fix reorder in virtual buckets, split view tags, editor/preview cleanup

- Fix card drag reorder in favorites/journal/current (filter logic
  now mirrors renderBoard)
- Split view shows tag-matched cards as own group alongside related
- Remove extract/tree-view buttons from detail preview (edit-only)
- Context menu tag input: Enter assigns tag directly
- Tag autocomplete closes on ESC/click-outside globally
- Close modal cleans up both autocomplete popups

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

public/js/modules/context-menu.js

@@ -122,6 +122,25 @@ export function showContextMenu(x, y, card) {
     renderCtxTags();
     tagInput.value = '';
     tagInput.addEventListener('input', () => renderCtxTags(tagInput.value));
+    tagInput.addEventListener('keydown', async e => {
+        if (e.key !== 'Enter') return;
+        e.preventDefault();
+        const raw = tagInput.value.replace(/^#/, '').trim().toLowerCase();
+        if (!raw) return;
+        const tag = raw;
+        if (!cardTags.includes(tag)) {
+            const newBody = (card.body || '').trimEnd() + ' #' + tag;
+            card.body = newBody;
+            cardTags.push(tag);
+            if (!allTags.includes(tag)) { allTags.push(tag); allTags.sort(); }
+            await api(`api/cards/${card.id}`, { method: 'PATCH', body: { body: newBody } });
+            const c = state.cards.find(x => x.id == card.id);
+            if (c) { c.body = newBody; c.tags = cardTags.join(','); }
+            window._renderBoard();
+        }
+        tagInput.value = '';
+        renderCtxTags('');
+    });
     tags.classList.add('hidden');
 
     menu.style.left = Math.min(x, innerWidth - 188) + 'px';