feat: 生成接口支持场景（occasion，默认通勤，评分/LLM 依据）

styleagent/model/dto/outfit_generation_task_dto.go

@@ -9,6 +9,7 @@ type OutfitGenerateReq struct {
 	StartDate string `v:"required|date" json:"start_date"`
 	EndDate   string `v:"required|date" json:"end_date"`
 	Location  string `v:"required" json:"location"`
+	Occasion  string `v:"in:通勤,约会,聚会,运动" json:"occasion"`
 }
 
 type OutfitGenerateRes struct {

styleagent/service/outfit_generation_task_service.go

@@ -41,10 +41,18 @@ func (s *outfitService) Generate(ctx context.Context, userId int64, req *dto.Out
 		return 0, err
 	}
 	// 异步执行：传入独立 ctx（请求结束不中断任务）
-	go runGenerateTask(gctx.New(), taskId, userId)
+	go runGenerateTask(gctx.New(), taskId, userId, normalizeOccasion(req.Occasion))
 	return taskId, nil
 }
 
+// normalizeOccasion 空场景默认通勤（评分引擎按 通勤/约会/聚会/运动 匹配）
+func normalizeOccasion(o string) string {
+	if o == "" {
+		return "通勤"
+	}
+	return o
+}
+
 // StartWorker 服务启动时恢复未完成任务（标记失败，避免重启后重复消耗 LLM 费用）
 func (s *outfitService) StartWorker(ctx context.Context) {
 	tasks, err := dao.OutfitGenTask.ListUnfinished(ctx)
@@ -59,7 +67,7 @@ func (s *outfitService) StartWorker(ctx context.Context) {
 }
 
 // runGenerateTask 任务核心流程：planning → scoring → done/failed
-func runGenerateTask(ctx context.Context, taskId, userId int64) {
+func runGenerateTask(ctx context.Context, taskId, userId int64, occasion string) {
 	setTask := func(status, msg string) {
 		_ = dao.OutfitGenTask.UpdateStatus(ctx, taskId, status, msg)
 	}
@@ -109,7 +117,6 @@ func runGenerateTask(ctx context.Context, taskId, userId int64) {
 	// 4. LLM 规划（1 次调用）
 	hairstyles := hairstyleListText(ctx)
 	bodyDesc := bodyDescText(ctx, userId)
-	occasion := "通勤"
 	candidates := make([]agent.CandidateData, 0, len(sets)*3)
 	for si, set := range sets {
 		for _, it := range set.Items {

styleagent/service/outfit_generation_task_service_test.go

@@ -0,0 +1,40 @@
+package service
+
+import (
+	"context"
+	"testing"
+
+	"github.com/gogf/gf/v2/frame/g"
+
+	_ "github.com/gogf/gf/contrib/drivers/sqlite/v2"
+	"slogan-agent/styleagent/model/dto"
+)
+
+func TestGenerateReqOccasionValidation(t *testing.T) {
+	valid := []string{"", "通勤", "约会", "聚会", "运动"}
+	for _, v := range valid {
+		req := &dto.OutfitGenerateReq{
+			StartDate: "2026-08-01", EndDate: "2026-08-02",
+			Location: "上海", Occasion: v,
+		}
+		if err := g.Validator().Data(req).Run(context.Background()); err != nil {
+			t.Fatalf("occasion %q 应通过校验: %v", v, err)
+		}
+	}
+	req := &dto.OutfitGenerateReq{
+		StartDate: "2026-08-01", EndDate: "2026-08-02",
+		Location: "上海", Occasion: "随便",
+	}
+	if err := g.Validator().Data(req).Run(context.Background()); err == nil {
+		t.Fatal("非法 occasion 应被拒绝")
+	}
+}
+
+func TestNormalizeOccasion(t *testing.T) {
+	if got := normalizeOccasion(""); got != "通勤" {
+		t.Fatalf("空场景应默认通勤, got %q", got)
+	}
+	if got := normalizeOccasion("约会"); got != "约会" {
+		t.Fatalf("非空场景应原样返回, got %q", got)
+	}
+}