Add per-user home sections & unified Audible cache

Introduce per-user configurable home page sections and a unified Audible cache/category model. Adds Prisma models (UserHomeSection, AudibleCacheCategory) and migrations to create tables and remove legacy popular/new_release flags; updates schema.prisma accordingly. Add API routes for user home sections, live Audible categories, and category-based audiobook listing, and refactor popular/new-releases/covers routes to read from AudibleCacheCategory. Frontend: new HomeSection component, HomeSectionConfigModal, useHomeSections hook, and homepage changes to render dynamic sections plus image fallback to a placeholder SVG. Also add placeholder_cover.svg and tests for home sections and the audible refresh processor.

src/app/api/audible/categories/route.ts

@@ -0,0 +1,39 @@
+/**
+ * Component: Audible Categories API Route
+ * Documentation: documentation/features/home-sections.md
+ *
+ * Live scrape of top-level Audible categories for the home section config modal.
+ */
+
+import { NextRequest, NextResponse } from 'next/server';
+import { requireAuth, AuthenticatedRequest } from '@/lib/middleware/auth';
+import { RMABLogger } from '@/lib/utils/logger';
+
+const logger = RMABLogger.create('API.Audible.Categories');
+
+/**
+ * GET /api/audible/categories
+ * Returns top-level Audible categories scraped live from audible.com/categories
+ */
+export async function GET(request: NextRequest) {
+  return requireAuth(request, async (_req: AuthenticatedRequest) => {
+    try {
+      const { getAudibleService } = await import('@/lib/integrations/audible.service');
+      const audibleService = getAudibleService();
+      const categories = await audibleService.getCategories();
+
+      return NextResponse.json({
+        success: true,
+        categories,
+      });
+    } catch (error) {
+      logger.error('Failed to fetch categories', {
+        error: error instanceof Error ? error.message : String(error),
+      });
+      return NextResponse.json(
+        { error: 'FetchError', message: 'Failed to fetch Audible categories' },
+        { status: 500 }
+      );
+    }
+  });
+}

