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-r35-store.txt

@@ -0,0 +1,23 @@
+/* ── export: the desktop's five profiles, in the desktop's order and its
+   own words. The file itself is built in Rust by the writers the desktop
+   uses (playlist_formats), so nothing here knows what an M3U8 looks like —
+   two exports that drift are worse than one that is missing. What comes
+   back is only where it went: a path on the desktop, the document's name
+   on the phone, and null when the sheet was dismissed. ── */
+export const EXPORTS = [
+    ["m3u8", "M3U8", "one line a track — most players read it"],
+    ["xspf", "XSPF", "an open format, titles and times carried"],
+    ["pls", "PLS", "older players want this one"],
+    ["csv", "CSV", "a row a track, for a spreadsheet"],
+    ["json", "Backup (JSON)", "everything about it, this app's own"],
+];
+/** Export `p` as `format` — the system's own sheet says where it goes.
+ *  False, and nothing said, when that sheet was dismissed: nothing
+ *  happened, so there is nothing to report. */
+export async function exportPlaylist(p, format) {
+    const where = await api.playlistExport(p.id, format);
+    if (!where) return false;
+    note(`Exported as ${basename(where)}`);
+    return true;
+}
+