetRoles",
+                columns: new[] { "Id", "ConcurrencyStamp", "Name", "NormalizedName" },
+                values: new object[,]
+                {
+                    { new Guid("0775702a-5db7-4747-94d0-4376fad2b58b"), null, "Teacher", "TEACHER" },
+                    { new Guid("37f41430-0cb7-44e5-988b-976200bd602d"), null, "Administrator", "ADMINISTRATOR" },
+                    { new Guid("df89b9a0-65ef-42dd-b2cb-e59997a72e70"), null, "Student", "STUDENT" }
+                });
+        }
+    }
+}

TechHelper.Server/Migrations/20250901080732_question_qt_update_2.cs

@@ -0,0 +1,89 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+#pragma warning disable CA1814 // Prefer jagged arrays over multidimensional
+
+namespace TechHelper.Server.Migrations
+{
+    /// <inheritdoc />
+    public partial class question_qt_update_2 : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DeleteData(
+                table: "AspNetRoles",
+                keyColumn: "Id",
+                keyValue: new Guid("67de6514-79a5-4a9c-b54c-13cac296b0c6"));
+
+            migrationBuilder.DeleteData(
+                table: "AspNetRoles",
+                keyColumn: "Id",
+                keyValue: new Guid("94f0d8d9-ffba-4e28-b578-8596363d42ae"));
+
+            migrationBuilder.DeleteData(
+                table: "AspNetRoles",
+                keyColumn: "Id",
+                keyValue: new Guid("bf46ed67-2dc9-40f8-8717-37dd3572f274"));
+
+            migrationBuilder.CreateTable(
+                name: "global",
+                columns: table => new
+                {
+                    id = table.Column<Guid>(type: "char(36)", nullable: false, collation: "ascii_general_ci"),
+                    Area = table.Column<byte>(type: "tinyint unsigned", nullable: false),
+                    Info = table.Column<string>(type: "longtext", nullable: false)
+                        .Annotation("MySql:CharSet", "utf8mb4")
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_global", x => x.id);
+                })
+                .Annotation("MySql:CharSet", "utf8mb4");
+
+            migrationBuilder.InsertData(
+                table: "AspNetRoles",
+                columns: new[] { "Id", "ConcurrencyStamp", "Name", "NormalizedName" },
+                values: new object[,]
+                {
+                    { new Guid("49854839-b861-4d42-bdbe-96b1a66c25ef"), null, "Teacher", "TEACHER" },
+                    { new Guid("5c7a7971-2610-4bce-9e41-0caffd5a5558"), null, "Student", "STUDENT" },
+                    { new Guid("83ff7de8-edc9-47f8-8de8-22f892ca6bb5"), null, "Administrator", "ADMINISTRATOR" }
+                });
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "global");
+
+            migrationBuilder.DeleteData(
+                table: "AspNetRoles",
+                keyColumn: "Id",
+                keyValue: new Guid("49854839-b861-4d42-bdbe-96b1a66c25ef"));
+
+            migrationBuilder.DeleteData(
+                table: "AspNetRoles",
+                keyColumn: "Id",
+                keyValue: new Guid("5c7a7971-2610-4bce-9e41-0caffd5a5558"));
+
+            migrationBuilder.DeleteData(
+                table: "AspNetRoles",
+                keyColumn: "Id",
+                keyValue: new Guid("83ff7de8-edc9-47f8-8de8-22f892ca6bb5"));
+
+            migrationBuilder.InsertData(
+                table: "AspNetRoles",
+                columns: new[] { "Id", "ConcurrencyStamp", "Name", "NormalizedName" },
+                values: new object[,]
+                {
+                    { new Guid("67de6514-79a5-4a9c-b54c-13cac296b0c6"), null, "Teacher", "TEACHER" },
+                    { new Guid("94f0d8d9-ffba-4e28-b578-8596363d42ae"), null, "Student", "STUDENT" },
+                    { new Guid("bf46ed67-2dc9-40f8-8717-37dd3572f274"), null, "Administrator", "ADMINISTRATOR" }
+                });
+        }
+    }
+}

