T19-T28: distribusi profit harian (distribute.py, /history, tests)

templates/index.html

@@ -13,7 +13,7 @@
   <header class="top-nav">
     <span class="nav-label">DAFTAR</span>
     <span class="wordmark">DATABISNISID</span>
-    <span class="nav-label">VEX</span>
+    <span class="nav-label"><a class="nav-link" href="{{ url_for('history') }}">RIWAYAT</a></span>
   </header>
 
   <main class="page">