chore(security): replace silent exception swallowing across handlers

bot/handlers/admin/ads.py

@@ -46,8 +46,8 @@ async def show_ads_menu(callback: types.CallbackQuery, settings: Settings, i18n_
     await callback.message.edit_text(text, reply_markup=reply_markup)
     try:
         await callback.answer()
-    except Exception:
-        pass
+    except Exception as exc:
+        logging.debug("Suppressed exception in bot/handlers/admin/ads.py: %s", exc)
 
 
 @router.callback_query(F.data.startswith("admin_ads:page:"))
@@ -262,8 +262,8 @@ async def ads_create_start(callback: types.CallbackQuery, state: FSMContext, set
     await callback.message.edit_text(_("admin_ads_create_source_prompt"))
     try:
         await callback.answer()
-    except Exception:
-        pass
+    except Exception as exc:
+        logging.debug("Suppressed exception in bot/handlers/admin/ads.py: %s", exc)
 
 
 @router.message(

bot/handlers/admin/broadcast.py

@@ -171,8 +171,8 @@ async def change_broadcast_target_handler(
                 current_lang, i18n, target=new_target
             ),
         )
-    except Exception:
-        pass
+    except Exception as exc:
+        logging.debug("Suppressed exception in bot/handlers/admin/broadcast.py: %s", exc)
     await callback.answer()
 
 

bot/handlers/admin/promo/bulk.py

@@ -1,5 +1,5 @@
 import logging
-import random
+import secrets
 import string
 import csv
 import io
@@ -56,7 +56,7 @@ async def create_bulk_promo_prompt_handler(callback: types.CallbackQuery,
 def generate_unique_promo_code(length: int = 8) -> str:
     """Generate a unique random promo code"""
     characters = string.ascii_uppercase + string.digits
-    return ''.join(random.choice(characters) for _ in range(length))
+    return ''.join(secrets.choice(characters) for _ in range(length))
 
 
 # Step 1: Process quantity