From 235c2eb03f7275b19526faf1bca297b55ff278a0 Mon Sep 17 00:00:00 2001
From: Quintine <15965533+Quintine@users.noreply.github.com>
Date: Tue, 27 Oct 2026 23:53:13 +1100
Subject: [PATCH] Support Truthtrance on Atreides spice foresight

---
 components/mixed-shipment-fields.tsx          |  4 +-
 components/truthtrance-knowledge.tsx          | 25 +++++---
 docs/CURRENT_STATUS.md                        |  9 +++
 docs/IMPLEMENTATION_STATUS.md                 | 10 +++
 docs/RULE_DECISIONS.md                        |  9 +++
 docs/TRUTHTRANCE_KNOWLEDGE.md                 | 22 +++++++
 game/reference.ts                             | 11 ++--
 game/truthtrance-knowledge.ts                 | 32 +++++++++-
 tests/truthtrance-knowledge-controls.test.tsx | 29 ++++++++-
 .../truthtrance-spice-peek-knowledge.test.ts  | 59 ++++++++++++++++++
 tests/truthtrance-spice-peek-runtime.test.ts  | 61 +++++++++++++++++++
 11 files changed, 255 insertions(+), 16 deletions(-)
 create mode 100644 tests/truthtrance-spice-peek-knowledge.test.ts
 create mode 100644 tests/truthtrance-spice-peek-runtime.test.ts

diff --git a/components/mixed-shipment-fields.tsx b/components/mixed-shipment-fields.tsx
index 07fc6496..b5c755fb 100644
--- a/components/mixed-shipment-fields.tsx
+++ b/components/mixed-shipment-fields.tsx
@@ -65,6 +65,7 @@ export function TruthFactFields({ value: fact, game, target, onChange }: {
     predictionTurn: { kind: 'prediction', field: 'turn', compare: 'gte', value: 1 },
     stormDial: { kind: 'stormDial', compare: 'gte', value: 0 },
     stormForecast: { kind: 'stormForecast', compare: 'gte', value: 1 },
+    spicePeek: { kind: 'spicePeek', value: 'worm' },
     spice: { kind: 'spice', compare: 'gte', value: 6 },
     forceCount: { kind: 'forceCount', zone: { kind: 'reserves' }, counter: 'total', compare: 'gte', value: 6 },
     noFieldValue: { kind: 'noFieldValue', value: 3 },
@@ -83,6 +84,7 @@ export function TruthFactFields({ value: fact, game, target, onChange }: {
         <option value="predictionTurn">Stored turn prediction</option>
         <option value="stormDial">Known storm dial</option>
         <option value="stormForecast">Known storm forecast</option>
+        <option value="spicePeek">Known next Spice Blow card</option>
         <option value="spice">Current personal spice</option>
         <option value="forceCount">Current physical forces</option>
         <option value="noFieldValue">Current concealed No-Field printed value</option>
@@ -98,7 +100,7 @@ export function TruthFactFields({ value: fact, game, target, onChange }: {
         <FaceDancerFactFields value={fact} leaders={game.allLeaders} onChange={onChange} /> : fact.kind === 'noFieldValue' ?
         <NoFieldValueFields value={fact} onChange={onChange} /> : fact.kind === 'forceCount' ?
           <ForceCountFields value={fact} game={game} player={game.players.find(player => player.id === target)!} onChange={onChange} /> :
-        fact.kind === 'prediction' || fact.kind === 'stormDial' || fact.kind === 'stormForecast' ?
+        fact.kind === 'prediction' || fact.kind === 'stormDial' || fact.kind === 'stormForecast' || fact.kind === 'spicePeek' ?
           <KnowledgeFactFields value={fact} onChange={onChange} /> : fact.kind === 'spice' ? <>
             <label>
               Compare current personal spice
diff --git a/components/truthtrance-knowledge.tsx b/components/truthtrance-knowledge.tsx
index 6877f3eb..77091779 100644
--- a/components/truthtrance-knowledge.tsx
+++ b/components/truthtrance-knowledge.tsx
@@ -2,14 +2,13 @@
 
 import { useId } from 'react';
 import { FACTIONS } from '@/game/catalog';
-import type { TruthFact } from '@/game/truthtrance';
-import { knowledgeFactInputError } from '@/game/truthtrance-knowledge';
+import { territory } from '@/game/board';
+import { knowledgeFactInputError, SPICE_PEEK_VALUES, type KnowledgeFact } from '@/game/truthtrance-knowledge';
 import { Input } from '@/components/ui/input';
 
