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-r37-phone-plsteps.txt

@@ -0,0 +1,6 @@
+    /* dragged on the real core: the second row to the top and straight
+       back, so the playlist is exactly as it was when it is deleted four
+       steps from here. Nothing outside the walk's own playlist is touched */
+    { name: "playlist-drag-arm", wait: 400 },
+    { do: `__drag('.pl-rows .trk', 1, 0)`, name: "playlist-dragged", wait: 2000 },
+    { do: `__drag('.pl-rows .trk', 0, 1)`, name: "playlist-dragged-back", wait: 2000 },