fix: creating the first ticket in a new guild

Previously required `sync`ing (or restarting) to avoid the ticket number error.

src/lib/tickets/manager.js

@@ -135,7 +135,14 @@ module.exports = class TicketManager {
 		return await this.client.keyv.get(cacheKey);
 	}
 
-	getNextNumber(guildId) {
+	async getNextNumber(guildId) {
+		if (this.$numbers[guildId] === undefined) {
+			const { _max: { number: max } } = await this.client.prisma.ticket.aggregate({
+				_max: { number: true },
+				where: { guildId },
+			});
+			this.client.tickets.$numbers[guildId] = max ?? 0;
+		}
 		this.$numbers[guildId] += 1;
 		return this.$numbers[guildId];
 	}
@@ -379,7 +386,7 @@ module.exports = class TicketManager {
 		const guild = this.client.guilds.cache.get(category.guild.id);
 		const getMessage = this.client.i18n.getLocale(category.guild.locale);
 		const creator = await guild.members.fetch(interaction.user.id);
-		const number = this.getNextNumber(category.guild.id);
+		const number = await this.getNextNumber(category.guild.id);
 		const channelName = category.channelName
 			.replace(/{+\s?(user)?name\s?}+/gi, creator.user.username)
 			.replace(/{+\s?(nick|display)(name)?\s?}+/gi, creator.displayName)