src/app/api/audiobooks/category/[categoryId]/route.ts

@@ -0,0 +1,154 @@
+/**
+ * Component: Category Audiobooks API Route
+ * Documentation: documentation/features/home-sections.md
+ *
+ * Serves audiobooks for a specific Audible category from AudibleCacheCategory,
+ * with the same enrichment pattern as popular/new-releases routes.
+ */
+
+import { NextRequest, NextResponse } from 'next/server';
+import { prisma } from '@/lib/db';
+import { enrichAudiobooksWithMatches, getAvailableAsins } from '@/lib/utils/audiobook-matcher';
+import { getCurrentUser } from '@/lib/middleware/auth';
+import { RMABLogger } from '@/lib/utils/logger';
+
+const logger = RMABLogger.create('API.Audiobooks.Category');
+
+/**
+ * GET /api/audiobooks/category/[categoryId]?page=1&limit=20&hideAvailable=false
+ */
+export async function GET(
+  request: NextRequest,
+  { params }: { params: Promise<{ categoryId: string }> }
+) {
+  try {
+    const { categoryId } = await params;
+    const searchParams = request.nextUrl.searchParams;
+    const page = parseInt(searchParams.get('page') || '1', 10);
+    const limit = parseInt(searchParams.get('limit') || '20', 10);
+    const hideAvailable = searchParams.get('hideAvailable') === 'true';
+
+    if (page < 1 || limit < 1 || limit > 100) {
+      return NextResponse.json(
+        { error: 'ValidationError', message: 'Invalid pagination parameters.' },
+        { status: 400 }
+      );
+    }
+
+    const skip = (page - 1) * limit;
+
+    // Get excluded ASINs when hideAvailable
+    let excludedAsins: string[] = [];
+    if (hideAvailable) {
+      const availableSet = await getAvailableAsins();
+      excludedAsins = [...availableSet];
+    }
+
+    // Query AudibleCacheCategory joined with AudibleCache
+    const whereClause: any = { categoryId };
+    if (excludedAsins.length > 0) {
+      whereClause.asin = { notIn: excludedAsins };
+    }
+
+    const [categoryEntries, totalCount] = await Promise.all([
+      prisma.audibleCacheCategory.findMany({
+        where: whereClause,
+        orderBy: { rank: 'asc' },
+        skip,
+        take: limit,
+        select: { asin: true, rank: true },
+      }),
+      prisma.audibleCacheCategory.count({ where: whereClause }),
+    ]);
+
+    if (totalCount === 0) {
+      return NextResponse.json({
+        success: true,
+        audiobooks: [],
+        count: 0,
+        totalCount: 0,
+        page,
+        totalPages: 0,
+        hasMore: false,
+        message: 'No audiobooks found for this category. Data may not have been refreshed yet.',
+      });
+    }
+
+    // Fetch full metadata from AudibleCache for these ASINs
+    const asins = categoryEntries.map((e) => e.asin);
+    const cacheEntries = await prisma.audibleCache.findMany({
+      where: { asin: { in: asins } },
+      select: {
+        asin: true,
+        title: true,
+        author: true,
+        narrator: true,
+        description: true,
+        coverArtUrl: true,
+        cachedCoverPath: true,
+        durationMinutes: true,
+        releaseDate: true,
+        rating: true,
+        genres: true,
+        lastSyncedAt: true,
+      },
+    });
+
+    // Build a map for ordering by rank
+    const cacheMap = new Map(cacheEntries.map((e) => [e.asin, e]));
+
+    // Transform to matcher input format, preserving rank order
+    const audibleBooks = categoryEntries
+      .map((entry) => {
+        const book = cacheMap.get(entry.asin);
+        if (!book) return null;
+
+        let coverUrl = book.coverArtUrl || undefined;
+        if (book.cachedCoverPath) {
+          const filename = book.cachedCoverPath.split('/').pop();
+          coverUrl = `/api/cache/thumbnails/${filename}`;
+        }
+
+        return {
+          asin: book.asin,
+          title: book.title,
+          author: book.author,
+          narrator: book.narrator || undefined,
+          description: book.description || undefined,
+          coverArtUrl: coverUrl,
+          durationMinutes: book.durationMinutes || undefined,
+          releaseDate: book.releaseDate?.toISOString() || undefined,
+          rating: book.rating ? parseFloat(book.rating.toString()) : undefined,
+          genres: (book.genres as string[]) || [],
+        };
+      })
+      .filter(Boolean) as any[];
+
+    // Enrich with library matching and request status
+    const currentUser = getCurrentUser(request);
+    const userId = currentUser?.sub || undefined;
+    const enrichedAudiobooks = await enrichAudiobooksWithMatches(audibleBooks, userId);
+
+    const totalPages = Math.ceil(totalCount / limit);
+    const hasMore = page < totalPages;
+
+    return NextResponse.json({
+      success: true,
+      audiobooks: enrichedAudiobooks,
+      count: enrichedAudiobooks.length,
+      totalCount,
+      page,
+      totalPages,
+      hasMore,
+      lastSync: cacheEntries[0]?.lastSyncedAt?.toISOString() || null,
+    });
+  } catch (error) {
+    logger.error('Failed to get category audiobooks', {
+      error: error instanceof Error ? error.message : String(error),
+    });
+    return NextResponse.json(
+      { error: 'FetchError', message: 'Failed to fetch category audiobooks' },
+      { status: 500 }
+    );
+  }
+}

src/app/api/audiobooks/covers/route.ts

@@ -2,12 +2,14 @@
  * Component: Audiobook Covers API Route
  * Documentation: documentation/frontend/pages/login.md
  *
- * Serves random popular audiobook covers for login page floating animations
+ * Serves random popular audiobook covers for login page floating animations.
+ * Queries AudibleCacheCategory with '__popular__' categoryId for cover sources.
  */
 
 import { NextResponse } from 'next/server';
 import { prisma } from '@/lib/db';
 import { RMABLogger } from '@/lib/utils/logger';
+import { POPULAR_CATEGORY_ID } from '@/lib/processors/audible-refresh.processor';
 
 const logger = RMABLogger.create('API.Audiobooks.Covers');
 
