refactoring: polished some files, .env.example update

bot/handlers/client/menus.py

@@ -11,6 +11,7 @@ from bot.texts import (
     FAQ_TEXT,
     GENERAL_PROCESSING,
     GENERAL_SUCCESS,
+    NO_SUBSCRIPTION,
     NOTHING_PLACEHOLDER,
 )
 from db.models.users import User
@@ -122,11 +123,15 @@ async def sub_info(
     )
     sub = await deps.subscriptions_repository.get_subscription_by_user_id(session, cb.from_user.id)
 
-    if not user:
-        await cb.answer(CALLBACK_FALLBACK)
+    if not rw_user:
+        await cb.message.edit_text(NO_SUBSCRIPTION, reply_markup=return_to_menu)
         return
 
-    if not sub:
+    if not user:
+        await cb.answer("1" + CALLBACK_FALLBACK)
+        return
+
+    if rw_user and not sub:
         try:
             dto = SubscriptionPlan(
                 devices=rw_user.hwid_device_limit,
@@ -143,7 +148,7 @@ async def sub_info(
                 plan_price_paid=utils.calculate_price(dto),
             )
         except Exception:
-            await cb.answer(CALLBACK_FALLBACK)
+            await cb.answer("2" + CALLBACK_FALLBACK)
             return
 
     await cb.message.edit_text(