- AssetsPanel: asset delete now requires an in-app two-step confirm
(tile-button turns into "Delete?" + cancel, auto-resets after 4s or on
click-elsewhere) instead of deleting with no confirmation at all.
- AssetsPanel: copyUrl uses a new copyToClipboard() helper that tries the
async Clipboard API and falls back to a hidden-textarea execCommand copy
in non-secure contexts, surfacing a visible "Copy failed" state instead
of silently doing nothing.
- SitesmithModal: replaced window.confirm(...) for "Clear chat" with the
same in-app two-step confirm pattern -- no native dialogs.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
