Add a feed no longer asks for a folder (#201)

A feed's settings stopped showing its folder in 0.10.3; the dialog that adds one
still asked for it. The API keeps its folder for scripts.

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

web/src/dialogs.ts

@@ -15,7 +15,6 @@ $('#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">
       <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>
@@ -27,7 +26,7 @@ $('#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, allow_explicit:$('#nexp').checked,
+        url, allow_explicit:$('#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);