When multiple sx expressions are concatenated and passed as a kwarg
value via SxExpr(), the parser only sees the first as the value — the
rest become extra args silently dropped by the component. Wrap in (<>)
fragments in render_editor_panel() and _page_cards_sx().
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Rename all sexp directories, files, identifiers, and references to sx.
artdag/ excluded (separate media processing DSL).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>