feat: add tenant content management features for superadmin

- Implemented API endpoints for listing tenant contents and updating content status.
- Added Swagger documentation for new endpoints:
  - GET /super/v1/tenants/{tenantID}/contents
  - PATCH /super/v1/tenants/{tenantID}/contents/{contentID}/status
- Created DTOs for content item and status update form.
- Enhanced frontend to support content management in the tenant detail page.
- Added search and filter functionalities for tenant contents.
- Implemented unpublish functionality with confirmation dialog.
- Updated service layer to handle new content management logic.

backend/app/http/super/dto/content.go

@@ -0,0 +1,44 @@
+package dto
+
+import (
+	"strings"
+	"time"
+
+	"quyun/v2/app/requests"
+	"quyun/v2/database/models"
+	"quyun/v2/pkg/consts"
+)
+
+// TenantContentFilter defines list query filters for tenant contents (superadmin).
+type TenantContentFilter struct {
+	requests.Pagination      `json:",inline" query:",inline"`
+	requests.SortQueryFilter `json:",inline" query:",inline"`
+
+	Keyword *string `json:"keyword,omitempty" query:"keyword"`
+
+	Status     *consts.ContentStatus     `json:"status,omitempty" query:"status"`
+	Visibility *consts.ContentVisibility `json:"visibility,omitempty" query:"visibility"`
+
+	UserID *int64 `json:"user_id,omitempty" query:"user_id"`
+
+	PublishedAtFrom *time.Time `json:"published_at_from,omitempty" query:"published_at_from"`
+	PublishedAtTo   *time.Time `json:"published_at_to,omitempty" query:"published_at_to"`
+	CreatedAtFrom   *time.Time `json:"created_at_from,omitempty" query:"created_at_from"`
+	CreatedAtTo     *time.Time `json:"created_at_to,omitempty" query:"created_at_to"`
+}
+
+func (f *TenantContentFilter) KeywordTrimmed() string {
+	if f == nil || f.Keyword == nil {
+		return ""
+	}
+	return strings.TrimSpace(*f.Keyword)
+}
+
+type SuperTenantContentItem struct {
+	Content *models.Content      `json:"content,omitempty"`
+	Price   *models.ContentPrice `json:"price,omitempty"`
+	Owner   *SuperUserLite       `json:"owner,omitempty"`
+
+	StatusDescription     string `json:"status_description,omitempty"`
+	VisibilityDescription string `json:"visibility_description,omitempty"`
+}

backend/app/http/super/dto/content_status.go

@@ -0,0 +1,8 @@
+package dto
+
+import "quyun/v2/pkg/consts"
+
+type SuperTenantContentStatusUpdateForm struct {
+	// Status supports: unpublished (下架) / blocked (封禁)
+	Status consts.ContentStatus `json:"status" validate:"required,oneof=unpublished blocked"`
+}