Test that Skunk's strip faints a pet dropped below its damage.

internal/game/battle_test.go

@@ -714,3 +714,25 @@ func TestBattleResultExposesLineups(t *testing.T) {
 		t.Fatalf("seat 1 lineup should mirror its arranged deck: %+v", res.Lineups[1])
 	}
 }
+
+// A Skunk that strips a buffed pet's apples must drop that pet below its
+// damage markers so it faints on the spot, rather than lingering at what is
+// effectively negative health.
+func TestSkunkStripFaintsDebuffedPet(t *testing.T) {
+	g, _, _ := testGame(t)
+	// Seat 1 fields a 3-power pet wearing three apples (effectively 6 power).
+	buffed := []Card{g.newApple(), g.newApple(), g.newApple(), g.pet("Buffed", 3)}
+	// Seat 0's Ram (4 power) trades in first: Ram dies, Buffed survives with 4
+	// damage (still under its buffed 6 power). Then the Skunk strips the
+	// apples, dropping Buffed to 3 power < 4 damage — it must faint at once.
+	mine := []Card{g.pet("Ram", 4), g.realPet(t, "Skunk")}
+	res := forceBattle(t, g, mine, buffed)
+
+	strips := eventsOfType(res, "strip")
+	if len(strips) != 1 || !strips[0].TargetDied {
+		t.Fatalf("skunk strip should faint the de-buffed pet: %+v", strips)
+	}
+	if res.WinnerSeat != 0 {
+		t.Fatalf("skunk should win once the stripped pet faints, got %d", res.WinnerSeat)
+	}
+}