feat: 广告激励（效果图加次/体验会员，服务端限频防刷）

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

styleagent/controller/ad_controller.go

@@ -0,0 +1,26 @@
+package controller
+
+import (
+	"context"
+
+	commonHttp "slogan-agent/common"
+	"slogan-agent/styleagent/model/dto"
+	"slogan-agent/styleagent/service"
+
+	"github.com/gogf/gf/v2/frame/g"
+)
+
+type ad struct{}
+
+var Ad = new(ad)
+
+// RewardClaim 领取广告激励（限频：effect_extra 每日 2 次 / vip_trial 每日 1 次）
+func (c *ad) RewardClaim(ctx context.Context, req *dto.AdRewardClaimReq) (res *dto.AdRewardClaimRes, err error) {
+	result, err := service.AdService.Claim(ctx, commonHttp.GetUserId(g.RequestFromCtx(ctx)), req.AdType)
+	if err != nil {
+		return nil, err
+	}
+	return &dto.AdRewardClaimRes{Reward: &dto.AdRewardInfo{
+		AdType: result.AdType, RemainingToday: result.RemainingToday,
+	}}, nil
+}