fix(*): 模型选择 - 修复系统渠道 Logo 搜索与前台模型模式误判

backend/internal/service/task_creation_test.go

@@ -1,6 +1,15 @@
 package service
 
-import "testing"
+import (
+	"strings"
+	"testing"
+
+	"infinite-canvas/backend/internal/model"
+	"infinite-canvas/backend/internal/repository"
+
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+)
 
 func TestTaskInputUsesWorkflowProvider(t *testing.T) {
 	tests := []struct {
@@ -26,3 +35,49 @@ func TestTaskInputUsesWorkflowProvider(t *testing.T) {
 		})
 	}
 }
+
+func TestResolveTaskModelSelectionAllowsExplicitSystemChannelWhenFrontendModelsEnabled(t *testing.T) {
+	db, err := gorm.Open(sqlite.Open("file:"+newID()+"?mode=memory&cache=shared"), &gorm.Config{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := db.AutoMigrate(&model.ModelChannel{}, &model.ChannelModel{}, &model.ChannelModelPriceTier{}); err != nil {
+		t.Fatal(err)
+	}
+	channel := model.ModelChannel{ID: "channel-1", Scope: model.ChannelScopeSystem, Enabled: true, Name: "Agnes"}
+	channelModel := model.ChannelModel{
+		ID: "channel-model-1", ChannelID: channel.ID, ModelKey: "agnes-video-2.5", Capability: "video",
+		Protocol: model.ChannelInterfaceNewAPIVideo, BillingMode: "per_second", PriceConfigured: true, Enabled: true,
+	}
+	if err := db.Create(&channel).Error; err != nil {
+		t.Fatal(err)
+	}
+	if err := db.Create(&channelModel).Error; err != nil {
+		t.Fatal(err)
+	}
+	input, err := normalizeTaskInput(map[string]any{
+		"mode":   "video",
+		"config": providerConfig{ChannelID: channel.ID, Model: channelModel.ModelKey, InterfaceType: string(channelModel.Protocol)},
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	routed, resolvedInput, err := (&Service{repo: repository.New(db)}).resolveTaskModelSelection(input, "", "canvas_video", "", true)
+	if err != nil {
+		t.Fatalf("resolveTaskModelSelection() error = %v", err)
+	}
+	if routed != nil || resolvedInput["config"] == nil {
+		t.Fatalf("resolveTaskModelSelection() routed = %#v, input = %#v", routed, resolvedInput)
+	}
+}
+
+func TestResolveTaskModelSelectionStillRequiresLogicalModelWithoutExplicitSystemChannel(t *testing.T) {
+	_, _, err := (&Service{}).resolveTaskModelSelection(map[string]any{
+		"mode":   "video",
+		"config": map[string]any{"model": "agnes-video-2.5"},
+	}, "", "canvas_video", "", true)
+	if err == nil || !strings.Contains(err.Error(), "logicalModelId") {
+		t.Fatalf("resolveTaskModelSelection() error = %v, want logicalModelId validation", err)
+	}
+}