refactor(config): 将 appsettings.json 转为嵌入资源

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

tests/Gpulse.WCT.DataAnalyzer.Tests/CliTestHost.cs

@@ -1,3 +1,4 @@
+using System.Reflection;
 using Gpulse.WCT.DataAnalyzer.Core.Infrastructure.Extensions;
 using Gpulse.WCT.DataAnalyzer.Core.Infrastructure.LocalData;
 using Microsoft.Data.Sqlite;
@@ -56,7 +57,11 @@ public sealed class CliTestHost : IDisposable
         var releaseConnection = new SqliteConnection("Data Source=:memory:");
         await releaseConnection.OpenAsync();
 
+        // 从嵌入资源加载 appsettings.json，与 Program.Main 生产路径一致
         var configuration = new ConfigurationBuilder()
+            .AddEmbeddedResourceJson(
+                typeof(Program).Assembly,
+                "Gpulse.WCT.DataAnalyzer.appsettings.json")
             .AddInMemoryCollection(new Dictionary<string, string?>
             {
                 ["Database:Type"] = "sqlite",