refactor(*): 平台架构 - 拆分后端领域模块并同步插件协议与模型能力

backend/internal/generation/engine_test.go

@@ -0,0 +1,21 @@
+package generation_test
+
+import (
+	"testing"
+
+	"infinite-canvas/backend/internal/generation"
+)
+
+func TestGenerationPackageHasEngineAndOfficialRegistry(t *testing.T) {
+	engine := generation.NewEngine(generation.Deps{})
+	if engine == nil {
+		t.Fatal("NewEngine returned nil")
+	}
+	if name, ok := generation.OfficialDeclarativeImageInterface("openai-image"); !ok || name == "" {
+		t.Fatalf("openai-image whitelist = %q %v", name, ok)
+	}
+	registry := generation.LoadOfficialFallbackRegistry()
+	if registry == nil {
+		t.Fatal("LoadOfficialFallbackRegistry returned nil")
+	}
+}