Continue Kull through paid auction bonuses

docs/CHOAM_KULL_DESIGN.md

@@ -1,5 +1,27 @@
 # Kull Wahad: source limits and Karama interruption design
 
+## Basic paid auction bonus and Kull — 29 October 2026
+
+**Prototyped / Partial.** In the supported Basic Richese/Semuta and printed
+Kull profile, a Karama cancellation of Harkonnen's bonus draw after a paid
+ordinary or Richese cache purchase can be interrupted by Kull. The acquired
+card and paid sale remain bound while CHOAM decides and while the successful
+Kull or distinct counter is offered to Semuta. Decline or a successful counter
+resumes the original cancellation once; Kull success preserves the Karama and
+resumes the original bonus. Its original continuation owns the draw or lot
+retirement, including any automatic advance. A newly stamped receipt binds the
+sale and relevant auction state; older Kull frames retain their existing shape.
+
+The declaration-time Richese cache cancellation was already supported and is
+also covered by the new native-game cases. The live-sale tests use actual paid
+cache acquisition and physical Semuta, Kull, Karama and counter cards; only
+unopened setup/deck positions are selected. Other live cache parents, Advanced,
+Black Market, optional modules and live whole-turn answers that need an
+unproved post-sale quotation remain separate. This does not certify full Kull
+or auction rules. Online response ordering remains provisional.
+[Cache declaration and bonus evidence](../tests/kull-richese-cache-cancel-runtime.test.ts),
+[ordinary sale evidence](../tests/kull-richese-normal-bonus-runtime.test.ts).
+
 ## Basic whole-answer cancellation continuations — 29 October 2026
 
 **Prototyped / Partial.** In the supported Basic printed-Kull profile, a