@@ -20,18 +22,22 @@ const logger = RMABLogger.create('API.Audiobooks.Covers');
  */
 export async function GET() {
   try {
-    // Fetch all popular audiobooks with covers (up to 200)
+    // Get popular ASINs from category table (up to 200)
+    const categoryEntries = await prisma.audibleCacheCategory.findMany({
+      where: { categoryId: POPULAR_CATEGORY_ID },
+      orderBy: { rank: 'asc' },
+      take: 200,
+      select: { asin: true },
+    });
+
+    const asins = categoryEntries.map((e) => e.asin);
+
+    // Fetch cover data from AudibleCache for popular ASINs with cached covers
     const audiobooks = await prisma.audibleCache.findMany({
       where: {
-        isPopular: true,
-        cachedCoverPath: {
-          not: null,
-        },
+        asin: { in: asins },
+        cachedCoverPath: { not: null },
       },
-      orderBy: {
-        popularRank: 'asc',
-      },
-      take: 200,
       select: {
         asin: true,
         title: true,

src/app/api/audiobooks/new-releases/route.ts

@@ -2,7 +2,8 @@
  * Component: New Releases API Route
  * Documentation: documentation/integrations/audible.md
  *
- * Serves new release audiobooks from audible_cache with real-time Plex matching
+ * Serves new release audiobooks from AudibleCacheCategory with real-time library matching.
+ * New releases are stored with categoryId '__new_releases__' in the unified category table.
  */
 
 import { NextRequest, NextResponse } from 'next/server';
@@ -10,12 +11,13 @@ import { prisma } from '@/lib/db';
 import { enrichAudiobooksWithMatches, getAvailableAsins } from '@/lib/utils/audiobook-matcher';
 import { getCurrentUser } from '@/lib/middleware/auth';
 import { RMABLogger } from '@/lib/utils/logger';
+import { NEW_RELEASES_CATEGORY_ID } from '@/lib/processors/audible-refresh.processor';
 
 const logger = RMABLogger.create('API.Audiobooks.NewReleases');
 
 /**
  * GET /api/audiobooks/new-releases?page=1&limit=20
- * Get new release audiobooks from audible_cache with pagination
+ * Get new release audiobooks from AudibleCacheCategory with pagination
  *
  * Real-time matching against plex_library determines availability.
  */
@@ -46,39 +48,21 @@ export async function GET(request: NextRequest) {
       excludedAsins = [...availableSet];
     }
 
-    const whereClause = {
-      isNewRelease: true,
-      ...(excludedAsins.length > 0 ? { asin: { notIn: excludedAsins } } : {}),
-    };
+    const whereClause: any = { categoryId: NEW_RELEASES_CATEGORY_ID };
+    if (excludedAsins.length > 0) {
+      whereClause.asin = { notIn: excludedAsins };
+    }
 
-    // Query audible_cache for new release audiobooks
-    const [audiobooks, totalCount] = await Promise.all([
-      prisma.audibleCache.findMany({
+    // Query AudibleCacheCategory for new release audiobooks
+    const [categoryEntries, totalCount] = await Promise.all([
+      prisma.audibleCacheCategory.findMany({
         where: whereClause,
-        orderBy: {
-          newReleaseRank: 'asc',
-        },
+        orderBy: { rank: 'asc' },
         skip,
         take: limit,
-        select: {
-          id: true,
-          asin: true,
-          title: true,
-          author: true,
-          narrator: true,
-          description: true,
-          coverArtUrl: true,
-          cachedCoverPath: true,
-          durationMinutes: true,
-          releaseDate: true,
-          rating: true,
-          genres: true,
-          lastSyncedAt: true,
-        },
-      }),
-      prisma.audibleCache.count({
-        where: whereClause,
+        select: { asin: true, rank: true },
       }),
+      prisma.audibleCacheCategory.count({ where: whereClause }),
     ]);
 
