Ref #03. Refactoring.

docs/03-system-architecture.md

@@ -60,9 +60,6 @@ What if the network disappears? In this example, once the required files and ver
 
 If the update itself is interrupted, the device needs enough saved information to work out what happened before continuing. We will look at storage, boot behavior, and recovery in later chapters.
 
-Two ADRs explain the choices behind this example:
-
-- [ADR-011: Device-Initiated Update Checks](../adr/ADR-011-device-initiated-update-checks.md) — how does a device find updates when its connection and settings allow it?
-- [ADR-012: Device-Controlled Update Execution](../adr/ADR-012-device-controlled-update-execution.md) — why let the device finish the update when the server is unreachable?
+[ADR-011: Device-Initiated Update Checks](../adr/ADR-011-device-initiated-update-checks.md) explains how a device checks for updates at power-on, on a schedule, or at the operator’s request.
 
 Next, we will follow the boot process and see what happens before Linux and the OTA manager start.