Improve seller account filtering

tests/monitor.test.ts

@@ -105,6 +105,31 @@ describe('MonitorService', () => {
     expect(messagesRepo.hasSentTo).toHaveBeenCalledWith('already_msgd');
   });
 
+  it('records seller posts as processed and continues to a clean candidate', async () => {
+    const sellerPost: RedditPost = {
+      id: 't3_seller', subreddit: 'sub1', author: 'seller', title: 'My page',
+      selftext: 'OnlyFans in bio', url: 'http://example.com/1.jpg', permalink: '/r/sub1/1', thumbnail: '',
+      is_self: false, created_utc: 2, over_18: true, spoiler: false,
+    };
+    const cleanPost: RedditPost = {
+      id: 't3_clean', subreddit: 'sub1', author: 'clean', title: 'Hello',
+      url: 'http://example.com/2.jpg', permalink: '/r/sub1/2', thumbnail: '',
+      is_self: false, created_utc: 1, over_18: true, spoiler: false,
+    };
+    const redditApi = createMockRedditApi([sellerPost, cleanPost]);
+    vi.mocked(redditApi.isSellerProfile).mockImplementation(async (username) => username === 'seller');
+    const postsRepo = createMockPostsRepo();
+    const config = getTestConfig({ reddit: { subreddits: [{ name: 'sub1', type: 'image' }] } });
+    monitor = new MonitorService(redditApi, postsRepo, createMockMessagesRepo(), config, logger, 0);
+
+    await expect(monitor.getUnprocessedPosts()).resolves.toEqual([cleanPost]);
+    expect(redditApi.isSellerProfile).toHaveBeenCalledWith(
+      'seller', config.reddit.sellerKeywords, config.reddit.sellerDomains, sellerPost,
+    );
+    expect(postsRepo.insert).toHaveBeenCalledWith(expect.objectContaining({ id: 't3_seller' }));
+    expect(postsRepo.setError).toHaveBeenCalledWith('t3_seller', 'Seller signals detected');
+  });
+
   it('returns newest post when multiple valid posts exist', async () => {
     const post1: RedditPost = {
       id: 't3_1', subreddit: 'sub1', author: 'user1', title: 'Older',