v2 : moteurs purs complets + ambiances + persistance + seed Atelier du Canal

- engine/ : parametric (médiane basse, cristallisation, impact linear-share,
  bimodalité), state (canTransition 9 gardes doctrinales + windowOutcome),
  settings (resolveSettings + replis), triage (R-U→R6, phrases françaises),
  impact (concernés calculés), électionResult (blanc, quorum, égalité sans
  départage machine) — 296 tests vitest verts
- moods.css v2 : Source/Margelle/Nappe/Minuit (champ lexical du puits),
  tokens routes/états, socle borderless, print A4, tampon 井
- data/persistence.ts : IndexedDB local-first, export/import Bundle, lignée
- Seed Atelier du Canal (145 Ko, tous les états de l'UI) + test
- backend/scripts/export_seed_bundle.py (extraction Ğ1, bundle à générer)
- test anti-lexique (marqueur ld-v2)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

frontend/app/engine/settings.ts

@@ -0,0 +1,167 @@
+/**
+ * Pact settings resolution — the Pact IS the settings store (Δ10).
+ *
+ * resolveSettings() reads the Pact clauses that carry a settingKey, finds the
+ * 'current' ClauseVersion bearing a settingValue for each, and produces the
+ * resolved CollectiveSettings consumed by triage.ts and state.ts. Pure
+ * function — NOT a settings table: every threshold is a voted clause.
+ *
+ * Rules (BLUEPRINT-V2.md « Modèle de domaine » + Δ10):
+ * - any absent key falls back to SETTINGS_DEFAULTS;
+ * - invalid values (wrong type, negative number, unknown enum member) fall
+ *   back to the default SILENTLY — a corrupted Pact never crashes the engine;
+ * - any unresolved OPTIONAL protocolByRange key stays undefined: the caller
+ *   falls back to the consent protocol;
+ * - a missing 'protocols.consent' (corrupted bundle) still returns a full
+ *   settings object with protocolByRange.consent === '' — hasConsentProtocol()
+ *   lets the triage route 'advice' with the banner « Aucun protocole — crée-le
+ *   ou décide sur avis », NEVER a crash.
+ */
+
+import type {
+  Clause,
+  ClauseVersion,
+  CollectiveSettings,
+  Id,
+  InertiaPreset,
+  Json,
+} from '../types/domain'
+
+/** Default triage settings — used for every key the Pact does not resolve. */
+export const SETTINGS_DEFAULTS = {
+  smallGroupMax: 5,
+  collectiveMin: 50,
+  consentMax: 7,
+  objectionWindowHours: 48,
+  adviceWindowHours: 72,
+  framingDays: 14,
+  concernEscalateRatio: 0.5,
+  recurrenceThreshold: 3,
+  reviewDelayDays: 90,
+  requireEffects: 'binding',
+} as const satisfies CollectiveSettings['triage']
+
+const INERTIA_PRESETS: readonly InertiaPreset[] = ['low', 'standard', 'high', 'max']
+
+/** Most recent wins when a clause carries several 'current' versions (data anomaly). */
+function stampOf(version: ClauseVersion): string {
+  return version.adoptedAt ?? version.updatedAt
+}
+
+/** The settingValue of the clause's 'current' version, if any. */
+function currentValueOf(clause: Clause, versions: ClauseVersion[]): Json | undefined {
+  let best: ClauseVersion | undefined
+  for (const version of versions) {
+    if (version.clauseId !== clause.id || version.archivedAt) continue
+    if (version.status !== 'current' || version.settingValue === undefined) continue
+    if (!best || stampOf(version) > stampOf(best)) best = version
+  }
+  return best?.settingValue
+}
+
+/** First non-archived clause holding this settingKey with a resolvable current value. */
+function resolveRaw(key: string, clauses: Clause[], versions: ClauseVersion[]): Json | undefined {
+  for (const clause of clauses) {
+    if (clause.settingKey !== key || clause.archivedAt) continue
+    const value = currentValueOf(clause, versions)
+    if (value !== undefined) return value
+  }
+  return undefined
+}
+
+/** Wrong type or negative number ⇒ default, silently. */
+function numberOrDefault(value: Json | undefined, fallback: number): number {
+  return typeof value === 'number' && Number.isFinite(value) && value >= 0 ? value : fallback
+}
+
+/** Unknown enum member ⇒ default, silently. */
+function requireEffectsOrDefault(value: Json | undefined): 'none' | 'structural' | 'binding' {
