feat: 重构 TodoList 架构，新增动态 API 与 MAUI 内嵌 Web 服务

feat:优化交互逻辑,优化发布流程

src/TodoList.Maui/Services/AppMetadata.cs

@@ -0,0 +1,60 @@
+using Microsoft.Maui.ApplicationModel;
+using System;
+using System.Reflection;
+
+namespace TodoList.Maui.Services;
+
+public static class AppMetadata
+{
+	private const string AppNameText = "\u5F85\u529E\u4E8B\u9879";
+
+	public static string AppName => AppNameText;
+
+	public static string? GetDisplayVersion()
+	{
+		// 优先使用Assembly版本
+		var asmVersion = Assembly.GetExecutingAssembly().GetName().Version;
+		if (asmVersion != null)
+		{
+			// 只返回主版本.次版本.修订版本 (如: 1.0.4)
+			return $"{asmVersion.Major}.{asmVersion.Minor}.{asmVersion.Build}";
+		}
+
+		// 回退到AppInfo
+		var versionString = AppInfo.Current.VersionString?.Trim();
+		if (string.IsNullOrWhiteSpace(versionString))
+		{
+			return null;
+		}
+
+		if (!Version.TryParse(versionString, out var parsed))
+		{
+			return null;
+		}
+
+		return $"{parsed.Major}.{parsed.Minor}.{parsed.Build}";
+	}
+
+	public static string GetDisplayTitle()
+	{
+		var version = GetDisplayVersion();
+		return string.IsNullOrWhiteSpace(version) ? AppName : $"{AppName} v{version}";
+	}
+
+	public static string GetTitleBarVersionText()
+	{
+		var version = GetDisplayVersion();
+		return string.IsNullOrWhiteSpace(version) ? AppNameText : $"{AppNameText} v{version}";
+	}
+
+	public static string GetWindowTitle()
+	{
+		return GetTitleBarVersionText();
+	}
+
+	public static string GetTrayTooltipText()
+	{
+		var text = GetDisplayTitle();
+		return text.Length > 63 ? text[..63] : text;
+	}
+}