Hovering the remark gave no affordance hint that it copies anything. The
reference theme titles the same button 点击复制{copy name} and omits the
tooltip entirely when no copy name is configured.
Emit data-toggle="tooltip" with that title on both copy buttons, gated on a
non-empty copy name, and mirror it on the paid-card helper so the two
surfaces agree. Bootstrap's tooltip init already runs in auto_fun() on load,
which is where the clipboard lib is required too.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>