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-r43-doc-notdone.txt

@@ -0,0 +1,11 @@
+- **A release build nobody has made.** Every APK this port has produced is a
+  debug one, with minification off. The keep rules the plugins need are now
+  written — one `consumer-rules.pro` per plugin module, plus
+  `src-tauri/android/proguard-soulstream.pro` for what belongs to no single
+  plugin — and `build.sh --release` can make and sign a release APK, off by
+  default so the deploy pipeline cannot reach it. None of it has been run.
+  The rules are a precaution against a failure that would not show up until
+  someone taps something, not a fix for anything observed; the first person
+  to type `bash src-tauri/android/build.sh --release` is doing something new,
+  and should work down the smoke list in "The release build" before believing
+  any of it.