feat: persist settings and enrich conversation context

tests/repositories.test.ts

@@ -27,6 +27,7 @@ describe('PostsRepository', () => {
       subreddit: 'test',
       author: 'user1',
       title: 'Test Post',
+      postUrl: 'https://www.reddit.com/r/test/comments/post1/test_post/',
       imageUrl: 'http://example.com/img.jpg',
       processedAt: Date.now(),
     });
@@ -37,6 +38,7 @@ describe('PostsRepository', () => {
     expect(post!.subreddit).toBe('test');
     expect(post!.author).toBe('user1');
     expect(post!.title).toBe('Test Post');
+    expect(post!.postUrl).toBe('https://www.reddit.com/r/test/comments/post1/test_post/');
     expect(post!.imageUrl).toBe('http://example.com/img.jpg');
     expect(post!.messageSent).toBe(false);
     expect(post!.imageAnalysis).toBeNull();
@@ -203,7 +205,7 @@ describe('MessagesRepository', () => {
     expect(updated!.gotResponse).toBe(true);
   });
 
-  it('chat-originated rows appear in getRecent and contribute to stats', () => {
+  it('keeps unassociated chat history out of performance trends', () => {
     messagesRepo.insertChat({
       recipient: 'bob',
       subject: 'bob',
@@ -213,6 +215,7 @@ describe('MessagesRepository', () => {
     });
     const recent = messagesRepo.getRecent(10);
     expect(recent.some((m) => m.chatRoomId === '!r1:reddit.com')).toBe(true);
+    expect(messagesRepo.getResponseRateTrend()).toEqual([]);
   });
 
   it('inserts and retrieves a message', () => {
@@ -305,19 +308,22 @@ describe('MessagesRepository', () => {
       subreddit: 'gonewild',
       author: 'alice',
       title: 'Second post',
+      postUrl: 'https://www.reddit.com/r/gonewild/comments/post-b/second_post/',
       imageUrl: null,
       processedAt: Date.now(),
     });
 
     const base = Date.now();
     messagesRepo.insert({ postId: 'post-a', recipient: 'alice', subject: 's', message: 'm', sentAt: base });
-    messagesRepo.insert({ postId: 'post-b', recipient: 'alice', subject: 's', message: 'm', sentAt: base + 1000 });
+    messagesRepo.insert({ postId: 'post-b', recipient: 'alice', subject: 's', message: 'm', sentAt: base + 1000, chatRoomId: 'room-b' });
 
     const latest = messagesRepo.getLatestByRecipient('alice');
     expect(latest).toBeDefined();
     expect(latest!.postId).toBe('post-b');
     expect(latest!.subreddit).toBe('gonewild');
     expect(latest!.postTitle).toBe('Second post');
+    expect(latest!.postUrl).toBe('https://www.reddit.com/r/gonewild/comments/post-b/second_post/');
+    expect(messagesRepo.getByChatRoomId('room-b')).toMatchObject({ postId: 'post-b', postTitle: 'Second post' });
 
     expect(messagesRepo.getLatestByRecipient('ALICE')).toBeDefined();
     expect(messagesRepo.getLatestByRecipient('nobody')).toBeUndefined();