Every board wadamesh ships is in this table. A tick comes from somebody running that build on that board and saying so from the device itself, so the next stable release is promoted on evidence rather than on nobody having complained.
Every test build since the current stable is listed separately. A report vouches for the build it was sent from and for nothing cut after it, so these never merge.
On the device: Settings, About, "Send a test report". Tick what you actually exercised, say how long you have been running it, and send. It takes one tap and needs Wi-Fi on the device. Nothing identifying is sent, and the device lists exactly what it will send before it sends it.
Same page, "Report a bug". The device draws a QR code that opens a GitHub issue form with your board, firmware version and diagnostics already filled in. You scan it with your phone and type what went wrong, and the issue is filed under your own GitHub account.
Green needs two separate devices whose owners ran the build for a day or more. One report, or a report from somebody who only watched it boot, is recorded and is not enough to promote on.
Silence is read two different ways, and the difference is the whole point. A board nobody has ever reported on is treated as a board nobody here owns: it cannot go green and it does not hold a release up. A board somebody has reported on before, on any build, is one we know is out there, so silence on it now means untested and it does hold the release up until somebody vouches for this build.