feat(assets): 素材回收站与画布历史 - 合并 PR #370 并修复删除一致性

backend/internal/service/runtime_policy_test.go

@@ -136,3 +136,39 @@ func TestRuntimePolicySaveAndResetTakeEffectImmediately(t *testing.T) {
 		t.Fatalf("reset active task limit = %d, error = %v", effective.Task.ActiveTaskLimit, err)
 	}
 }
+
+func TestRuntimePolicyBackfillsRecycleBinRetentionForLegacyJSON(t *testing.T) {
+	db, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := db.AutoMigrate(&model.SystemSetting{}); err != nil {
+		t.Fatal(err)
+	}
+	legacy := defaultRuntimePolicy()
+	encoded, err := json.Marshal(legacy)
+	if err != nil {
+		t.Fatal(err)
+	}
+	var value map[string]any
+	if err := json.Unmarshal(encoded, &value); err != nil {
+		t.Fatal(err)
+	}
+	resource := value["resource"].(map[string]any)
+	delete(resource, "recycleBinRetentionDays")
+	encoded, err = json.Marshal(value)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := db.Create(&model.SystemSetting{Key: runtimePolicySettingKey, ValueJSON: string(encoded), UpdatedBy: "admin"}).Error; err != nil {
+		t.Fatal(err)
+	}
+
+	policy, err := New(repository.New(db), t.TempDir()).RuntimePolicy()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if policy.Resource.RecycleBinRetentionDays != 30 {
+		t.Fatalf("legacy recycle bin retention = %d, want 30", policy.Resource.RecycleBinRetentionDays)
+	}
+}