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>

config/sync/image.style.large.yml

@@ -0,0 +1,23 @@
+uuid: 1c36ecbc-8d24-4be9-a4ac-895265a9d091
+langcode: en
+status: true
+dependencies: {  }
+_core:
+  default_config_hash: yrvYt4IlFH9AKX1vx-_N6OfeG_6HgylGP7hhB9AMH3k
+name: large
+label: 'Large (480×480)'
+effects:
+  ddd73aa7-4bd6-4c85-b600-bdf2b1628d1d:
+    uuid: ddd73aa7-4bd6-4c85-b600-bdf2b1628d1d
+    id: image_scale
+    weight: 0
+    data:
+      width: 480
+      height: 480
+      upscale: false
+  6e8fe467-84c1-4ef0-a73b-7eccf1cc20e8:
+    uuid: 6e8fe467-84c1-4ef0-a73b-7eccf1cc20e8
+    id: image_convert_avif
+    weight: 2
+    data:
+      extension: webp