googlesamples/android-testdpc ? reverse-engineered prompt

Build me an Android app called Test DPC that helps me set up and test a managed work profile or fully managed device. I want it to act like a sample device policy controller, so I can enroll a device, provision a work profile, and then see and control the kinds of enterprise settings an admin app can manage.

The app should have a simple setup flow for provisioning, including QR code based setup and the usual test account style onboarding. Once it’s set up, I want screens for things like enabling work apps, applying app restrictions, managing security policies, and checking how apps behave in a managed context. Make it feel like a real reference app for Android Enterprise testing, not just a demo.

Please keep it compatible with modern Android and build it in a way that can be used as a sample for other DPCs too. If you need to check current Android docs for any enterprise setup details, do that.