feat: Introduce new modules for class, inventory, leveling, and quests with expanded schema, refactor user service, and add verification scripts.

src/commands/inventory/inventory.ts

@@ -0,0 +1,42 @@
+import { createCommand } from "@/lib/utils";
+import { SlashCommandBuilder, EmbedBuilder } from "discord.js";
+import { inventoryService } from "@/modules/inventory/inventory.service";
+
+export const inventory = createCommand({
+    data: new SlashCommandBuilder()
+        .setName("inventory")
+        .setDescription("View your or another user's inventory")
+        .addUserOption(option =>
+            option.setName("user")
+                .setDescription("User to view")
+                .setRequired(false)
+        ),
+    execute: async (interaction) => {
+        await interaction.deferReply();
+
+        const targetUser = interaction.options.getUser("user") || interaction.user;
+        const items = await inventoryService.getInventory(targetUser.id);
+
+        if (!items || items.length === 0) {
+            const embed = new EmbedBuilder()
+                .setTitle(`${targetUser.username}'s Inventory`)
+                .setDescription("Inventory is empty.")
+                .setColor("Blue");
+
+            await interaction.editReply({ embeds: [embed] });
+            return;
+        }
+
+        const description = items.map(entry => {
+            return `**${entry.item.name}** x${entry.quantity}`;
+        }).join("\n");
+
+        const embed = new EmbedBuilder()
+            .setTitle(`${targetUser.username}'s Inventory`)
+            .setDescription(description)
+            .setColor("Blue")
+            .setTimestamp();
+
+        await interaction.editReply({ embeds: [embed] });
+    }
+});