[KayzenRoot]

Follow-up compatibility fix for the Forge systems-runtime coverage.

Problem:
an existing UADS installation may retain a valid persisted pre-update specialist registry, so updating the package alone can still leave the new systems-runtime profile and expanded built-in coverage unavailable.

Fix:

• reconcile persisted built-in profiles against the current canonical built-in catalog on load;
• preserve all non-builtin user-config/adapter profiles;
• fail closed on any non-builtin collision with a reserved built-in ID;
• atomically persist the reconciled registry/state only when the canonical built-ins changed;
• add a regression test simulating an old 25-profile registry plus a custom user profile.

No ~/.uads wipe is required and user-defined profiles are preserved.