refactor: Remove series-related fields and components to streamline novel management

- Eliminated seriesId and related fields from various models and components to simplify the data structure.
- Updated UI components to reflect the removal of series dependencies, enhancing clarity and maintainability.
- Adjusted API calls and data handling to ensure compatibility with the new structure.

lib/types.ts

@@ -11,11 +11,6 @@ export interface Novel {
   title: string
   slug: string
   authorName: string
-  series?: {
-    id: string
-    name: string
-    slug: string
-  } | null
   coverColor: string
   description: string
   genres: string[]