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-verify-header.txt

@@ -0,0 +1,10 @@
+# Since the background became a gradient there is a second way to lose, and it
+# is quieter still: the adaptive icon's <background> is a reference, and a
+# reference resolves to whatever the APK happens to hold. A stale APK, or an
+# overlay copy that did not run, and the name points at something else while
+# every PNG in the file is still the falcon's. So the check does not ask
+# whether drawable/ic_launcher_ground.xml is in the APK — it asks what
+# <background> RESOLVES to, through the resource table, in both build types,
+# and then reads concept 04's six gradient stops back out of the thing it
+# found. That half needs aapt2; without it the ground says NOT CHECKED and the
+# rest of the script still runs.