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-r32-probe.txt

@@ -0,0 +1,15 @@
+        /* the boot census, latched at the shell's first frame and never
+           re-opened: how many commands the app asked for before it had
+           drawn anything, how many of those left in the shell's own turn,
+           which kinds they were, and how long it took. A probe landing a
+           second and a half later still reads the launch. -1 is "the census
+           never sealed", -2 is "there is no census". bootCmds is the
+           distinct names, not the whole run of them — every step carries
+           it, and what is ever asked of it is whether a kind of command was
+           at boot at all. */
+        bootCalls: (function () { try { return __ss.boot.sealed ? __ss.boot.calls : -1; } catch (e) { return -2; } })(),
+        bootSync: (function () { try { return __ss.boot.sync; } catch (e) { return -2; } })(),
+        bootMs: (function () { try { return __ss.boot.frameMs == null ? -1 : __ss.boot.frameMs; } catch (e) { return -2; } })(),
+        bootLibMs: (function () { try { return __ss.boot.libMs == null ? -1 : __ss.boot.libMs; } catch (e) { return -2; } })(),
+        bootCmds: (function () { try { var c = __ss.boot.cmds, u = [], i; for (i = 0; i < c.length; i++) if (u.indexOf(c[i]) < 0) u.push(c[i]); return u.join(' '); } catch (e) { return ''; } })(),
+        navMs: (function () { try { var n = performance.getEntriesByType('navigation')[0]; return n ? Math.round(n.domContentLoadedEventEnd) : -1; } catch (e) { return -1; } })(),