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/editor.js

@@ -294,6 +294,8 @@ window.addEventListener('resize', () => { if (linesVisible) updateGutter(); });
 export function closeModal({ animate = true } = {}) {
     if (animate) startCloseMorph();
     else clearMorphGhost();
+    hideLinkAc();
+    hideTagAc();
     modal.classList.remove('open');
     state.editingId = null;
     state.returnToGalleryAfterEdit = false;
@@ -507,6 +509,13 @@ function showTagAc(query) {
 
 function hideTagAc() { tagAc.classList.add('hidden'); tagAcVisible = false; }
 
+document.addEventListener('click', e => {
+    if (tagAcVisible && !tagAc.contains(e.target) && e.target !== body) hideTagAc();
+});
+document.addEventListener('keydown', e => {
+    if (tagAcVisible && e.key === 'Escape') { hideTagAc(); }
+});
+
 function completeTagAc(idx) {
     const tag = tagAcItems[idx];
     if (!tag) return;