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-r31-probe.txt

@@ -0,0 +1,20 @@
+        /* ── the weather: what the screen says when a read fails, an answer
+           is empty, or nobody is signed in. Every one of these is a line
+           this round put there; before it they were an empty box, a spinner
+           with no end, or a Rust string in the red toast. */
+        slskOn: (function () { try { return __ss.slsk.connection; } catch (e) { return ''; } })(),
+        signin: !!document.querySelector('.signin'),
+        signinErr: (document.querySelector('.signin-err') || {}).textContent || '',
+        why: (document.querySelector('.stub.why') || {}).textContent || '',
+        /* the toast's one action, by its words: "Try again" or "Sign in" */
+        retry: (document.querySelector('.toast:not(.notice) .na') || {}).textContent || '',
+        again: !![].slice.call(document.querySelectorAll('.imp-foot .btn')).find(function (b) { return /Try again/.test(b.textContent); }),
+        roomsNote: (document.querySelector('.rooms-note') || {}).textContent || '',
+        offlineNote: (document.querySelector('.offline-note') || {}).textContent || '',
+        netAsk: !!document.querySelector('.net-ask'),
+        folderGone: (document.querySelector('.folder-gone') || {}).textContent || '',
+        lyrNote: (document.querySelector('.lyr-note') || {}).textContent || '',
+        lyrTools: !!document.querySelector('.lyr-tools'),
+        trks: document.querySelectorAll('.screen .trk').length,
+        /* the phone's trouble-words step leaves its eleven sentences here */
+        trouble: (function () { try { return String(window.__trouble || ''); } catch (e) { return ''; } })(),