feat: add ai example

packages/sdk/examples/ai.ts

@@ -0,0 +1,39 @@
+import { HctvSdk } from "../src";
+
+const botToken = process.env.BOT_TOKEN;
+const aiToken = process.env.AI_TOKEN;
+if (!botToken) {
+  throw new Error('BOT_TOKEN environment variable is required');
+}
+if (!aiToken) {
+  throw new Error('AI_TOKEN environment variable is required');
+}
+
+const sdk = new HctvSdk({ botToken: botToken })
+
+await sdk.chat.connect('bot-playground')
+console.log('connected to the chat!')
+
+sdk.chat.onMessage(async m => {
+  if (!m.message.startsWith('/ai')) return;
+  const res = await fetch('https://ai.hackclub.com/proxy/v1/chat/completions', {
+    method: 'POST',
+    headers: {
+      'Authorization': `Bearer ${aiToken}`,
+      'Content-Type': 'application/json',
+    },
+    body: JSON.stringify({
+      model: 'google/gemini-3-flash-preview',
+      messages: [
+        { role: 'system', content: 'You are a helpful assistant. Reply concisely and like if you were on a chat platform. Use lowercase.' },
+        { role: 'user', content: m.message.replace('/ai', '').trim() }
+      ],
+    }),
+  });
+  const data = await res.json();
+  const aiMessage = data.choices?.[0]?.message?.content;
+
+  if (aiMessage) {
+    sdk.chat.sendMessage(`@${m.username} ${aiMessage}`);
+  }
+})