diff --git a/data-browser-panes.js b/data-browser-panes.js
index e0a654e..0072d0f 100644
--- a/data-browser-panes.js
+++ b/data-browser-panes.js
@@ -10,9 +10,18 @@
 //   3. No matching pane → pretty-printed JSON-LD (same as data-browser.js).
 //
 // Single file, no build, no framework. Local pane contract (ES module):
-//   export default { canHandle(node, h) -> boolean, render(node, h) -> htmlString }
-// where h = { escape, prop, propAll, first, idOf, types, host, fmtDate, localName }.
-// (prop may return an array for multi-valued JSON-LD; use h.first for single values.)
+//   export default {
+//     canHandle(node, h) -> boolean,
+//     render(node, h)    -> htmlString | Promise<htmlString>   // null/'' declines
+//   }
+// Panes are offered BOTH single resources and containers (h.isContainer marks
+// which). A pane that returns null is skipped, so a container pane can decline a
+// folder it doesn't recognise and fall through to the folder table.
+// h = { escape, prop, propAll, first, idOf, types, host, fmtDate, localName,
+//       isContainer, path, children, fetchResource(url) }
+//   - prop may return an array for multi-valued JSON-LD; use h.first for one value.
+//   - children: parsed [{ url, type, ... }] of a container's members.
+//   - fetchResource(url): async, returns a child's primary node (for collections).
 
 document.head.insertAdjacentHTML('beforeend', `<style>
 body{font:14px/1.55 system-ui,-apple-system,sans-serif;margin:0;color:#222;background:#f3eee5}
@@ -65,18 +74,33 @@ body{font:14px/1.55 system-ui,-apple-system,sans-serif;margin:0;color:#222;backg
     const items = doc ? parseContainer(doc, window.location.href) : null;
     const isContainer = Array.isArray(items);
 
-    const target = document.getElementById('mashlib');
-    if (isContainer) {
-      target.innerHTML = `<div class="db">${navHTML}<div class="db-card">${renderFolder(items, here)}</div></div>`;
-      return;
-    }
-
-    // Single resource: try a pod-local pane, else fall back to the JSON dump.
     const node = primaryNode(doc);
-    const paneHTML = node ? await renderLocalPane(node) : null;
+    const h = {
+      escape, prop, propAll, first: firstVal, idOf, types: typesOf, host: hostOf,
+      fmtDate: fmtDay, localName: localType,
+      isContainer, path: window.location.pathname, children: items || [],
+      // Fetch a child resource and return its primary node (for collection panes).
+      fetchResource: async (u) => {
+        try {
+          const r = await fetch(u, { headers: { Accept: 'application/ld+json' } });
+          if (!r.ok) return null;
+          return primaryNode(await r.json());
+        } catch (e) { return null; }
+      }
+    };
+
+    const target = document.getElementById('mashlib');
+    // Panes get first refusal for BOTH single resources and containers. A pane
+    // may return null/empty to decline (e.g. a collection pane on a folder it
+    // doesn't recognise), in which case we fall through to folder table / JSON.
+    const paneHTML = node ? await resolvePaneHTML(node, h) : null;
     if (paneHTML) {
       target.innerHTML = `<div class="db">${navHTML}<div class="db-pane-wrap">${paneHTML}</div>` +
         `<details class="db-src"><summary>Source</summary>${renderJson(doc)}</details></div>`;
+      return;
+    }
+    if (isContainer) {
+      target.innerHTML = `<div class="db">${navHTML}<div class="db-card">${renderFolder(items, here)}</div></div>`;
     } else {
       target.innerHTML = `<div class="db">${navHTML}${renderJson(doc)}</div>`;
     }
@@ -84,12 +108,15 @@ body{font:14px/1.55 system-ui,-apple-system,sans-serif;margin:0;color:#222;backg
 
   // ---- local panes: discovered from /public/panes/, augmentable per-pod ----
 
-  async function renderLocalPane(node) {
+  async function resolvePaneHTML(node, h) {
     const panes = await loadLocalPanes();
-    if (!panes.length) return null;
-    const h = { escape, prop, propAll, first: firstVal, idOf, types: typesOf, host: hostOf, fmtDate: fmtDay, localName: localType };
     for (const p of panes) {
-      try { if (p.canHandle(node, h)) return p.render(node, h); } catch (e) { /* skip */ }
+      try {
+        if (p.canHandle(node, h)) {
+          const out = await p.render(node, h);
+          if (out) return out;
+        }
+      } catch (e) { /* skip */ }
     }
     return null;
   }
diff --git a/examples/panes/bookmark-collection.js b/examples/panes/bookmark-collection.js
new file mode 100644
index 0000000..a7e95c1
--- /dev/null
+++ b/examples/panes/bookmark-collection.js
@@ -0,0 +1,96 @@
+// Pod-local collection pane for the /public/bookmark/ container.
