Preserve Basic shared arrival reactions through Semuta

Admit the original ordered Ecaz/Moritani entry in bare Basic Richese games, retain both native opportunities during fresh discard recovery, and bind each suspended child to its actual arrival. Show the current discard response in the table banner.

Cover real five-seat setup and placements, both owner orders, physical payouts/draws/gifts, persistent controls and minimal legal bot participation.

docs/IMPLEMENTATION_STATUS.md

@@ -1,5 +1,33 @@
 # Dune implementation status
 
+## 24 October 2026 — Basic shared Ambassador and Terror arrival
+
+Admit the original ordered native entry in the existing bare Basic Richese
+profile, with no new serialized receipt or timing ruling. CHOAM/Ix Ambassador
+and Sabotage/Robbery fresh groups can suspend their own active parent stage
+for Semuta while the other originally eligible owner remains queued. Bind the
+child to original signature/order, owner/token/event, cause, sector and turn;
+Terror also retains its entering amount and elite count. Keep the original
+credit/draw/gift and physical entry exactly once. The banner names the shared
+discard response and labels the inherited storm-order interpretation provisional.
+
+Disjoint source/control lanes and bounded review pass12 files144/144,
+types/lint/build, eight gameplay/control/GameTable SSR journeys and eight
+existing-profile continuations accepting69 proposals. Real five-seat setup,
+lobby circles and paid cache/placements supply139–142 source actions; prior
+Semuta transfer and overflow hands remain explicit conserved staging. Both
+owner orders, shipment/movement, selected BG copy, full-hand claim and empty
+CHOAM grants have focused evidence. A first actual entry reproduces preflight
+rejection; parent-only admission then reproduces the missing Semuta pause.
+Feedback repairs a null-vs-unopened optional-field assertion, two const lint
+issues and an older Truthtrance test's obsolete native Orni exclusion.
+
+Private final proof:20261024-semuta-arrival-overlap/frozen-integrated-3.
+The canonical [source and boundaries](SEMUTA_SOURCE_UPDATE_20260907.md#basic-shared-ambassador-and-terror-arrival--24-october-2026)
+retain Advanced/module/nested-effect limits and unfinished complete-mode,
+browser/deployed and comprehensive assurance. No game/database/reset/restart/
+deployment operation or AI strategy/calibration.
+
 ## 24 October 2026 — Native Basic Ornithopter recovery and arrival
 
 Admit the completed movement-card fresh group in the existing bare Basic E3