feat: add agent API and operational analytics

tests/monitor.test.ts

@@ -17,6 +17,7 @@ function createMockRedditApi(posts: RedditPost[] = []): RedditApiClient {
 function createMockPostsRepo(processedIds: Set<string> = new Set()): PostsRepository {
   return {
     isProcessed: vi.fn((id: string) => processedIds.has(id)),
+    isProcessedAnywhere: vi.fn((id: string) => processedIds.has(id)),
     insert: vi.fn(),
     updateAnalysis: vi.fn(),
     markMessageSent: vi.fn(),
@@ -86,6 +87,23 @@ describe('MonitorService', () => {
     expect(result.length).toBe(0);
   });
 
+  it('uses shared post history so another account cannot rediscover a post', async () => {
+    const post: RedditPost = {
+      id: 't3_shared', subreddit: 'sub1', author: 'user1', title: 'Post',
+      url: 'http://example.com/1.jpg', permalink: '/r/sub1/1', thumbnail: '',
+      is_self: false, created_utc: Date.now() / 1000, over_18: false, spoiler: false,
+    };
+    const redditApi = createMockRedditApi([post]);
+    const postsRepo = createMockPostsRepo();
+    vi.mocked(postsRepo.isProcessed).mockReturnValue(false);
+    vi.mocked(postsRepo.isProcessedAnywhere).mockReturnValue(true);
+    const config = getTestConfig({ reddit: { subreddits: [{ name: 'sub1', type: 'image' }] } });
+    monitor = new MonitorService(redditApi, postsRepo, createMockMessagesRepo(), config, logger, 0);
+
+    await expect(monitor.getUnprocessedPosts()).resolves.toEqual([]);
+    expect(postsRepo.isProcessedAnywhere).toHaveBeenCalledWith(post.id);
+  });
+
   it('skips posts from users already messaged', async () => {
     const post1: RedditPost = {
       id: 't3_1', subreddit: 'sub1', author: 'already_msgd', title: 'Post 1',
@@ -370,7 +388,7 @@ describe('MonitorService', () => {
     // (We can't directly test the shuffle, but we can verify it doesn't crash)
   });
 
-  it('limits results to 10 per author via postsRepo', async () => {
+  it('checks shared processed-post history before considering a candidate', async () => {
     const post: RedditPost = {
       id: 't3_1', subreddit: 'sub1', author: 'user1', title: 'Post',
       url: 'http://example.com/1.jpg', permalink: '/r/sub1/1', thumbnail: '',
@@ -385,8 +403,7 @@ describe('MonitorService', () => {
     monitor = new MonitorService(redditApi, postsRepo, messagesRepo, config, logger, 0);
     await monitor.getUnprocessedPosts();
 
-    // Verify isProcessed was called
-    expect(postsRepo.isProcessed).toHaveBeenCalledWith('t3_1');
+    expect(postsRepo.isProcessedAnywhere).toHaveBeenCalledWith('t3_1');
   });
 
   describe('image/chat interleaving', () => {