feat: implement ExternalInfoMiddleware and update routing for improved context handling

internal/middleware/chat_middleware.go

@@ -0,0 +1,20 @@
+package middleware
+
+import (
+	"cs-agent/internal/pkg/irisx"
+	"cs-agent/internal/pkg/openidentity"
+
+	"github.com/kataras/iris/v12"
+	"github.com/mlogclub/simple/web"
+)
+
+func ExternalInfoMiddleware(ctx iris.Context) {
+	ext, err := openidentity.GetExternalInfo(ctx)
+	if err != nil {
+		ctx.StopExecution()
+		_ = ctx.JSON(web.JsonError(err))
+		return
+	}
+	irisx.SetExternalInfo(ctx, ext)
+	ctx.Next()
+}