The lost-frame recovery page is answered ahead of the credential checks in both
auth hooks, which makes it the third unauthenticated 200 beside the two hook
routes, and the only one decided by request headers alone. CLAUDE.md's security
table listed exactly two, and docs/web-tabs.md is not where anyone auditing that
looks, so it now has a row in the table and a fourth property in
docs/security-architecture.md section 10b, including the `/` carve-out and its
credential-free condition. Both state the property that comes with it: a
non-browser client can set those headers, so an unauthenticated caller can tell a
registered route (401) from a non-route (200) and enumerate the route table,
accepted because the routes are public in docs/api-reference.md.
docs/web-tabs.md gains the landing-page case in layer 6 and a Known limits entry:
masking trades away the Referer safety net, only HTML is rewritten server-side,
and a root-absolute url() inside an inline <style> block has the masked document
as its Referer, so it 404s where the Referer fallback used to rescue it. External
stylesheets are unaffected.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Codeman maintainer
6dc27ae727