Every 5 minutes, find active unlock events past 8-hour ceiling and
mark them force-locked. SQL bypass of the model's read-only ACL is
the only path that can update existing rows (no Python write() works
because the model override blocks even sudo writes without the
explicit fp_tablet_audit_admin_write context flag).
Ceiling configurable via ir.config_parameter[fp.tablet.session_ceiling_hours].
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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