Continue Kull across paid sale responses

docs/CHOAM_KULL_DESIGN.md

@@ -1,5 +1,29 @@
 # Kull Wahad: source limits and Karama interruption design
 
+## Basic paid-sale responses and Kull — 29 October 2026
+
+**Prototyped / Partial.** The supported Basic Richese/Semuta profile now also
+retains a paid ordinary or cache sale when Kull interrupts a Karama cancellation
+of Emperor's auction income. The same continuation supports cancellation of an
+Ixian ally's requested replacement after an ordinary sale; the adopted Ixian
+Technology rule excludes the Richese cache. The original sale, recipient and
+replacement request remain in place through Kull success or its distinct
+counter, with Semuta offered on each supported physical discard. The native
+auction continuation remains responsible for income, replacement and later
+bonus effects, without a forecasted draw or second payment.
+
+A validated completed normal-sale receipt no longer requires the buyer to
+retain the already-paid bid in their purse when offering or using Kull. The
+existing fence for an unfunded, still-unpaid Karama-dependent overbid remains.
+Cases with unproved whole-turn answer continuations, other sale parents,
+Advanced and optional combinations remain separate. The online order remains
+provisional. Genuine Basic fixtures use selected unopened cards and preserve
+the native sales; see [Emperor income](../tests/kull-richese-emperor-income-runtime.test.ts)
+and [Ixian replacement](../tests/kull-richese-ix-replacement-runtime.test.ts).
+[Funding cases](../tests/kull-paid-auction-funding.test.ts) exercise both paid
+buyers with empty purses and an unfunded unpaid overbid. The earlier Semuta-only
+Ixian fixture now explicitly declines the newly available Kull opportunity.
+
 ## Basic paid auction bonus and Kull — 29 October 2026
 
 **Prototyped / Partial.** In the supported Basic Richese/Semuta and printed