v0.165.1: native Megosztás… button in the share modal (Web Share API)

Feature-detected navigator.share opens the OS share sheet with title+text+URL only
(no QR files: — narrow support drops the URL when given file+URL). Hidden unless
supported; Link másolása stays the universal fallback and catches the non-cancel
rejection; AbortError is silent. Template JS + tests only. 2 red-proofs verified red.

controller/internal/web/templates/launcher.html

@@ -59,6 +59,7 @@
             <div class="share-link-row">
                 <input id="share-link-input" type="text" readonly value="{{.ShareURL}}">
                 <button type="button" id="share-copy-btn" class="btn btn-outline" onclick="copyShareLink()">Link másolása</button>
+                <button type="button" id="share-native-btn" class="btn btn-outline" style="display:none" onclick="nativeShare()">Megosztás…</button>
             </div>
         </div>
         <div class="share-qr">
@@ -124,9 +125,19 @@ function copyShareLink(){
     if(navigator.clipboard&&navigator.clipboard.writeText){navigator.clipboard.writeText(inp.value).then(done,function(){inp.select();done();});}
     else{inp.select();try{document.execCommand('copy');}catch(e){}done();}
 }
+// Native OS share sheet (Web Share API, feature-detected). URL + title/text only — never the QR as a
+// file: file-share support is narrow and several targets drop the URL when handed file+URL. On a
+// non-cancel rejection, fall back to the universal clipboard copy so the user still keeps the link.
+function nativeShare(){
+    var inp=document.getElementById('share-link-input');
+    if(!inp||!navigator.share)return;
+    navigator.share({title:'Indítópult — {{.Domain}}',text:'Az otthoni alkalmazások egy helyen.',url:inp.value})
+        .catch(function(e){if(e&&e.name==='AbortError')return;copyShareLink();});
+}
 (function(){
     var m=document.getElementById('share-modal');
     if(m){m.addEventListener('click',function(e){if(e.target===m)closeShareModal();});}
+    if(navigator.share){var nb=document.getElementById('share-native-btn');if(nb)nb.style.display='';}
     {{if .ShareFlash}}openShareModal();{{end}}
 })();
 </script>