Add more diagnostics

Author: jy-tan

src/instrumentation/libraries/e2e-common/base-entrypoint.sh

@@ -266,6 +266,19 @@ if [ "$TRACE_COUNT" -eq 0 ]; then
   exit 1
 fi
 
+# Print focused trace-presence diagnostics for flaky SQL replay mismatches.
+# This helps distinguish "not recorded" from "recorded but not matched in replay".
+log "Trace SQL presence checks (recorded traces):" "$BLUE"
+SQL_PATTERNS=(
+  "SELECT COUNT\\(\\*\\) as total FROM test_users"
+  "SAVEPOINT"
+  "ROLLBACK"
+)
+for pattern in "${SQL_PATTERNS[@]}"; do
+  count=$(grep -R -E -c "$pattern" .tusk/traces 2>/dev/null | awk -F: '{s+=$2} END {print s+0}')
+  log "  pattern='$pattern' count=$count" "$BLUE"
+done
+
 # ============================================================
 # Phase 3: Run Tusk Tests
 # ============================================================