feat(auth): add interactive login script for userbot session creation

scripts/login_userbot.py

@@ -0,0 +1,27 @@
+import os
+import asyncio
+from telethon import TelegramClient
+from dotenv import load_dotenv
+
+load_dotenv()
+
+API_ID = int(os.getenv("API_ID", "0"))
+API_HASH = os.getenv("API_HASH", "")
+PHONE = os.getenv("PHONE")
+SESSION_NAME = os.getenv("SESSION_NAME", "/projects/telegram-bots/copykar/sessions/collector.session")
+
+from core.proxy import get_telegram_proxy
+
+async def main():
+    os.makedirs(os.path.dirname(SESSION_NAME), exist_ok=True)
+    proxy = get_telegram_proxy()
+    print(f"Connecting to Telegram for {PHONE}...")
+    client = TelegramClient(SESSION_NAME, API_ID, API_HASH, proxy=proxy)
+    await client.start(phone=PHONE)
+    me = await client.get_me()
+    print(f"✅ Success! Logged in as: {me.first_name} (@{me.username}) [ID: {me.id}]")
+    print(f"Session saved to: {SESSION_NAME}")
+    await client.disconnect()
+
+if __name__ == "__main__":
+    asyncio.run(main())