Assert the smoke run moves the Gate 0 counters.

AGENT_CHAT.md

@@ -1,5 +1,9 @@
 # RedlineDB Agent Chat
 
+## 2026-09-24T20:40Z bench/qps-counter-smoke
+
+Claim: canonical checkout `/home/ubuntu/redlineDB`, branch `bench/qps-counter-smoke` from `origin/main` `c90ed5fc1ff3570c5a2d5c712853bec588f5d626`. The queries-per-second smoke test asserts the Redline counter delta is non-zero for checksum bytes, leaf rebuilds, and row gets or decodes. No speed threshold, no scale change, no Postgres, no default SQL change. No worktree.
+
 ## 2026-09-24T19:45Z perf/ci-safe-locks
 
 Claim: canonical checkout `/home/ubuntu/redlineDB`, branch `perf/ci-safe-locks` from `origin/main` `352339d111558ecf3025732b03e336add4dd3596` (pull request 113). Direct leaf insert stays off unless `REDLINEDB_LEAF_DIRECT_INSERT=1`. Tests lock nested-loop join order and `LIMIT 1` against the full scan. Static row batches now honor that LIMIT/OFFSET; a plain table scan was returning every row. No worktree.

crates/bench/src/qps.rs

@@ -668,6 +668,27 @@ mod tests {
                 .iter()
                 .any(|r| r.phase == "pk_point" && r.redline_over_sqlite > 0.0)
         );
+        let redline = report
+            .engines
+            .iter()
+            .find(|engine| engine.engine == "redline")
+            .expect("redline");
+        let observe = redline.observe.as_ref().expect("redline counters");
+        assert!(observe.checksum_bytes > 0);
+        assert!(
+            observe.rewrite_leaf_calls > 0,
+            "default leaf insert still rebuilds the page"
+        );
+        assert!(observe.relation_gets > 0 || observe.sql_row_decodes > 0);
+        assert!(
+            report
+                .engines
+                .iter()
+                .find(|engine| engine.engine == "sqlite")
+                .expect("sqlite")
+                .observe
+                .is_none()
+        );
     }
 
     #[test]