v3 : socle Rust (moteur pur, accès trustinWallet, serveur) ; maquette Nuxt rangée dans maquette/

- crates/ld-engine : formule inertielle (parité avec la maquette, garde C),
  coquille / changement de fond, assistant d'édition à règles, composition
  d'un document sous vote permanent (adoptions, aperçus, rivales).
- crates/trustin-access : qui voit, qui ouvre, qui gère les accès.
- crates/ld-server : API axum + SQLite, connexion Ğ1 (client OAuth2 de
  connect.monnaie-libre.fr), invitations, entrée en vigueur automatique,
  signalements de contradiction, traductions éditoriales, publication git,
  taille de la toile lue sur la chaîne.
- seeds/acte-engagement-certification.json : 33 articles, fr + en + es ;
  en vigueur : préambule, E1, E2 (seed a minima).
- maquette/ : frontend, backend et docker v2 déplacés tels quels.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

maquette/frontend/app/components/decisions/DecisionChain.vue

@@ -0,0 +1,101 @@
+<script setup lang="ts">
+// <!-- ld-v2 --> Chain block: clickable parent and children with their chain
+// kind in plain French (ratification / révision / révocation / élément).
+import type { Decision } from '~/types/domain'
+import { STATUS_LABELS } from '~/lexicon'
+import { useCollectiveStore } from '~/stores/collective'
+import { CHAIN_LABELS } from './decisionUi'
+
+const props = defineProps<{ decision: Decision }>()
+
+const col = useCollectiveStore()
+
+const parent = computed(() =>
+  props.decision.parentDecisionId
+    ? col.decisions.find(d => d.id === props.decision.parentDecisionId)
+    : undefined)
+
+const parentLabel = computed(() =>
+  props.decision.chainKind
+    ? `${CHAIN_LABELS[props.decision.chainKind]} de`
+    : 'liée à')
+
+const children = computed(() =>
+  col.decisions
+    .filter(d => d.parentDecisionId === props.decision.id)
+    .map(d => ({
+      ...d,
+      kindLabel: d.chainKind ? CHAIN_LABELS[d.chainKind] : 'liée',
+    })))
+
+const hasChain = computed(() => parent.value !== undefined || children.value.length > 0)
+</script>
+
+<template>
+  <!-- ld-v2 -->
+  <section v-if="hasChain" class="chain">
+    <h2 class="chain__title">Chaînage</h2>
+
+    <NuxtLink
+      v-if="parent"
+      :to="`/decisions/${parent.id}`"
+      class="chain__link"
+    >
+      <UIcon name="i-lucide-corner-left-up" />
+      <span class="chain__kind">{{ parentLabel }}</span>
+      <span class="chain__name">{{ parent.title }}</span>
+      <span class="status-pill" :class="`status-${parent.status}`">
+        {{ STATUS_LABELS[parent.status] }}
+      </span>
+    </NuxtLink>
+
+    <NuxtLink
+      v-for="child in children"
+      :key="child.id"
+      :to="`/decisions/${child.id}`"
+      class="chain__link"
+    >
+      <UIcon name="i-lucide-corner-down-right" />
+      <span class="chain__kind">{{ child.kindLabel }}</span>
+      <span class="chain__name">{{ child.title }}</span>
+      <span class="status-pill" :class="`status-${child.status}`">
+        {{ STATUS_LABELS[child.status] }}
+      </span>
+    </NuxtLink>
+  </section>
+</template>
+
+<style scoped>
+.chain { display: flex; flex-direction: column; gap: 0.5rem; }
+.chain__title {
+  margin: 0 0 0.25rem;
+  font-size: 1.0625rem;
+  font-weight: 800;
+  letter-spacing: -0.01em;
+}
+.chain__link {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+  gap: 0.5rem;
+  padding: 0.625rem 0.875rem;
+  border-radius: var(--r-input);
+  background: var(--mood-accent-soft);
+  color: var(--mood-text);
+  text-decoration: none;
+  transition: transform 0.1s ease;
+}
+.chain__link:hover { transform: translateY(-1px); }
+.chain__kind {
+  font-size: 0.8125rem;
+  font-weight: 700;
+  color: var(--mood-accent);
+  text-transform: none;
+}
+.chain__name {
+  font-size: 0.9375rem;
+  font-weight: 600;
+  flex: 1;
+  min-width: 10rem;
+}
+</style>