android: the handoff — the pending rounds, the pipeline, and what is unverified

Everything written this session that has not been through the device: rounds 43
to 48 (each patch adversarially verified, 43's transient-notice expectation
fixed), a partial round 49, the pipeline scripts, the Android Auto design and
the icon comparison mock. Also the two harness changes that were never A/B'd —
adaptive waits, which may only shorten a declared wait and never lengthen it,
and a ship that runs the mock walk and the deploy at the same time. The A/B and
its 255-step baseline are in handoff/tools; main stays at what the phone has
actually walked.

handoff/rounds/ins-r38-doc.txt

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+The **whole discography** is a page of its own
+(`src/mobile/screens/Discography.svelte`), reached from the artist page's
+Discography head with **All**, and from under its grid with "Show all N
+Albums" — which is also where that grid now stops: it shows twelve of the
+active tab, because before this an artist with 140 releases rendered 140
+cards. The page is the desktop's `CatalogDiscography.svelte` reduced to the
+four things it has that the artist page's tabs do not: **All** in front of
+the categories (built by CONCATENATING the per-category families, never by
+re-folding the whole set — a single sharing an album's base title would fold
+into it as a phantom edition), a **sort** (newest, oldest, A–Z, Z–A), a
+**grouping** by year, and the **editions kept whole**, opened in place under
+their own record. Three of the desktop's are deliberately left behind: the
+per-record tracklists (140 records is 140 `catalog_album` calls over mobile
+data, for rows one tap away on the record page), the per-record accent
+sampled from each cover, and the scroll-led banner. The year is written into
+the list where the desktop has a sticky year rail — a phone list is read top
+to bottom. The order and the grouping live on the nav entry and are edited
+from the **Sort & group** sheet, Library's own idiom; under a name order By
+year is not offered, because the years would repeat out of sequence, and the
+sheet says so. The list is capped at sixty rows with a "+ N more releases"
+button (Browse's rule), and the cap is taken BEFORE the grouping, so the last
+year on screen can be a part of itself. Filing, families and labels all come
+from `src/mobile/disco.js` — the artist page's own classifier, called a
+second time over the same cached albums. The desktop cannot do that: its
+filing depends on a background description harvest and deferred MB type
+hints a second page would not read, which is why `CatalogDiscography.svelte`
+takes the artist page's computed tab list as the same array object instead.