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-r36-halfsheet-door.txt

@@ -0,0 +1,12 @@
+    /* the playlist-file door picks FIRST too: the review only opens for a
+       file that was chosen, and a document this phone can hand no path for
+       is refused with the reason rather than half-read */
+    async function fileDoor() {
+        closeHalf();
+        try {
+            const picked = await pickImportFile();
+            if (!picked) return;
+            push("import", {});
+            void startFile(picked.path, picked.name);
+        } catch (e) { oops(e); }
+    }