-type KnowledgeFact = Extract<TruthFact, { kind: 'prediction' | 'stormDial' | 'stormForecast' }>;
-type NumericKnowledgeFact = Exclude<KnowledgeFact, { kind: 'prediction'; field: 'faction' }>;
+type NumericKnowledgeFact = Exclude<KnowledgeFact, { kind: 'prediction'; field: 'faction' } | { kind: 'spicePeek' }>;
 function isNumericKnowledgeFact(fact: KnowledgeFact): fact is NumericKnowledgeFact {
-  return fact.kind !== 'prediction' || fact.field === 'turn';
+  return fact.kind !== 'spicePeek' && (fact.kind !== 'prediction' || fact.field === 'turn');
 }
 
 export function KnowledgeFactFields({
@@ -20,7 +19,7 @@ export function KnowledgeFactFields({
   onChange: (fact: KnowledgeFact) => void;
 }) {
   const id = useId();
-  const isFaction = !isNumericKnowledgeFact(value);
+  const isFaction = value.kind === 'prediction' && value.field === 'faction';
   const numericValue = isNumericKnowledgeFact(value) ? value : null;
   const isTurn = numericValue?.kind === 'prediction' && numericValue.field === 'turn';
   const min = isTurn ? 1 : numericValue?.kind === 'stormForecast' ? 1 : 0;
@@ -28,7 +27,19 @@ export function KnowledgeFactFields({
   const invalid = knowledgeFactInputError(value);
   return (
     <>
-      {isFaction ? (
+      {value.kind === 'spicePeek' ? (
+        <>
+          <label>
+            Next Spice Blow card
+            <select value={value.value} onChange={(event) => onChange({ kind: 'spicePeek', value: event.target.value })}>
+              {SPICE_PEEK_VALUES.map((option) => <option key={option} value={option}>
+                {option === 'worm' ? 'Sandworm' : option === 'sandtrout' ? 'Sandtrout' : territory(option).name}
+              </option>)}
+            </select>
+          </label>
+          <p className="fine">This asks about the card the target currently knows from their private Spice Blow peek. If no card is known, the answer is I don’t know. Only the answer is published.</p>
+        </>
+      ) : isFaction ? (
         <label>
           Predicted faction
           <select
diff --git a/docs/CURRENT_STATUS.md b/docs/CURRENT_STATUS.md
index 22e861dc..45fb26a1 100644
--- a/docs/CURRENT_STATUS.md
+++ b/docs/CURRENT_STATUS.md
@@ -16,6 +16,15 @@ open mode gates.
 
 
 ## Current checkpoint and work
+**Truthtrance and Atreides Spice Blow knowledge — 27 October. Prototyped /
+Partial.** A structured question can compare the currently known next Spice
+Card with a printed location, sandworm or Sandtrout. Only Atreides' active,
+uncanceled peek yields a definite answer. Single/compound controls, private
+answer and existing legal bots are connected. Five focused files pass 24 cases,
+including real Basic/Advanced progression through the native peek; a canceled
+peek is staged separately. Arbitrary questions, broader interactions and
+deployed acceptance remain open. [Scope](TRUTHTRANCE_KNOWLEDGE.md#atreides-spice-blow-knowledge--27-october-2026).
+
 **Two people, four factions — 27 October. Prototyped / Partial.** Each person
 can add a separately authenticated second faction and switch its private view
 and actions. Exactly two controllers with two seats each are required to start;
diff --git a/docs/IMPLEMENTATION_STATUS.md b/docs/IMPLEMENTATION_STATUS.md
index 8922803d..f2e4d38d 100644
--- a/docs/IMPLEMENTATION_STATUS.md
+++ b/docs/IMPLEMENTATION_STATUS.md
@@ -1,5 +1,15 @@
 # Dune implementation status
 
+## 27 October 2026 — Truthtrance and Atreides Spice Blow knowledge
+
+A single or compound structured question may ask whether the Spice Card
+currently known to Atreides is a named printed blow, a sandworm or Sandtrout.
+Only its active, uncanceled native peek yields a definite private answer.
+Focused controls, helpers and real Basic/Advanced question flow with all four
+legal bot answers pass 24 cases; the canceled-peek case is staged. General
+freeform enforcement, broader interactions and deployed acceptance remain open.
+[Scope](TRUTHTRANCE_KNOWLEDGE.md#atreides-spice-blow-knowledge--27-october-2026).
+
 ## 27 October 2026 — Two people, four factions
 
