refactor: replace direct EmbedBuilder usage with a new createBaseEmbed helper for consistent embed creation

src/commands/admin/listing.ts

@@ -1,7 +1,6 @@
 import { createCommand } from "@/lib/utils";
 import {
     SlashCommandBuilder,
-    EmbedBuilder,
     ActionRowBuilder,
     ButtonBuilder,
     ButtonStyle,
@@ -10,7 +9,7 @@ import {
     MessageFlags
 } from "discord.js";
 import { inventoryService } from "@/modules/inventory/inventory.service";
-import { createSuccessEmbed, createErrorEmbed } from "@lib/embeds";
+import { createSuccessEmbed, createErrorEmbed, createBaseEmbed } from "@lib/embeds";
 import { UserError } from "@/lib/errors";
 import { items } from "@/db/schema";
 import { ilike, isNotNull, and } from "drizzle-orm";
@@ -54,11 +53,8 @@ export const listing = createCommand({
             return;
         }
 
-        const embed = new EmbedBuilder()
-            .setTitle(`Shop: ${item.name}`)
-            .setDescription(item.description || "No description available.")
+        const embed = createBaseEmbed(`Shop: ${item.name}`, item.description || "No description available.", "Green")
             .addFields({ name: "Price", value: `${item.price} 🪙`, inline: true })
-            .setColor("Green")
             .setThumbnail(item.iconUrl || null)
             .setImage(item.imageUrl || null)
             .setFooter({ text: "Click the button below to purchase instantly." });