Native video: readable tile labels (red mute, name chip) + flip camera

Label legibility: the name + mute overlays were both white/invisible.
- Mute badge is now a RED (#dc2626) circle with a white mic-slash, matching
  the web tile's .meet-mute, moved to the top-left.
- Name is now white on a dark translucent pill (PaddingLabel) so it stays
  legible over any video, bottom-left.

Front/back camera switch: new NativeCall.switchCamera() flips the local
CameraCapturer front<->back (switchCameraPosition, verified in 2.15.3). New
"Flip camera" button on the meeting bar (switchCamera icon), shown only
while a native call's camera is on (updateFlipBtn). Mirroring auto-corrects
(VideoView mirrorMode .auto only mirrors the front camera).

Needs a Codemagic build (plugin change). Web deployed.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

server/public/home.html

@@ -4881,6 +4881,7 @@ function renderCall(){
     + '<span class="mic-grp"><button class="meet-ic'+(meetMic?'':' off')+'" id="meetMicBtn" title="'+(meetMic?'Mute':'Unmute')+'">'+ic(meetMic?'mic':'micOff',20)+'</button>'
     +   '<button class="mic-caret" id="meetAudioBtn" title="Audio devices (mic & speaker)">'+ic('chevronUp',12)+'</button></span>'
     + '<button class="meet-ic'+(meetCam?'':' off')+'" id="meetCamBtn" title="'+(meetCam?'Turn camera off':'Turn camera on')+'">'+ic(meetCam?'video':'videoOff',20)+'</button>'
+    + '<button class="meet-ic" id="meetFlipBtn" title="Flip camera" style="display:none">'+ic('switchCamera',20)+'</button>' // native video calls only (see updateFlipBtn)
     // Mobile keeps only Mic / Camera / Speaker / End on the bar (#8e); everything else moves behind ⋮ More.
     + '<button class="meet-ic sec-btn" id="meetScreenBtn" title="Share screen">'+ic('monitor',20)+'</button>'
     + '<button class="meet-ic host-only sec-btn" id="meetRecBtn" title="Record meeting" style="display:none">'+ic('record',20)+'</button>'
@@ -4892,6 +4893,7 @@ function renderCall(){
     + '<button class="meet-ic leave" id="meetLeaveBtn" title="Leave">'+ic('callEnd',20)+'</button></div></div>';
   document.getElementById('meetMicBtn').onclick=toggleMic;
   document.getElementById('meetCamBtn').onclick=toggleCam;
+  { const fb=document.getElementById('meetFlipBtn'); if(fb) fb.onclick=flipCamera; }
   document.getElementById('meetScreenBtn').onclick=toggleScreen;
   document.getElementById('meetRecBtn').onclick=toggleRecord;
   { const tb=document.getElementById('meetTransBtn'); if(tb) tb.onclick=toggleTranscribe; }
@@ -5473,7 +5475,11 @@ async function onMeetMsg(e){
   if(m.type==='error'){ const msg=m.message; leaveMeeting(true); const e2=document.getElementById('meetErr'); if(e2) e2.textContent=msg||'Meeting error'; return; }
 }
 function updateMicBtn(){ const b=document.getElementById('meetMicBtn'); if(b){ b.classList.toggle('off',!meetMic); b.title=meetMic?'Mute':'Unmute'; b.innerHTML=ic(meetMic?'mic':'micOff',20); } }
-function updateCamBtn(){ const b=document.getElementById('meetCamBtn'); if(b){ b.classList.toggle('off',!meetCam); b.title=meetCam?'Turn camera off':'Turn camera on'; b.innerHTML=ic(meetCam?'video':'videoOff',20); } }
+function updateCamBtn(){ const b=document.getElementById('meetCamBtn'); if(b){ b.classList.toggle('off',!meetCam); b.title=meetCam?'Turn camera off':'Turn camera on'; b.innerHTML=ic(meetCam?'video':'videoOff',20); } updateFlipBtn(); }
+// Flip front/back camera — native calls only (the plugin owns the camera). The button shows only while a
+// native call's camera is on.
+function flipCamera(){ const NC=nativeCallPlugin(); if(NC&&NC.switchCamera){ try{ NC.switchCamera(); }catch(_){} } }
+function updateFlipBtn(){ const b=document.getElementById('meetFlipBtn'); if(b) b.style.display=(meetNative&&meetCam)?'inline-flex':'none'; }
 // Unmute acquires the mic on demand (no prompt until then) and renegotiates with peers.
 async function toggleMic(){
   if(!meetLocalStream) return;

