fix(*): 质量检查 - 修复预演保存、增量同步与缺失资源恢复

backend/internal/app/channel_model_pricing_test.go

@@ -219,17 +219,7 @@ func TestRepriceTierFieldValidation(t *testing.T) {
 	}
 }
 
-func TestNormalizeChannelModelTierSelectorAcceptsResolutionTypo(t *testing.T) {
-	selector, resolution, videoSeconds, err := normalizeChannelModelTierSelector("image", ChannelModelPriceTierRequest{
-		Selector: map[string]string{"resoluton": "2K"},
-	})
-	if err != nil {
-		t.Fatal(err)
-	}
-	if selector["resolution"] != "2k" || selector["resoluton"] != "" || resolution != "*" || videoSeconds != 0 {
-		t.Fatalf("selector=%v resolution=%q videoSeconds=%d", selector, resolution, videoSeconds)
-	}
-}
+func TestBatchRepricingRollsBackOnConcurrentChange(t *testing.T) {
 	for _, target := range []string{"model", "tier"} {
 		t.Run(target, func(t *testing.T) {
 			svc, db, _ := seedRepricingModels(t)
@@ -265,3 +255,15 @@ func TestNormalizeChannelModelTierSelectorAcceptsResolutionTypo(t *testing.T) {
 		})
 	}
 }
+
+func TestNormalizeChannelModelTierSelectorAcceptsResolutionTypo(t *testing.T) {
+	selector, resolution, videoSeconds, err := normalizeChannelModelTierSelector("image", ChannelModelPriceTierRequest{
+		Selector: map[string]string{"resoluton": "2K"},
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if selector["resolution"] != "2k" || selector["resoluton"] != "" || resolution != "*" || videoSeconds != 0 {
+		t.Fatalf("selector=%v resolution=%q videoSeconds=%d", selector, resolution, videoSeconds)
+	}
+}

backend/internal/app/channel_presentation_test.go

@@ -49,7 +49,7 @@ func TestChannelPresentationUsesModelLabelsAndPublicOrder(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	if len(catalog) != 2 || catalog[0].ID != "second" || catalog[0].Name != "渠道second" || catalog[0].DisplayName != "渠道second" {
+	if len(catalog) != 2 || catalog[0].ID != "second" || catalog[0].Name != "" || catalog[0].DisplayName != "" {
 		t.Fatalf("public catalog: %#v", catalog)
 	}
 	legacy, err := svc.PublicSystemChannels()
@@ -74,7 +74,7 @@ func TestChannelPresentationUsesModelLabelsAndPublicOrder(t *testing.T) {
 		t.Fatal(err)
 	}
 	catalog, err = svc.publicSystemChannelCatalog(nil)
-	if err != nil || catalog[0].Name != "渠道second" {
+	if err != nil || catalog[0].Name != "" || catalog[0].DisplayName != "" {
 		t.Fatalf("channel name: %v %v", catalog, err)
 	}
 	for _, invalid := range []int{-1, 1000000} {

backend/internal/app/model_catalog.go

@@ -169,10 +169,12 @@ func (s *Service) publicSystemChannelCatalog(intent *ModelRequestIntent) ([]Publ
 		}
 
 		if len(publicModels) > 0 {
+			// 系统渠道的真实名称属于内部部署信息（供应商、中转站、内部命名等），
+			// 不得通过普通用户可访问的创作目录泄漏。前端只依赖 ID 做分组，名称留空后由客户端统一展示为“系统模型”。
 			result = append(result, PublicChannelCatalog{
 				ID:          channel.ID,
-				Name:        channel.Name,
-				DisplayName: channel.Name,
+				Name:        "",
+				DisplayName: "",
 				SortOrder:   channel.SortOrder,
 				Models:      publicModels,
 			})

backend/internal/app/resource_generated.go

@@ -6,8 +6,10 @@ package app
 
 import (
 	"bytes"
+	"context"
 	"encoding/base64"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"image"
 	"io"
@@ -182,22 +184,30 @@ func downloadRemoteResource(rawURL string, maxBytes int64) (remoteResourcePayloa
 	if err != nil {
 		return remoteResourcePayload{}, err
 	}
-	client := OutboundHTTPClient(90 * time.Second)
+	client := OutboundHTTPClient(3 * time.Minute)
 	req, err := http.NewRequest(http.MethodGet, parsed.String(), nil)
 	if err != nil {
 		return remoteResourcePayload{}, err
 	}
 	resp, err := client.Do(req)
 	if err != nil {
-		return remoteResourcePayload{}, err
+		// 把下载层网络错误统一映射为可公开的 502/504 文案，避免在恢复接口上被 failService
+		// 折叠成通用的“系统处理失败”。同时保留真实原因在 Cause 里供诊断日志追踪。
+		if errors.Is(err, context.DeadlineExceeded) {
+			return remoteResourcePayload{}, WrapAppError(http.StatusGatewayTimeout, "远程资源下载超时，请检查地址是否可访问或稍后重试", err)
+		}
+		return remoteResourcePayload{}, WrapAppError(http.StatusBadGateway, "远程资源下载失败，请检查地址是否可访问", err)
 	}
 	defer resp.Body.Close()
 	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
-		return remoteResourcePayload{}, fmt.Errorf("远程资源下载失败：%s", resp.Status)
+		return remoteResourcePayload{}, WrapAppError(http.StatusBadGateway, fmt.Sprintf("远程资源下载失败：%s", resp.Status), nil)
 	}
 	data, err := io.ReadAll(io.LimitReader(resp.Body, maxBytes))
 	if err != nil {
-		return remoteResourcePayload{}, err
+		if errors.Is(err, context.DeadlineExceeded) {
+			return remoteResourcePayload{}, WrapAppError(http.StatusGatewayTimeout, "远程资源下载超时，请检查地址是否可访问或稍后重试", err)
+		}
+		return remoteResourcePayload{}, WrapAppError(http.StatusBadGateway, "远程资源读取失败，请检查地址是否可访问", err)
 	}
 	if int64(len(data)) >= maxBytes {
 		return remoteResourcePayload{}, BadAuthRequest(fmt.Sprintf("远程资源必须小于 %s", formatStorageLimit(maxBytes)))