增加2.5模型调用

backend/internal/templates/service.go

@@ -20,6 +20,7 @@ var (
 
 type Settings struct {
 	Engine       string  `json:"engine,omitempty"`
+	Model        string  `json:"model,omitempty"`
 	Width        int     `json:"width,omitempty"`
 	Height       int     `json:"height,omitempty"`
 	ForceSingle  *bool   `json:"forceSingle,omitempty"`
@@ -231,6 +232,10 @@ func normalizeSettings(value Settings) Settings {
 	if value.Engine != "jimeng" && value.Engine != "evolink" && value.Engine != "bailian" && value.Engine != "seedream" {
 		value.Engine = ""
 	}
+	value.Model = strings.TrimSpace(value.Model)
+	if value.Engine != "evolink" || len(value.Model) > 120 {
+		value.Model = ""
+	}
 	if value.Width < 1 || value.Height < 1 {
 		value.Width, value.Height = 0, 0
 	} else {

backend/internal/templates/service_test.go

@@ -86,6 +86,25 @@ func TestServiceNormalizesAndScopesTemplates(t *testing.T) {
 	}
 }
 
+func TestTemplateSettingsPreserveEvoLinkModelAndLegacyEmptyModel(t *testing.T) {
+	service := NewService(&memoryCatalog{}, nil, func() string { return "tmpl_model" })
+	created, err := service.Create(context.Background(), "owner", CreateCommand{
+		Name: "Flare", Prompt: "draw", Settings: Settings{Engine: "evolink", Model: " gpt-image-2.5-flare ", Quality: "medium"},
+	})
+	if err != nil || created.Settings.Model != "gpt-image-2.5-flare" {
+		t.Fatalf("created=%#v err=%v", created, err)
+	}
+	legacy, err := service.Create(context.Background(), "owner", CreateCommand{
+		Name: "Legacy", Prompt: "draw", Settings: Settings{Engine: "evolink"},
+	})
+	if err != nil || legacy.Settings.Model != "" {
+		t.Fatalf("legacy=%#v err=%v", legacy, err)
+	}
+	if got := normalizeSettings(Settings{Engine: "jimeng", Model: "gpt-image-2.5-flare"}); got.Model != "" {
+		t.Fatalf("cross-engine model=%#v", got)
+	}
+}
+
 func TestServiceUpdateDeleteAndNotFound(t *testing.T) {
 	now := time.Now().UTC()
 	catalog := &memoryCatalog{items: []Template{{ID: "t1", OwnerID: "owner", Name: "old", Prompt: "p", Settings: Settings{}, CreatedAt: now, UpdatedAt: now}}}