     // If no data found, return helpful message
@@ -95,30 +79,56 @@ export async function GET(request: NextRequest) {
       });
     }
 
-    // Transform to matcher input format (uses ASIN as required field)
-    // Use cached cover path when available, otherwise fall back to coverArtUrl
-    const audibleBooks = audiobooks.map((book) => {
-      // Convert cached path to API URL if it exists
-      let coverUrl = book.coverArtUrl || undefined;
-      if (book.cachedCoverPath) {
-        const filename = book.cachedCoverPath.split('/').pop();
-        coverUrl = `/api/cache/thumbnails/${filename}`;
-      }
-
-      return {
-        asin: book.asin,
-        title: book.title,
-        author: book.author,
-        narrator: book.narrator || undefined,
-        description: book.description || undefined,
-        coverArtUrl: coverUrl,
-        durationMinutes: book.durationMinutes || undefined,
-        releaseDate: book.releaseDate?.toISOString() || undefined,
-        rating: book.rating ? parseFloat(book.rating.toString()) : undefined,
-        genres: (book.genres as string[]) || [],
-      };
+    // Fetch full metadata from AudibleCache for these ASINs
+    const asins = categoryEntries.map((e) => e.asin);
+    const cacheEntries = await prisma.audibleCache.findMany({
+      where: { asin: { in: asins } },
+      select: {
+        asin: true,
+        title: true,
+        author: true,
+        narrator: true,
+        description: true,
+        coverArtUrl: true,
+        cachedCoverPath: true,
+        durationMinutes: true,
+        releaseDate: true,
+        rating: true,
+        genres: true,
+        lastSyncedAt: true,
+      },
     });
 
+    // Build a map for ordering by rank
+    const cacheMap = new Map(cacheEntries.map((e) => [e.asin, e]));
+
+    // Transform to matcher input format, preserving rank order
+    const audibleBooks = categoryEntries
+      .map((entry) => {
+        const book = cacheMap.get(entry.asin);
+        if (!book) return null;
+
+        let coverUrl = book.coverArtUrl || undefined;
+        if (book.cachedCoverPath) {
+          const filename = book.cachedCoverPath.split('/').pop();
+          coverUrl = `/api/cache/thumbnails/${filename}`;
+        }
+
+        return {
+          asin: book.asin,
+          title: book.title,
+          author: book.author,
+          narrator: book.narrator || undefined,
+          description: book.description || undefined,
+          coverArtUrl: coverUrl,
+          durationMinutes: book.durationMinutes || undefined,
+          releaseDate: book.releaseDate?.toISOString() || undefined,
+          rating: book.rating ? parseFloat(book.rating.toString()) : undefined,
+          genres: (book.genres as string[]) || [],
+        };
+      })
+      .filter(Boolean) as any[];
+
     // Get current user (optional - for request status enrichment)
     const currentUser = getCurrentUser(request);
     const userId = currentUser?.sub || undefined;
@@ -137,7 +147,7 @@ export async function GET(request: NextRequest) {
       page,
       totalPages,
       hasMore,
-      lastSync: audiobooks[0]?.lastSyncedAt?.toISOString() || null,
+      lastSync: cacheEntries[0]?.lastSyncedAt?.toISOString() || null,
     });
   } catch (error) {
     logger.error('Failed to get new releases', { error: error instanceof Error ? error.message : String(error) });

src/app/api/audiobooks/popular/route.ts

@@ -2,7 +2,8 @@
  * Component: Popular Audiobooks API Route
  * Documentation: documentation/integrations/audible.md
  *
- * Serves popular audiobooks from audible_cache with real-time Plex matching
+ * Serves popular audiobooks from AudibleCacheCategory with real-time library matching.
+ * Popular books are stored with categoryId '__popular__' in the unified category table.
  */
 
 import { NextRequest, NextResponse } from 'next/server';
@@ -10,12 +11,13 @@ import { prisma } from '@/lib/db';
 import { enrichAudiobooksWithMatches, getAvailableAsins } from '@/lib/utils/audiobook-matcher';
 import { getCurrentUser } from '@/lib/middleware/auth';
 import { RMABLogger } from '@/lib/utils/logger';
+import { POPULAR_CATEGORY_ID } from '@/lib/processors/audible-refresh.processor';
 
 const logger = RMABLogger.create('API.Audiobooks.Popular');
 
