v0.64.0

The demo now shows every page with real data: approval policies, accounts, and configuration drift are seeded and wired, so the Policies, Users, and Drift pages are no longer empty or unavailable. The read-only banner and the welcome tour read cleanly and name all five tools. Yardmaster is presented on its own terms, with the AWX framing kept to the migration and comparison pages. The credential kinds in the secrets guide are now a table.