feat(*): first mvp

backend/src/bot/handlers/start/start.py

@@ -3,7 +3,23 @@ from aiogram.filters import CommandStart
 
 router = Router()
 
+WELCOME_MESSAGE = """
+<b>Welcome to AI Chat!</b>
+
+Get started:
+1. /apikey YOUR_KEY — Set your Gemini API key
+2. /new — Create a new chat and get your Watch URL
+
+Commands:
+• /clear — Clear chat history
+• /prompt — Set custom system prompt
+• /model — Change AI model
+• /presets — Show available presets
+
+Get your API key at https://aistudio.google.com/apikey
+""".strip()
+
 
 @router.message(CommandStart())
 async def on_start(message: types.Message) -> None:
-    await message.answer("hi")
+    await message.answer(WELCOME_MESSAGE, parse_mode="HTML")