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-r29-drawable.txt

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- the status-bar glyph: an arrow into a tray, white on transparent, as
+     the shade wants. Its own copy on purpose — R.drawable.ic_soulstream_note
+     belongs to the media-session module's R class and is not visible here -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="#FFFFFFFF"
+        android:pathData="M11,3h2v7h3.5L12,15.5 7.5,10H11V3z" />
+    <path
+        android:fillColor="#FFFFFFFF"
+        android:pathData="M5,17.5h14v2.5H5z" />
+</vector>