Patreon creators split into their shows; filters follow settings

A Patreon token pasted into Add feed, or a creator link without
&show=, becomes a folder of that creator's shows, found through
Patreon's web API and kept in step like a subscribed OPML (sync_group,
split out of sync_opml). A creator already read as one feed is split
too: each show takes over the files and read state it held
(Db::adopt). A creator with one show stays a plain feed.

Filter verdicts are judged again every scan, so turning on Allow
explicit brings skipped items back. Add feed has an explicit box.
Feeds in a group follow your settings on the group, as its dialog
said. A new feed no longer takes the id of a removed one at a
different URL and shows its old items. See CHANGELOG.md [Unreleased]
and docs/history.md.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Wi22VSVrkAvqNj61eqHsm9

web/index.html

@@ -793,7 +793,7 @@ function renderFeeds(){
       (mine.length?`${mine.length} feed${mine.length===1?'':'s'} · ${saved} saved`
           :`${eps} items · ${saved} saved`)+
       `</small></div>`+
-      (f.orphaned?'<span class="tag" title="No longer listed in the OPML, kept because it has downloads">gone</span>':'')+
+      (f.orphaned?'<span class="tag" title="No longer listed, kept because it has downloads">gone</span>':'')+
       `<span class="badge${unread?'':' zero'}" title="${unread} unread">${unread>999?'999+':unread}</span>`;
     el.onclick=()=>{ selectFeed(f.id); nav(false); };
     if(kids) $('.chev',el).onclick=ev=>{ ev.stopPropagation(); toggleGroup(f.id); };
@@ -896,6 +896,9 @@ function sortBy(col){
 
 /// An OPML subscription's page lists the feeds inside it rather than items, but keeps
 /// every action a normal feed has -- it is still an ordinary feed entry underneath.
+// A Patreon creator split into its shows is drawn like an OPML, and named for what it is.
+const isPatreon=f=>/patreon\.com\//.test(f&&f.url||'');
+
 function renderGroup(f,kids){
   const unread=kids.reduce((n,c)=>n+c.unread,0);
   const saved=kids.reduce((n,c)=>n+c.downloaded,0);
@@ -907,12 +910,12 @@ function renderGroup(f,kids){
       ${artHTML(f.image,f.title||f.id)}
       <div class="meta">
         <h2>${esc(f.title||f.id)}</h2>
-        <div class="sub stat">OPML subscription · ${kids.length} feed${kids.length===1?'':'s'}
+        <div class="sub stat">${isPatreon(f)?'Patreon creator':'OPML subscription'} · ${kids.length} feed${kids.length===1?'':'s'}
           · ${unread} unread · ${saved} downloaded · checked ${ago(f.last_checked)}
           · every ${everyText(f.every_mins)}</div>
         ${f.last_error?`<div class="sub" style="color:var(--bad)">${esc(f.last_error)}</div>`:''}
         ${gone?`<div class="sub" style="color:var(--warn)">${gone} feed${gone===1?' is':'s are'} no longer
-          listed in this OPML but kept because ${gone===1?'it has':'they have'} downloads.</div>`:''}
+          listed but kept because ${gone===1?'it has':'they have'} downloads.</div>`:''}
       </div>
       <div class="acts">
         <button class="btn ico primary" data-a="scan" title="Re-read the OPML now" aria-label="Re-read the OPML now">${ICON.scan}</button>
@@ -1477,10 +1480,12 @@ $('#modal').onclick=e=>{ if(e.target.id==='modal') closeModal(); };
 
 $('#addFeed').onclick=()=>{
   openModal(`<h3>Add a feed</h3>
-    <div class="field"><label>Feed URL</label><input type="text" id="nurl" placeholder="https://example.com/rss"></div>
+    <div class="field"><label>Feed URL</label><input type="text" id="nurl" placeholder="https://example.com/rss">
+      <span class="hint">A Patreon token on its own adds every show from that creator.</span></div>
     <div class="field"><label>Folder (optional)</label><input type="text" id="nfolder" placeholder="Defaults to the feed title"></div>
     <div class="field"><label>Keywords (optional, comma separated)</label>
       <input type="text" id="nkw"><span class="hint">Only items matching a keyword are downloaded.</span></div>
+    <label class="check"><input type="checkbox" id="nexp"> Allow items marked explicit</label>
     <div class="field"><label>Popular on this server</label>
       <div class="childlist" id="popular"><p class="hint">Loading…</p></div></div>
     <div class="cardacts"><button class="btn ico" onclick="closeModal()" title="Cancel" aria-label="Cancel">${ICON.close}</button>
@@ -1492,7 +1497,7 @@ $('#addFeed').onclick=()=>{
     $('#nsave').disabled=true; $('#nsave').title='Adding…';
     try{
       const r=await api('/api/feeds',{method:'POST',body:JSON.stringify({
-        url, folder:$('#nfolder').value.trim()||null,
+        url, folder:$('#nfolder').value.trim()||null, allow_explicit:$('#nexp').checked,
         keywords:$('#nkw').value.split(',').map(s=>s.trim()).filter(Boolean)})});
       closeModal(); toast(r.existing?`Already subscribed as ${r.id}`:`Added ${r.id}`);
       await loadFeeds(true); selectFeed(r.id);
@@ -1704,10 +1709,10 @@ async function usersModal(){
 function settingsModal(f){
   const isGroup = S.feeds.some(c=>c.group===f.id);
   openModal(`<h3>${esc(f.title||f.id)}</h3>
-    ${isGroup?`<p class="hint" style="margin:-6px 0 12px">This is an OPML subscription. These
+    ${isGroup?`<p class="hint" style="margin:-6px 0 12px">This is ${isPatreon(f)?'a Patreon creator':'an OPML subscription'}. These
       settings apply to it and are inherited by every feed inside it.</p>`:''}
-    ${f.managed?`<p class="hint" style="margin:-6px 0 12px">This feed comes from an OPML
-      subscription and follows its settings. Saving anything here gives it its own entry in
+    ${f.managed?`<p class="hint" style="margin:-6px 0 12px">This feed comes from
+      ${isPatreon(S.feeds.find(p=>p.id===f.group))?'a Patreon creator':'an OPML subscription'} and follows its settings. Saving anything here gives it its own entry in
       config.toml, and it stops following the subscription's settings.</p>`:''}
     <p class="hint" style="margin:-4px 0 10px">These are <b>your</b> settings for this feed.
       Everyone else keeps their own.</p>