+  return value === 'none' || value === 'structural' || value === 'binding'
+    ? value
+    : SETTINGS_DEFAULTS.requireEffects
+}
+
+/** Protocol ids must be non-empty strings — anything else counts as unresolved. */
+function idOrUndefined(value: Json | undefined): Id | undefined {
+  return typeof value === 'string' && value.trim().length > 0 ? value : undefined
+}
+
+/**
+ * Resolve the collective's settings from its Pact clauses.
+ *
+ * Recognized setting keys:
+ *   triage.smallGroupMax · triage.collectiveMin · triage.consentMax ·
+ *   triage.objectionWindowHours · triage.adviceWindowHours ·
+ *   triage.framingDays · triage.concernEscalateRatio ·
+ *   triage.recurrenceThreshold · triage.reviewDelayDays ·
+ *   triage.requireEffects · protocols.consent · protocols.nuanced ·
+ *   protocols.large · protocols.parametric · protocols.election ·
+ *   protocols.clauseByInertia.{low,standard,high,max}
+ */
+export function resolveSettings(clauses: Clause[], versions: ClauseVersion[]): CollectiveSettings {
+  const raw = (key: string): Json | undefined => resolveRaw(key, clauses, versions)
+
+  const triage: CollectiveSettings['triage'] = {
+    smallGroupMax: numberOrDefault(raw('triage.smallGroupMax'), SETTINGS_DEFAULTS.smallGroupMax),
+    collectiveMin: numberOrDefault(raw('triage.collectiveMin'), SETTINGS_DEFAULTS.collectiveMin),
+    consentMax: numberOrDefault(raw('triage.consentMax'), SETTINGS_DEFAULTS.consentMax),
+    objectionWindowHours: numberOrDefault(
+      raw('triage.objectionWindowHours'),
+      SETTINGS_DEFAULTS.objectionWindowHours,
+    ),
+    adviceWindowHours: numberOrDefault(
+      raw('triage.adviceWindowHours'),
+      SETTINGS_DEFAULTS.adviceWindowHours,
+    ),
+    framingDays: numberOrDefault(raw('triage.framingDays'), SETTINGS_DEFAULTS.framingDays),
+    concernEscalateRatio: numberOrDefault(
+      raw('triage.concernEscalateRatio'),
+      SETTINGS_DEFAULTS.concernEscalateRatio,
+    ),
+    recurrenceThreshold: numberOrDefault(
+      raw('triage.recurrenceThreshold'),
+      SETTINGS_DEFAULTS.recurrenceThreshold,
+    ),
+    reviewDelayDays: numberOrDefault(raw('triage.reviewDelayDays'), SETTINGS_DEFAULTS.reviewDelayDays),
+    requireEffects: requireEffectsOrDefault(raw('triage.requireEffects')),
+  }
+
+  // Consent is the MANDATORY invariant key. When unfindable (corrupted
+  // bundle), we still return a complete object with consent === '' so the
+  // caller can degrade gracefully (hasConsentProtocol) — never a crash.
+  const protocolByRange: CollectiveSettings['protocolByRange'] = {
+    consent: idOrUndefined(raw('protocols.consent')) ?? '',
+  }
+
+  const nuanced = idOrUndefined(raw('protocols.nuanced'))
+  if (nuanced) protocolByRange.nuanced = nuanced
+  const large = idOrUndefined(raw('protocols.large'))
+  if (large) protocolByRange.large = large
+  const parametric = idOrUndefined(raw('protocols.parametric'))
+  if (parametric) protocolByRange.parametric = parametric
+  const election = idOrUndefined(raw('protocols.election'))
+  if (election) protocolByRange.election = election
+
+  // The Ğ1 heritage lives here, intact: the map is exposed only when ALL four
+  // presets resolve (the type is a complete Record — a partial map would lie).
+  // Otherwise the caller falls back to consent, like any optional key.
+  const byInertia: Partial<Record<InertiaPreset, Id>> = {}
+  for (const preset of INERTIA_PRESETS) {
+    const id = idOrUndefined(raw(`protocols.clauseByInertia.${preset}`))
+    if (id) byInertia[preset] = id
+  }
+  if (INERTIA_PRESETS.every((preset) => byInertia[preset] !== undefined)) {
+    protocolByRange.clauseByInertia = byInertia as Record<InertiaPreset, Id>
+  }
+
+  return { triage, protocolByRange }
+}
+
+/**
+ * True when the collective has a resolvable consent protocol.
+ * False ⇒ the triage routes 'advice' with the banner
+ * « Aucun protocole — crée-le ou décide sur avis » — never a crash.
+ */
+export function hasConsentProtocol(settings: CollectiveSettings): boolean {
+  return settings.protocolByRange.consent.trim().length > 0
+}