feat(Sora): 直连生成并移除sora2api依赖

实现直连 Sora 客户端、媒体落地与清理策略\n更新网关与前端配置以支持 Sora 平台\n补齐单元测试与契约测试，新增 curl 测试脚本\n\n测试: go test ./... -tags=unit

backend/internal/handler/admin/model_handler.go

@@ -1,55 +0,0 @@
-package admin
-
-import (
-	"net/http"
-	"strings"
-
-	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
-	"github.com/Wei-Shaw/sub2api/internal/service"
-
-	"github.com/gin-gonic/gin"
-)
-
-// ModelHandler handles admin model listing requests.
-type ModelHandler struct {
-	sora2apiService *service.Sora2APIService
-}
-
-// NewModelHandler creates a new ModelHandler.
-func NewModelHandler(sora2apiService *service.Sora2APIService) *ModelHandler {
-	return &ModelHandler{
-		sora2apiService: sora2apiService,
-	}
-}
-
-// List handles listing models for a specific platform
-// GET /api/v1/admin/models?platform=sora
-func (h *ModelHandler) List(c *gin.Context) {
-	platform := strings.TrimSpace(strings.ToLower(c.Query("platform")))
-	if platform == "" {
-		response.BadRequest(c, "platform is required")
-		return
-	}
-
-	switch platform {
-	case service.PlatformSora:
-		if h.sora2apiService == nil || !h.sora2apiService.Enabled() {
-			response.Error(c, http.StatusServiceUnavailable, "sora2api not configured")
-			return
-		}
-		models, err := h.sora2apiService.ListModels(c.Request.Context())
-		if err != nil {
-			response.Error(c, http.StatusServiceUnavailable, "failed to fetch sora models")
-			return
-		}
-		ids := make([]string, 0, len(models))
-		for _, m := range models {
-			if strings.TrimSpace(m.ID) != "" {
-				ids = append(ids, m.ID)
-			}
-		}
-		response.Success(c, ids)
-	default:
-		response.BadRequest(c, "unsupported platform")
-	}
-}

backend/internal/handler/admin/model_handler_test.go

@@ -1,87 +0,0 @@
-package admin
-
-import (
-	"encoding/json"
-	"net/http"
-	"net/http/httptest"
-	"testing"
-
-	"github.com/Wei-Shaw/sub2api/internal/config"
-	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
-	"github.com/Wei-Shaw/sub2api/internal/service"
-
-	"github.com/gin-gonic/gin"
-)
-
-func TestModelHandlerListSoraSuccess(t *testing.T) {
-	gin.SetMode(gin.TestMode)
-
-	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		w.Header().Set("Content-Type", "application/json")
-		_, _ = w.Write([]byte(`{"object":"list","data":[{"id":"m1"},{"id":"m2"}]}`))
-	}))
-	t.Cleanup(upstream.Close)
-
-	cfg := &config.Config{}
-	cfg.Sora2API.BaseURL = upstream.URL
-	cfg.Sora2API.APIKey = "test-key"
-	soraService := service.NewSora2APIService(cfg)
-
-	h := NewModelHandler(soraService)
-	router := gin.New()
-	router.GET("/admin/models", h.List)
-
-	req := httptest.NewRequest(http.MethodGet, "/admin/models?platform=sora", nil)
-	recorder := httptest.NewRecorder()
-	router.ServeHTTP(recorder, req)
-
-	if recorder.Code != http.StatusOK {
-		t.Fatalf("status=%d body=%s", recorder.Code, recorder.Body.String())
-	}
-	var resp response.Response
-	if err := json.Unmarshal(recorder.Body.Bytes(), &resp); err != nil {
-		t.Fatalf("解析响应失败: %v", err)
-	}
-	if resp.Code != 0 {
-		t.Fatalf("响应 code=%d", resp.Code)
-	}
-	data, ok := resp.Data.([]any)
-	if !ok {
-		t.Fatalf("响应 data 类型错误")
-	}
-	if len(data) != 2 {
-		t.Fatalf("模型数量不符: %d", len(data))
-	}
-}
-
-func TestModelHandlerListSoraNotConfigured(t *testing.T) {
-	gin.SetMode(gin.TestMode)
-
-	h := NewModelHandler(&service.Sora2APIService{})
-	router := gin.New()
-	router.GET("/admin/models", h.List)
-
-	req := httptest.NewRequest(http.MethodGet, "/admin/models?platform=sora", nil)
-	recorder := httptest.NewRecorder()
-	router.ServeHTTP(recorder, req)
-
-	if recorder.Code != http.StatusServiceUnavailable {
-		t.Fatalf("status=%d body=%s", recorder.Code, recorder.Body.String())
-	}
-}
-
-func TestModelHandlerListInvalidPlatform(t *testing.T) {
-	gin.SetMode(gin.TestMode)
-
-	h := NewModelHandler(&service.Sora2APIService{})
-	router := gin.New()
-	router.GET("/admin/models", h.List)
-
-	req := httptest.NewRequest(http.MethodGet, "/admin/models?platform=unknown", nil)
-	recorder := httptest.NewRecorder()
-	router.ServeHTTP(recorder, req)
-
-	if recorder.Code != http.StatusBadRequest {
-		t.Fatalf("status=%d body=%s", recorder.Code, recorder.Body.String())
-	}
-}