修复了一点bug，然后增加了图层拆分更多的功能

backend/internal/httpapi/method_compat_test.go

@@ -12,8 +12,8 @@ import (
 
 func TestRouteMethodCompatibilityDerivesEverySurfacePath(t *testing.T) {
 	patterns := routeMethodPatterns(GoRouteSurface())
-	if len(patterns) != 47 {
-		t.Fatalf("route patterns=%d want 47", len(patterns))
+	if len(patterns) != 48 {
+		t.Fatalf("route patterns=%d want 48", len(patterns))
 	}
 	for _, pattern := range patterns {
 		if _, ok := pattern.methods[http.MethodOptions]; !ok {