TWD 顯示改為整數（四捨五入到個位）

android/app/src/main/java/tw/local/botrates/MainActivity.kt

@@ -86,10 +86,10 @@ private fun parseAmount(s: String): Double? =
     s.filter { it != ',' && !it.isWhitespace() }.takeIf { it.isNotEmpty() }?.toDoubleOrNull()
 
 private fun roundHalfUp(v: Double): BigDecimal =
-    BigDecimal.valueOf(v).setScale(2, RoundingMode.HALF_UP)
+    BigDecimal.valueOf(v).setScale(0, RoundingMode.HALF_UP)
 
 private fun formatTwd(v: Double): String =
-    DecimalFormat("#,##0.00").format(roundHalfUp(v))
+    DecimalFormat("#,##0").format(roundHalfUp(v))
 
 private fun formatTwdRaw(v: Double): String =
     roundHalfUp(v).toPlainString()