cms is now the authoring source for the bn chrome (head/toolbar/engagement);
this repo carries a mechanically-synced copy solely for guest-side plugin
templates (cms `make sync-templates`, drift gated by check-safety check 31).
head.templ picks up everything it had drifted behind on (RFG-parity favicon
head, analytics/web-vitals beacons, custom-scripts placement, bnApplyTheme)
and is now SDK-clean: asset versioning goes through the new
bn.VersionedAssetURL hook (identity default; the CMS host wires it to its
internal assets registry). HeadData is shape-compatible with existing plugin
usage; BrandingData/SiteSettingsData internals changed — plugins see that at
compile time on their next core bump.
Spec: cms docs/superpowers/specs/2026-07-07-bn-chrome-single-source-design.md
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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