 The provisional setup maps two controllers to four independent faction seats,
diff --git a/docs/RULE_DECISIONS.md b/docs/RULE_DECISIONS.md
index 169ae1be..76fa3f3c 100644
--- a/docs/RULE_DECISIONS.md
+++ b/docs/RULE_DECISIONS.md
@@ -1,5 +1,14 @@
 # Rule decision index
 
+## Truthtrance and Atreides Spice Blow knowledge — 27 October 2026
+
+The publisher FAQ permits game-related yes/no and compound questions. The
+structured Spice Card fact reports only an active, successful native Atreides
+peek and does not forecast an unknown card. Matching a Discovery blow by its
+printed territory and treating unavailable knowledge as unknown are bounded
+software interpretations; arbitrary questions remain unfinished.
+[Scope](TRUTHTRANCE_KNOWLEDGE.md#atreides-spice-blow-knowledge--27-october-2026).
+
 ## Two people, two factions each — 27 October 2026
 
 The classic rulebook and the supplied Advanced revision permit two people to
diff --git a/docs/TRUTHTRANCE_KNOWLEDGE.md b/docs/TRUTHTRANCE_KNOWLEDGE.md
index 6000d1ef..e05ce4de 100644
--- a/docs/TRUTHTRANCE_KNOWLEDGE.md
+++ b/docs/TRUTHTRANCE_KNOWLEDGE.md
@@ -1,5 +1,27 @@
 # Truthtrance: recorded predictions and storm knowledge
 
