Move PostHog init out of the React tree so the client tree matches
the server render (mismatched useIds could abort hydration, leaving
dead event handlers). Also expose the CSP nonce so Radix scroll-lock
styles aren't blocked.
Platform-plan organisations and teams can now customise non-embed
signing pages with six brand colour tokens, a border-radius, and
a free-text custom CSS block (up to 256 KB).
- Stored on OrganisationGlobalSettings / TeamGlobalSettings;
teams inherit from the org via brandingEnabled === null.
- CSS is sanitised on save (PostCSS) so we can inline it at SSR
with no per-render parsing.
- Rendered via a nonce'd <style> scoped under .documenso-branded,
using native CSS nesting so user selectors don't need scoping.
- Gated on the existing embedSigningWhiteLabel claim (or
self-hosted) — reuses the embed white-label decision.