v0.8.1 — Change clerk and field probe fixes

What's new

Fixes only. Nothing new on screen.

• Change clerk now closes if another desk closes the session while the dialog is open. Before, saving it renamed the closed session's clerk in the status bar and the session lists. Records, the PDF and the downloads were never affected.
• Opening sessions is more robust: two opens that overlap can no longer leave a session marked "already open in another tab".
• Field probe (probe.html): pressing Start over while it says "Preparing the code..." no longer turns into a false FAIL, and a failed camera re-test no longer leaves the old scanner on screen.
• Behind the scenes: simpler code for the PDF and downloads (the files are unchanged) and for building the release zip.

Install

Updating a PC that already has the shortcuts: extract the new zip and run the setup script for that system. Sessions, the printer and the workstation name are kept. New desk PC: follow Setting up a desk PC in README.txt (in the zip). offline-checkout.html is also attached on its own for PCs set up by hand: copy it over the old file.

Sessions are kept: there is no IndexedDB schema change. The pairing format is still OC2, and 0.8.1 works with 0.8.0 desks, but update every desk together when you can. Don't update during an outage.

SHA-256:

• offline-checkout.html: f237c0f6776e7fe1874bf1502ec2832733c6be2b3b48cbe2b35daadb2c17ff8b
• offline-checkout-v0.8.1.zip: 812a26582db885cb085a21298a715e67827659e8f2647c175b07be7d8b7da71a

Before rollout

This is a pre-release. The checks listed for 0.7.0 and 0.8.0 still apply.