v0.93.0: A disk that isn't there

A library or download disk that isn't connected is no longer taken for one that lost its chapters. This is
globalteddy's work (#323). Thank you.

A disk that isn't there

• When a network share or a removable drive isn't mounted, the folder Uchiyomi sees is an empty mount point, or one
  holding only what a download wrote there meanwhile. The nightly page count, the fingerprint and page-hash passes,
  Verify chapter files and the read-chapter cleanup used to write what they saw back for good: chapters stamped as
  broken or unreadable, marked missing and downloaded again over files that were fine, or marked deleted and never
  fetched back.
• Now each of them first checks that the folder holds the chapters it is supposed to. If none of them, or fewer than
  one in ten, are there, the job leaves everything as it is and tries again once the disk is back. The read-chapter
  cleanup says so on its Tasks line ("stopped: 26 of 27 chapter files in the download folder are missing; is the
  download volume mounted?"). A chapter a job may not read (a folder whose permissions slipped) is left for later too, never
  marked.
• The check is cheap on a disk that is there: a few dozen files looked at, not every chapter, so a NAS is not woken
  for it. And a disconnected library no longer holds up the nightly page count for the download folder.

Upgrading

• Nothing to do.

Uchiyomi Desktop (beta): downloads

Uchiyomi as a program on your own computer, for Windows and Mac. On first launch it asks how you want to
use it: on this computer (the whole app, with the library in a folder on your PC and no Docker or
server to run) or connected to your own Uchiyomi server (a window onto the server you already run).

Your computer	Download
Windows (x64)	Uchiyomi-Setup-0.93.0.exe
Mac with Apple silicon (M1 or newer)	Uchiyomi-0.93.0-arm64.dmg
Mac with an Intel processor	Uchiyomi-0.93.0-x64.dmg

Only those three are for you: the .zip, .blockmap and latest*.yml files are what the app's own updater
reads. The same installers are also here under names without a version (Uchiyomi-Setup.exe,
Uchiyomi-mac-arm64.dmg, Uchiyomi-mac-x64.dmg), which always lead to the newest release.

The app is not signed yet, so the first launch takes one extra step:

• Windows: "Windows protected your PC" appears once. Choose More info, then Run anyway. A PC
  with Smart App Control turned on blocks unsigned apps with no way past it; use the Docker install there.
• macOS: open the dmg and drag Uchiyomi to Applications. The first time you open it, macOS refuses;
  go to System Settings → Privacy & Security and choose Open Anyway.

Windows installs updates by itself. A Mac cannot update an unsigned app, so there a new version is a new
download; the menu-bar icon and Admin → Health say when one is out.

Step by step, with pictures -- which file, the first launch on each system, the two ways to use it, adding
sources, updates, backups, where files live and uninstalling:
the desktop guide.