v0.4.1: UI opgeschoond — tabbladen, iconen, uniforme labels, T-cyclus

- core/ui-kit.js: gedeelde velden/schakelaars/tabs/specificatiekaarten
- Bootstrap Icons lokaal (css/vendor, font ingebed)
- Woning- en unit-instellingen in tabbladen, labels gestandaardiseerd
- Specificaties onder 3D als kaarten
- T: standaard -> 3D groot -> alleen render -> standaard

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

index.html

@@ -10,6 +10,7 @@
   <meta charset="UTF-8">
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <title>Tectum — Van Emous Mantelzorgwoningen</title>
+  <link rel="stylesheet" href="css/vendor/bootstrap-icons.min.css">
   <link rel="stylesheet" href="css/app.css">
   <script src="js/vendor/three.min.js"></script>
   <script src="js/vendor/OrbitControls.js"></script>
@@ -52,8 +53,8 @@
       <button id="menu-beeld-btn" class="menu-btn">Beeld</button>
       <div id="menu-beeld-dropdown" class="menu-dropdown">
         <div class="menu-item" id="menu-fullscreen"><span>Volledig scherm</span><span class="menu-hotkey">F</span></div>
-        <div class="menu-item" id="menu-3d-fullscreen"><span>3D volledig scherm</span><span class="menu-hotkey">T</span></div>
-        <div class="menu-item" id="menu-2d-fullscreen"><span>2D volledig scherm</span><span class="menu-hotkey">R</span></div>
+        <div class="menu-item" id="menu-3d-fullscreen"><span>3D groot / alleen render</span><span class="menu-hotkey">T</span></div>
+        <div class="menu-item" id="menu-2d-fullscreen"><span>2D groot</span><span class="menu-hotkey">R</span></div>
       </div>
     </div>
 
@@ -116,6 +117,7 @@
   <script src="js/core/canvas-labels.js"></script>
   <script src="js/core/camera-memory.js"></script>
   <script src="js/core/view-filter.js"></script>
+  <script src="js/core/ui-kit.js"></script>
   <script src="js/vendor/jspdf.umd.min.js"></script>
   <script src="js/core/pdf-sheet.js"></script>
   <script src="js/wall/wall-model.js"></script>