A notification is not a delivery path: Android 14 restricts full-screen intents to apps it classifies as alarm apps, and setAlarmClock is both the strongest alarm API and the evidence for that classification. Schedule the takeover through AlarmManager instead of startActivity, keep a standing alarm-clock entry while armed, restore it after reboot (the wake also re-arms the socket), and persist the honest listening state so a platform stop is visible. Run the socket as specialUse on API 34+ (dataSync is capped at 6h/24h on 35+) and keep onTimeout as a guard. Restore the Lead release build placeholder so a plain-HTTP instance is reachable, and allow the app to arm only when exact alarms and full-screen intent are actually granted.
The server ledger is cleared by an explicit ack, never by the check-in response, so a dismissal that cannot reach the service must be persisted and retried or the device rings again later. Add a durable pending-ack queue (404 means the alert ended: settled, drop it), map the 409 ERR_ALARM_TRIGGERED_OFFLINE check-in into a normal trigger for the same takeover, and make a 404 an ending rather than a missed alarm. This also carries the expiry/endings state the screens render.
Apps reach every service through Maestro on one port; direct service addressing is no longer a supported deployment, and Maestro has no per-service hostname or host-port route. Replace the maestro/direct modes and the serviceRef lookup with one configured origin and the fixed paths /api/alarm/{action,auth,ws}, defaulting dev builds to 127.0.0.1:8080 through adb reverse. The old mode-specific body wrapping and the direct-mode socket branch go with it.
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