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-r47-adaptive-icon.txt

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- @mipmap, not the kit's @drawable: the layers ship as PNGs under
+     mipmap-*, and @drawable/ic_launcher_foreground still resolves to the
+     template robot in the generated project.
+
+     The background is a drawable of our own — concept 04's gradient ground,
+     drawable/ic_launcher_ground.xml — and the name is chosen so that it
+     CANNOT collide with the template's drawable/ic_launcher_background.xml,
+     which is still sitting in gen/android as the green robot. If the overlay
+     ever fails to reach the generated project, this reference does not
+     resolve and aapt2 stops the build, instead of quietly drawing that. -->
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_ground" />
+    <foreground android:drawable="@mipmap/ic_launcher_foreground" />
+    <monochrome android:drawable="@mipmap/ic_launcher_monochrome" />
+</adaptive-icon>