test: fail the gate when a suite exists that no gate runs

docs/testing.md

@@ -52,6 +52,7 @@ test/native_writer.sh    /path/to/pg_config  # native format catalog output
 test/native_roundtrip.sh /path/to/pg_config  # native write then read round-trip
 test/native_encoding.sh  /path/to/pg_config  # native per-vector encoding cascade
 test/native_zonemap.sh   /path/to/pg_config  # native zone maps
+test/write_minmax_fastpath.sh /path/to/pg_config # direct zone min/max comparison
 test/native_skip.sh      /path/to/pg_config  # native chunk and vector skipping
 test/native_agg.sh       /path/to/pg_config  # native aggregate paths
 test/native_agg_deletes.sh /path/to/pg_config  # per-row-group fold when rows are deleted

test/harness_selftest.sh

@@ -142,4 +142,56 @@ _verdict="$(pgc_cluster_is_ours && echo ours || echo foreign)"
 PGC_PORT="$_saved_port"
 check "guard rejects a foreign cluster" "$_verdict" "foreign"
 
+# ---------------------------------------------------------------------------
+# Every suite must be registered in the matrix.
+#
+# A suite that run_all_versions.sh does not list is never run by any gate. It
+# passes review, it sits in the tree, and the first change to the code under it
+# breaks it silently. This has happened repeatedly: four consecutive PRs added a
+# suite without registering it, and two older suites (native_reclaim_reconcile
+# among them) had never been run by a gate at all.
+#
+# The allowlist is deliberately short and each entry needs a reason, because the
+# easy way to satisfy this check is to add a name to it.
+# ---------------------------------------------------------------------------
+
+TESTDIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+RUNNER="$TESTDIR/run_all_versions.sh"
+
+# Not suites: the shared library, the runner itself, and the two developer
+# helpers that build rather than test. native_scale is a suite but is opt-in by
+# design and says so in its own header: it runs at a row count the matrix should
+# not carry.
+not_a_suite() {
+	case "$1" in
+		lib|run_all_versions|devloop|rebuild|native_scale) return 0 ;;
+		*) return 1 ;;
+	esac
+}
+
+# the SUITES=( ... ) array, flattened to one name per line
+listed_suites() {
+	awk '/^SUITES=\(/,/\)/' "$RUNNER" | tr ' \t' '\n\n' |
+		sed -e 's/^SUITES=(//' -e 's/)$//' -e 's/\\$//' |
+		grep -E '^[a-z0-9_]+$'
+}
+
+unregistered=""
+for f in "$TESTDIR"/*.sh; do
+	name="$(basename "$f" .sh)"
+	not_a_suite "$name" && continue
+	listed_suites | grep -qx "$name" || unregistered="$unregistered $name"
+done
+check "every suite is registered in run_all_versions.sh" \
+	"$([ -z "$unregistered" ] && echo none || echo "unregistered:$unregistered")" "none"
+
+# The reverse: a name in SUITES with no file is a rename or a typo, and the
+# runner would report it as a failure only when it tried to run it.
+missing_file=""
+while read -r name; do
+	[ -f "$TESTDIR/$name.sh" ] || missing_file="$missing_file $name"
+done < <(listed_suites)
+check "every registered suite has a file" \
+	"$([ -z "$missing_file" ] && echo none || echo "missing:$missing_file")" "none"
+
 pgc_summary

test/run_all_versions.sh

@@ -27,7 +27,7 @@ SRCDIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
 SUITES=(harness_selftest smoke phase2 phase3 phase4 phase5 phase6 audit concurrency unique_conc \
 	differential recovery fuzz hardening concurrent_diff parallel sorted_projection \
 	arrow_export parquet_export read_stream corruption \
-	generated_columns temporal arrow_import index_only projections arrow_nested parquet_import parquet_nested arrow_nested_import parquet_nested_import native_writer native_roundtrip native_encoding native_zonemap native_skip native_agg native_agg_deletes native_bloom native_vecskip native_index native_fetch_position native_dml native_ios native_projection native_cluster native_compact native_recluster native_reclaim native_ownership native_reclaim_cycles native_reclaim_frag native_gap native_truncate native_rewrite native_rewrite_conc native_parquet_schema native_read_parquet native_parquet_fdw native_parquet_pushdown native_parquet_hardening native_parquet_units native_parquet_flba native_parquet_codecs native_parquet_projection native_parquet_multifile native_parquet_streaming native_parquet_partition native_cancel wal_envelope decode_interrupts native_fetch_cache isolation)
+	generated_columns temporal arrow_import index_only projections arrow_nested parquet_import parquet_nested arrow_nested_import parquet_nested_import native_writer native_roundtrip native_encoding native_zonemap write_minmax_fastpath native_skip native_agg native_agg_deletes native_bloom native_vecskip native_index native_fetch_position native_dml native_ios native_projection native_cluster native_compact native_recluster native_reclaim native_ownership native_reclaim_cycles native_reclaim_frag native_reclaim_reconcile native_gap native_truncate native_rewrite native_rewrite_conc native_parquet_schema native_read_parquet native_parquet_fdw native_parquet_pushdown native_parquet_hardening native_parquet_units native_parquet_flba native_parquet_codecs native_parquet_projection native_parquet_multifile native_parquet_streaming native_parquet_partition native_cancel wal_envelope decode_interrupts native_fetch_cache isolation)
 
 # Default matrix: one assert-enabled pg_config per major, 15 through 19.
 DEFAULT_CONFIGS=(