+## Atreides Spice Blow knowledge — 27 October 2026
+
+**Prototyped / Partial.** The structured fact `{kind:'spicePeek', value}` asks
+whether Atreides' currently known next Spice Card is a sandworm, Sandtrout, or
+a blow naming one of the printed territories. A Discovery card at the named
+territory also matches that territory question. Only the native Atreides seat
+with an active, uncanceled Shipment and Movement peek receives a definite
+answer; an unavailable peek, another faction or an empty deck yields unknown.
+This reports existing knowledge rather than granting a forecast, looking at a
+future replacement card or promising a future outcome. Both single and
+compound controls use public face choices; the owner-only scalar, physical
+Truthtrance handling and four legal bot answer paths remain shared.
+
+The existing general [GF9 FAQ p. 8](https://www.gf9games.com/dune/wp-content/uploads/2020/11/Dune-FAQ-Nov-2020.pdf#page=8)
+permits game-related yes/no and combined questions. These particular selectors
+and entitlement boundaries are software interpretations, not a new printed
+restriction. Five focused files pass 24 cases; two runtime cases include real
+Basic/Advanced progression to the successful peek, actual asking and answering,
+all four bot profiles, a staged canceled-peek state and physical card custody.
+Full Truthtrance language, broader interactions and deployed acceptance remain
+open.
+
 14 September 2026. **Prototyped**, with **Partial** coverage. This extends the
 existing question flow with four typed predicates; freeform interpretation,
 general future commitments and complete mode acceptance remain unfinished.
diff --git a/game/reference.ts b/game/reference.ts
index e0ce73fd..20c911cc 100644
--- a/game/reference.ts
+++ b/game/reference.ts
@@ -3242,13 +3242,14 @@ export const RULE_TOPICS: RuleTopic[] = [
   },
   {
     id: 'truthtrance-knowledge',
-    title: 'Truthtrance: recorded predictions and storm knowledge',
+    title: 'Truthtrance: recorded predictions and private forecasts',
     category: 'Cards',
     coverage: 'Partial',
     developmentStage: 'Prototyped',
-    summary: 'Ask about the target’s recorded Bene Gesserit prediction, submitted storm dial or currently known Fremen storm card, with a single fact or an AND/OR combination.',
+    summary: 'Ask about a recorded prediction, submitted storm dial, Fremen forecast or Atreides Spice Blow peek, with a single fact or an AND/OR combination.',
     steps: [
       'Choose a recorded prediction faction, compare its turn, or compare the target’s current submitted storm dial or known Fremen forecast. Exactly, at least and at most are available for numeric facts.',
+      'Ask whether Atreides’ currently known next Spice Card is a sandworm, Sandtrout, or a blow at a named printed territory. If the peek was canceled or is no longer available, the answer is I don’t know.',
       'These questions describe a choice already recorded or information currently known. They do not require anyone to win on a future turn, change a choice, or make the storm move a promised distance.',
       'A missing prediction, an unsubmitted or expired storm dial, or an unknown forecast yields I don’t know. A forecast question never gives another faction the Fremen’s private knowledge.',
       'For a supported Basic dialer who has not submitted, the separate combined turn-action question can ask about their future exact choice; that is a commitment, not a fact about an already sealed dial.',
@@ -3257,11 +3258,11 @@ export const RULE_TOPICS: RuleTopic[] = [
     ],
     related: ['card-truthtrance', 'truthtrance-spice', 'privacy'],
     checklist: [
-      { area: 'Implementation', status: 'Partial', detail: 'Stored prediction and entitled current storm knowledge use shared three-valued fact evaluation; no future commitment or unknown deck lookup.', evidence: ['game/truthtrance-knowledge.ts', 'game/truthtrance.ts', 'game/engine.ts'] },
-      { area: 'Player controls', status: 'Partial', detail: 'Four fact choices, numeric comparisons, public faction names, bounded inputs and compound question previews.', evidence: ['components/truthtrance-knowledge.tsx', 'components/truthtrance.tsx'] },
+      { area: 'Implementation', status: 'Partial', detail: 'Stored prediction, entitled storm knowledge and an active Atreides Spice peek use shared three-valued fact evaluation; no future commitment or unentitled deck lookup.', evidence: ['game/truthtrance-knowledge.ts', 'game/truthtrance.ts', 'game/engine.ts'] },
+      { area: 'Player controls', status: 'Partial', detail: 'Five fact choices, numeric comparisons, public faction and Spice Card names, bounded inputs and compound question previews.', evidence: ['components/truthtrance-knowledge.tsx', 'components/mixed-shipment-fields.tsx'] },
       { area: 'AI', status: 'Partial', detail: 'All four profiles answer the owner-only verified scalar through the existing Truthtrance flow. Strategic question selection and freeform understanding remain incomplete.', evidence: ['game/bots.ts', 'tests/truthtrance-knowledge.test.ts'] },
       { area: 'Documentation', status: 'Partial', detail: 'Current-knowledge semantics, unknown cases and original FAQ authority are explicit.', evidence: ['docs/TRUTHTRANCE_KNOWLEDGE.md'] },
-      { area: 'Verification', status: 'Partial', detail: 'Focused rules, UI, compound privacy, bots, JSON and production SQLite restoration; broader Truthtrance acceptance remains open.', evidence: ['tests/truthtrance-knowledge.test.ts', 'tests/truthtrance-knowledge-controls.test.tsx', 'tests/truthtrance-knowledge-recovery.test.ts'] },
+      { area: 'Verification', status: 'Partial', detail: 'Focused rules, UI, native Atreides peek and all-profile answers; earlier storm cases include JSON and SQLite restoration. Broader Truthtrance acceptance remains open.', evidence: ['tests/truthtrance-knowledge.test.ts', 'tests/truthtrance-knowledge-controls.test.tsx', 'tests/truthtrance-spice-peek-runtime.test.ts', 'tests/truthtrance-knowledge-recovery.test.ts'] },
     ],
   },
   {
diff --git a/game/truthtrance-knowledge.ts b/game/truthtrance-knowledge.ts
index 7800cfcd..28e94ab5 100644
--- a/game/truthtrance-knowledge.ts
+++ b/game/truthtrance-knowledge.ts
@@ -1,10 +1,18 @@
 import { FACTIONS, type FactionId } from './catalog';
+import { SPICE_CARDS } from './cards';
+import { territory } from './board';
 import type { Game, Player } from './engine';
 
 type Comparison = 'eq' | 'gte' | 'lte';
+/** Publicly selectable identities; a territory names a blow, including a
+ * Discovery card at that same printed territory. No deck contents enter here. */
+export const SPICE_PEEK_VALUES: readonly string[] = [
+  'worm', 'sandtrout', ...SPICE_CARDS.map(([id]) => id),
+];
 export type KnowledgeFact =
   | { kind: 'prediction'; field: 'faction'; faction: FactionId }
   | { kind: 'prediction'; field: 'turn'; compare: Comparison; value: number }
+  | { kind: 'spicePeek'; value: string }
   | { kind: 'stormDial' | 'stormForecast'; compare: Comparison; value: number };
 
