admin: gift granting, collectible attribute/number control, and Layer 228 moderation tools

Admin console additions (Layer 228):
- Give Gifts: dedicated tab with sorted Lottie/TGS gift picker + inline form; grant any catalog gift to a user/channel from 777000 (no charge)
- Upgraded/collectible delivery: mint a unique gift with admin-selected model/pattern/backdrop and custom number, or random/auto (DB FK + UNIQUE(gift_id,num) enforce invariants)
- SCAM/FAKE flags for users/channels (migration 0136) with configurable profile warning (TELESRV_SCAM_WARNING/TELESRV_FAKE_WARNING)
- Support toggle, force channel settings incl. gigagroup (migration 0137), username management, cosmetic color/emoji-status
- Emoji admin tab (custom emoji list + document IDs + Lottie/TGS preview)
- Bot management; soft UI / dark theme
Wired through Router -> admin.Service -> adminapi -> BFF -> React panel (en/zh/ru).

internal/store/memory/channel_settings.go

@@ -197,6 +197,110 @@ func (s *ChannelStore) SetChannelVerified(_ context.Context, channelID int64, ve
 	return cloneChannel(channel), nil
 }
 
+func (s *ChannelStore) SetChannelScamFake(_ context.Context, channelID int64, scam, fake bool) (domain.Channel, error) {
+	if channelID == 0 {
+		return domain.Channel{}, domain.ErrChannelInvalid
+	}
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	channel, ok := s.channels[channelID]
+	if !ok || channel.Deleted {
+		return domain.Channel{}, domain.ErrChannelInvalid
+	}
+	channel.Scam = scam
+	channel.Fake = fake
+	s.channels[channelID] = channel
+	return cloneChannel(channel), nil
+}
+
+func (s *ChannelStore) SetChannelAdminSettings(_ context.Context, channelID int64, patch domain.ChannelAdminSettings) (domain.Channel, error) {
+	if channelID == 0 {
+		return domain.Channel{}, domain.ErrChannelInvalid
+	}
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	channel, ok := s.channels[channelID]
+	if !ok || channel.Deleted {
+		return domain.Channel{}, domain.ErrChannelInvalid
+	}
+	if patch.Gigagroup != nil {
+		channel.Gigagroup = *patch.Gigagroup
+	}
+	if patch.AntiSpam != nil {
+		channel.AntiSpam = *patch.AntiSpam
+	}
+	if patch.ParticipantsHidden != nil {
+		channel.ParticipantsHidden = *patch.ParticipantsHidden
+	}
+	if patch.NoForwards != nil {
+		channel.NoForwards = *patch.NoForwards
+	}
+	if patch.JoinToSend != nil {
+		channel.JoinToSend = *patch.JoinToSend
+	}
+	if patch.JoinRequest != nil {
+		channel.JoinRequest = *patch.JoinRequest
+	}
+	if patch.SlowmodeSeconds != nil {
+		channel.SlowmodeSeconds = *patch.SlowmodeSeconds
+	}
+	s.channels[channelID] = channel
+	return cloneChannel(channel), nil
+}
+
+func (s *ChannelStore) SetChannelUsernameAdmin(_ context.Context, channelID int64, username string) (domain.Channel, error) {
+	if channelID == 0 {
+		return domain.Channel{}, domain.ErrChannelInvalid
+	}
+	username = strings.TrimSpace(strings.TrimPrefix(username, "@"))
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	channel, ok := s.channels[channelID]
+	if !ok || channel.Deleted {
+		return domain.Channel{}, domain.ErrChannelInvalid
+	}
+	channel.Username = username
+	s.channels[channelID] = channel
+	return cloneChannel(channel), nil
+}
+
+func (s *ChannelStore) SetChannelColorAdmin(_ context.Context, channelID int64, forProfile bool, color domain.ChannelPeerColor) (domain.Channel, error) {
+	if channelID == 0 {
+		return domain.Channel{}, domain.ErrChannelInvalid
+	}
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	channel, ok := s.channels[channelID]
+	if !ok || channel.Deleted {
+		return domain.Channel{}, domain.ErrChannelInvalid
+	}
+	if forProfile {
+		channel.ProfileColor = color
+	} else {
+		channel.Color = color
+	}
+	s.channels[channelID] = channel
+	return cloneChannel(channel), nil
+}
+
+func (s *ChannelStore) SetChannelEmojiStatusAdmin(_ context.Context, channelID int64, status domain.ChannelEmojiStatus) (domain.Channel, error) {
+	if channelID == 0 {
+		return domain.Channel{}, domain.ErrChannelInvalid
+	}
+	if status.DocumentID == 0 {
+		status.Until = 0
+	}
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	channel, ok := s.channels[channelID]
+	if !ok || channel.Deleted {
+		return domain.Channel{}, domain.ErrChannelInvalid
+	}
+	channel.EmojiStatus = status
+	s.channels[channelID] = channel
+	return cloneChannel(channel), nil
+}
+
 func (s *ChannelStore) ResolvePublicChannelUsername(_ context.Context, viewerUserID int64, username string) (domain.Channel, bool, error) {
 	_ = viewerUserID // zero is the anonymous public-web view; no membership state is projected.
 	username = strings.ToLower(strings.TrimSpace(strings.TrimPrefix(username, "@")))

internal/store/memory/users.go

@@ -283,6 +283,33 @@ func (s *UserStore) SetVerified(_ context.Context, userID int64, verified bool)
 	return u, nil
 }
 
+// SetSupport 设置/取消用户的 support 标记（与 postgres 语义一致）。
+func (s *UserStore) SetSupport(_ context.Context, userID int64, support bool) (domain.User, error) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	u, ok := s.byID[userID]
+	if !ok || u.Deleted {
+		return domain.User{}, domain.ErrUserNotFound
+	}
+	u.Support = support
+	s.byID[userID] = u
+	return u, nil
+}
+
+// SetScamFake 设置/取消用户的 scam 与 fake 标记（与 postgres 语义一致）。
+func (s *UserStore) SetScamFake(_ context.Context, userID int64, scam, fake bool) (domain.User, error) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	u, ok := s.byID[userID]
+	if !ok || u.Deleted {
+		return domain.User{}, domain.ErrUserNotFound
+	}
+	u.Scam = scam
+	u.Fake = fake
+	s.byID[userID] = u
+	return u, nil
+}
+
 // SweepExpiredPremium 清空到期会员行并返回清理后的用户（与 postgres 语义一致）。
 func (s *UserStore) SweepExpiredPremium(_ context.Context, now int64, limit int) ([]domain.User, error) {
 	if limit <= 0 {