Staff companion app (developers)

See the repository files docs/STAFF_APP.md and docs/STAFF_APP_RELEASE.md for the threat model, API contract, device matrix, and store gates.

In this repo

• API: /api/mobile/v1
• Schema: mobile_* tables
• App: apps/mobile
• Push drain: GET /api/cron/mobile-push (cron secret) and worker job mobile.push
• Tenant flag: staff_app

Enabling staff_app in Operator is the review step that adds the staff-app channel to canonical assignee rules.