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/commit-msg17.txt

@@ -0,0 +1,5 @@
+android: the nav's badges — transfers in flight on You, unread chats on Community
+
+The desktop's title-bar download ring and its unread indicator, on the
+phone's nav: a count on You while Save is fetching, a count on Community
+when a chat has unread lines.