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-r30-mock-activity.txt

@@ -0,0 +1,9 @@
+    /* 214 s at a frame per 100 ms: three sung stretches with quiet between
+       them, which is exactly what activeSegments is built to find — 150 s of
+       active time, far over its 4 s floor, so the rough pass lays all three
+       lines and the first one lands at 10 s */
+    if (cmd === "lyrics_vocal_activity") {
+        const sung = [[10, 60], [80, 140], [160, 200]];
+        const frames = Array.from({ length: 2140 }, (_, i) => (sung.some(([a, b]) => i >= a * 10 && i < b * 10) ? 0.9 : 0.04));
+        return new Promise((r) => setTimeout(() => r({ frameMs: 100, frames }), 250));
+    }