diag(nests-interop): trace data disproves moq-relay routing-race hypothesis

Step 1 of `2026-05-07-moq-relay-routing-investigation.md` ran a
5× sweep on `HangInteropTest` with per-test moq-relay trace
capture. Failure rate: 3/5, all in
`late_join_listener_still_decodes_tail`. Cross-referencing the
relay trace (`encoding self=Subscribe …catalog.json` on conn{id=0}
at T+2.07 s) with the speaker's `Log.d("NestTx")` lines (only
`ANNOUNCE inbound prefix=''` at T=0; NO `SUBSCRIBE inbound id=0`
in the failing window) shows the relay correctly forwards the
upstream SUBSCRIBE — the bidi just never reaches
`MoqLiteSession.handleInboundBidi`. So the prior plan's
"moq-relay 0.10.x per-broadcast subscribe-routing race"
hypothesis is wrong.

Re-scoped Priority 1 of the closure roadmap to point at
`:quic`'s peer-bidi surfacing path instead. The actual bug is
between QUIC's bidi-accept and `incomingBidiStreams()` flow.
Spotless-formatted Kotlin imports.

Trace artefacts preserved under
`nestsClient/plans/artefacts/2026-05-07-routing-race-disproven/`
so the next agent (QUIC owner) doesn't have to re-run the sweep.

nestsClient/src/jvmTest/kotlin/com/vitorpamplona/nestsclient/interop/native/BrowserInteropTest.kt

@@ -45,6 +45,8 @@ import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.runBlocking
 import kotlinx.coroutines.withTimeoutOrNull
+import org.junit.Rule
+import org.junit.rules.TestName
 import java.io.File
 import java.nio.ByteBuffer
 import java.nio.ByteOrder
@@ -52,8 +54,6 @@ import java.util.UUID
 import kotlin.test.BeforeTest
 import kotlin.test.Test
 import kotlin.test.assertTrue
-import org.junit.Rule
-import org.junit.rules.TestName
 
 /**
  * Phase 4 (T16) — browser-side cross-stack interop scenarios.

nestsClient/src/jvmTest/kotlin/com/vitorpamplona/nestsclient/interop/native/HangInteropTest.kt

@@ -48,6 +48,8 @@ import kotlinx.coroutines.flow.take
 import kotlinx.coroutines.flow.toList
 import kotlinx.coroutines.runBlocking
 import kotlinx.coroutines.withTimeoutOrNull
+import org.junit.Rule
+import org.junit.rules.TestName
 import java.io.File
 import java.nio.ByteBuffer
 import java.nio.ByteOrder
@@ -58,8 +60,6 @@ import kotlin.test.Test
 import kotlin.test.assertEquals
 import kotlin.test.assertFalse
 import kotlin.test.assertTrue
-import org.junit.Rule
-import org.junit.rules.TestName
 
 /**
  * Cross-stack interop scenarios driving the reference `kixelated/moq`