feat: 新增 IndexNow 批量提交接口（主页 + 专题）

POST /api/web/seopush/indexnow/bulk?limit=10
- 组装主页 "/" 和前 N-1 个专题（playlet_theme 按 Rank 降序）URL
- 调用 pub/seo/indexnow.BatchIndexNowSubmitter 提交到 api.indexnow.org
- 返回提交的 URL 列表 + IndexNow 回执（含各引擎 HTTP 状态码）
- Admin 鉴权（走 /api/web/* 的 auth 中间件）

部署前提：
- web.yaml 配置 indexNow.key
- Web 根目录可访问 /{key}.txt（内容为 key 本身）作为 IndexNow 域名验证

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

web/service/srv_seopush/bulk.go

@@ -0,0 +1,75 @@
+package srv_seopush
+
+import (
+	"context"
+	"fmt"
+	"strings"
+
+	"hkdj-web-server/pub/common/log"
+	"hkdj-web-server/pub/common/srvdef"
+	"hkdj-web-server/pub/models/playletthememod"
+	"hkdj-web-server/pub/seo/h5path"
+	seoindexnow "hkdj-web-server/pub/seo/indexnow"
+	"hkdj-web-server/web/webg"
+
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/mongo/options"
+)
+
+// BulkIndexNowResult 批量提交结果，包含提交的 URL 列表和 IndexNow 原始回执。
+type BulkIndexNowResult struct {
+	URLs       []string               `json:"urls"`
+	SubmitInfo *seoindexnow.BatchResult `json:"submitInfo"`
+}
+
+// SubmitHomeAndThemes 组装主页 + 前 N 个专题（按 Rank 降序）URL，批量提交 IndexNow。
+// limit 为 URL 总数（包含主页），默认 10；小于等于 1 时视为仅主页。
+func SubmitHomeAndThemes(ctx context.Context, limit int) (*BulkIndexNowResult, *srvdef.SrvErr) {
+	if limit <= 0 {
+		limit = 10
+	}
+	webAddr := SEOBaseURL(ctx)
+	if webAddr == "" {
+		return nil, srvdef.New(srvdef.ErrNoData, "WebAddr 未配置", "")
+	}
+	key := strings.TrimSpace(webg.Conf.IndexNow.Key)
+	if key == "" {
+		return nil, srvdef.New(srvdef.ErrNoData, "indexNow.key 未配置", "")
+	}
+
+	urls := make([]string, 0, limit)
+	urls = append(urls, h5path.Abs(webAddr, "/"))
+	if remain := limit - 1; remain > 0 {
+		themes, err := playletthememod.FindManyPlayletTheme(ctx,
+			bson.M{playletthememod.FN.PlayletTheme.Status: true},
+			options.Find().
+				SetSort(bson.M{playletthememod.FN.PlayletTheme.Rank: -1}).
+				SetLimit(int64(remain)))
+		if err == nil {
+			for _, t := range themes {
+				if t == nil || t.Id <= 0 {
+					continue
+				}
+				path := h5path.TopicDetail(t.Slug, t.Id)
+				if path == "" {
+					continue
+				}
+				urls = append(urls, h5path.Abs(webAddr, path))
+			}
+		} else {
+			log.Warn("seopush bulk: list themes failed", log.E(err))
+		}
+	}
+
+	config, cerr := seoindexnow.BuildConfig(webAddr, key)
+	if cerr != nil {
+		return nil, srvdef.New(srvdef.Failure, fmt.Sprintf("构造 IndexNow 配置失败: %v", cerr), "")
+	}
+	result := seoindexnow.NewBatchIndexNowSubmitter(config).SubmitBatch(urls)
+	log.Info("seopush bulk: indexnow submitted",
+		log.Any("urls", urls),
+		log.Any("statusCodes", result.StatusCodes),
+		log.Any("success", result.SuccessCount),
+		log.Any("fail", result.FailCount))
+	return &BulkIndexNowResult{URLs: urls, SubmitInfo: result}, nil
+}