feat: 支持 x-api-key 认证并扩展 Anthropic 响应字段，优化工具调用处理

Yi.Abp.Net8/module/ai-hub/Yi.Framework.AiHub.Application/Services/OpenApiService.cs

@@ -193,11 +193,16 @@ public class OpenApiService : ApplicationService
 
     private string? GetTokenByHttpContext(HttpContext httpContext)
     {
-        // 获取Authorization头
-        string authHeader = httpContext.Request.Headers["Authorization"];
+        // 优先从 x-api-key 获取
+        string apiKeyHeader = httpContext.Request.Headers["x-api-key"];
+        if (!string.IsNullOrWhiteSpace(apiKeyHeader))
+        {
+            return apiKeyHeader.Trim();
+        }
 
-        // 检查是否有Bearer token
-        if (authHeader != null && authHeader.StartsWith("Bearer "))
+        // 再检查 Authorization 头
+        string authHeader = httpContext.Request.Headers["Authorization"];
+        if (!string.IsNullOrWhiteSpace(authHeader) && authHeader.StartsWith("Bearer ", StringComparison.OrdinalIgnoreCase))
         {
             return authHeader.Substring("Bearer ".Length).Trim();
         }