Generate VPN plans text dynamically with multiplier and real tg username

Agent-Logs-Url: https://github.com/kr0sh512/tt-simple/sessions/bc21e448-4bad-4522-8609-1b248a8dc082

Co-authored-by: kr0sh512 <46405586+kr0sh512@users.noreply.github.com>

bot.py

@@ -305,16 +305,21 @@ class VpnBot:
         )
 
     async def cmd_start(self, message: Message) -> None:
+        username = f"tg{message.from_user.id}"
+        current = await self.marzban.get_user(username)
+        multiplier = self._extract_price_multiplier((current or {}).get("note"))
         kb = InlineKeyboardBuilder()
-        for months, stars in PLANS.items():
-            kb.button(text=f"{months} month — ⭐️{stars}", callback_data=f"buy:{months}")
+        plan_lines: list[str] = []
+        for months, base_stars in PLANS.items():
+            month_label = "month" if months == 1 else "months"
+            stars = self._stars_with_multiplier(base_stars, multiplier)
+            kb.button(text=f"{months} {month_label} — ⭐️{stars}", callback_data=f"buy:{months}")
+            plan_lines.append(f"• {months} {month_label} — {stars} stars")
         kb.adjust(1)
         await message.answer(
             "VPN subscription plans:\n"
-            "• 1 month — 100 stars\n"
-            "• 3 months — 270 stars\n"
-            "• 6 months — 500 stars\n\n"
-            "Username in VPN panel: <code>tg{your_telegram_id}</code>",
+            + "\n".join(plan_lines)
+            + f"\n\nUsername in VPN panel: <code>{username}</code>",
             reply_markup=kb.as_markup(),
         )