v0.25.0: The pages that are not the story

The pages that are not the story

Every chapter of a scanlated series opens with the same credit page. Some carry an advert, or a "read the
rest at…" splash. You swipe past them, chapter after chapter, and they are the single most repetitive thing
about reading here. No manga reader does anything about this — the closest thing in any adjacent product is
Jellyfin skipping a TV intro.

Uchiyomi now finds them and skips them, and the way it decides is deliberately dull. A credit page is the
same image in every chapter of that series, so a page whose fingerprint turns up in three or more chapters
is furniture. That is arithmetic, not a guess about what a page looks like: story pages are not the same
picture twice. Three chapters and not two, because two chapters sharing a title card is a coincidence, and
two is the commonest state of a part-downloaded series.

It only ever compares chapters within one series, even though the same group's credit page across different
series would be stronger evidence still. Flagging across series means a page could be hidden in a book whose
chapters nobody ever compared, and missing a few skips is a far better failure than that.

Nothing is ever hidden without saying so. A skipped page leaves a quiet chip — skipped 1 repeated page —
show — that puts it back with one tap, and the page grid still lists every page, dimmed and labelled, so the
chapter you see is never secretly shorter than the chapter you have. You can mark a page as junk by hand, or
rescue one it got wrong; either decision is permanent and outranks the arithmetic in both directions, which
is what makes skipping safe to leave on by default. It is a switch in reader settings if you would rather it
did not. Pages are fingerprinted by a background job, alongside the other library jobs in Admin → Tasks.

One honest limit: a chapter you downloaded before its pages were fingerprinted keeps the flags it was saved
with, until you download it again.

Things this app claimed that were not true

Four of them, found by reading our own documentation against our own code.

Push notifications are listed as a feature; they need a pair of keys that only the developer setup script
ever generated, so on a normal install the button was not missing-with-a-reason, it was simply absent. The
server now generates and keeps those keys on first boot, exactly as it already did for its signing secret.

docs/CONFIGURATION.md said .env.example was the authoritative list of settings. Twenty-one of twenty-three
were not in it, including the ones most worth touching on a small server — how many series a sweep may check,
the free-space floor, how long a Cloudflare-protected source is allowed. They are all there now, with their
real defaults.

The v0.6.0 changelog announced that renaming a folder no longer loses your series. That code ships switched
off and appeared in no example file. It is documented now, off by default, with its report mode explained.

And a badge added yesterday, showing which series you have downloaded, went stale the moment you downloaded
another — the function that refreshes it had no callers. Mine, from the day before.

Thanks

@hawwwwwk again, for #32:
docs/INSTALL.md still described a database container that has not existed since v0.18.0. Second time he has
caught stale install docs.