Add Discord.js bot base with prefix commands and Winston logging

Co-authored-by: yhqe <139268606+yhqe@users.noreply.github.com>

src/commands/help.js

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+'use strict';
+
+module.exports = {
+  name: 'help',
+  description: 'Lists all available commands or shows info about a specific one.',
+  aliases: ['h', 'commands'],
+  usage: 'help [command]',
+
+  execute(client, message, args) {
+    const prefix = process.env.PREFIX || '!';
+
+    // Show info for a specific command
+    if (args.length > 0) {
+      const name = args[0].toLowerCase();
+      const command = client.commands.get(name);
+
+      if (!command) {
+        return message.reply(`No command found for \`${name}\`.`);
+      }
+
+      const lines = [`**${prefix}${command.name}**`];
+      if (command.description) lines.push(`> ${command.description}`);
+      if (command.aliases?.length)
+        lines.push(`> **Aliases:** ${command.aliases.map((a) => `\`${prefix}${a}\``).join(', ')}`);
+      if (command.usage)
+        lines.push(`> **Usage:** \`${prefix}${command.usage}\``);
+
+      return message.reply(lines.join('\n'));
+    }
+
+    // Build a deduplicated command list (ignore aliases pointing to the same command)
+    const seen = new Set();
+    const commandList = [];
+
+    for (const command of client.commands.values()) {
+      if (seen.has(command.name)) continue;
+      seen.add(command.name);
+      commandList.push(`\`${prefix}${command.name}\` — ${command.description || 'No description.'}`);
+    }
+
+    return message.reply(
+      `**Available commands:**\n${commandList.join('\n')}\n\nUse \`${prefix}help <command>\` for more details.`,
+    );
+  },
+};

src/commands/ping.js

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+'use strict';
+
+module.exports = {
+  name: 'ping',
+  description: 'Replies with Pong! and shows the bot latency.',
+  aliases: ['pong'],
+  usage: 'ping',
+
+  async execute(client, message) {
+    const sent = await message.reply('Pinging…');
+    const latency = sent.createdTimestamp - message.createdTimestamp;
+    const apiLatency = Math.round(client.ws.ping);
+
+    await sent.edit(
+      `🏓 Pong!\n> Bot latency: **${latency}ms** | API latency: **${apiLatency}ms**`,
+    );
+  },
+};