Look again for a waiting episode, and place a library nobody has placedon-device-detection

The last two pieces, both of a kind: a feature that was built, wired and correct, and did nothing
because the thing that triggers it was missing.

**"Waiting for server" lasted until the next refresh.** The server starts fetching the moment it
is asked and its on-demand mirrors finish in seconds -- 183 of them over thirty days, several
completing two or three seconds apart. The phone looked again only on a feed refresh, which is the
5am alarm, a launch or the button, so an episode the server would have within the minute read
"waiting for server" for hours. That gap, not anything on the server, is what made "not checked
yet" a state a listener sees.

A wait now schedules one look back a minute later, through WaitingDownloads, which already bounds
the work two ways. KEEP rather than the REPLACE downloadNow uses: several episodes landing in the
waiting state one after another is the normal case, and REPLACE would push the retry a minute
further out each time until a queue of them starved it. The first wait sets the time.

The hook lives on ServerSkips rather than on a wrapper around it. The wrapper version was written
first and is the sort of thing that rots silently: changing the graph's declared type back to
ServerSkips drops the override, nothing fails, and the retry simply stops. WaitForServerWiringTest
now pins that a wait is reported through the real class, and was watched failing without it.

**Tiers were shipped empty.** The control, the push on every refresh, the server ordering its work
by it -- all built, all tested, and not one of 43 shows ever placed, because placing them was a
tapping job. So the server worked the library in feed order and the news waited behind whatever
else turned up, which is the exact thing the feature was asked for.

TierSeeder reads it off the feeds instead, checked against the real library before it was written.
It puts Tangle, Up First, Science Friday and Wards Way in Topical; both Dan Carlin shows, Radiolab,
Reply All and the bulk-published back catalogues in Whenever; and leaves the weekly middle -- 23 of
the 42 -- alone. Peter named Up First and Tangle as the ones to hurry and Dan Carlin and Radiolab
as the ones to let wait, so the rule agrees with the person it is for.

Publication rate alone does not work, which is why there is a floor. Serial, LOW and The Outer
Reach each measure a median gap near zero because a whole season went up at once: on rate they look
more topical than the news and mean the exact opposite. A gap under half a day is a back catalogue,
not a daily show.

It is a seed, not a policy. It runs once, touches only shows still sitting at the default, and
never a show placed by hand -- and it declines to spend its one run on a library with no episodes
to judge yet, or a fresh install would be marked done having placed nothing. Afterwards the control
in the show's settings is the only thing that decides.

Verified on the emulator rather than argued: Darknet Diaries, fortnightly, placed itself as
"Whenever" on a refresh with nothing tapped.

RetryWaitingWorker joins the three WorkManager entry points already excluded from coverage, under
the list's own rule -- the decisions are WaitingDownloads', and those are measured.

1071 tests, detekt 0, lint clean, coverage 95.29% -> 95.35%.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018AwnALZL6bD4VBtATDVv3B

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