 /**
  * GET /api/audiobooks/popular?page=1&limit=20
- * Get popular audiobooks from audible_cache with pagination
+ * Get popular audiobooks from AudibleCacheCategory with pagination
  *
  * Real-time matching against plex_library determines availability.
  */
@@ -46,39 +48,21 @@ export async function GET(request: NextRequest) {
       excludedAsins = [...availableSet];
     }
 
-    const whereClause = {
-      isPopular: true,
-      ...(excludedAsins.length > 0 ? { asin: { notIn: excludedAsins } } : {}),
-    };
+    const whereClause: any = { categoryId: POPULAR_CATEGORY_ID };
+    if (excludedAsins.length > 0) {
+      whereClause.asin = { notIn: excludedAsins };
+    }
 
-    // Query audible_cache for popular audiobooks
-    const [audiobooks, totalCount] = await Promise.all([
-      prisma.audibleCache.findMany({
+    // Query AudibleCacheCategory for popular audiobooks
+    const [categoryEntries, totalCount] = await Promise.all([
+      prisma.audibleCacheCategory.findMany({
         where: whereClause,
-        orderBy: {
-          popularRank: 'asc',
-        },
+        orderBy: { rank: 'asc' },
         skip,
         take: limit,
-        select: {
-          id: true,
-          asin: true,
-          title: true,
-          author: true,
-          narrator: true,
-          description: true,
-          coverArtUrl: true,
-          cachedCoverPath: true,
-          durationMinutes: true,
-          releaseDate: true,
-          rating: true,
-          genres: true,
-          lastSyncedAt: true,
-        },
-      }),
-      prisma.audibleCache.count({
-        where: whereClause,
+        select: { asin: true, rank: true },
       }),
+      prisma.audibleCacheCategory.count({ where: whereClause }),
     ]);
 
     // If no data found, return helpful message
@@ -95,30 +79,56 @@ export async function GET(request: NextRequest) {
       });
     }
 
-    // Transform to matcher input format (uses ASIN as required field)
-    // Use cached cover path when available, otherwise fall back to coverArtUrl
-    const audibleBooks = audiobooks.map((book) => {
-      // Convert cached path to API URL if it exists
-      let coverUrl = book.coverArtUrl || undefined;
-      if (book.cachedCoverPath) {
-        const filename = book.cachedCoverPath.split('/').pop();
-        coverUrl = `/api/cache/thumbnails/${filename}`;
-      }
-
-      return {
-        asin: book.asin,
-        title: book.title,
-        author: book.author,
-        narrator: book.narrator || undefined,
-        description: book.description || undefined,
-        coverArtUrl: coverUrl,
-        durationMinutes: book.durationMinutes || undefined,
-        releaseDate: book.releaseDate?.toISOString() || undefined,
-        rating: book.rating ? parseFloat(book.rating.toString()) : undefined,
-        genres: (book.genres as string[]) || [],
-      };
+    // Fetch full metadata from AudibleCache for these ASINs
+    const asins = categoryEntries.map((e) => e.asin);
+    const cacheEntries = await prisma.audibleCache.findMany({
+      where: { asin: { in: asins } },
+      select: {
+        asin: true,
+        title: true,
+        author: true,
+        narrator: true,
+        description: true,
+        coverArtUrl: true,
+        cachedCoverPath: true,
+        durationMinutes: true,
+        releaseDate: true,
+        rating: true,
+        genres: true,
+        lastSyncedAt: true,
+      },
     });
 