 /** Only values already chosen or actually known by this respondent. */
@@ -12,16 +20,20 @@ export type TruthKnowledge = {
   prediction: { faction: FactionId; turn: number } | null;
   stormDial: number | null;
   stormForecast: number | null;
+  spicePeek: string | null;
 };
 
 export function isKnowledgeFact(value: unknown): value is KnowledgeFact {
   if (!value || typeof value !== 'object') return false;
   const kind = (value as { kind?: unknown }).kind;
-  return kind === 'prediction' || kind === 'stormDial' || kind === 'stormForecast';
+  return kind === 'prediction' || kind === 'stormDial' || kind === 'stormForecast' || kind === 'spicePeek';
 }
 
 export function knowledgeFactInputError(value: unknown): string | null {
   if (!isKnowledgeFact(value)) return 'Choose a stored prediction, storm dial or known forecast.';
+  if (value.kind === 'spicePeek')
+    return typeof value.value === 'string' && SPICE_PEEK_VALUES.includes(value.value)
+      ? null : 'Choose a printed Spice Blow territory, a sandworm, or Sandtrout.';
   if (value.kind === 'prediction') {
     if (value.field === 'faction')
       return FACTIONS.some((faction) => faction.id === value.faction)
@@ -39,6 +51,7 @@ export function knowledgeFactInputError(value: unknown): string | null {
 export function parseKnowledgeFact(value: unknown): KnowledgeFact {
   const error = knowledgeFactInputError(value);
   if (error || !isKnowledgeFact(value)) throw new Error(error ?? 'Choose a valid private-knowledge question.');
+  if (value.kind === 'spicePeek') return { kind: value.kind, value: value.value };
   if (value.kind === 'prediction' && value.field === 'faction')
     return { kind: value.kind, field: value.field, faction: value.faction };
   if (value.kind === 'prediction')
@@ -47,10 +60,16 @@ export function parseKnowledgeFact(value: unknown): KnowledgeFact {
 }
 
 export function truthKnowledgeOf(
-  g: Pick<Game, 'phase' | 'turn' | 'advanced' | 'stormDials' | 'stormDialers' | 'stormCard' | 'stormCardKnown'>,
+  g: Pick<Game, 'phase' | 'turn' | 'advanced' | 'stormDials' | 'stormDialers' | 'stormCard' | 'stormCardKnown' | 'spicePeekKnown' | 'spiceDeck'>,
   p: Pick<Player, 'id' | 'faction' | 'prediction'>,
 ): TruthKnowledge {
   const dial = g.stormDials[p.id];
+  const peek = g.phase === 5 && p.faction === 'atreides' && g.spicePeekKnown
+    ? g.spiceDeck[0] : undefined;
+  const peekFace = peek && 'worm' in peek && peek.worm === true ? 'worm'
+    : peek && 'sandtrout' in peek && peek.sandtrout === true ? 'sandtrout'
+      : peek && 'territory' in peek && typeof peek.territory === 'string' && SPICE_PEEK_VALUES.includes(peek.territory)
+        ? peek.territory : null;
   return {
     prediction: p.faction === 'beneGesserit' && p.prediction
       ? { ...p.prediction } : null,
@@ -60,6 +79,7 @@ export function truthKnowledgeOf(
     stormForecast: p.faction === 'fremen' && g.advanced && g.stormCardKnown &&
       Number.isSafeInteger(g.stormCard) && g.stormCard! >= 1 && g.stormCard! <= 6
       ? g.stormCard : null,
+    spicePeek: peekFace,
   };
 }
 
