feat: version 0.9.30 - cache invalidation fixes

🔧 Fixed cache invalidation for featured materials:
- Enhanced invalidate_shout_related_cache with featured keys
- Fixed set_featured/set_unfeatured functions with async cache invalidation
- Materials now correctly appear/disappear from main page on feature/unfeature

✅ Code Quality: Python Standards Compliance
- Ruff linting & formatting checks passed
- MyPy type checking passed
- All functions have proper type hints and docstrings
- Tests passing successfully

Version bump: 0.9.30

cache/cache.py

@@ -513,6 +513,10 @@ async def invalidate_shout_related_cache(shout: Shout, author_id: int) -> None:
         "unrated",  # неоцененные
         "recent",  # последние
         "coauthored",  # совместные
+        # 🔧 Добавляем ключи с featured материалами
+        "featured",  # featured публикации
+        "featured:recent",  # недавние featured
+        "featured:top",  # топ featured
     }
 
     # Добавляем ключи авторов
@@ -523,6 +527,12 @@ async def invalidate_shout_related_cache(shout: Shout, author_id: int) -> None:
     cache_keys.update(f"topic_{t.id}" for t in shout.topics)
     cache_keys.update(f"topic_shouts_{t.id}" for t in shout.topics)
 
+    # 🔧 Добавляем ключи featured материалов для каждой темы
+    for topic in shout.topics:
+        cache_keys.update(
+            [f"topic_{topic.id}:featured", f"topic_{topic.id}:featured:recent", f"topic_{topic.id}:featured:top"]
+        )
+
     await invalidate_shouts_cache(list(cache_keys))