Make the AI a little smarter.

internal/game/golden45_test.go

@@ -171,6 +171,11 @@ func TestSelfFaintWithReserveStillWins(t *testing.T) {
 	if res.WinnerSeat != 0 {
 		t.Fatalf("seat 0 should win with a reserve pet vs an all-food deck, got winner %d", res.WinnerSeat)
 	}
+	// The survivor margin reflects the leftover force: seat 0's unrevealed
+	// Reserve still counts, seat 1 has nothing.
+	if got := res.Survivors; len(got) != 2 || got[0] < 1 || got[1] != 0 {
+		t.Fatalf("survivors should be [>=1, 0], got %v", got)
+	}
 }
 
 // Poison Dart Frog, once set aside, throws rocks each time a Bee is played.