Offer Semuta on clean early-ended Ornithopter discard

docs/SEMUTA_SOURCE_UPDATE_20260907.md

@@ -63,28 +63,32 @@ Do not ask again about normal targets, forced-discard owner bookkeeping, simulta
 
 The explicit `semuta` development profile starts a fresh Richese roster
 without opening ordinary expansion starts. It now interrupts **one public
-ordinary-card discard or the used Box after a completed paid Nullentropy
-search**, provided the parent transaction is clean, with a neutral
-fresh-discard opportunity for every seat regardless of hidden Semuta
-possession. Each seat can Continue; only the canonical holder with a
-free hand slot and a card discarded by another player can commit. The
-sole eligible fresh card transfers automatically in the same accepted
-action, then Semuta goes to the normal discard pile. The saved ordinary
-card effect or Box parent resumes once; passing by every seat preserves
-the original discard and effect. No face from an undisclosed event is
-projected before commitment. Owner-only multi-candidate selection
-support exists in the reaction component and bot adapter, but no
-multi-discard producer is activated in this bounded runtime.
+ordinary-card discard, the used Box after a completed paid Nullentropy
+search, or an Ornithopter retired by ending movement early**, provided
+the parent transaction is clean, with a neutral fresh-discard opportunity
+for every seat regardless of hidden Semuta possession. The flight's
+already committed movement and physical escrow remain intact; a claim
+or all-seat decline advances the saved movement queue exactly once.
+Each seat can Continue; only the canonical holder with a free hand slot
+and a card discarded by another player can commit. The sole eligible
+fresh card transfers automatically in the same accepted action, then
+Semuta goes to the normal discard pile. The saved ordinary effect or
+Box parent resumes once; passing by every seat preserves the original
+discard and effect. No face from an undisclosed event is projected
+before commitment. Owner-only multi-candidate selection support exists
+in the reaction component and bot adapter, but no multi-discard
+producer is activated in this bounded runtime.
 
 This neutral all-seat acknowledgement is a conservative **application
 policy**, not a newly discovered publisher timing rule. The explicit
 free-slot requirement is a provisional safety guard, not the printed
 resolution of full-hand take-before-discard. Auction, CHOAM market,
-pending gifts, competing responses and other typed discard producers
-retain their existing automatic continuation; Semuta cannot claim those
-events yet. The completed Box's selected search card stays private and
-its paid shuffle is not repeated when another seat takes the used Box.
-No source ruling is inferred from this omission. The
+pending gifts, competing responses, completed Ornithopter flights with
+arrival follow-up and other typed discard producers retain their existing
+automatic continuation; Semuta cannot claim those events yet. The
+completed Box's selected search card stays private and its paid shuffle
+is not repeated when another seat takes the used Box. No source ruling
+is inferred from this omission. The
 separate [reaction privacy audit](SEMUTA_PRIVACY_REVIEW.md) explains why
 auto-closing only when nobody secretly holds the card would leak
 possession. The main game and public expansion gates remain closed.