Switch dev port to 3000, drop dashboard quick actions and header active highlight

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/routes/+page.svelte

@@ -26,13 +26,6 @@
   </div>
 </div>
 
-<div class="card quick">
-  <strong>{$t('dashboard.quick_actions')}</strong>
-  <a href="/parts/new">{$t('nav.new_part')}</a>
-  <a href="/movements/new">{$t('nav.new_movement')}</a>
-  <a href="/parts">{$t('nav.parts')}</a>
-</div>
-
 <h2>{$t('dashboard.low_stock_list')}</h2>
 {#if lowStock.length === 0}
   <p class="muted">{$t('common.none')}</p>
@@ -103,7 +96,4 @@
   }
   .stat .value.warn { color: #b8443f; }
   .stat .cur { font-size: 0.85rem; color: #6b7388; margin-left: 0.25rem; }
-
-  .quick { display: flex; align-items: center; gap: 1rem; margin: 1rem 0; }
-  .quick strong { margin-right: auto; }
 </style>