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-r49-doc-proves.txt

@@ -0,0 +1,19 @@
+Then, after the step loop, twelve things the mock cannot do at all: a
+force-stop and the paused restore that follows it (waited out past
+twenty-five seconds, which is well past the ten-second FGS-kill window), the
+position restored, playback resumed, the system media session and its
+ownership, media keys, exactly one card in the shade and exactly one session
+in the system's list — the two checks that prove the media3 migration landed
+rather than doubled — the two intent filters Android Auto knocks on, the
+legacy browse one and media3's own, both resolving to `MediaService`
+(`auto-browse`, `auto-library`: the catcher for a plugin module that
+compiled and never reached the APK, which is how this project once got a
+start-up `ClassNotFoundException`), ten seconds in the background with the
+position still advancing, SoulStream's own mixer underruns, and the queue
+window that rides along with every card update and that the lock-screen card
+is now built out of. Two more lines print and never fail: whether the service
+is foreground, whether our audio focus is in the system's stack and whether
+the becoming-noisy receiver is registered; and the Auto declaration as
+`tools/auto-prober/` last read it, because `pm dump` prints no application
+meta-data and nothing else on the phone can be asked. What none of it touches
+is in "What the walk proves about the card, and what it does not", above.