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/commit-msg31.txt

@@ -0,0 +1,29 @@
+android: what the phone says when things go wrong
+
+Fifty-nine places put a raw Rust string into a field a person reads, and
+the red toast drew it verbatim — a phone in a lift showed "could not reach
+server: io: failed to lookup address information" under the password box.
+One translator, src/mobile/trouble.js, called where an error is DRAWN
+rather than where it is caught: the stores keep what Rust said and only
+the sentence on screen is ours, so every sink is fixed at once. Five
+screens that drew a failed read as an empty answer stop lying — Tracks no
+longer reports a broken database as an empty library, a playlist that
+could not be read is not an empty playlist, the lyrics face says a lookup
+failed instead of "no lyrics" and finally carries the ⋯ that reaches Paste
+lyrics, Gaps says why it could not reach the catalogue, and Search signed
+out says so where it used to render nothing at all. The room list, which
+is fire-and-forget over the wire, gets a twelve-second end and a Try
+again.
+
+rescan_library ran prune_missing() first, which deletes every track row
+whose file does not exist — so one tap on You → Rescan library with the
+folder unreachable emptied the whole index and returned Ok(()). It now
+makes the root if it is merely not there yet and refuses if it cannot be
+read, and You draws the path with what to do about it.
+
+The mock grew a weather system so the walk can drive all of this: fail,
+answer, offline and clear, checked before dispatch so a plugin command
+arms like any other. Nine mock steps and one on the phone — the first
+steps in thirty rounds that ever made a command reject or saw the client
+signed out — and the last of them puts the weather away and leaves the app
+as it found it.