fix: suppress shortcuts when typing in input fields

Shortcut dispatcher now skips non-modifier keys when focus is in an
editable field. Editor find bar ESC stops propagation to close bar
before modal.

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

public/js/modules/editor.js

@@ -1080,11 +1080,11 @@ function replaceAll() {
 findInput?.addEventListener('input', runFind);
 findInput?.addEventListener('keydown', e => {
     if (e.key === 'Enter') { e.preventDefault(); e.shiftKey ? findPrev() : findNext(); }
-    if (e.key === 'Escape') { e.preventDefault(); closeFindBar(); }
+    if (e.key === 'Escape') { e.preventDefault(); e.stopPropagation(); closeFindBar(); }
 });
 replInput?.addEventListener('keydown', e => {
     if (e.key === 'Enter') { e.preventDefault(); replaceOne(); }
-    if (e.key === 'Escape') { e.preventDefault(); closeFindBar(); }
+    if (e.key === 'Escape') { e.preventDefault(); e.stopPropagation(); closeFindBar(); }
 });
 $('find-next')?.addEventListener('click', findNext);
 $('find-prev')?.addEventListener('click', findPrev);