Show Reddit post age in conversations

src/services/monitor.ts

@@ -274,6 +274,7 @@ export class MonitorService {
       title: post.title,
       postUrl: this.redditApi.getPostUrl(post),
       imageUrl: subredditType === 'image' ? this.redditApi.getImageUrl(post) : null,
+      postCreatedAt: post.created_utc * 1000,
       processedAt: Date.now(),
     });
     this.postsRepo.setError(post.id, reason);

src/services/reddit-account-runtime-builder.ts

@@ -288,7 +288,8 @@ class AccountRuntimeLoop {
       const imageUrl = isChat ? null : redditApi.getImageUrl(post);
       postsRepo.insert({
         id: post.id, subreddit: post.subreddit, author: post.author, title: post.title,
-        postUrl: redditApi.getPostUrl(post), imageUrl, processedAt: Date.now(),
+        postUrl: redditApi.getPostUrl(post), imageUrl,
+        postCreatedAt: post.created_utc * 1000, processedAt: Date.now(),
       });
       // Seller screening is performed once by the shared MonitorService before
       // assignment. Do not repeat its profile request for every recipient.