Remove income transaction option

Removes the income transaction option from the add transaction button.
Keeps only the expense transaction option with neuro-income color.

src/components/AddTransactionButton.tsx

@@ -1,6 +1,6 @@
 
 import React, { useState } from 'react';
-import { PlusIcon, MinusIcon, X } from 'lucide-react';
+import { MinusIcon, X } from 'lucide-react';
 import { cn } from '@/lib/utils';
 import { useNavigate } from 'react-router-dom';
 
@@ -15,31 +15,17 @@ const AddTransactionButton = () => {
     // navigate('/add-transaction', { state: { type: 'expense' } });
   };
   
-  const handleAddIncome = () => {
-    // 여기에 수입 추가 로직을 구현할 수 있습니다
-    setIsOpen(false);
-    // 향후 트랜잭션 추가 페이지로 이동할 수 있습니다
-    // navigate('/add-transaction', { state: { type: 'income' } });
-  };
-  
   return (
     <div className="fixed bottom-24 right-6 z-20">
       {isOpen && (
         <div className="absolute bottom-16 right-0 flex flex-col gap-3 items-end animate-slide-up">
           <button 
-            className="neuro-flat p-4 text-neuro-expense flex items-center gap-2"
+            className="neuro-flat p-4 text-neuro-income flex items-center gap-2"
             onClick={handleAddExpense}
           >
             <span className="text-sm font-medium">지출</span>
             <MinusIcon size={18} />
           </button>
-          <button 
-            className="neuro-flat p-4 text-neuro-income flex items-center gap-2"
-            onClick={handleAddIncome}
-          >
-            <span className="text-sm font-medium">수입</span>
-            <PlusIcon size={18} />
-          </button>
         </div>
       )}
       
@@ -53,7 +39,7 @@ const AddTransactionButton = () => {
         onClick={() => setIsOpen(!isOpen)}
         aria-label={isOpen ? "닫기" : "거래 추가"}
       >
-        {isOpen ? <X size={24} /> : <PlusIcon size={24} />}
+        {isOpen ? <X size={24} /> : <MinusIcon size={24} />}
       </button>
     </div>
   );