feat(skills): 技能管理 - 增加可选的平台子分类策展 (#693)

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

backend/internal/app/skill_curation_bridge.go

@@ -0,0 +1,16 @@
+package app
+
+import (
+	"infinite-canvas/backend/internal/model"
+	"infinite-canvas/backend/internal/skills"
+)
+
+type SkillCuration = skills.SkillCuration
+type SkillCurationUpdate = skills.SkillCurationUpdate
+
+func (s *Service) SkillCuration(actor *model.User, admin bool) (*SkillCuration, error) {
+	return s.skillDomain().SkillCuration(actor, admin)
+}
+func (s *Service) UpdateSkillCuration(actor *model.User, req SkillCurationUpdate, requestID string) (*SkillCuration, error) {
+	return s.skillDomain().UpdateSkillCuration(actor, req, requestID)
+}