@@ -70,6 +90,9 @@ export function knowledgeFactAnswer(
   const error = knowledgeFactInputError(fact);
   if (error) throw new Error(error);
   if (!knowledge) return 'unknown';
+  if (fact.kind === 'spicePeek')
+    return knowledge.spicePeek === null || knowledge.spicePeek === undefined ? 'unknown'
+      : knowledge.spicePeek === fact.value ? 'yes' : 'no';
   if (fact.kind === 'prediction' && fact.field === 'faction')
     return knowledge.prediction === null ? 'unknown'
       : knowledge.prediction.faction === fact.faction ? 'yes' : 'no';
@@ -81,6 +104,11 @@ export function knowledgeFactAnswer(
 }
 
 export function knowledgeFactText(fact: KnowledgeFact): string {
+  if (fact.kind === 'spicePeek') {
+    const face = fact.value === 'worm' ? 'a sandworm' : fact.value === 'sandtrout' ? 'Sandtrout'
+      : `a Spice Blow at ${territory(fact.value).name}`;
+    return `the next Spice Card currently known to you as Atreides is ${face}`;
+  }
   if (fact.kind === 'prediction' && fact.field === 'faction')
     return `your recorded Bene Gesserit prediction names ${FACTIONS.find((f) => f.id === fact.faction)!.name}`;
   const comparison = fact.compare === 'eq' ? 'exactly' : fact.compare === 'gte' ? 'at least' : 'at most';
diff --git a/tests/truthtrance-knowledge-controls.test.tsx b/tests/truthtrance-knowledge-controls.test.tsx
index 0bb4fc4b..e16e2ebd 100644
--- a/tests/truthtrance-knowledge-controls.test.tsx
+++ b/tests/truthtrance-knowledge-controls.test.tsx
@@ -3,10 +3,13 @@ import assert from 'node:assert/strict';
 import { createElement } from 'react';
 import { renderToStaticMarkup } from 'react-dom/server';
 import { KnowledgeFactFields } from '../components/truthtrance-knowledge';
+import { TruthFactFields } from '../components/mixed-shipment-fields';
+import { TruthFactExpressionFields } from '../components/truth-fact-expression-fields';
 import { knowledgeFactInputError } from '../game/truthtrance-knowledge';
+import { createGame, joinGame, newPlayer, viewGame } from '../game/engine';
 import type { TruthFact } from '../game/truthtrance';
 
-function markup(value: Extract<TruthFact, { kind: 'prediction' | 'stormDial' | 'stormForecast' }>) {
+function markup(value: Extract<TruthFact, { kind: 'prediction' | 'stormDial' | 'stormForecast' | 'spicePeek' }>) {
   return renderToStaticMarkup(createElement(KnowledgeFactFields, { value, onChange() {} }));
 }
 
@@ -33,6 +36,30 @@ void test('knowledge controls expose full public faction registry and bounded st
   assert.match(forecast, /If no such value is available/);
 });
 
