fix(ui): tag counts, j/k nav, stream layout, search alignment

- Tag rail counts now reflect cards-only when in cards view
  (ListTags accepts cardsOnly filter, JS passes it per view)
- j/k navigation scoped to visible (intent/search filtered) list
- scrollSelectedIntoView works in both stream and cards view
- Entity items wrap title/desc/preview in .entity-content flex
  container so tags/pills align right consistently
- Title no longer eaten by description/body (flex-shrink + min-width)
- Search bar centered in header with margin auto
- switchView awaits loadEntities+loadTags to fix stale intent counts

web/app.js

@@ -110,8 +110,10 @@
       });
       return resp.json();
     },
-    async listTags() {
-      const resp = await fetch('/api/tags');
+    async listTags(params = {}) {
+      const q = new URLSearchParams();
+      if (params.cards_only) q.set('cards_only', 'true');
+      const resp = await fetch('/api/tags?' + q);
       return resp.json();
     },
   };
@@ -653,9 +655,9 @@
     const descSnip = e.description ? `<span class="entity-desc">${escHtml(e.description)}</span>` : '';
     if (e.title) {
       const preview = e.body ? `<span class="entity-preview">${escHtml(e.body)}</span>` : '';
-      label = `<span class="entity-title">${escHtml(e.title)}</span>${descSnip}${preview}`;
+      label = `<span class="entity-content"><span class="entity-title">${escHtml(e.title)}</span>${descSnip}${preview}</span>`;
     } else {
-      label = `<span class="entity-body">${escHtml(e.body)}</span>${descSnip}`;
+      label = `<span class="entity-content"><span class="entity-body">${escHtml(e.body)}</span>${descSnip}</span>`;
     }
 
     return `<div class="entity-item${selected}${isCard}" data-index="${idx}" data-id="${e.id}">
@@ -1124,6 +1126,7 @@
     state.selectedIndex = -1;
     renderEntityList();
     renderDetailPane();
+    renderTagRail();
   }
 
   async function loadMore() {
@@ -1168,7 +1171,9 @@
   }
 
   async function loadTags() {
-    state.tags = await api.listTags();
+    const params = {};
+    if (state.view === 'cards') params.cards_only = true;
+    state.tags = await api.listTags(params);
     renderTagRail();
   }
 
@@ -1178,10 +1183,10 @@
     state.selectedIndex = -1;
     $$('.nav-btn').forEach(b => b.classList.toggle('active', b.dataset.view === view));
     window.location.hash = view === 'cards' ? '/cards' : '/';
-    loadEntities();
     renderMonthNav();
-    renderTagRail();
     renderCaptureBar();
+    loadEntities();
+    loadTags();
   }
 
   // ========== Toast ==========
@@ -1430,16 +1435,30 @@
     const sel = state.entities[state.selectedIndex];
 
     switch (ev.key) {
-      case 'j':
+      case 'j': {
         ev.preventDefault();
-        selectEntity(Math.min(state.selectedIndex + 1, state.entities.length - 1));
+        const visible = filterBySearch(state.entities);
+        const sel = state.entities[state.selectedIndex];
+        const curPos = sel ? visible.indexOf(sel) : -1;
+        const nextPos = Math.min(curPos + 1, visible.length - 1);
+        if (visible.length > 0 && nextPos >= 0) {
+          selectEntity(state.entities.indexOf(visible[nextPos]));
+        }
         scrollSelectedIntoView();
         break;
-      case 'k':
+      }
+      case 'k': {
         ev.preventDefault();
-        selectEntity(Math.max(state.selectedIndex - 1, 0));
+        const visible = filterBySearch(state.entities);
+        const sel = state.entities[state.selectedIndex];
+        const curPos = sel ? visible.indexOf(sel) : -1;
+        const prevPos = Math.max(curPos - 1, 0);
+        if (visible.length > 0) {
+          selectEntity(state.entities.indexOf(visible[prevPos]));
+        }
         scrollSelectedIntoView();
         break;
+      }
       case 'n':
         ev.preventDefault();
         $('#capture-input').focus();
@@ -1485,7 +1504,7 @@
   });
 
   function scrollSelectedIntoView() {
-    const el = $(`.entity-item[data-index="${state.selectedIndex}"]`);
+    const el = $(`.entity-item[data-index="${state.selectedIndex}"], .card-row[data-index="${state.selectedIndex}"]`);
     if (el) el.scrollIntoView({ block: 'nearest' });
   }