feat(saju): 사주풀이 5 컴포넌트 + useSajuReading hook

src/pages/saju/components/MonthlyFlow.jsx

@@ -0,0 +1,26 @@
+import React from 'react';
+
+const LABEL_COLOR = {
+  '성장': '#4B7065',
+  '안정': '#D4A574',
+  '변동': '#6A5285',
+  '도전': '#C58F76',
+  '정체': '#888',
+};
+
+export default function MonthlyFlow({ flow }) {
+  if (!flow || flow.length === 0) return null;
+  return (
+    <div className="saju-monthly-flow">
+      {flow.map((m) => (
+        <div key={m.month} className="saju-monthly-flow__cell">
+          <span className="saju-monthly-flow__month">{m.month}월</span>
+          <span className="saju-monthly-flow__score" style={{ color: LABEL_COLOR[m.label] }}>
+            {m.score}
+          </span>
+          <span className="saju-monthly-flow__label">{m.label}</span>
+        </div>
+      ))}
+    </div>
+  );
+}