docs(nests-interop): T16 closure-roadmap Priority 3 closed (CI gating wired)

10/10 sweep × 22 tests = 220/220 hard-pass post-recalibration on
the merged branch (~5m 28s per sweep). Stability bar from
`2026-05-07-cross-stack-interop-ci-gating.md` met; both
`hang-interop` and `browser-interop` jobs in build.yml since
commit `21947bc5`.

Marks Priority 3 closed in:
- `2026-05-07-cross-stack-interop-ci-gating.md`
- `2026-05-07-t16-closure-roadmap.md`
- `2026-05-06-cross-stack-interop-test-results.md` (CI integration § wired)
- `2026-05-06-cross-stack-interop-test-gap-matrix.md` (history notes)

T16 closure roadmap is now done end-to-end:
- Priority 1 ✅ closed by `:quic` main merge (commit `8f8251a5`)
- Priority 2 ✅ closed by hard-floor tightening (commits `04be38ad`,
  `029329af`, `f8dc9c59`)
- Priority 3 ✅ closed by CI yaml + 10/10 stability (commit `21947bc5`)

Open follow-ups remain (browser hot-swap re-attach,
post-reconnect listener cliff, framesPerGroup production rerun)
but none block T16 closure.

nestsClient/plans/2026-05-06-cross-stack-interop-test-gap-matrix.md

@@ -85,12 +85,16 @@ DoD #5 (gap matrix coverage) closed.
   Hard floors landed in
   `2026-05-07-tighten-cross-stack-assertions.md` after the merge:
   late-join (`≥ 1.5 s after warmup`), mute-window (`≥ 2.5 s`
-  lower + tightened `< 5.0 s` upper), I14 (`decoderOutputs ≥ 4`),
-  stereo / hot-swap / packet-loss (`≥ 0.5–1 s`), and the
+  lower + `< 5.5 s` upper kept), I14 (`decoderOutputs ≥ 4`),
+  stereo (`≥ 1 s × 2 ch`), packet-loss (`≥ 0.5 s`), and the
   browser-publisher helper now hard-asserts on the listener side.
-- Suite-mode runs are stable post-merge (5/5 sweeps green on
-  `HangInteropTest` × hardened `BrowserInteropTest`). CI gating
-  follow-up: `2026-05-07-cross-stack-interop-ci-gating.md`.
+  Hot-swap kept a (now-documented) soft-pass on the browser
+  tier — Chromium's `@moq/lite` 0.2.x re-attach across
+  `Active::Ended → Active` is unreliable; T12 protection is
+  asserted by the hang-tier counterpart.
+- CI gating wired in
+  `2026-05-07-cross-stack-interop-ci-gating.md` after a 10/10
+  sweep × 22 tests = 220/220 pass stability bar.
 
 ## Files referenced
 

nestsClient/plans/2026-05-06-cross-stack-interop-test-results.md

@@ -440,22 +440,25 @@ relay-side timing under load.
 
 ## CI integration
 
-**Not wired.** Intentionally kept out of `.github/workflows/build.yml`
-for now — the full suite shows ~33% flake on
-`late_join_listener_still_decodes_tail` (catalog cancelled, race
-between speaker's `setOnNewSubscriber` hook and the listener's
-catalog subscribe-bidi) that the per-method `resetShared()` fix
-doesn't fully resolve. Wiring CI on a flaky suite would burn
-maintainer time on false reds.
+**Wired** as of 2026-05-07 (commit `21947bc5`). Both
+`hang-interop` and `browser-interop` jobs in
+`.github/workflows/build.yml`, gated on `lint`, `ubuntu-latest`,
+30 min timeout each, with cached cargo + bun + Playwright Chromium.
 
-The suite runs locally via `-DnestsHangInterop=true` and is
-documented as the regression bar for any future MoQ wire-format
-or moq-lite session-cycle changes. Re-evaluate CI gating after the
-late-join flake's root cause lands.
+Stability bar that unblocked CI: **10/10 BUILD SUCCESSFUL × 22
+tests = 220/220 pass** on the merged branch (~5m 28s per sweep,
+steady state). The earlier `late_join_listener_still_decodes_tail`
+flake was a `:quic` post-handshake bidi-acceptance bug, not a
+moq-relay routing race; the QUIC team's recent main work
+(commits `2a4c07ae`, `d5c854be`, `b622d0c9`, `86a4727e`,
+`31d19258`) closed it. See
+`2026-05-07-moq-relay-routing-investigation.md` § Closure for
+the trace evidence and
+`2026-05-07-t16-closure-roadmap.md` for the rolled-up status.
 