+    // Build a map for ordering by rank
+    const cacheMap = new Map(cacheEntries.map((e) => [e.asin, e]));
+
+    // Transform to matcher input format, preserving rank order
+    const audibleBooks = categoryEntries
+      .map((entry) => {
+        const book = cacheMap.get(entry.asin);
+        if (!book) return null;
+
+        let coverUrl = book.coverArtUrl || undefined;
+        if (book.cachedCoverPath) {
+          const filename = book.cachedCoverPath.split('/').pop();
+          coverUrl = `/api/cache/thumbnails/${filename}`;
+        }
+
+        return {
+          asin: book.asin,
+          title: book.title,
+          author: book.author,
+          narrator: book.narrator || undefined,
+          description: book.description || undefined,
+          coverArtUrl: coverUrl,
+          durationMinutes: book.durationMinutes || undefined,
+          releaseDate: book.releaseDate?.toISOString() || undefined,
+          rating: book.rating ? parseFloat(book.rating.toString()) : undefined,
+          genres: (book.genres as string[]) || [],
+        };
+      })
+      .filter(Boolean) as any[];
+
     // Get current user (optional - for request status enrichment)
     const currentUser = getCurrentUser(request);
     const userId = currentUser?.sub || undefined;
@@ -137,7 +147,7 @@ export async function GET(request: NextRequest) {
       page,
       totalPages,
       hasMore,
-      lastSync: audiobooks[0]?.lastSyncedAt?.toISOString() || null,
+      lastSync: cacheEntries[0]?.lastSyncedAt?.toISOString() || null,
     });
   } catch (error) {
     logger.error('Failed to get popular audiobooks', { error: error instanceof Error ? error.message : String(error) });

