feat(guild): persist weekly bonus exceptional user count

The handler was a stub that discarded pkt.NumUsers. Now it
looks up the player's guild and atomically accumulates the
count via a new weekly_bonus_users column on the guilds table.

schemas/patch-schema/29-guild-weekly-bonus.sql

@@ -0,0 +1,6 @@
+BEGIN;
+
+ALTER TABLE IF EXISTS public.guilds
+    ADD COLUMN IF NOT EXISTS weekly_bonus_users INT NOT NULL DEFAULT 0;
+
+END;

server/channelserver/handlers_guild_cooking.go

@@ -125,7 +125,13 @@ func handleMsgMhfGuildHuntdata(s *Session, p mhfpacket.MHFPacket) {
 
 func handleMsgMhfAddGuildWeeklyBonusExceptionalUser(s *Session, p mhfpacket.MHFPacket) {
 	pkt := p.(*mhfpacket.MsgMhfAddGuildWeeklyBonusExceptionalUser)
-	// TODO: record pkt.NumUsers to DB
+	if s.server.guildRepo != nil {
-	// must use addition
+		guild, err := s.server.guildRepo.GetByCharID(s.charID)
+		if err == nil && guild != nil {
+			if err := s.server.guildRepo.AddWeeklyBonusUsers(guild.ID, pkt.NumUsers); err != nil {
+				s.logger.Error("Failed to add weekly bonus users", zap.Error(err))
+			}
+		}
+	}
 	doAckSimpleSucceed(s, pkt.AckHandle, []byte{0x00, 0x00, 0x00, 0x00})
 }

server/channelserver/repo_guild.go

@@ -938,3 +938,12 @@ func (r *GuildRepository) ListInvitedCharacters(guildID uint32) ([]*ScoutedChara
 	}
 	return chars, nil
 }
+
+// AddWeeklyBonusUsers atomically adds numUsers to the guild's weekly bonus exceptional user count.
+func (r *GuildRepository) AddWeeklyBonusUsers(guildID uint32, numUsers uint8) error {
+	_, err := r.db.Exec(
+		"UPDATE guilds SET weekly_bonus_users = weekly_bonus_users + $1 WHERE id = $2",
+		numUsers, guildID,
+	)
+	return err
+}