fix(admin): resolve moderation, gift, and admin-panel bugs from QA

- scam/fake: enforce mutual exclusivity (scam precedence) at TL conversion, admin command, and UI toggles; both flags could render as neither
- scam/fake flicker: persist scam/fake in the Redis user base cache so cache hits no longer drop the flags
- getSavedStarGifts: hidden (unsaved) gifts are now force-excluded for non-owner viewers; same guard for get-by-ref
- convertStarGift: map already-upgraded/owner-invalid/unavailable to a clean client error instead of 500
- channel force-settings: send only changed fields (partial patch) and re-sync toggles after reload, so one setting no longer resets another
- give gifts: removed custom collectible numbers (auto sequential only); locked sender to the system account 777000
- give gifts UI: fixed picker card spacing/right gap; static (hover-play) Lottie previews on emoji + picker to stop render lag; fixed emoji ID field overflow

cmd/telesrv-admin/server.go

@@ -1371,7 +1371,6 @@ type giveGiftAPIRequest struct {
 	ModelAttributeID    int64  `json:"model_attribute_id,string"`
 	PatternAttributeID  int64  `json:"pattern_attribute_id,string"`
 	BackdropAttributeID int64  `json:"backdrop_attribute_id,string"`
-	Num                 int    `json:"num"`
 }
 
 func (s *server) handleGiveGiftAPI(w http.ResponseWriter, r *http.Request) {
@@ -1391,7 +1390,6 @@ func (s *server) handleGiveGiftAPI(w http.ResponseWriter, r *http.Request) {
 		ModelAttributeID:    body.ModelAttributeID,
 		PatternAttributeID:  body.PatternAttributeID,
 		BackdropAttributeID: body.BackdropAttributeID,
-		Num:                 body.Num,
 	}
 	result, err := s.callAdminAPI(r.Context(), "/v1/gifts/give", req)
 	writeCommandResultAPI(w, result, err)