feat(enterprise-site): add WordPress support and scheduled auto-publish to sites

Add WordPress as an enterprise-site CMS type alongside pbootcms, and let
schedule tasks auto-publish generated articles to enterprise sites.

- WordPress connection/publisher service and tests; register wordpress
  media platform and relax cms_type CHECK constraint
- New publish_enterprise_site_targets JSONB column on schedule_tasks with
  array type constraint; thread targets through scheduler dispatch,
  prompt/KOL generation, and worker
- Admin UI: enterprise-site targets in generate/schedule/publish flows,
  KOL package form, MediaView, and i18n strings

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

server/internal/tenant/app/kol_generation_service.go

@@ -39,22 +39,23 @@ type KolGenerationSubmitResponse struct {
 }
 
 type ScheduleKolGenerationInput struct {
-	ScheduleTaskID       int64
-	OperatorID           *int64
-	TenantID             int64
-	WorkspaceID          int64
-	BrandID              *int64
-	SubscriptionPromptID int64
-	Name                 string
-	Variables            map[string]any
-	EnableWebSearch      bool
-	KnowledgeGroupIDs    []int64
-	AutoPublish          bool
-	PublishAccountIDs    []string
-	CoverAssetURL        *string
-	CoverImageAssetID    *int64
-	GenerateCount        int
-	ScheduledFor         time.Time
+	ScheduleTaskID               int64
+	OperatorID                   *int64
+	TenantID                     int64
+	WorkspaceID                  int64
+	BrandID                      *int64
+	SubscriptionPromptID         int64
+	Name                         string
+	Variables                    map[string]any
+	EnableWebSearch              bool
+	KnowledgeGroupIDs            []int64
+	AutoPublish                  bool
+	PublishAccountIDs            []string
+	PublishEnterpriseSiteTargets []ScheduleEnterpriseSiteTarget
+	CoverAssetURL                *string
+	CoverImageAssetID            *int64
+	GenerateCount                int
+	ScheduledFor                 time.Time
 }
 
 type KolSubscriptionPromptSchemaResponse struct {
@@ -465,6 +466,7 @@ func attachKolScheduleTaskInput(input map[string]any, schedule ScheduleKolGenera
 	if schedule.AutoPublish {
 		input["schedule_auto_publish"] = true
 		input["schedule_publish_account_ids"] = schedule.PublishAccountIDs
+		input["schedule_publish_enterprise_site_targets"] = schedule.PublishEnterpriseSiteTargets
 		if schedule.CoverAssetURL != nil {
 			input["schedule_cover_asset_url"] = strings.TrimSpace(*schedule.CoverAssetURL)
 		}