+// Renders every bookmark:Bookmark member as a searchable feed of compact cards.
+// Loaded by the `--browser panes` data browser from /public/panes/.
+//
+// canHandle matches the conventional bookmark container path; render fetches the
+// members and returns null if none are bookmarks (so the browser falls back to
+// the folder table). Search is a self-contained inline oninput handler — no
+// script tag (which wouldn't execute via innerHTML anyway).
+
+export default {
+  canHandle(node, h) {
+    return h.isContainer && /\/bookmark\/?$/.test(h.path || '');
+  },
+
+  async render(node, h) {
+    const kids = (h.children || []).filter(it => it.type !== 'container' && it.url.endsWith('.jsonld'));
+    const fetched = await Promise.all(kids.map(k =>
+      h.fetchResource(k.url).then(n => ({ url: k.url, n })).catch(() => null)));
+
+    const items = [];
+    for (const x of fetched) {
+      if (!x || !x.n || !h.types(x.n).includes('Bookmark')) continue;
+      const recalls = h.idOf(h.prop(x.n, 'recalls'));
+      const title = h.first(h.prop(x.n, 'title')) || recalls || 'Untitled bookmark';
+      const lead = String(h.first(h.prop(x.n, 'description')) || '').split(/\n\s*\n/)[0].trim();
+      const snippet = lead.length > 190 ? lead.slice(0, 187) + '…' : lead;
+      const tags = h.propAll(x.n, 'keywords').map(t => h.first(t)).filter(Boolean);
+      const host = h.host(recalls);
+      const created = h.first(h.prop(x.n, 'created')) || '';
+      const q = [title, lead, tags.join(' '), host].join(' ').toLowerCase();
+      items.push({ recalls, podUrl: x.url, title, snippet, tags, host, created, q });
+    }
+    if (!items.length) return null; // not a bookmark collection → fall back to folder
+    items.sort((a, b) => (b.created || '').localeCompare(a.created || ''));
+
+    const card = it => {
+      const fav = it.recalls ? h.escape(new URL('/favicon.ico', it.recalls).href) : '';
+      const chips = it.tags.slice(0, 5).map(t => `<span class="bmc-tag">${h.escape(t)}</span>`).join('');
+      // Card body → the bookmark's .jsonld detail page (full summary card).
+      // Corner ↗ → the original external link.