TechHelper.Server/Migrations/20250901083708_question_qt_update_3.cs

@@ -0,0 +1,82 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+#pragma warning disable CA1814 // Prefer jagged arrays over multidimensional
+
+namespace TechHelper.Server.Migrations
+{
+    /// <inheritdoc />
+    public partial class question_qt_update_3 : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DeleteData(
+                table: "AspNetRoles",
+                keyColumn: "Id",
+                keyValue: new Guid("49854839-b861-4d42-bdbe-96b1a66c25ef"));
+
+            migrationBuilder.DeleteData(
+                table: "AspNetRoles",
+                keyColumn: "Id",
+                keyValue: new Guid("5c7a7971-2610-4bce-9e41-0caffd5a5558"));
+
+            migrationBuilder.DeleteData(
+                table: "AspNetRoles",
+                keyColumn: "Id",
+                keyValue: new Guid("83ff7de8-edc9-47f8-8de8-22f892ca6bb5"));
+
+            migrationBuilder.AddColumn<byte>(
+                name: "SubjectArea",
+                table: "AspNetUsers",
+                type: "tinyint unsigned",
+                nullable: false,
+                defaultValue: (byte)0);
+
+            migrationBuilder.InsertData(
+                table: "AspNetRoles",
+                columns: new[] { "Id", "ConcurrencyStamp", "Name", "NormalizedName" },
+                values: new object[,]
+                {
+                    { new Guid("2670f35a-df0c-4071-8879-80eb99d138a1"), null, "Teacher", "TEACHER" },
+                    { new Guid("8c6c5e8e-ef00-444c-9c7c-cba5cd6f7043"), null, "Student", "STUDENT" },
+                    { new Guid("9eda9d90-0cd2-4fbe-b07e-f90bd01f32db"), null, "Administrator", "ADMINISTRATOR" }
+                });
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DeleteData(
+                table: "AspNetRoles",
+                keyColumn: "Id",
+                keyValue: new Guid("2670f35a-df0c-4071-8879-80eb99d138a1"));
+
+            migrationBuilder.DeleteData(
+                table: "AspNetRoles",
+                keyColumn: "Id",
+                keyValue: new Guid("8c6c5e8e-ef00-444c-9c7c-cba5cd6f7043"));
+
+            migrationBuilder.DeleteData(
+                table: "AspNetRoles",
+                keyColumn: "Id",
+                keyValue: new Guid("9eda9d90-0cd2-4fbe-b07e-f90bd01f32db"));
+
+            migrationBuilder.DropColumn(
+                name: "SubjectArea",
+                table: "AspNetUsers");
+
+            migrationBuilder.InsertData(
+                table: "AspNetRoles",
+                columns: new[] { "Id", "ConcurrencyStamp", "Name", "NormalizedName" },
+                values: new object[,]
+                {
+                    { new Guid("49854839-b861-4d42-bdbe-96b1a66c25ef"), null, "Teacher", "TEACHER" },
+                    { new Guid("5c7a7971-2610-4bce-9e41-0caffd5a5558"), null, "Student", "STUDENT" },
+                    { new Guid("83ff7de8-edc9-47f8-8de8-22f892ca6bb5"), null, "Administrator", "ADMINISTRATOR" }
+                });
+        }
+    }
+}

TechHelper.Server/Migrations/ApplicationContextModelSnapshot.cs

@@ -219,6 +219,9 @@ namespace TechHelper.Server.Migrations
                         .HasColumnType("varchar(1024)")
                         .HasColumnName("title");
 
+                    b.Property<byte>("Type")
+                        .HasColumnType("tinyint unsigned");
+
                     b.HasKey("Id");
 
                     b.HasIndex("AssignmentId");
@@ -332,6 +335,25 @@ namespace TechHelper.Server.Migrations
                     b.ToTable("class_teachers", (string)null);
                 });
 
+            modelBuilder.Entity("Entities.Contracts.Global", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("char(36)")
+                        .HasColumnName("id");
+
+                    b.Property<byte>("Area")
+                        .HasColumnType("tinyint unsigned");
+
+                    b.Property<string>("Info")
+                        .IsRequired()
+                        .HasColumnType("longtext");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("global");
+                });
+
             modelBuilder.Entity("Entities.Contracts.KeyPoint", b =>
                 {
                     b.Property<Guid>("Id")
@@ -445,6 +467,10 @@ namespace TechHelper.Server.Migrations
                         .HasColumnType("longtext")
                         .HasColumnName("options");
 
+                    b.Property<string>("QType")
+                        .IsRequired()
+                        .HasColumnType("longtext");
+
                     b.Property<byte>("SubjectArea")
                         .HasMaxLength(100)
                         .HasColumnType("tinyint unsigned")
@@ -723,6 +749,9 @@ namespace TechHelper.Server.Migrations
                     b.Property<string>("SecurityStamp")
                         .HasColumnType("longtext");
 
+                    b.Property<byte>("SubjectArea")
+                        .HasColumnType("tinyint unsigned");
+
                     b.Property<bool>("TwoFactorEnabled")
                         .HasColumnType("tinyint(1)");
 
@@ -771,19 +800,19 @@ namespace TechHelper.Server.Migrations
                     b.HasData(
                         new
                         {
-                            Id = new Guid("df89b9a0-65ef-42dd-b2cb-e59997a72e70"),
+                            Id = new Guid("8c6c5e8e-ef00-444c-9c7c-cba5cd6f7043"),
                             Name = "Student",
                             NormalizedName = "STUDENT"
                         },
                         new
                         {
-                            Id = new Guid("0775702a-5db7-4747-94d0-4376fad2b58b"),
+                            Id = new Guid("2670f35a-df0c-4071-8879-80eb99d138a1"),
                             Name = "Teacher",
                             NormalizedName = "TEACHER"
                         },
                         new
                         {
-                            Id = new Guid("37f41430-0cb7-44e5-988b-976200bd602d"),
+                            Id = new Guid("9eda9d90-0cd2-4fbe-b07e-f90bd01f32db"),
                             Name = "Administrator",
                             NormalizedName = "ADMINISTRATOR"
                         });