Show Reddit post age in conversations

packages/api-contracts/src/chats.ts

@@ -68,6 +68,7 @@ export const ConversationDetailResponseSchema = ActiveChatSchema.extend({
     title: z.string().optional(),
     url: z.string(),
     imageUrl: z.string().nullable().optional(),
+    postedAt: z.number().optional(),
     sentAt: z.number(),
   }).nullable(),
   automation: z.strictObject({

packages/api-contracts/tests/contracts.test.ts

@@ -172,7 +172,8 @@ describe('dashboard endpoint contracts', () => {
       ...chat,
       triggeringPost: {
         id: 'post-1', subreddit: 'example', title: 'Example',
-        url: 'https://www.reddit.com/r/example/comments/post-1/', imageUrl: 'https://i.redd.it/example.jpg', sentAt: 1_700_000_000_000,
+        url: 'https://www.reddit.com/r/example/comments/post-1/', imageUrl: 'https://i.redd.it/example.jpg',
+        postedAt: 1_699_999_000_000, sentAt: 1_700_000_000_000,
       },
       automation: { turnsUsed: 1, remainingTurns: 2, status: 'active', handoffReason: null },
       syncInProgress: null,