See everything that is provisioning, and open the steps behind it #31

What to build

A view lists every managed database that is provisioning for the first time: its name, its engine, the step the platform is on right now, its state, and how long the run has taken. Opening a row shows that instance's receipt: one line per step, each one either confirmed by something the platform emitted or honestly marked as not heard.

A restart or a resize never appears here: those emit none of the signals a receipt is built from, so a receipt for one would confirm nothing forever.

Acceptance criteria

• The view lists the instances that are provisioning for the first time, and nothing else.
• Each row names the step the run is on right now, in the platform's own vocabulary.
• Opening a row shows its receipt: the ordered steps, the state of each, and the stamp of the signal that confirmed it.
• An instance that is restarting, resizing or reconfiguring is absent from the list.
• A run that failed shows the step it died on and the reason, on the receipt.
• The demo account contains one instance mid-provision, so all of this is visible without spending money.

Blocked by

• Receipts measure against one clock the caller passes in #29