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-r23-smoke-phone-expect.txt

@@ -0,0 +1,8 @@
+    /* the walked album's track may genuinely have no words, so the room's
+       own rows are conditional — the discard is not */
+    "lyrics-autosync-off": (i) => !i.toast && (i.lyrAuto === "" || i.lyrAuto === "off"),
+    "lyrics-autosync-on": (i) => !i.toast && (i.lyrAuto === "" || i.lyrAuto === "on"),
+    "sync-room": (i) => !i.toast && (!i.sync || /^0 \/ [1-9]/.test(i.syCount)),
+    "sync-tapped": (i) => !i.toast && (!i.sync || /^2 \//.test(i.syCount)),
+    "sync-undone": (i) => !i.toast && (!i.sync || /^1 \//.test(i.syCount)),
+    "sync-discarded": (i) => !i.sync && !i.toast,