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-probe.txt

@@ -0,0 +1,18 @@
+        syStrip: document.querySelectorAll('.sy-strip .sy-col').length,
+        syTicks: document.querySelectorAll('.sy-strip .sy-tick').length,
+        syEst: (document.querySelector('.sy-est') || {}).textContent || '',
+        syHint: (document.querySelector('.sy-hint') || {}).textContent || '',
+        disco: document.querySelectorAll('.grid2 .release').length,
+        /* the artist page's three lanes at once — the page, the hero seed and
+           the overview — so a step can say what painted and what had not
+           landed yet: "<page>:<seed>[+art]:<overview>:<releases>" */
+        artFast: (function () {
+            try {
+                var t = __ss.top();
+                if (!t || t.n !== 'artist') return '';
+                var a = __ss.catalog.artists[String(t.c.name || '').trim().toLowerCase()];
+                if (!a) return 'no-entry';
+                var h = __ss.catalog.heroSeeds[a.id] || {}, o = __ss.catalog.overviews[a.id] || {};
+                return a.status + ':' + (h.status || '-') + (h.banner ? '+art' : '') + ':' + (o.status || '-') + ':' + ((o.albums || []).length);
+            } catch (e) { return ''; }
+        })(),