- Explorer: context menus, multi-select, inline rename/new, drag to move or copy, desktop drag-and-drop uploads (folders too), cut/copy/paste, duplicate, download, delete to a 7-day trash with Undo. Server side in libexec/devdesk-fsops.sh with bats tests. Closes #54 - Markdown preview in a shadow root: headings with anchors and outline, highlighted code with copy, callouts, task lists, front matter, links that open files, live split view. Editor status bar, multi-cursor, closeBrackets, Ctrl+G, tab menus and reordering. Closes #55 - Search in files (Ctrl+Shift+F) via git grep / grep. Closes #56 - Fix: nested $(...) path checks now fail hard (set -e does not reach them; an escape created /x in testing); newest folder listing wins; sessionAction returns the reply JSON. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01WHRLCCdXYm41Qx5kNhehaP