feat(web): sort accounts by created_at ascending (earliest first)

Earlier accounts were ordered by label, so the list reshuffled every
time an account was renamed. Switch to created_at ASC + id ASC as a
deterministic tiebreaker. Earliest-added accounts now stay on top
where the operator added them.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/web/src/lib/queries.ts

@@ -63,9 +63,12 @@ export async function listAccounts(operatorId: string) {
   // exposes Pair / Re-pair / Delete actions accordingly. Hiding rows
   // by status produced phantom "I created an account but it's gone"
   // bug reports.
+  // Earliest-added on top, newest at the bottom. Stable across renames
+  // (a label edit shouldn't reorder the list and confuse muscle memory)
+  // and matches how other admin tools order accounts that grow over time.
   return db.query.whatsappAccounts.findMany({
     where: (a, { eq }) => eq(a.operatorId, operatorId),
-    orderBy: (a, { asc }) => [asc(a.label)],
+    orderBy: (a, { asc }) => [asc(a.createdAt), asc(a.id)],
   });
 }