fix

apps/status/src/data.ts

@@ -131,6 +131,8 @@ export async function loadMonitors(pageId: string, window: Window): Promise<Moni
   // silently broken), aggregate directly from pings. Bounded by the window so
   // it stays cheap. Once the rollup catches up this branch never fires.
   if (rollupRows.length === 0) {
+    // Group/order by ordinals — Postgres won't dedupe a $-parameterised
+    // date_trunc() between SELECT and GROUP BY otherwise.
     rollupRows = await sql<any[]>`
       SELECT
         monitor_id,
@@ -141,8 +143,8 @@ export async function loadMonitors(pageId: string, window: Window): Promise<Moni
       FROM pings
       WHERE monitor_id = ANY(${sql.array(ids)}::text[])
         AND checked_at > date_trunc(${truncUnit}, now()) - ${intervalLiteral}::interval
-      GROUP BY monitor_id, date_trunc(${truncUnit}, checked_at)
-      ORDER BY monitor_id, bucket_start ASC
+      GROUP BY 1, 2
+      ORDER BY 1, 2 ASC
     `;
   }
   // Index actual rollup data by (monitor_id, isoBucketStart) so we can fill in