server/public/icons.js

@@ -64,6 +64,7 @@
     calendarClock:'<path d="M21 7.5V6a2 2 0 0 0-2-2H5a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h3.5"/><path d="M16 2v4"/><path d="M8 2v4"/><path d="M3 10h5"/><circle cx="16" cy="16" r="6"/><path d="M16 14v2l1.5 1"/>',
     fileText:    '<path d="M15 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V7Z"/><path d="M14 2v4a2 2 0 0 0 2 2h4"/><path d="M16 13H8"/><path d="M16 17H8"/><path d="M10 9H8"/>',
     externalLink:'<path d="M15 3h6v6"/><path d="M10 14 21 3"/><path d="M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h6"/>',
+    switchCamera:'<path d="M11 19H4a2 2 0 0 1-2-2V7a2 2 0 0 1 2-2h5"/><path d="M13 5h7a2 2 0 0 1 2 2v10a2 2 0 0 1-2 2h-5"/><circle cx="12" cy="12" r="3"/><path d="m18 22-3-3 3-3"/><path d="m6 2 3 3-3 3"/>',
     record:      '<circle cx="12" cy="12" r="9"/><circle cx="12" cy="12" r="3.5" fill="currentColor"/>',
     callEnd:     '<g transform="rotate(135 12 12)"><path d="M22 16.92v3a2 2 0 0 1-2.18 2 19.79 19.79 0 0 1-8.63-3.07 19.5 19.5 0 0 1-6-6 19.79 19.79 0 0 1-3.07-8.67A2 2 0 0 1 4.11 2h3a2 2 0 0 1 2 1.72 12.84 12.84 0 0 0 .7 2.81 2 2 0 0 1-.45 2.11L8.09 9.91a16 16 0 0 0 6 6l1.27-1.27a2 2 0 0 1 2.11-.45 12.84 12.84 0 0 0 2.81.7A2 2 0 0 1 22 16.92z"/></g>',
     settings:    '<path d="M12.22 2h-.44a2 2 0 0 0-2 2v.18a2 2 0 0 1-1 1.73l-.43.25a2 2 0 0 1-2 0l-.15-.08a2 2 0 0 0-2.73.73l-.22.38a2 2 0 0 0 .73 2.73l.15.1a2 2 0 0 1 1 1.72v.51a2 2 0 0 1-1 1.74l-.15.09a2 2 0 0 0-.73 2.73l.22.38a2 2 0 0 0 2.73.73l.15-.08a2 2 0 0 1 2 0l.43.25a2 2 0 0 1 1 1.73V20a2 2 0 0 0 2 2h.44a2 2 0 0 0 2-2v-.18a2 2 0 0 1 1-1.73l.43-.25a2 2 0 0 1 2 0l.15.08a2 2 0 0 0 2.73-.73l.22-.39a2 2 0 0 0-.73-2.73l-.15-.08a2 2 0 0 1-1-1.74v-.5a2 2 0 0 1 1-1.74l.15-.09a2 2 0 0 0 .73-2.73l-.22-.38a2 2 0 0 0-2.73-.73l-.15.08a2 2 0 0 1-2 0l-.43-.25a2 2 0 0 1-1-1.73V4a2 2 0 0 0-2-2z"/><circle cx="12" cy="12" r="3"/>',