feat(multiplayer): sweep initial connect outcomes

server/store/initial_connect_sql_test.go

@@ -9,6 +9,9 @@ import (
 )
 
 func TestInitialConnectSQLPreservesAtomicNoShowReconciliation(t *testing.T) {
+	if !contains(initialConnectCandidatesSQL, "ASSIGNMENT_READY") || !contains(initialConnectCandidatesSQL, "LIMIT $1") {
+		t.Fatal("initial-connect sweep is not bounded to pre-live matches")
+	}
 	for query, fragments := range map[string][]string{
 		initialConnectIdempotencyInsertSQL: {"ON CONFLICT", "payload_digest"},
 		initialConnectMatchLockSQL:         {"FOR UPDATE", "match_id = $1"},