fix(home): restore tbody binding, sticky mobile delete bar, 20-row recent-first list

- Fix Uncaught ReferenceError: tbody is not defined — the client-side filter
  rewrite dropped the const tbody declaration still used by load-more
- Mobile: Delete Selected becomes a sticky frosted bottom bar (safe-area
  aware); disabled (grayed) until a row is selected, then red
- Mobile: library search input full-width 48px (primary interaction)
- Default list: 20 rows (was 50) sorted by updated_at desc (recent first)
  instead of click_count; load-more keeps paging +20

links/templates/links/link_list.html

@@ -208,6 +208,10 @@
   .apple-btn-primary:hover { background: var(--apple-blue-hover); color: #fff; }
   .apple-btn-danger { background: transparent; color: var(--apple-red); border: 1px solid rgba(255, 59, 48, 0.4); }
   .apple-btn-danger:hover { background: rgba(255, 59, 48, 0.08); }
+  .apple-btn-danger:disabled {
+    opacity: 0.45; color: var(--apple-gray); border-color: rgba(0, 0, 0, 0.12);
+    cursor: default; pointer-events: none; background: transparent;
+  }
 
   /* ---------- Link library (table) ---------- */
   .library-header {
@@ -579,7 +583,19 @@
   /* ---------- Small screens ---------- */
   @media (max-width: 640px) {
     .library-header { padding: 1.35rem 1.1rem 1rem; }
-    .library-footer { padding: 1rem 1.1rem 1.25rem; }
+    .library-footer {
+      position: sticky; bottom: 0; z-index: 5;
+      background: rgba(245, 245, 247, 0.88);
+      -webkit-backdrop-filter: blur(20px) saturate(180%);
+      backdrop-filter: blur(20px) saturate(180%);
+      border-top: 1px solid rgba(0, 0, 0, 0.05);
+      border-radius: 0 0 var(--apple-radius-lg) var(--apple-radius-lg);
+      margin: 0 -1.1rem -1.25rem;
+      padding: 0.7rem 1.1rem calc(0.7rem + env(safe-area-inset-bottom, 0px));
+    }
+    /* Search takes the full row on mobile (it is the primary interaction) */
+    .library-filter { flex: 1 1 100%; }
+    .library-filter input { width: 100%; height: 48px; font-size: 1rem; }
     .apple-table thead th, .apple-table tbody td { padding-left: 0.8rem; padding-right: 0.8rem; }
     .hero-stats { gap: 1.25rem; }
     .posts-panel-header { padding: 1.15rem 1.1rem 0.6rem; }
@@ -965,7 +981,7 @@
       {% endif %}
       <div class="library-footer">
         <p class="selection-hint" id="selection-hint" aria-live="polite"></p>
-        <button type="submit" class="apple-btn apple-btn-danger">{% trans "Delete Selected" %}</button>
+        <button type="submit" id="delete-selected-btn" class="apple-btn apple-btn-danger" disabled>{% trans "Delete Selected" %}</button>
       </div>
     </form>
   </section>
@@ -1406,6 +1422,7 @@
 
     /* ---------- Load more links ---------- */
     const loadMoreBtn = document.getElementById('load-more-links');
+    const tbody = document.getElementById('links-table-body');
     if (loadMoreBtn && tbody) {
       loadMoreBtn.addEventListener('click', function () {
         const offset = loadMoreBtn.dataset.offset;
@@ -1444,6 +1461,8 @@
       if (!selectionHint) return;
       const count = document.querySelectorAll('input[name="selected_links"]:checked').length;
       selectionHint.textContent = count > 0 ? count + ' {% trans "selected" %}' : '';
+      const delBtn = document.getElementById('delete-selected-btn');
+      if (delBtn) delBtn.disabled = count === 0;
     }
 
     if (selectAll) {

links/views.py

@@ -47,7 +47,7 @@ from .search_views import search_aliases, search
 logger = logging.getLogger(__name__)
 
 # Number of link rows rendered on the initial home page load / per "Load more" click.
-LINKS_PAGE_SIZE = 50
+LINKS_PAGE_SIZE = 20
 
 
 def _ordering_for(sort_by, order):
@@ -74,14 +74,14 @@ class LinkListView(ListView):
 
     def get_queryset(self):
         queryset = super().get_queryset()
-        sort_by = self.request.GET.get('sort', 'click_count')
+        sort_by = self.request.GET.get('sort', 'updated_at')
-        order = self.request.GET.get('order', 'asc')
+        order = self.request.GET.get('order', 'desc')
         return queryset.order_by(_ordering_for(sort_by, order))
 
     def get_context_data(self, **kwargs):
         context = super().get_context_data(**kwargs)
-        context['current_sort'] = self.request.GET.get('sort', 'click_count')
+        context['current_sort'] = self.request.GET.get('sort', 'updated_at')
-        context['current_order'] = self.request.GET.get('order', 'asc')
+        context['current_order'] = self.request.GET.get('order', 'desc')
 
         # Modern color palette
         colors = [
@@ -128,8 +128,8 @@ def load_more_links(request):
     """Return the next page of link rows (rendered as <tr> HTML) for the
     home page's "Load more" button, so the initial page load doesn't have
     to render the entire link table at once."""
-    sort_by = request.GET.get('sort', 'click_count')
+    sort_by = request.GET.get('sort', 'updated_at')
-    order = request.GET.get('order', 'asc')
+    order = request.GET.get('order', 'desc')
     try:
         offset = max(int(request.GET.get('offset', 0)), 0)
     except (TypeError, ValueError):