Share songs, albums, movies, shows, podcasts and audiobooks to chat as cards

A share message carries kind, title, subtitle, same-origin art and a hash-route
link, validated on the server. It counts as unread, reads as '🎵 Shared a song:
Title' in pushes and Notifications, and is found by search. In Chat a card opens
the item, or says it is not available when the recipient lacks that tab.

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

public/music.js

@@ -155,8 +155,9 @@ async function musicRoute([kind = 'featured', key, key2], st) {
   if (kind === 'artist') {
     const [mc, am] = await Promise.all([px.get(`/library/metadata/${key}/children`), px.get(`/library/metadata/${key}`).catch(() => ({}))]), about = ((am.Metadata || [])[0] || {}).summary || '';
     v.innerHTML = `<div class="wrap"><div class="bar"><a class="btn ghost" href="#/music/artists">${icon('back')}Artists</a></div><h1>${esc(mc.title2 || mc.parentTitle || 'Artist')}</h1>
-      ${about ? `<details class="mmabout"><summary>About</summary><p>${esc(about).replace(/\n/g, '<br>')}</p></details>` : ''}<div class="bar" style="justify-content:flex-start"><a class="btn ghost" href="#/music/mix/similar/${esc(key)}">${icon('shuffle')}More like this</a></div>
+      ${about ? `<details class="mmabout"><summary>About</summary><p>${esc(about).replace(/\n/g, '<br>')}</p></details>` : ''}<div class="bar" style="justify-content:flex-start"><a class="btn ghost" href="#/music/mix/similar/${esc(key)}">${icon('shuffle')}More like this</a>${allowed('chat') ? `<button class="btn ghost" id="ash">${icon('send')}Share</button>` : ''}</div>
       <h2>Albums</h2><div class="agrid">${(mc.Metadata || []).map(a => card('#/music/album/' + a.ratingKey, a.thumb, a.title, a.year || '')).join('')}</div></div>`;
+    if ($('#ash')) $('#ash').onclick = () => shareMedia({ kind: 'artist', title: mc.title2 || mc.parentTitle || 'Artist', art: px.art((am.Metadata || [])[0] && am.Metadata[0].thumb, 200), link: '#/music/artist/' + key });
     return;
   }
   if (kind === 'album' || kind === 'playlist') {
@@ -171,7 +172,7 @@ async function musicRoute([kind = 'featured', key, key2], st) {
     v.innerHTML = `<div class="wrap"><div class="bar"><a class="btn ghost" href="#/music/${album ? 'albums' : 'playlists'}">${icon('back')}${album ? 'Albums' : 'Playlists'}</a></div>
       <div class="mhead"><img class="art" alt="" src="${px.art(thumb, 400)}"><div><h1>${esc(title)}</h1><p class="sub">${esc(sub)}</p></div></div>
       ${info.summary ? `<details class="mmabout"><summary>About</summary><p>${esc(info.summary).replace(/\n/g, '<br>')}</p></details>` : ''}
-      <div class="bar"><button class="btn" id="pa">${icon('play')}Play</button><button class="btn ghost" id="ps">${icon('shuffle')}Shuffle</button>${album ? '<button class="btn ghost" id="pof">Save offline</button>' : ''}${mine ? '<button class="btn ghost" id="prn">Rename</button><button class="btn ghost" id="pdel">Delete</button>' : ''}</div>
+      <div class="bar"><button class="btn" id="pa">${icon('play')}Play</button><button class="btn ghost" id="ps">${icon('shuffle')}Shuffle</button>${album ? '<button class="btn ghost" id="pof">Save offline</button>' : ''}${album && allowed('chat') ? `<button class="btn ghost" id="psh">${icon('send')}Share</button>` : ''}${album && allowed('chat') ? `<button class="btn ghost" id="psh">${icon('send')}Share</button>` : ''}${mine ? '<button class="btn ghost" id="prn">Rename</button><button class="btn ghost" id="pdel">Delete</button>' : ''}</div>
       <div class="list">${tracks.map((t, i) => `<div class="row it" data-i="${i}"><button class="rmain" data-p="${i}"><span class="num">${i + 1}</span>
         <span class="grow"><b>${esc(t.title)}</b>${album ? '' : `<small>${esc(t.artist)}</small>`}</span><small>${fmtDur(t.dur)}</small></button>
         <button class="ibtn" data-fv="${esc(t.key)}" data-fi="${i}" aria-label="Favorite">${icon('heart')}</button><button class="ibtn" data-m="${i}" aria-label="Track actions">${icon('more')}</button></div>`).join('') || '<p class="empty">No playable tracks</p>'}</div></div>`;
@@ -182,6 +183,8 @@ async function musicRoute([kind = 'featured', key, key2], st) {
       $('#prn').onclick = () => textSheet('Rename playlist', 'Playlist name', 'Rename', async n => { try { await plx.rename(key, n); route(); } catch (e) { toast(e.message); } }, title);
       $('#pdel').onclick = () => confirmSheet('Delete playlist?', title, 'Delete', async () => { try { await plx.del(key); toast('Playlist deleted'); location.hash = '#/music/playlists'; } catch (e) { toast(e.message); } });
     }
+    if ($('#psh')) $('#psh').onclick = () => shareMedia({ kind: 'album', title, sub, art: px.art(thumb, 200), link: '#/music/album/' + key });
+    if ($('#psh')) $('#psh').onclick = () => shareMedia({ kind: 'album', title, sub, art: px.art(thumb, 200), link: '#/music/album/' + key });
     $('#pa').onclick = () => tracks.length && playQueue(tracks, 0);
     $('#ps').onclick = () => tracks.length && playQueue(shuffled(tracks), 0, true);
     markPlaying();