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-r46-kotlin-log.txt

@@ -0,0 +1,16 @@
+        val args = invoke.parseArgs(NowPlayingArgs::class.java)
+        /* The window is on no screen anywhere — MediaService ignores it and
+           the card cannot show it — so logcat is the only place on the
+           device it can be read back, and tests/mobile/smoke.mjs reads it
+           from exactly here. One line per update, and an update is a track
+           change, a transport change or the thirty-second top-up, never a
+           position tick. `at=` goes LAST because a title may hold anything,
+           spaces and `=` included. */
+        val window = args.queue ?: emptyList()
+        android.util.Log.i(
+            "SoulStream",
+            "media window n=" + window.size + " i=" + (args.queueIndex ?: -1) +
+                " art=" + window.count { !it.artKey.isNullOrEmpty() } +
+                " at=" + (window.getOrNull(args.queueIndex ?: -1)?.title ?: ""),
+        )
+        ensureNotificationPermission()