v0.80.0: Another source, found for you

A series its sources cannot get its chapters from finds another source on its own. When every site a series
follows is rate-limiting, blocking or failing it, the server now looks for the series on your other installed sources
in the background, follows one that has the missing chapters, and carries on from there. It works the same whether
the series came from Discover, Find missing chapters or the scheduled checks.

Another source, found for you

• The scout. Every few minutes it takes one stuck series and looks for it on the other installed sources:
  • which series: any whose sources are all cooling, silent or refusing it; an add or Fetch a site refused; or chapters
    left after their tries;
  • which sources: only ones in the series' language, and no 18+ source for a series that isn't 18+;
  • what it follows: a source that passes the same title and chapter-number check as any second source, and that lists
    a chapter the series is waiting for.
    The series keeps its main source; the new one fills in. Chapters that had used up their tries get them back, and the
    series goes first in the next Finish downloads on their own run.
• It looks in the right places first. Sources it has already found the series on come first. Next are sources
  that downloaded well on your server this week, then the rest. Within each group, sites with fewer chapters already
  waiting on them come before busy ones. It never asks a site that shares an image server with one the series already
  follows: Mangakakalot can't stand in for Natomanga, because they slow down together.
• It remembers. A source that said "not this series" isn't asked again for two weeks, and one that didn't answer
  for a day. The sweep's own search for a failed chapter shares that memory, and so does Find other sources.
  • A source you unfollow from a series is never followed there again on its own. Following it yourself undoes that.
• Gentle by design.
  • One series at a time, at most twelve sources and sixteen searches each.
  • Forty searches an hour in all (SCOUT_SEARCHES_PER_HOUR).
  • A series it just looked at waits: six hours after a follow, up to three days after every source said no.
• Room for it. A series may now follow three other sources (two before). For the server's own follows, a broken,
  switched-off or uninstalled follower doesn't count toward that limit, and it is kept.

Changed

• The switch Look for failed chapters on other sources is now Use other sources on their own, in Admin →
  Settings → Updates & schedules. It turns the scout and the sweep's own search on or off together, and it is still on
  unless you turned it off.

Upgrading

• Database: two new tables, series_scout and scout_verdicts. Additive: v0.79.x ignores them.
• Settings: MAX_FOLLOWED_SOURCES now defaults to 3. To keep two, set it to 2. The new SCOUT_SEARCHES_PER_HOUR
  (default 40) can be set to 0 to turn the scout off on its own. See docs/CONFIGURATION.md.

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-0.80.0.exe
Mac with Apple silicon (M1 or newer)	Uchiyomi-0.80.0-arm64.dmg
Mac with an Intel processor	Uchiyomi-0.80.0-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.