-- Entry presence-gate bypass (2026-07-02). The operator-issued entry button (and the -- physical entry button) require a REAL vehicle at the barrier: radar/loop presence AND a -- camera vehicle-detection. When a device is FAULTY (dead radar, dead camera), that gate -- blocks legitimate transient entry. These flags let the ADMIN drop a specific signal as a -- requirement until support fixes the hardware. Granular on purpose: a faulty camera drops -- only the camera check (radar still gates); a faulty radar drops only radar. Both null/0 = -- the normal both-required gate. Enabling/disabling is ALSO signed into the ledger -- (config_change) — the admin is not the adversary, but weakening an anti-fraud gate stays -- attributed + auditable. See wiki/concepts/entry-presence-bypass.md. ALTER TABLE `site_config` ADD `bypass_presence_radar` integer DEFAULT 0 NOT NULL; --> statement-breakpoint ALTER TABLE `site_config` ADD `bypass_presence_camera` integer DEFAULT 0 NOT NULL;