+      return `<div class="bmc-item" data-q="${h.escape(it.q)}">
+        <a class="bmc-main" href="${h.escape(it.podUrl)}">
+          <img class="bmc-fav" src="${fav}" alt="" onerror="this.replaceWith(Object.assign(document.createElement('div'),{textContent:'🔖',style:'font-size:22px;line-height:34px;width:34px;text-align:center'}))">
+          <div class="bmc-body">
+            <div class="bmc-title">${h.escape(it.title)}</div>
+            <div class="bmc-host">${h.escape(it.host)}</div>
+            ${it.snippet ? `<div class="bmc-snippet">${h.escape(it.snippet)}</div>` : ''}
+            ${chips ? `<div class="bmc-tags">${chips}</div>` : ''}
+          </div>
+        </a>
+        <a class="bmc-ext" href="${h.escape(it.recalls)}" target="_blank" rel="noopener" title="Open original ↗" aria-label="Open original">↗</a>
+      </div>`;
+    };
+
+    const filter = "var r=this.closest('.bmc'),q=this.value.toLowerCase().trim(),n=0;" +
+      "r.querySelectorAll('.bmc-item').forEach(function(el){var m=el.getAttribute('data-q').indexOf(q)>-1;el.style.display=m?'':'none';if(m)n++;});" +
+      "r.querySelector('.bmc-count').textContent=n;" +
+      "r.querySelector('.bmc-empty').style.display=n?'none':'block';";
+
+    return `<style>
+      .bmc{max-width:720px;margin:0 auto;padding:8px 0 28px;font-family:Inter,-apple-system,system-ui,sans-serif;}
+      .bmc-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:20px;}
+      .bmc-eyebrow{font-family:Georgia,serif;font-style:italic;font-size:13px;color:#a1a1aa;}
+      .bmc-title-main{font-size:24px;font-weight:650;color:#18181b;margin-top:5px;}
+      .bmc-count{font-size:15px;color:#a1a1aa;font-weight:500;margin-left:5px;}
+      .bmc-search{border:1px solid rgba(24,24,27,.12);border-radius:10px;padding:9px 13px;font-size:14px;outline:none;width:210px;max-width:45vw;background:#fff;font-family:inherit;transition:border-color .15s,box-shadow .15s;}
+      .bmc-search:focus{border-color:#7c3aed;box-shadow:0 0 0 3px rgba(124,58,237,.12);}
+      .bmc-list{display:flex;flex-direction:column;gap:12px;}
+      .bmc-item{position:relative;background:#fff;border:1px solid rgba(24,24,27,.07);border-radius:14px;box-shadow:0 1px 2px rgba(24,24,27,.04);transition:box-shadow .15s,border-color .15s;}
+      .bmc-item:hover{box-shadow:0 4px 18px rgba(24,24,27,.09);border-color:rgba(124,58,237,.25);}
+      .bmc-main{display:flex;gap:14px;align-items:flex-start;text-decoration:none;color:inherit;padding:18px 52px 18px 20px;}
+      .bmc-main:active{transform:translateY(1px);}
+      .bmc-ext{position:absolute;top:13px;right:13px;width:30px;height:30px;display:flex;align-items:center;justify-content:center;border-radius:8px;color:#b4b4bb;text-decoration:none;font-size:16px;line-height:1;transition:background .15s,color .15s;}
+      .bmc-ext:hover{background:rgba(124,58,237,.1);color:#7c3aed;}
+      .bmc-fav{width:34px;height:34px;border-radius:8px;flex:0 0 auto;background:rgba(127,127,127,.06);object-fit:contain;margin-top:2px;}
+      .bmc-body{min-width:0;flex:1;}
+      .bmc-title{font-size:16px;font-weight:600;color:#18181b;line-height:1.35;overflow-wrap:anywhere;}
+      .bmc-host{font-size:12px;color:#7c3aed;font-family:ui-monospace,SFMono-Regular,monospace;margin-top:4px;}
+      .bmc-snippet{font-size:13.5px;line-height:1.6;color:#52525b;margin-top:9px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
+      .bmc-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:11px;}
+      .bmc-tag{font-size:11px;color:#6d28d9;background:rgba(124,58,237,.07);border:1px solid rgba(124,58,237,.12);padding:2px 9px;border-radius:999px;}
+      .bmc-empty{text-align:center;color:#a1a1aa;padding:28px;font-size:14px;}
+    </style>
+    <div class="bmc">
+      <div class="bmc-head">
+        <div>
+          <div class="bmc-eyebrow">Collection</div>
+          <div class="bmc-title-main">Bookmarks <span class="bmc-count">${items.length}</span></div>
+        </div>
+        <input class="bmc-search" type="search" placeholder="Search title, summary, tags…" oninput="${filter}">
+      </div>
+      <div class="bmc-list">${items.map(card).join('')}</div>
+      <div class="bmc-empty" style="display:none">No matches.</div>
+    </div>`;
+  }
+};