+void test('spice peek controls offer public card identities with private-knowledge guidance', () => {
+  const markupText = markup({ kind: 'spicePeek', value: 'worm' });
+  assert.match(markupText, /value="worm"/);
+  assert.match(markupText, /Sandworm/);
+  assert.match(markupText, /value="sandtrout"/);
+  assert.match(markupText, /value="the_great_flat"/);
+  assert.match(markupText, /private Spice Blow peek/);
+  assert.match(markupText, /Only the answer is published/);
+});
+
+void test('standalone and compound fact editors both expose the spice peek question', () => {
+  const game = createGame('PEEKCONTROLS', newPlayer('a', 'Asker', 'emperor'));
+  joinGame(game, newPlayer('b', 'Target', 'atreides'));
+  const view = viewGame(game, 'a');
+  const fact: TruthFact = { kind: 'spicePeek', value: 'broken_land' };
+  const single = renderToStaticMarkup(createElement(TruthFactFields, { value: fact, game: view, target: 'b', onChange() {} }));
+  assert.match(single, /value="spicePeek" selected/);
+  assert.match(single, /value="broken_land" selected/);
+  const compound: TruthFact = { kind: 'and', terms: [fact, { kind: 'spice', compare: 'gte', value: 3 }] };
+  const grouped = renderToStaticMarkup(createElement(TruthFactExpressionFields, { value: compound, game: view, target: 'b', disabled: false, onChange() {} }));
+  assert.match(grouped, /Known next Spice Blow card/);
+  assert.match(grouped, /value="broken_land" selected/);
+});
+
 void test('knowledge helper rejects invalid stored bounds', () => {
   assert.ok(knowledgeFactInputError({ kind: 'prediction', field: 'turn', compare: 'eq', value: 0 }));
   assert.ok(knowledgeFactInputError({ kind: 'prediction', field: 'turn', compare: 'eq', value: 11 }));
diff --git a/tests/truthtrance-spice-peek-knowledge.test.ts b/tests/truthtrance-spice-peek-knowledge.test.ts
new file mode 100644
index 00000000..654dec52
--- /dev/null
+++ b/tests/truthtrance-spice-peek-knowledge.test.ts
@@ -0,0 +1,59 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { createGame, newPlayer } from '../game/engine';
+import { SPICE_CARDS } from '../game/cards';
+import { truthFactAnswer } from '../game/truthtrance';
+import {
+  SPICE_PEEK_VALUES, knowledgeFactAnswer, knowledgeFactText,
+  parseKnowledgeFact, truthKnowledgeOf,
+} from '../game/truthtrance-knowledge';
+
+void test('Spice knowledge questions accept only printed territories, worm and Sandtrout', () => {
+  assert.deepEqual(SPICE_PEEK_VALUES, ['worm', 'sandtrout', ...SPICE_CARDS.map(([id]) => id)]);
+  for (const value of SPICE_PEEK_VALUES)
+    assert.deepEqual(parseKnowledgeFact({ kind: 'spicePeek', value, extra: 'discarded' }), { kind: 'spicePeek', value });
+  for (const value of ['', 'arrakeen', 'unknown', 7, null, {}, ['worm']])
+    assert.throws(() => parseKnowledgeFact({ kind: 'spicePeek', value }));
+  assert.match(knowledgeFactText({ kind: 'spicePeek', value: 'worm' }), /sandworm/);
+  assert.match(knowledgeFactText({ kind: 'spicePeek', value: 'hagga_basin' }), /Hagga Basin/);
+});
+
+void test('only the Atreides respondent with a current successful peek can answer', () => {
+  const g = createGame('PEEKTEST', newPlayer('a', 'Atreides', 'atreides'));
+  const atreides = g.players[0];
+  const other = newPlayer('other', 'Other', 'guild');
+  g.phase = 5;
+  g.spicePeekKnown = true;
+  const fact = { kind: 'spicePeek', value: 'hagga_basin' } as const;
+  g.spiceDeck = [{ territory: 'hagga_basin', amount: 6, sector: 12 }];
+  assert.equal(knowledgeFactAnswer(fact, truthKnowledgeOf(g, atreides)), 'yes');
+  assert.equal(knowledgeFactAnswer({ kind: 'spicePeek', value: 'worm' }, truthKnowledgeOf(g, atreides)), 'no');
+  assert.equal(knowledgeFactAnswer(fact, truthKnowledgeOf(g, other)), 'unknown');
+  assert.equal(knowledgeFactAnswer(fact, truthKnowledgeOf({ ...g, spicePeekKnown: false }, atreides)), 'unknown');
+  assert.equal(knowledgeFactAnswer(fact, truthKnowledgeOf({ ...g, phase: 6 }, atreides)), 'unknown');
+  assert.equal(knowledgeFactAnswer(fact, truthKnowledgeOf({ ...g, spiceDeck: [] }, atreides)), 'unknown');
+  assert.equal(knowledgeFactAnswer(fact), 'unknown');
+
+  // Private deck access itself is fenced when this respondent is not entitled.
+  const hidden = { ...g, get spiceDeck(): never { throw new Error('Private deck read'); } };
+  assert.equal(truthKnowledgeOf(hidden, other).spicePeek, null);
+  hidden.phase = 6;
+  assert.equal(truthKnowledgeOf(hidden, atreides).spicePeek, null);
+});
+
