docs(nests-interop): T16 closure-roadmap Priority 1 closed by main merge
5/5 sweep BUILD SUCCESSFUL post-merge of `origin/main` (5 `:quic`
commits: ALPN-list threading `2a4c07ae`, PTO STREAM retransmits
`d5c854be`, RFC 9001 §6 1-RTT key update `b622d0c9`, multiconnect
pacing `86a4727e`, qlog flush `31d19258`). Pre-merge baseline on
the same branch with the same TRACE capture: 3 fail / 5,
all in `late_join_listener_still_decodes_tail`. 55/55 tests pass.
Updated:
- routing-investigation: marked CLOSED, added Closure section with
pre-merge vs post-merge sweep counts + sample 1.6 ms-RTT
late-join trace.
- late-join investigation: marked closed.
- closure-roadmap: Priority 1 ✅; Priorities 2 and 3 unblocked.
Preserved a post-merge passing late-join relay trace under
`nestsClient/plans/artefacts/2026-05-07-routing-race-closed-by-merge/`
as the "what healthy looks like" baseline.
Claude
eea746a635