test: add tackle query acceptance gate

deploy/test-tackle-query-plans.sh

@@ -0,0 +1,24 @@
+#!/bin/sh
+set -eu
+
+repo=$(CDPATH= cd -- "$(dirname "$0")/.." && pwd)
+output=$(mktemp)
+cleanup() { rm -f "$output"; }
+trap cleanup EXIT INT TERM
+
+docker compose exec -T db psql -X -U rf4 -d rf4_spotter \
+  < "$repo/deploy/tackle-query-plan-gate.sql" > "$output"
+
+for plan in tackle_catalog_filter tackle_combinations; do
+  grep -F "PLAN $plan" "$output" >/dev/null
+done
+
+awk '
+  /Execution Time:/ { count += 1; if (($3 + 0) > 250) { print "Tackle query plan exceeded 250 ms: " $0 > "/dev/stderr"; failed = 1 } }
+  END { if (count != 2 || failed) exit 1 }
+' "$output"
+
+grep -A40 'PLAN tackle_catalog_filter' "$output" | grep -Eq 'Index Scan|Index Only Scan|Bitmap Index Scan'
+grep -A60 'PLAN tackle_combinations' "$output" | grep -Eq 'Index Scan|Bitmap Index Scan'
+grep 'Execution Time:' "$output"
+echo "Tackle query-plan gate passed: indexed catalog and combination paths under 250 ms"