Integrate Harkonnen Nexus traitor retirement and Mentat replacement

docs/RULE_DECISIONS.md

@@ -122,6 +122,7 @@ independent decisions are not reconciled by this cutover.
 | Guild Nexus Betrayal shipment payment | Replace one original funded positive fee in full, including own pre-funded payment and the printed full occupied-Junction override; preserve original payer/contributions, consume already-debited donor escrow once and deliver the original physical shipment once. Native applicable stop/rate responses precede the bounded gate; zero/stopped shipments supply no award or Nexus cost. Public possible held-Nexus seats acknowledge uniformly; private Use changes no public price/source disclosure. Fresh classic/native-Guild/Nexus with optional genuinely seeded Homeworlds only; unsupported native Cunning/Richese shipment overlays block before card/parent commitment, and restored transport independently requires the native Guild grant. Bounded engine/SQL/bot/CLI/phone custody and refresh are locally verified; no new priority/immunity, ordinary occupation/rounding ruling or extra shipment. Broad/public/live gates remain closed. | [Printed source and bounded contract](NEXUS_GUILD_RULES.md#nexus-guild-betrayal), [common protocol](NEXUS_CARD_RULES.md#guild-betrayal-funded-payment-protocol), [internal checklist](../game/reference.ts) |
 | Ixian Nexus Secret Ally replacement | Fresh classic/base-deck/Nexus-only Basic or Advanced local `ixian-replacement` profile binds one genuine normal paid/printed Karama purchase. Discard exactly that purchased physical card before privately drawing the actual deck top; full-hand and exhausted-deck same-card redraw are legal. Keep original payment, income and native auction suffix once; no refund, re-auction or new native Ixian Karama response. Every publicly possible supported unallied held-Nexus buyer gets the same neutral choice irrespective of hidden face; only the owner has Pass/entitled inspection and private eligible Use. This is an inferred development privacy convention, not publisher timing. Harkonnen buyers, Richese cache/Black Market/special origins, anytime overlays and combined modules stay guarded pending their independent source/priority questions. Existing native Ixian ally replacement is distinct. Verification Planned; no retrofit, public start or full-family certification. | [Photographed face and bounded runtime contract](NEXUS_IXIAN_REPLACEMENT_RULES.md#bounded-local-runtime-contract) |
 | Ixian Nexus Betrayal: Bidding or Technology | Fresh native-Ixian/classic-or-Tleilaxu Basic/Advanced local `ixian-betrayal` uses Ix47 Treachery and Nexus alone, with no initial Nexus deal or old-save retrofit. Resolve actual native Karama/BG counters first; a native denial opens no Nexus gate or cost. After all native passes, uniform publicly possible unallied non-Ixian held-Nexus seats acknowledge before the native effect; concealed face governs only private Use. These are bounded privacy/ordering inferences, not publisher universal priority. One physical Ixian Nexus denies one current Bidding attempt (normal count, no Ixian inspection/return) or one Advanced Technology declaration (both card locations preserved, attempt remains used); all-pass allows the original effect and suffix once. No whole-phase ban, completed undo, invented direct-Nexus Karama counter or blanket immunity. Richese special-lot exchange, wider priority/modules, complete games, strategy and public/live release remain open; verification is Planned pending frozen direct evidence. | [Photographed face and native source protocol](NEXUS_CARD_RULES.md#bounded-ixian-betrayal-source-protocol--1-october-2026), [fresh local runtime and acceptance](NEXUS_CARD_RUNTIME.md#bounded-ixian-betrayal-local-runtime--1-october-2026), [five-facet internal topic](../game/reference.ts) |
+| Harkonnen Nexus Betrayal local preview | Fresh classic/base33/Nexus-only `harkonnen-betrayal` admits genuine personal/allied native matching calls. Native allied Karama/BG allowance comes first; a provisional uniform acknowledgement precedes the original outcome. Use returns the exact physical traitor immediately and preserves one automatic private actual Mentat replacement. The local ordering/privacy convention is not publisher/user priority and does not answer the previously asked universal reaction policy; public starts, old-game retrofit, arbitrary stacks and combined modules remain gated. Bounded native/private/recovery/CLI/phone verification is Partial development verified, not complete modes or deployment. | [Bounded source contract](NEXUS_HARKONNEN_RULES.md#bounded-betrayal-preview-contract--1-october-2026), [runtime limits](NEXUS_CARD_RUNTIME.md) |
 | CHOAM Secret Ally | Absent-faction Collection trade spends one actual Worthless card and the Nexus for two bank spice. It is separate from native Cunning and Auditor; the battle inspection alternative remains missing. | [Prototype contract](NEXUS_CHOAM_SECRET_ALLY.md) |
 | Sapho movement | At a clean boundary, first reorders only remaining unstarted turns; completed turns stay completed. Advanced Guild must have finished or be absent. Last retains existing protection after Guild. | [Existing source contract](JUICE_OF_SAPHO_SOURCE_UPDATE.md#movement-firstlast), [runtime](JUICE_OF_SAPHO_RUNTIME.md) |
 | Basic CHOAM / Leader Skills | Compose existing ordinary skills with native sales and own-leader Ghola revival. Finish the private optional replacement before the exact suspended sale resumes. The free revival remains completed if the resumed sale is canceled. Basic uses five ordinary leaders and 35 Treachery Cards; Auditor remains Advanced and ineligible for skills. | [Integration and source contracts](CHOAM_LEADER_SKILLS.md) |