feat(idlebiz): add 'about' command to provide information about IdleBiz features

apps/idlebiz/src/commands/system/about.ts

@@ -0,0 +1,40 @@
+import { createCommand } from "@/lib/CommandHandler";
+import { ApplicationCommandType, EmbedBuilder, MessageFlags } from "discord.js";
+
+export default createCommand({
+  metadata: {
+    options: {
+      name: "about",
+      description: "Learn about IdleBiz and its features",
+      type: ApplicationCommandType.ChatInput,
+    },
+  },
+  chatInput: async (client, interaction) => {
+    const embed = new EmbedBuilder()
+      .setTitle("🏭 Welcome to IdleBiz! 🏭")
+      .setDescription(
+        "Build your empire from the ground up! Start small, dream big, and watch your business flourish while you're away."
+      )
+      .setColor("#2b2d31")
+      .addFields(
+        {
+          name: "🎮 The Ultimate Idle Tycoon Experience",
+          value:
+            "• 🏢 Manage multiple buildings and optimize production\n• 📈 Play the market and make strategic investments\n• 🤝 Trade with other players in a dynamic economy\n• ⚡️ Progress even while offline with idle mechanics\n• 🏆 Compete for dominance in the global economy",
+        },
+        {
+          name: "💡 Why Choose IdleBiz?",
+          value:
+            "• Perfect blend of strategy and idle gameplay\n• Deep economic simulation\n• Active community and trading system\n• Regular updates and new content\n• No pay-to-win mechanics",
+        }
+      )
+      .setFooter({
+        text: "Ready to start your business empire? Use /start to begin your journey!",
+      });
+
+    await interaction.reply({
+      embeds: [embed],
+      flags: [MessageFlags.Ephemeral],
+    });
+  },
+});