v5.2.0

Added

• extension_manifest_validate warns when a Chrome-desktop-only manifest
  key (for example file_browser_handlers) rides an Edge target, where it
  is inert. Family-level prefix resolution already worked; this adds
  granularity inside the chromium family for Edge-targeted publishers.
• extension_logout now returns revokeUrl pointing at the project's
  access-tokens page and says plainly that the token stays valid
  server-side until revoked there. The scope is read before the local
  credentials are cleared so the link can still be built.