feat: 完成云同步、语音控制与多平台扩展基础架构搭建

本次提交完成了项目核心基础架构升级：
1. 新增动态API中间件与权限控制系统，支持匿名/鉴权接口分离
2. 搭建云同步服务体系，包含认证、任务同步、安全策略等核心模块
3. 实现语音控制全链路，从STT/意图解析到命令执行
4. 新增任务类型、附件实体与相关仓储接口
5. 重构前端配置与代理规则，统一后端端口为5057
6. 新增多平台测试项目与CI脚本优化
7. 完善项目文档与代码注释规范

移除了旧版迁移文件与冗余代理配置，调整项目结构适配跨平台部署需求。

test/Hua.Todo.Host.Tests/Meeting/MeetingTranscriptionTests.cs

@@ -0,0 +1,107 @@
+using Hua.Todo.Application.Services.Meeting;
+using Hua.Todo.Application.Services.Meeting.Models;
+using Xunit;
+
+namespace Hua.Todo.Host.Tests.Meeting;
+
+/// <summary>
+/// 工单 03-02 音频录制与转写测试。
+/// </summary>
+public class MeetingTranscriptionTests
+{
+    [Fact]
+    public void TranscribeRequest_CanBeCreated()
+    {
+        var taskId = Guid.NewGuid();
+        var request = new TranscribeRequest
+        {
+            TaskId = taskId,
+            AudioBase64 = "dGVzdA==",
+            Format = "webm",
+            AudioDuration = 90.0
+        };
+
+        Assert.Equal(taskId, request.TaskId);
+        Assert.Equal("dGVzdA==", request.AudioBase64);
+        Assert.Equal("webm", request.Format);
+        Assert.Equal(90.0, request.AudioDuration);
+    }
+
+    [Fact]
+    public void TranscribeResponse_CanBeCreated()
+    {
+        var taskId = Guid.NewGuid();
+        var response = new TranscribeResponse
+        {
+            TaskId = taskId,
+            Transcript = "这是转写后的文字内容",
+            AudioDuration = 90.0
+        };
+
+        Assert.Equal(taskId, response.TaskId);
+        Assert.Equal("这是转写后的文字内容", response.Transcript);
+        Assert.Equal(90.0, response.AudioDuration);
+    }
+
+    [Fact]
+    public void TranscribeResponse_DefaultValues()
+    {
+        var response = new TranscribeResponse();
+
+        Assert.Equal(Guid.Empty, response.TaskId);
+        Assert.Equal(string.Empty, response.Transcript);
+        Assert.Equal(0.0, response.AudioDuration);
+    }
+
+    [Fact]
+    public void TranscribeRequest_DefaultValues()
+    {
+        var request = new TranscribeRequest();
+
+        Assert.Equal(Guid.Empty, request.TaskId);
+        Assert.Equal(string.Empty, request.AudioBase64);
+        Assert.Equal(string.Empty, request.Format);
+        Assert.Equal(0.0, request.AudioDuration);
+    }
+
+    [Fact]
+    public void ISttService_InterfaceExists()
+    {
+        var type = typeof(ISttService);
+        Assert.True(type.IsInterface);
+        Assert.Contains("Hua.Todo.Application.Services.Meeting", type.Namespace);
+    }
+
+    [Fact]
+    public void SttService_ImplementsISttService()
+    {
+        var type = typeof(SttService);
+        Assert.True(typeof(ISttService).IsAssignableFrom(type));
+    }
+
+    [Fact]
+    public void ISttService_HasTranscribeAsyncMethod()
+    {
+        var method = typeof(ISttService).GetMethod("TranscribeAsync");
+        Assert.NotNull(method);
+        Assert.Equal(typeof(Task<string>), method.ReturnType);
+
+        var parameters = method.GetParameters();
+        Assert.Equal(3, parameters.Length);
+        Assert.Equal(typeof(Stream), parameters[0].ParameterType);
+        Assert.Equal(typeof(string), parameters[1].ParameterType);
+        Assert.Equal(typeof(CancellationToken), parameters[2].ParameterType);
+    }
+
+    [Fact]
+    public void IMeetingService_HasTranscribeAudioAsyncMethod()
+    {
+        var method = typeof(IMeetingService).GetMethod("TranscribeAudioAsync");
+        Assert.NotNull(method);
+        Assert.Equal(typeof(Task<TranscribeResponse>), method.ReturnType);
+
+        var parameters = method.GetParameters();
+        Assert.Single(parameters);
+        Assert.Equal(typeof(TranscribeRequest), parameters[0].ParameterType);
+    }
+}