3D families move from the effect library to the Animazioni 3D tab

'Modello 3D', 'Interattivo Modello' and 'Interattivo Avatar' no longer
appear in the Effetti family filter or the preset list: the new
'Effetto 3D' block in the Animazioni 3D tab has its own family/preset
selectors (palette · variant) and an Attiva button, applying through the
same applyEffect path. Saved pads/sequences/scenes keep working (preset
indices untouched).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/control.html

@@ -151,6 +151,16 @@
     <!-- ============ PAD ============ -->
     <!-- ============ ANIMAZIONI 3D ============ -->
     <div class="tab-panel" data-tab="anim3d">
+      <section class="span2">
+        <label>Effetto 3D</label>
+        <div class="row">
+          <select id="glb-effect-fam"></select>
+          <select id="glb-effect-preset"></select>
+        </div>
+        <button id="glb-effect-go" class="wide">▶ Attiva sull'output</button>
+        <div class="hint-mini">Le famiglie 3D vivono qui (non più nella libreria Effetti):
+          “Modello 3D” balla da solo a tempo; le “Interattivo” usano la camera.</div>
+      </section>
       <section class="span2">
         <label>Modello 3D (GLB)</label>
         <button id="btn-glb-load" class="wide">🧊 Carica un modello .glb…</button>