fix(tasks): handle next_task by resetting FSM to doing_tasks; add stop/cancel controls and stop button\n\nfix(words/import): pass user level into VocabularyService.add_word via difficulty_level; rename incorrect 'difficulty' arg to 'difficulty_level'

bot/handlers/words.py

@@ -69,7 +69,8 @@ async def cmd_words(message: Message, state: FSMContext):
         await state.update_data(
             theme=theme,
             words=words,
-            user_id=user.id
+            user_id=user.id,
+            level=user.level.name
         )
         await state.set_state(WordsStates.viewing_words)
 
@@ -155,7 +156,7 @@ async def add_single_word(callback: CallbackQuery, state: FSMContext):
             examples=[{"en": word_data.get('example', ''), "ru": ""}] if word_data.get('example') else [],
             source=WordSource.SUGGESTED,
             category=data.get('theme', 'general'),
-            difficulty=None
+            difficulty_level=data.get('level')
         )
 
     await callback.answer(f"✅ Слово '{word_data['word']}' добавлено в словарь")
@@ -193,7 +194,7 @@ async def add_all_words(callback: CallbackQuery, state: FSMContext):
                 examples=[{"en": word_data.get('example', ''), "ru": ""}] if word_data.get('example') else [],
                 source=WordSource.SUGGESTED,
                 category=theme,
-                difficulty=None
+                difficulty_level=data.get('level')
             )
             added_count += 1