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.wide.yml

@@ -0,0 +1,23 @@
+uuid: d447a4d7-c9d9-4bb2-857c-3aa4cd2be581
+langcode: en
+status: true
+dependencies: {  }
+_core:
+  default_config_hash: vbPSqe3wbFSkaEY0zGy3NVpofBxcTZYrT6N2YPQX7nI
+name: wide
+label: 'Wide (1090)'
+effects:
+  09959c15-59ce-4f6d-90df-e2d7cf32bce5:
+    uuid: 09959c15-59ce-4f6d-90df-e2d7cf32bce5
+    id: image_scale
+    weight: 1
+    data:
+      width: 1090
+      height: null
+      upscale: false
+  294c5f76-42a4-43ce-82c2-81c2f4723da0:
+    uuid: 294c5f76-42a4-43ce-82c2-81c2f4723da0
+    id: image_convert_avif
+    weight: 2
+    data:
+      extension: webp