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.

app/tim-kiem/page.tsx

@@ -18,7 +18,6 @@ type BrowseNovel = {
   views: number
   totalChapters: number
   status: string
-  seriesId?: string | null
 }
 
 type BrowseResponse = {
@@ -34,24 +33,6 @@ type GenreItem = {
   slug: string
 }
 
-function collapseSeriesRows<T extends { id: string; seriesId?: string | null }>(rows: T[]): T[] {
-  const pickedSeries = new Set<string>()
-  const output: T[] = []
-
-  for (const row of rows) {
-    if (!row.seriesId) {
-      output.push(row)
-      continue
-    }
-
-    if (pickedSeries.has(row.seriesId)) continue
-    pickedSeries.add(row.seriesId)
-    output.push(row)
-  }
-
-  return output
-}
-
 function buildBrowsePath(params: Record<string, string>) {
   const search = new URLSearchParams(params)
   return `/api/novels/browse?${search.toString()}`
@@ -100,7 +81,6 @@ export default async function SearchPage({
         status: statusFilter === "all" ? "" : statusFilter,
         page: String(requestedPage),
         limit: String(PAGE_SIZE),
-        collapse_series: "true",
       })
     )