Refactor subscription renewal process to utilize panel webhook

- Removed the recurring billing task from the bot, shifting the auto-renew functionality to the panel webhook service, which now triggers renewals 24 hours before expiry.
- Updated service dependencies to wire the subscription service with the panel webhook for seamless renewal handling.
- Adjusted the Subscription model to enable auto-renew by default, enhancing subscription management.

bot/main_bot.py

@@ -293,36 +293,7 @@ async def run_bot(settings_param: Settings):
 
     main_tasks.append(asyncio.create_task(web_server_task(), name="AIOHTTPServerTask"))
 
-    async def recurring_billing_task():
-        # Run periodic check to bill 1 day before expiry
-        async_session_factory = dp.get("async_session_factory")
-        subscription_service = dp.get("subscription_service")
-        if not async_session_factory or not subscription_service:
-            logging.warning("Recurring billing task: dependencies missing; task not started")
-            return
-        while True:
-            try:
-                async with async_session_factory() as session:
-                    # Find subscriptions ending in 1 day
-                    subs = await subscription_service.get_subscriptions_ending_soon(session, 1)
-                    # We need actual Subscription objects; reuse DAL directly
-                    from db.dal import subscription_dal
-                    subs_models = await subscription_dal.get_subscriptions_near_expiration(session, 1)
-                    handled = 0
-                    for sub in subs_models:
-                        try:
-                            ok = await subscription_service.charge_subscription_renewal(session, sub)
-                            handled += 1 if ok else 0
-                        except Exception:
-                            logging.exception("Auto-renew attempt failed")
-                    if handled:
-                        await session.commit()
-            except Exception:
-                logging.exception("Recurring billing iteration failed")
-            # Sleep 1 hour between scans
-            await asyncio.sleep(3600)
-
-    main_tasks.append(asyncio.create_task(recurring_billing_task(), name="RecurringBillingTask"))
+    # Recurring billing moved to panel webhook (24h before expiry). No periodic task needed here.
 
     logging.info("Starting bot in Webhook mode with AIOHTTP server...")
     logging.info(f"Starting bot with main tasks: {[task.get_name() for task in main_tasks]}")