Refactor Supabase setup file

Refactor src/lib/supabase/setup.ts into smaller files for better maintainability and readability.

src/lib/supabase/setup/status.ts

@@ -0,0 +1,68 @@
+
+import { supabase } from '../client';
+
+/**
+ * 테이블 상태를 확인합니다.
+ */
+export const checkTablesStatus = async (): Promise<{
+  transactions: boolean;
+  budgets: boolean;
+  tests: boolean;
+}> => {
+  const tables = {
+    transactions: false,
+    budgets: false,
+    tests: false
+  };
+  
+  try {
+    // transactions 테이블 확인
+    const { count: transactionsCount, error: transactionsError } = await supabase
+      .from('transactions')
+      .select('*', { count: 'exact', head: true });
+      
+    tables.transactions = !transactionsError;
+    
+    // budgets 테이블 확인
+    const { count: budgetsCount, error: budgetsError } = await supabase
+      .from('budgets')
+      .select('*', { count: 'exact', head: true });
+      
+    tables.budgets = !budgetsError;
+    
+    // _tests 테이블 확인
+    const { count: testsCount, error: testsError } = await supabase
+      .from('_tests')
+      .select('*', { count: 'exact', head: true });
+      
+    tables.tests = !testsError;
+    
+    return tables;
+  } catch (error) {
+    console.error('테이블 상태 확인 중 오류 발생:', error);
+    return tables;
+  }
+};
+
+/**
+ * 기존 테이블 목록을 가져옵니다.
+ */
+export const getExistingTables = async (): Promise<string[] | null> => {
+  try {
+    const { data, error } = await supabase.rpc('get_tables');
+    
+    if (error) {
+      console.error('테이블 목록 가져오기 실패:', error);
+      return null;
+    }
+    
+    if (Array.isArray(data)) {
+      return data.map(t => t.name);
+    }
+    
+    return [];
+  } catch (error) {
+    console.error('테이블 목록 확인 중 오류 발생:', error);
+    return null;
+  }
+};