Prototype Moritani Assassinate Leaders with saved Mentat replacement

Connect a qualifying native Advanced Moritani battle loss to private reveal/continue controls, live or already-dead opposing-faction targets, printed-strength bank bounty, and automatic Mentat replacement. Keep the revealed physical card held until Mentat, then set it aside as a public per-faction use marker and draw one private card. All four AI profiles use the owner-only legal quote. New local preview profile supports genuine setup without opening public starts.

Keep unresolved normal traitor-call duration and uniform private no-choice UX explicit. Record normal calls and guard later use without claiming a settled permanent loss. Exclude exceptional captured/foreign leader custody, other expansion factions and combined optional modules from this bounded preview. No mode or publication gate opens.

Independent source/privacy/persistence review and 32 focused cases pass. Battle obligations independently bind cleanup, sealed normal-call logs wait for public revelation, physical replacement custody rejects missing cards and forged same-turn chains, and invalid actions remain immutable. Five authenticated SQLite cases cover pending/resolved restoration, Truthtrance interruption, competing submissions, stale/duplicate actions and corrupt saves. The local writer preserves seats and unrelated rooms.

Validation: types, lint, 4690 offline tests, production build and 43 HTTP tests passed with unchanged source. Two genuine Advanced four-profile games finish in 296 and 101 actions with zero rejected candidates, ten periodic JSON rounds and eight restored final seat views. All physical cards, forces and elites remain conserved. Two observed assassination opportunities are declined; these complete games do not establish natural reveal/replacement use.

The separate browser exercise explicitly stages conserved battle forces and one physical traitor swap after genuine setup. Actual battle actions open the choice. Master Bewt dies once and pays three spice; the card remains held through cleanup and is automatically replaced at Mentat with a public set-aside marker. Pending and resolved refresh, readable context-correct inspectors, physical custody and private projection pass. Guild independently collects two spice from Arrakeen. The saved QA game remains at human Terror placement.

After the reported outage, all 801 opening games and original seat/recovery records are preserved (835 after HTTP checks). All 802 rooms and original records immediately before verification also remain unchanged. Database integrity and foreign keys pass. The healthy server was reused without restart, reset or recurring automation.

Verified source tree: ad64f6775fb4c481002cc5eccf6d31e490085d11e10b7b19fb7df4947bcf0ccd

docs/RULE_DECISIONS.md

@@ -20,6 +20,7 @@ Updated 14 September 2026. This is the authoritative navigation index for existi
 | Guild payment | Rate, transport permission and income are distinct; power owner, shipper, contributors and independent rate-card beneficiary remain distinct. | [Rate/cancellation sources](GUILD_RATE_KARAMA_RULES.md), [implemented payment routing](GUILD_SHIPMENT_PAYMENTS.md) |
 | Truthtrance | Current facts are boolean disclosures, not promises to preserve resources. Structured Basic and base Advanced active-opportunity shipment promises bind within their documented scope (Advanced excludes Guild and optional modules); prose is not automatically enforced. | [Spice facts](TRUTHTRANCE_SPICE_FACTS.md), [card facts](TRUTHTRANCE_CARD_COUNT.md), [shipment promises](TRUTHTRANCE_SHIPMENT_PROMISES.md), [remaining audit](TRUTHTRANCE_NONBATTLE_READINESS_20260907.md) |
 | Truthtrance hand categories | Count current physical hand custody by explicitly named primary role; alternate battle slots and faction powers do not reclassify cards. Only an aggregate answer is disclosed. | [Hand inventory](TRUTHTRANCE_HAND_INVENTORY.md) |
+| Moritani Advanced assassination preview | After an eligible battle loss, a different opposing-faction Traitor Card may be revealed even if its leader is already dead (zero bounty). Face-up set-aside and one private replacement occur during Mentat; one use per faction. Normal-call duration, uniform hidden-eligibility UX and exceptional combinations remain explicit. | [Runtime/source contract](MORITANI_ASSASSINATE_LEADERS.md) |
 | Truthtrance recorded knowledge | Questions compare an already recorded BG prediction, active submitted storm dial or actually known native Fremen forecast. Missing knowledge is unknown; only the aggregate answer is published. No future promise or unknown deck peek is created. | [Connected predicates and evidence](TRUTHTRANCE_KNOWLEDGE.md) |
 | Nexus lifecycle | Twelve physical cards, phase draw/replacement and alliance forfeiture; native Cunning, absent-faction Secret Ally and Betrayal have separate effects. No blanket Karama immunity. | [Common source contract](NEXUS_CARD_RULES.md), [lifecycle runtime](NEXUS_CARD_RUNTIME.md) |
 | Nexus faction effects | Preserve physical custody, original faction identity and durable effect receipts; use each printed family instead of borrowing another faction's rules by analogy. | [Atreides](NEXUS_ATREIDES_RULES.md), [Harkonnen](NEXUS_HARKONNEN_RULES.md), [BG](NEXUS_BENE_GESSERIT_RULES.md), [Emperor](NEXUS_EMPEROR_RULES.md), [Fremen](NEXUS_FREMEN_RULES.md), [Guild](NEXUS_GUILD_RULES.md) |