chore(security): replace silent exception swallowing across handlers

bot/handlers/user/subscription/payments_stars.py

@@ -28,15 +28,15 @@ async def pay_stars_callback_handler(
     if not i18n or not callback.message:
         try:
             await callback.answer(get_text("error_occurred_try_again"), show_alert=True)
-        except Exception:
-            pass
+        except Exception as exc:
+            logging.debug("Suppressed exception in bot/handlers/user/subscription/payments_stars.py: %s", exc)
         return
 
     if not settings.STARS_ENABLED:
         try:
             await callback.answer(get_text("payment_service_unavailable_alert"), show_alert=True)
-        except Exception:
-            pass
+        except Exception as exc:
+            logging.debug("Suppressed exception in bot/handlers/user/subscription/payments_stars.py: %s", exc)
         return
 
     try:
@@ -48,8 +48,8 @@ async def pay_stars_callback_handler(
     except (ValueError, IndexError):
         try:
             await callback.answer(get_text("error_try_again"), show_alert=True)
-        except Exception:
-            pass
+        except Exception as exc:
+            logging.debug("Suppressed exception in bot/handlers/user/subscription/payments_stars.py: %s", exc)
         return
 
     user_id = callback.from_user.id
@@ -89,23 +89,23 @@ async def pay_stars_callback_handler(
             logging.warning(f"Stars payment: failed to show invoice info message ({e_edit})")
         try:
             await callback.answer()
-        except Exception:
-            pass
+        except Exception as exc:
+            logging.debug("Suppressed exception in bot/handlers/user/subscription/payments_stars.py: %s", exc)
         return
 
     try:
         await callback.answer(get_text("error_payment_gateway"), show_alert=True)
-    except Exception:
-        pass
+    except Exception as exc:
+        logging.debug("Suppressed exception in bot/handlers/user/subscription/payments_stars.py: %s", exc)
 
 
 @router.pre_checkout_query()
 async def handle_pre_checkout_query(query: types.PreCheckoutQuery):
     try:
         await query.answer(ok=True)
-    except Exception:
+    except Exception as exc:
         # Nothing else to do here; Telegram will show an error if not answered
-        pass
+        logging.debug("Failed to answer pre_checkout_query in payments_stars: %s", exc)
 
 
 @router.message(F.successful_payment)