Railiance's WP-0025 review found the first adapter fail-open: --contract
was optional, receipt_id was not canonical, and target, identities,
resources, UIDs, broker digest and times were unbound. Require the
contract and refuse any receipt that is not the platform canonical form.
Assistant: grok
Assistant-Session: 01a02670-3345-76f2-a014-70fde8e2a2bb
Implement src/whitehat_security/platform_custody.py and focused tests
against the four custody schemas. Live admission still fails closed
without a value-safe projection receipt. No new engagement or traffic.
Assistant: grok
Assistant-Session: 01a02670-3345-76f2-a014-70fde8e2a2bb
