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-msg29.txt

@@ -0,0 +1,14 @@
+android: the downloads say so in the shade
+
+A Save still running with the app in the background now posts a progress
+notice — how many files, the one it is on, a bar, Stop all and Open — and
+takes it down when the queue empties. It sits on its own low-importance
+channel so it can be silenced without silencing the player's card, and
+rides its own dataSync foreground service rather than the media one: a
+mediaPlayback service stops itself when the bar empties, a download is not
+playback, and nothing else was keeping the process alive for a Save with
+nothing playing — which is how the first real Save died, four tracks in.
+Stop all goes through the same cancel(id) a row's tap takes, and Transfers
+grew the matching button beside Clear finished. The walk pushes two rows
+straight into the transfer store and reads the real notification back out
+of `dumpsys notification`, without fetching anything.