Fix media file storage path and permissions

- Fix MEDIA_ROOT path to match Docker volume mount (/app/myproject/media)
- Update docker-compose.yml volume mounts to match MEDIA_ROOT
- Add setup_directories() function in entrypoint.sh to create media directories with proper permissions
- Add logging to TenantAwareFileSystemStorage for debugging
- Fix is_returned flag logic improvements (from previous work)

myproject/products/utils/storage.py

@@ -128,10 +128,16 @@ class TenantAwareFileSystemStorage(FileSystemStorage):
         # Добавляем tenant_id в путь для сохранения на диск
         tenant_aware_name = self._get_tenant_path(name)
 
-        logger.debug(f"[Storage] _save: {name} → {tenant_aware_name} (DB will store: {name})")
+        logger.info(f"[Storage] _save: {name} → {tenant_aware_name} (DB will store: {name})")
 
-        # Сохраняем файл на диск с tenant_id, но возвращаем исходный путь для БД
-        super()._save(tenant_aware_name, content)
+        try:
+            # Сохраняем файл на диск с tenant_id, но возвращаем исходный путь для БД
+            # Django FileSystemStorage автоматически создаст директории если их нет
+            saved_path = super()._save(tenant_aware_name, content)
+            logger.info(f"[Storage] File saved successfully: {saved_path}")
+        except Exception as e:
+            logger.error(f"[Storage] Error saving file {tenant_aware_name}: {str(e)}", exc_info=True)
+            raise
 
         # Возвращаем путь БЕЗ tenant_id для сохранения в БД
         # Это позволяет:
@@ -181,6 +187,7 @@ class TenantAwareFileSystemStorage(FileSystemStorage):
         """
         # Получаем tenant_id
         tenant_id = self._get_tenant_id()
+        logger.info(f"[Storage] exists called: name={name}, tenant_id={tenant_id}, schema={connection.schema_name}")
 
         # Если путь уже содержит tenants/, не добавляем еще раз
         if name.startswith("tenants/"):
@@ -191,11 +198,15 @@ class TenantAwareFileSystemStorage(FileSystemStorage):
                     f"Current tenant: {tenant_id}, file: {name}"
                 )
                 return False
-            return super().exists(name)
+            result = super().exists(name)
+            logger.info(f"[Storage] exists (with tenant): {name} → {result}")
+            return result
 
         # Иначе добавляем tenant_id
         tenant_aware_name = self._get_tenant_path(name)
-        return super().exists(tenant_aware_name)
+        result = super().exists(tenant_aware_name)
+        logger.info(f"[Storage] exists: {name} → {tenant_aware_name} → {result}")
+        return result
 
     def url(self, name):
         """