Fiks: warmup brukte feil kolonnenavn (created_at → edited_at) for revisjoner

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

worker/src/warmup.rs

@@ -172,10 +172,10 @@ pub async fn run(
                 SELECT
                     mr.message_id::text,
                     mr.body,
-                    mr.created_at::text
+                    mr.edited_at::text
                 FROM message_revisions mr
                 WHERE mr.message_id = ANY($1::uuid[])
-                ORDER BY mr.created_at DESC
+                ORDER BY mr.edited_at DESC
                 "#
             )
             .bind(&msg_ids)