settings: open as v2 overlay instead of redirecting to old settings page

- Changed both tab bar ⚙ and status bar ⚙ buttons to open the
  inline Settings overlay (openOverlay('Settings')) with data loads
  instead of navigating to /settings (old Bootstrap page)
- The overlay was already fully built — HTML, CSS, JS loaders were all
  present, just never wired up

src/web/ui-v2-dist/index.html

@@ -786,16 +786,22 @@ function init(){
     btn.onclick=()=>{
       const view=btn.dataset.view;
       if(view==='main'){document.querySelectorAll('.tab-btn').forEach(b=>b.classList.remove('active'));btn.classList.add('active');}
-      else if(view==='settings'){window.location.href='/settings';return;}
+      else if(view==='settings'){openOverlay('Settings');loadNetworkInfo();loadSystemInfo();loadAudioProfiles();loadHotspotStatus();loadBtStatus();loadBtMidi();return;}
       else if(view==='presets'){openOverlay('Presets');loadPresets();}
       else if(view==='snapshots'){openOverlay('Snapshots');loadSnapshots();}
       else if(view==='downloads')openOverlay('Downloads');
     };
   });
 
-  // Status bar: settings → navigate to full settings page
+  // Status bar: settings → open settings overlay
   document.getElementById('btnSettings').onclick=()=>{
-    window.location.href='/settings';
+    openOverlay('Settings');
+    loadNetworkInfo();
+    loadSystemInfo();
+    loadAudioProfiles();
+    loadHotspotStatus();
+    loadBtStatus();
+    loadBtMidi();
   };
 
   // Close all overlays