feat: add agent API and operational analytics

tests/response-checker.test.ts

@@ -194,7 +194,7 @@ describe('ResponseCheckerService', () => {
       expect(successfulMessagesRepo.insert).not.toHaveBeenCalled();
     });
 
-    it('stores successful messages for learning', async () => {
+    it('does not treat a single inbox reply as an engaged learning example', async () => {
       const post: ProcessedPostRecord = {
         id: 'post1',
         subreddit: 'gonewild',
@@ -245,13 +245,8 @@ describe('ResponseCheckerService', () => {
       });
 
       await checker.checkForResponses();
-      expect(successfulMessagesRepo.insert).toHaveBeenCalled();
-
-      const insertCall = vi.mocked(successfulMessagesRepo.insert).mock.calls[0][0];
-      expect(insertCall.originalMessage).toBe('Hey gorgeous!');
-      expect(insertCall.imageAnalysis).toBe('Beautiful woman');
-      expect(insertCall.postTitle).toBe('My selfie');
-      expect(insertCall.subreddit).toBe('gonewild');
+      expect(messagesRepo.markGotResponse).toHaveBeenCalledWith(1);
+      expect(successfulMessagesRepo.insert).not.toHaveBeenCalled();
     });
 
     it('does not turn a declined reply into a learning example', async () => {