fix: defer expiry reminders for trial and bonus subscriptions

Trial and registration/referral-bonus subscriptions usually last only a
few days, so the multi-day ending-soon reminders fired almost the moment
they were granted and needlessly alarmed newcomers.

Track this with a new subscription flag (suppress_early_expiry_notifications,
migration 0035): trial activation, referral welcome bonus and inviter bonus
grants set it, while a real paid purchase clears it on upsert. While set, the
notification worker skips the day-before stages but still sends the
hours-before reminder and the expiry/after-expiry notices, so users are
warned shortly before access ends. Once they pay for a full subscription the
complete reminder spectrum resumes.

backend/bot/services/referral_service.py

@@ -197,6 +197,9 @@ class ReferralService:
                                     "status_from_panel": "ACTIVE_BONUS",
                                     "traffic_limit_bytes": self.settings.user_traffic_limit_bytes,
                                     "auto_renew_enabled": False,
+                                    # Short bonus grant: warn only hours before it
+                                    # ends, not days ahead. A real payment clears this.
+                                    "suppress_early_expiry_notifications": True,
                                 }
                                 try:
                                     await subscription_dal.deactivate_other_active_subscriptions(

backend/bot/services/subscription_notification_worker.py

@@ -153,6 +153,15 @@ class SubscriptionNotificationWorker:
                     hours_before=hours_before,
                 )
 
+            # Trial and registration/referral-bonus subscriptions last only a
+            # few days, so a multi-day "ending soon" reminder would fire almost
+            # the moment they are granted and needlessly alarm newcomers. Skip
+            # the day-before stages for them — they still get the hours-before
+            # reminder above and the expiry/after-expiry notices below. Paying
+            # for a real subscription clears the flag and restores all stages.
+            if bool(getattr(sub, "suppress_early_expiry_notifications", False)):
+                return None
+
             days_before_limit = max(
                 0,
                 int(getattr(self.settings, "SUBSCRIPTION_NOTIFY_DAYS_BEFORE", 0) or 0),

backend/bot/services/subscription_service_impl/lifecycle.py

@@ -641,6 +641,9 @@ class SubscriptionLifecycleMixin:
             "traffic_limit_bytes": traffic_limit_bytes,
             "provider": provider,
             "skip_notifications": False,
+            # A real payment restores the full reminder spectrum, clearing any
+            # trial/bonus suppression carried over on this panel subscription.
+            "suppress_early_expiry_notifications": False,
             "auto_renew_enabled": auto_renew_should_enable,
             "tariff_key": tariff.key if tariff else None,
             "tier_baseline_bytes": tier_baseline_bytes,
@@ -776,6 +779,9 @@ class SubscriptionLifecycleMixin:
                 "status_from_panel": "ACTIVE_BONUS",
                 "traffic_limit_bytes": traffic_limit,
                 "auto_renew_enabled": False,
+                # Registration/referral bonus grants are short-lived, like a
+                # trial: only warn a few hours before they end, not days ahead.
+                "suppress_early_expiry_notifications": True,
             }
             await subscription_dal.deactivate_other_active_subscriptions(
                 session, panel_uuid, panel_sub_uuid

backend/bot/services/subscription_service_impl/trial.py

@@ -63,6 +63,8 @@ class TrialSubscriptionMixin:
             "traffic_limit_bytes": self.settings.trial_traffic_limit_bytes,
             "auto_renew_enabled": False,
             "provider": "trial",
+            # Short trial: only warn a few hours before it ends, not days ahead.
+            "suppress_early_expiry_notifications": True,
         }
         try:
             await subscription_dal.upsert_subscription(session, trial_sub_data)