The html-embed feature toggle was enforced CLIENT-side in the NodeView (reads
settings.htmlEmbed from the logged-in workspace), so an anonymous public-share
viewer — who has no workspace context — always saw it as OFF and got a
placeholder instead of the executing embed. That broke the whole point (a
tracker must run for anonymous visitors).
Make it server-authoritative:
- share.service prepareContentForShare (the single path both share-content
flows use) strips htmlEmbed from served content when the workspace toggle is
OFF; both callers (updatePublicAttachments host page + lookupTransclusionForShare)
resolve the toggle once and pass it. Fail-closed: missing workspace -> OFF ->
stripped.
- NodeView executes whatever it was served in read-only/share mode
(shouldExecute = !editor.isEditable || htmlEmbedEnabled); the disabled
placeholder now only shows in the editable editor when OFF.
Net: anonymous share + toggle ON -> server serves the (admin-authored) embed ->
it executes for everyone; toggle OFF -> stripped server-side from every
share-content path (true kill switch); a non-admin embed can never be served
(save-path strip). No XSS regression in the editable editor.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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