P0 实现启动配置校验：检查必填环境变量，缺失则启动失败

AssetManager.API/Program.cs

@@ -6,6 +6,9 @@ using System.Text;
 
 var builder = WebApplication.CreateBuilder(args);
 
+// 校验必填环境变量
+ValidateRequiredEnvironmentVariables();
+
 // 初始化SqlSugar配置
 AssetManager.Data.SqlSugarConfig.Initialize(builder.Configuration);
 
@@ -134,3 +137,33 @@ app.UseAuthorization();
 app.MapControllers();
 
 app.Run();
+
+/// <summary>
+/// 校验必填环境变量，启动时检查，缺省直接报错
+/// </summary>
+void ValidateRequiredEnvironmentVariables()
+{
+    var requiredVars = new List<string>
+    {
+        "JWT__SecretKey",
+        "JWT__Issuer",
+        "JWT__Audience",
+        "ConnectionStrings__DefaultConnection",
+        "Tiingo__ApiKey"
+    };
+
+    var missingVars = new List<string>();
+    foreach (var varName in requiredVars)
+    {
+        var value = Environment.GetEnvironmentVariable(varName);
+        if (string.IsNullOrEmpty(value))
+        {
+            missingVars.Add(varName);
+        }
+    }
+
+    if (missingVars.Any())
+    {
+        throw new Exception($"启动失败，缺失必填环境变量：{string.Join(", ", missingVars)}");
+    }
+}