-Browser interop (`feat/nests-browser-interop`) follows the same
-"locally only via `-DnestsBrowserInterop=true`" rule pending its own
-flake assessment.
+The 2-week post-merge CI green-rate watch is on the maintainer
+who lands this: ≥ 95 % required per the plan's stability gate;
+otherwise pull both jobs and reopen the routing investigation.
 
 ## Pending follow-ups
 

nestsClient/plans/2026-05-07-cross-stack-interop-ci-gating.md

@@ -1,10 +1,15 @@
 # Plan: wire CI gating for the cross-stack interop suite
 
-**Status:** specced — pickup ready.
-**Depends on:**
-- `2026-05-07-moq-relay-routing-investigation.md` closed
-- `2026-05-07-tighten-cross-stack-assertions.md` closed
-- 5/5 sweep stability verified
+**Status:** ✅ CLOSED 2026-05-07. Both jobs wired in commit
+`21947bc5` (path-tweaked from the original removed shape per
+the `nestsClient/tests/browser-interop/` move). Stability-bar
+sweep: **10/10 BUILD SUCCESSFUL × 22 tests = 220/220 pass.**
+Acceptance bar from the roadmap met.
+
+**Depended on:**
+- `2026-05-07-moq-relay-routing-investigation.md` closed (✅)
+- `2026-05-07-tighten-cross-stack-assertions.md` closed (✅)
+- 10/10 sweep stability verified (✅)
 
 This is the FINAL step of the T16 closure. With stable hard-pass
 suites, CI gating becomes safe and meaningful.
@@ -108,24 +113,18 @@ in parallel with that without resource contention. They use
 different ports (NativeMoqRelayHarness reserves `ServerSocket(0)`)
 so they're independent at the network level.
 
-## Stability bar
-
-Before flipping the CI switch, run:
+## Stability bar — verified ✅
 
 ```
-for i in 1 2 3 4 5 6 7 8 9 10; do
-  echo "=== run $i ==="
+for i in 1..10; do
   ./gradlew :nestsClient:jvmTest \
-    --tests HangInteropTest \
-    --tests BrowserInteropTest \
-    -DnestsHangInterop=true \
-    -DnestsBrowserInterop=true \
-    --rerun-tasks 2>&1 | grep -E "FAILED]|BUILD"
+    --tests HangInteropTest --tests BrowserInteropTest \
+    -DnestsHangInterop=true -DnestsBrowserInterop=true --rerun-tasks
 done
 ```
 
-10/10 BUILD SUCCESSFUL. If even one fails, do NOT wire CI; loop
-back to the routing investigation.
+Result: **10/10 BUILD SUCCESSFUL × 22 tests = 220/220 pass.**
+~5m 28s steady state per sweep on the agent rig.
 
 ## CI runtime budget
 

nestsClient/plans/2026-05-07-t16-closure-roadmap.md

@@ -67,23 +67,22 @@ HangInteropTest with their current soft-pass assertions intact.
 
 **Acceptance bar met.** 5/5 sweep with hard assertions.
 
-## Priority 3 — `2026-05-07-cross-stack-interop-ci-gating.md`
+## Priority 3 — `2026-05-07-cross-stack-interop-ci-gating.md` ✅ CLOSED
 
-**Why third.** Stability + hard-asserts in place → CI is now a
-net positive (catches regressions, doesn't burn maintainer time
-on false reds).
+> **Closed 2026-05-07** by commit `21947bc5`. Both
+> `hang-interop` and `browser-interop` jobs landed in
+> `.github/workflows/build.yml`, gated on `lint`,
+> `ubuntu-latest`, 30 min timeout, with cached cargo + bun +
+> Playwright Chromium. Path-tweaked from the original removed
+> shape because the browser harness moved from
+> `nestsClient-browser-interop/` to
+> `nestsClient/tests/browser-interop/` (commit `bd7b166f`).
 
-**What lands.**
-- Re-add `hang-interop` job (was at commit `6829ab727`'s parent;
-  `git show 6829ab727 -- .github/workflows/build.yml` reverse
-  gives the exact diff).
-- Re-add `browser-interop` job (same pattern, plus bun +
-  Playwright caches).
-- Documentation update across the results plan + gap matrix.
-
-**Acceptance bar.** 10/10 sweep before merge; ≥ 95% CI green
-rate over the first 2 weeks. If lower, the upstream race isn't
-fully closed — pull the jobs.
+**Acceptance bar met.** 10/10 sweep BUILD SUCCESSFUL × 22 tests
+= **220/220 pass** (~5m 28s steady state per sweep on the agent
+rig). The first 2 weeks of post-merge CI runs still need a
+maintainer to monitor flake rate (per the plan's "≥ 95% green
+rate" gate); pull the jobs again if it falls below.
 
 ## Independent track — `2026-05-07-framespergroup-production-rerun.md`