Binary blocking now applies two layers:
1. PATH-priority wrapper in /usr/local/bin/ (existing)
2. Empty AppArmor profile in /etc/apparmor.d/ loaded in enforce mode
An empty AppArmor profile denies all access — the blocked binary cannot
load shared libraries and exits immediately with a permission error,
covering callers that use absolute paths and bypassed the wrapper.
AppArmor layer is skipped silently when apparmor_parser is not present,
and deferred with a warning if the real binary is not yet installed.
Profiles are unloaded and deleted when the host leaves the policy group.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>