test(relay): select mesh receive regression in both CI paths

Co-authored-by: Codex <codex@openai.com>
Signed-off-by: Brad Seiler <seiler@squareup.com>
(cherry picked from commit 3d02a44a92)
Signed-off-by: Brad Seiler <seiler@squareup.com>

Justfile

@@ -591,6 +591,8 @@ test-unit:
                 + test(=state::tests::disconnect_community_wins_reason_losing_nip_fi_does_not_enqueue_frame)
                 + test(=state::tests::manager_disconnect_sets_reason_enqueues_frame_then_cancels)
                 + test(/^api::nip_fi::/)'
+        # Retain partially consumed mesh receives across housekeeping ticks.
+        cargo nextest run -p buzz-relay --lib -E 'test(=mesh_boot::tests::demo_echo_retains_pending_receive_across_housekeeping_ticks)'
         # boot_lifecycle spawns the real relay binary and asserts its startup
         # lifecycle, including that buzz_startup_phase_* reaches /metrics. Its
         # non-ignored tests need no Postgres or Redis; the Postgres cases are

scripts/run-tests.sh

@@ -339,6 +339,9 @@ run_unit_tests() {
   run_test_step "buzz-relay binary tests" \
     cargo test -p buzz-relay --bin buzz-relay -- --nocapture
 
+  run_test_step "buzz-relay mesh receive lifetime regression" \
+    cargo test -p buzz-relay --lib mesh_boot::tests::demo_echo_retains_pending_receive_across_housekeeping_ticks -- --exact --nocapture
+
   run_test_step "buzz-relay boot lifecycle tests" \
     cargo test -p buzz-relay --test boot_lifecycle -- --nocapture
 }