+void test('worm, Sandtrout and discovery blows stay distinct and compose with other facts', () => {
+  const g = createGame('PEEKTEST', newPlayer('a', 'Atreides', 'atreides'));
+  const p = g.players[0];
+  Object.assign(g, { phase: 5, spicePeekKnown: true, spiceDeck: [{ worm: true }] });
+  const worm = { kind: 'spicePeek', value: 'worm' } as const;
+  assert.equal(knowledgeFactAnswer(worm, truthKnowledgeOf(g, p)), 'yes');
+  g.spiceDeck = [{ sandtrout: true }];
+  assert.equal(knowledgeFactAnswer(worm, truthKnowledgeOf(g, p)), 'no');
+  assert.equal(knowledgeFactAnswer({ kind: 'spicePeek', value: 'sandtrout' }, truthKnowledgeOf(g, p)), 'yes');
+  g.spiceDeck = [{ territory: 'hagga_basin', amount: 6, sector: 12, discovery: 'discovery-hagga-basin' }];
+  const knowledge = truthKnowledgeOf(g, p);
+  const blow = { kind: 'spicePeek', value: 'hagga_basin' } as const;
+  assert.equal(knowledgeFactAnswer(blow, knowledge), 'yes');
+  assert.equal(truthFactAnswer(p, { kind: 'and', terms: [blow, { kind: 'spice', compare: 'gte', value: 0 }] }, knowledge), 'yes');
+  assert.equal(truthFactAnswer(p, { kind: 'or', terms: [worm, { kind: 'spice', compare: 'gte', value: 0 }] }, knowledge), 'yes');
+});
diff --git a/tests/truthtrance-spice-peek-runtime.test.ts b/tests/truthtrance-spice-peek-runtime.test.ts
new file mode 100644
index 00000000..7edd4459
--- /dev/null
+++ b/tests/truthtrance-spice-peek-runtime.test.ts
@@ -0,0 +1,61 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { applyAction, viewGame } from '../game/engine';
+import { botActions } from '../game/bots';
+import { DIFFICULTIES } from '../game/bot-profiles';
+import { knowledgeGame, knowledgeBotActions, askKnowledge, knowledgePhysical, rejectKnowledge } from './truthtrance-knowledge-fixture';
+
+/** Native setup and phase progression; only the holder's Truthtrance acquisition
+ * is staged by knowledgeGame, with each physical card retained exactly once. */
+function withPeek(advanced = false) {
+  let g = knowledgeGame(advanced);
+  for (let n = 0; n < 300 && !(g.phase === 5 && g.spicePeekKnown && !g.response && !g.phaseOpening); n++) {
+    const candidate = g.players.flatMap(player => knowledgeBotActions(g, player.id)
+      .map(action => ({ id: player.id, action })))[0];
+    assert.ok(candidate, `Native progression needs a legal decision in phase ${g.phase}`);
+    g = applyAction(g, candidate.id, candidate.action);
+  }
+  assert.equal(g.phase, 5);
+  assert.equal(g.spicePeekKnown, true);
+  assert.ok(g.spiceDeck[0]);
+  return g;
+}
+
+void test('actual Atreides peek supplies a private Truthtrance answer and native AI continuation', () => {
+  for (const advanced of [false, true]) {
+    const initial = withPeek(advanced);
+    const card = initial.spiceDeck[0];
+    const value = 'territory' in card ? card.territory : 'worm' in card ? 'worm' : 'sandtrout';
+    const question = { kind: 'spicePeek' as const, value };
+    const g = askKnowledge(initial, 'o', question);
+    assert.equal(viewGame(g, 'o').truthAnswer, 'yes');
+    assert.deepEqual(viewGame(g, 'o').spicePeek, card);
+    for (const id of ['a', 'b', 'f']) {
+      assert.equal(viewGame(g, id).truthAnswer, null);
+      assert.equal(viewGame(g, id).spicePeek, null);
+    }
+    rejectKnowledge(g, 'o', { type: 'truthAnswer', answer: 'no' });
+    for (const difficulty of DIFFICULTIES) {
+      const view = viewGame(g, 'o');
+      view.players.find(player => player.id === 'o')!.bot = difficulty;
+      const actions = botActions(view);
+      assert.deepEqual(actions, [{ type: 'truthAnswer', answer: 'yes' }]);
+      const done = applyAction(g, 'o', actions[0]);
+      assert.equal(done.truthtrance, null);
+      assert.equal(done.truthHistory!.at(-1)!.answer, 'yes');
+      assert.deepEqual(done.spiceDeck[0], card);
+      assert.deepEqual(knowledgePhysical(done), knowledgePhysical(initial));
+    }
+  }
+});
+
+void test('a canceled peek yields unknown and retains the physical Truthtrance', () => {
+  const initial = withPeek();
+  initial.spicePeekKnown = false;
+  const g = askKnowledge(initial, 'o', { kind: 'spicePeek', value: 'worm' });
+  assert.equal(viewGame(g, 'o').truthAnswer, 'unknown');
+  rejectKnowledge(g, 'o', { type: 'truthAnswer', answer: 'yes' });
+  const done = applyAction(g, 'o', { type: 'truthAnswer', answer: 'unknown' });
+  assert.equal(done.truthtrance?.stage, 'unknown');
+  assert.deepEqual(knowledgePhysical(done), knowledgePhysical(initial));
+});