Initial Drupal site: content model + validation + Vue dashboard

- Content type "Ligne comptable" with Paragraphs "Répartition" (Compte + Montant)
- Taxonomies: Compte (9 comptes) and Client (unified client list)
- hook_node_presave + form validate: sum(répartition) must equal montant HT
- /dashboard route (progressive decoupling): Vue 3 app fetching JSON:API,
  computing solde par compte / par client client-side
- "Ajouter une ligne" opens the real Drupal node form in an AJAX modal
- Gin as default + admin theme
- 9 opening-balance lines seeded from suivi_compta_SASFigli2026_v2.ods

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

web/modules/custom/figli_compta_ledger/templates/figli-compta-dashboard.html.twig

@@ -0,0 +1,42 @@
+{#
+  Dashboard shell: Drupal renders the page (nav, auth, permissions).
+  dashboard.js (a Vue 3 app) fetches JSON:API and renders everything below,
+  client-side. "Ajouter une ligne" opens the real Drupal node form in a
+  modal (core/drupal.dialog.ajax) -- no form logic duplicated in JS.
+
+  {% verbatim %} below: this is Vue template syntax, not Twig -- both use
+  {{ }}, so verbatim tells Twig to leave it alone and let Vue compile it
+  in the browser.
+#}
+{% verbatim %}
+<div id="figli-dashboard-app">
+  <p>
+    <a href="/node/add/ligne_comptable" class="button button--primary" @click.prevent="openAddForm">+ Ajouter une ligne</a>
+  </p>
+  <p v-if="loading">Chargement des données…</p>
+  <p v-else-if="error" class="figli-error">Erreur de chargement du tableau de bord : {{ error }}</p>
+  <template v-else>
+    <section v-for="table in tables" :key="table.title">
+      <h2>{{ table.title }}</h2>
+      <p class="figli-note" v-if="table.note">{{ table.note }}</p>
+      <table>
+        <thead><tr><th></th><th>Entrées (+)</th><th>Sorties (-)</th><th>Solde</th></tr></thead>
+        <tbody>
+          <tr v-for="row in table.rows" :key="row.name" :class="rowClass(row.solde)">
+            <td>{{ row.name }}</td>
+            <td class="amount">{{ formatEur(row.entrees) }}</td>
+            <td class="amount">{{ formatEur(row.sorties) }}</td>
+            <td class="amount">{{ formatEur(row.solde) }}</td>
+          </tr>
+          <tr class="total">
+            <td>TOTAL</td>
+            <td class="amount">{{ formatEur(table.totals.entrees) }}</td>
+            <td class="amount">{{ formatEur(table.totals.sorties) }}</td>
+            <td class="amount">{{ formatEur(table.totals.solde) }}</td>
+          </tr>
+        </tbody>
+      </table>
+    </section>
+  </template>
+</div>
+{% endverbatim %}