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

internal/rpc/convert_users.go

@@ -53,7 +53,9 @@ func tgUser(u domain.User) *tg.User {
 		Phone:         u.Phone,
 		Verified:      u.Verified,
 		Scam:          u.Scam,
-		Fake:          u.Fake,
+		// scam and fake are mutually exclusive in Telegram; a peer flagged as
+		// both would render neither badge on clients. scam takes precedence.
+		Fake:          u.Fake && !u.Scam,
 		Support:       u.Support,
 		Contact:       u.Contact,
 		MutualContact: u.Mutual,