Enhance giveaway job handling and update environment configuration

- Added support for a new `giveawayCreate` job in the bot's job processing, allowing for giveaways to be created via the WebUI.
- Introduced `runGiveawayCreateJob` function to handle the creation of giveaways, ensuring consistent behavior with existing commands.
- Updated `.env.example` to clarify the usage of `BOT_TOKEN` for both the bot and WebUI, enhancing documentation for environment variables.
- Added `bullmq` dependency in the WebUI package for job management capabilities.

apps/bot/src/modules/giveaways/service.ts

@@ -408,6 +408,31 @@ export async function deleteGiveaway(context: BotContext, giveawayId: string): P
   await context.prisma.giveaway.delete({ where: { id: giveawayId } });
 }
 
+/**
+ * Entry point for the `giveawayCreate` BullMQ job, enqueued by the WebUI
+ * dashboard (which has no discord.js Client to post the giveaway message
+ * itself). Resolves the guild's locale and delegates to {@link startGiveaway}
+ * so dashboard-created giveaways behave identically to `/giveaway start`.
+ */
+export async function runGiveawayCreateJob(
+  context: BotContext,
+  params: {
+    guildId: string;
+    channelId: string;
+    hostId: string;
+    prize: string;
+    winnerCount: number;
+    durationMs: number;
+    requiredRoleId?: string | null;
+    requiredLevel?: number | null;
+    requiredMemberDays?: number | null;
+  }
+): Promise<{ id: string }> {
+  const locale = await getGuildLocale(context.prisma, params.guildId);
+  const giveaway = await startGiveaway(context, params, locale);
+  return { id: giveaway.id };
+}
+
 export async function listActiveGiveaways(
   context: BotContext,
   guildId: string