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/chemin/CheminAlternatives.vue

@@ -0,0 +1,165 @@
+<script setup lang="ts">
+// « Je choisis autrement » — the permanent alternatives, each with its cost.
+// Weighting up is one tap; lightening REQUIRES a note and imposes a window.
+import type { ParamSpec, Verdict } from '~/types/domain'
+import { CHOOSE_OTHERWISE, PARAMETRIC_ALT, RECORD_HOW } from '~/lexicon'
+
+type AltKey = 'parametric' | 'record' | 'binary'
+
+const props = defineProps<{
+  alternatives: Verdict['alternatives']
+  parametricHint: boolean
+  chosen: AltKey | null
+  lightening: boolean
+  decidedHow: string
+  overrideNote: string
+  spec?: ParamSpec
+}>()
+
+const emit = defineEmits<{
+  (e: 'update:chosen', value: AltKey | null): void
+  (e: 'update:decidedHow' | 'update:overrideNote', value: string): void
+  (e: 'update:spec', value: ParamSpec): void
+}>()
+
+const open = ref(false)
+
+const keyed = computed(() =>
+  props.alternatives.map((alt) => ({
+    ...alt,
+    key: (alt.route === 'record'
+      ? 'record'
+      : alt.label === PARAMETRIC_ALT ? 'parametric' : 'binary') as AltKey,
+  })),
+)
+
+function pick(key: AltKey) {
+  emit('update:chosen', props.chosen === key ? null : key)
+}
+</script>
+
+<template>
+  <!-- ld-v2 -->
+  <section class="alt">
+    <button class="alt__toggle" type="button" @click="open = !open">
+      <UIcon :name="open ? 'i-lucide-chevron-down' : 'i-lucide-chevron-right'" />
+      <span>{{ CHOOSE_OTHERWISE }}</span>
+      <span v-if="chosen && !open" class="alt__chosen-hint">1 choix actif</span>
+    </button>
+
+    <div v-if="open" class="alt__body">
+      <div class="alt__list">
+        <button
+          v-for="alt in keyed"
+          :key="alt.key"
+          class="alt__item"
+          :class="{
+            'alt__item--on': chosen === alt.key,
+            'alt__item--hint': alt.key === 'parametric' && parametricHint,
+          }"
+          type="button"
+          @click="pick(alt.key)"
+        >
+          <span class="alt__label">{{ alt.label }}</span>
+          <span class="alt__cost">{{ alt.cost }}</span>
+        </button>
+      </div>
+
+      <div v-if="chosen === 'parametric'" class="alt__detail">
+        <CheminParamEditor
+          :model-value="spec"
+          @update:model-value="emit('update:spec', $event)"
+        />
+      </div>
+
+      <div v-else-if="chosen === 'record'" class="alt__detail">
+        <label class="alt__field">
+          <span>{{ RECORD_HOW }}</span>
+          <input
+            :value="decidedHow"
+            type="text"
+            placeholder="Décidé au café, comme d'habitude…"
+            @input="emit('update:decidedHow', ($event.target as HTMLInputElement).value)"
+          >
+        </label>
+      </div>
+
+      <div v-if="lightening" class="alt__lighten">
+        <p class="alt__lighten-mention">
+          <UIcon name="i-lucide-scale" />
+          Tu prends un chemin plus léger que celui du collectif : une fenêtre d'objection
+          de 48 h est imposée, et ta raison s'affiche.
+        </p>
+        <textarea
+          :value="overrideNote"
+          class="alt__note"
+          rows="2"
+          placeholder="Pourquoi alléger ? (obligatoire)"
+          @input="emit('update:overrideNote', ($event.target as HTMLTextAreaElement).value)"
+        />
+      </div>
+    </div>
+  </section>
+</template>
+
+<style scoped>
+.alt { display: flex; flex-direction: column; gap: 0.625rem; }
+.alt__toggle {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.4rem;
+  background: none;
+  padding: 0.375rem 0.25rem;
+  font-size: 0.9375rem;
+  font-weight: 700;
+  color: var(--mood-text-muted);
+  cursor: pointer;
+  align-self: flex-start;
+  border-radius: var(--r-input);
+}
+.alt__toggle:hover { color: var(--mood-text); }
+.alt__chosen-hint { font-size: 0.75rem; font-weight: 600; color: var(--mood-accent); }
+.alt__body { display: flex; flex-direction: column; gap: 0.75rem; }
+.alt__list { display: flex; flex-direction: column; gap: 0.5rem; }
+.alt__item {
+  display: flex;
+  flex-direction: column;
+  align-items: flex-start;
+  gap: 0.2rem;
+  padding: 0.625rem 0.875rem;
+  border-radius: var(--r-icon);
+  background: var(--mood-input-bg);
+  cursor: pointer;
+  text-align: left;
+  transition: transform 0.1s ease;
+}
+.alt__item:hover { transform: translateY(-1px); }
+.alt__item--hint { box-shadow: 0 0 0 1.5px color-mix(in srgb, var(--mood-accent) 55%, transparent); }
+.alt__item--on {
+  background: var(--mood-accent-soft);
+  box-shadow: 0 0 0 2px var(--mood-accent);
+}
+.alt__label { font-size: 0.9063rem; font-weight: 700; color: var(--mood-text); }
+.alt__cost { font-size: 0.8125rem; font-style: italic; color: var(--mood-text-muted); }
+.alt__detail { padding-left: 0.25rem; }
+.alt__field { display: flex; flex-direction: column; gap: 0.35rem; font-size: 0.875rem; font-weight: 700; }
+.alt__field input { padding: 0.625rem 0.75rem; font-size: 0.9375rem; width: 100%; }
+.alt__lighten {
+  display: flex;
+  flex-direction: column;
+  gap: 0.5rem;
+  padding: 0.75rem;
+  border-radius: var(--r-input);
+  background: var(--mood-status-fenetre-bg);
+}
+.alt__lighten-mention {
+  display: flex;
+  align-items: flex-start;
+  gap: 0.4rem;
+  margin: 0;
+  font-size: 0.8125rem;
+  font-weight: 600;
+  color: var(--mood-status-fenetre);
+}
+.alt__note { width: 100%; padding: 0.625rem 0.75rem; font-size: 0.9375rem; resize: vertical; }
+</style>