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/core.entity_view_mode.paragraph.preview.yml

@@ -0,0 +1,13 @@
+uuid: 38841a4f-3b48-4a89-b47a-e0cb22621c53
+langcode: en
+status: true
+dependencies:
+  module:
+    - paragraphs
+_core:
+  default_config_hash: h3BeHVei4Lnyqbkao3YiF4KqoY-DhRvUNfEgKG8Rgjg
+id: paragraph.preview
+label: Preview
+description: null
+targetEntityType: paragraph
+cache: true