src/app/api/user/home-sections/route.ts

@@ -0,0 +1,202 @@
+/**
+ * Component: User Home Sections API Route
+ * Documentation: documentation/features/home-sections.md
+ *
+ * Per-user configurable home page sections.
+ * GET returns sections + next refresh time.
+ * PUT saves full section config (delete-and-recreate in transaction).
+ */
+
+import { NextRequest, NextResponse } from 'next/server';
+import { requireAuth, AuthenticatedRequest } from '@/lib/middleware/auth';
+import { prisma } from '@/lib/db';
+import { z } from 'zod';
+import { RMABLogger } from '@/lib/utils/logger';
+
+const logger = RMABLogger.create('API.User.HomeSections');
+
+const MAX_SECTIONS = 10;
+
+const VALID_SECTION_TYPES = ['popular', 'new_releases', 'category'] as const;
+
+const SectionSchema = z.object({
+  sectionType: z.enum(VALID_SECTION_TYPES),
+  categoryId: z.string().optional().nullable(),
+  categoryName: z.string().optional().nullable(),
+  sortOrder: z.number().int().min(0),
+});
+
+const PutBodySchema = z.object({
+  sections: z.array(SectionSchema).max(MAX_SECTIONS),
+});
+
+/**
+ * Create default home sections for a new user (Popular + New Releases).
+ */
+async function ensureDefaultSections(userId: string) {
+  const existing = await prisma.userHomeSection.findMany({
+    where: { userId },
+    select: { id: true },
+    take: 1,
+  });
+
+  if (existing.length > 0) return;
+
+  await prisma.userHomeSection.createMany({
+    data: [
+      { userId, sectionType: 'popular', sortOrder: 0 },
+      { userId, sectionType: 'new_releases', sortOrder: 1 },
+    ],
+  });
+}
+
+/**
+ * GET /api/user/home-sections
+ * Returns the user's configured home sections + next scheduled refresh time.
+ */
+export async function GET(request: NextRequest) {
+  return requireAuth(request, async (req: AuthenticatedRequest) => {
+    try {
+      if (!req.user) {
+        return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
+      }
+
+      await ensureDefaultSections(req.user.id);
+
+      const sections = await prisma.userHomeSection.findMany({
+        where: { userId: req.user.id },
+        orderBy: { sortOrder: 'asc' },
+      });
+
+      // Get next refresh time from scheduled jobs
+      let nextRefresh: string | null = null;
+      try {
+        const scheduledJob = await prisma.scheduledJob.findFirst({
+          where: { type: 'audible_refresh', enabled: true },
+          select: { nextRun: true },
+        });
+        nextRefresh = scheduledJob?.nextRun?.toISOString() || null;
+      } catch {
+        // Non-critical — just omit nextRefresh
+      }
+
+      return NextResponse.json({
+        success: true,
+        sections: sections.map((s) => ({
+          id: s.id,
+          sectionType: s.sectionType,
+          categoryId: s.categoryId,
+          categoryName: s.categoryName,
+          sortOrder: s.sortOrder,
+        })),
+        nextRefresh,
+      });
+    } catch (error) {
+      logger.error('Failed to get home sections', {
+        error: error instanceof Error ? error.message : String(error),
+      });
+      return NextResponse.json(
+        { error: 'FetchError', message: 'Failed to fetch home sections' },
+        { status: 500 }
+      );
+    }
+  });
+}
+
+/**
+ * PUT /api/user/home-sections
+ * Replaces all home sections for the user (delete-and-recreate in transaction).
+ * Validates: max 10 sections, no duplicate sections, category sections need categoryId.
+ */
+export async function PUT(request: NextRequest) {
+  return requireAuth(request, async (req: AuthenticatedRequest) => {
+    try {
+      if (!req.user) {
+        return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
+      }
+
+      const body = await req.json();
+      const { sections } = PutBodySchema.parse(body);
+
+      // Validate category sections have categoryId
+      for (const section of sections) {
+        if (section.sectionType === 'category' && !section.categoryId) {
+          return NextResponse.json(
+            { error: 'ValidationError', message: 'Category sections require a categoryId' },
+            { status: 400 }
+          );
+        }
+      }
+
+      // Check for duplicate section types (only one popular, one new_releases, unique categories)
+      const seen = new Set<string>();
+      for (const section of sections) {
+        const key =
+          section.sectionType === 'category'
+            ? `category:${section.categoryId}`
+            : section.sectionType;
+        if (seen.has(key)) {
+          return NextResponse.json(
+            { error: 'ValidationError', message: `Duplicate section: ${key}` },
+            { status: 400 }
+          );
+        }
+        seen.add(key);
+      }
+
+      const userId = req.user.id;
+
+      // Delete-and-recreate in a transaction
+      await prisma.$transaction(async (tx) => {
+        await tx.userHomeSection.deleteMany({ where: { userId } });
+
+        if (sections.length > 0) {
+          await tx.userHomeSection.createMany({
+            data: sections.map((s, idx) => ({
+              userId,
+              sectionType: s.sectionType,
+              categoryId: s.sectionType === 'category' ? s.categoryId : null,
+              categoryName: s.sectionType === 'category' ? s.categoryName : null,
+              sortOrder: idx,
+            })),
+          });
+        }
+      });
+
+      // Return the saved sections
+      const saved = await prisma.userHomeSection.findMany({
+        where: { userId },
+        orderBy: { sortOrder: 'asc' },
+      });
+
+      logger.info(`User ${userId} updated home sections (${saved.length} sections)`);
+
+      return NextResponse.json({
+        success: true,
+        sections: saved.map((s) => ({
+          id: s.id,
+          sectionType: s.sectionType,
+          categoryId: s.categoryId,
+          categoryName: s.categoryName,
+          sortOrder: s.sortOrder,
+        })),
+      });
+    } catch (error) {
+      logger.error('Failed to save home sections', {
+        error: error instanceof Error ? error.message : String(error),
+      });
+
+      if (error instanceof z.ZodError) {
+        return NextResponse.json(
+          { error: 'ValidationError', details: error.errors },
+          { status: 400 }
+        );
+      }
+
+      return NextResponse.json(
+        { error: 'SaveError', message: 'Failed to save home sections' },
+        { status: 500 }
+      );
+    }
+  });
+}