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/user.role.content_editor.yml

@@ -0,0 +1,35 @@
+uuid: 6e5d280b-fa39-470d-a3db-7ac6d47d5c2a
+langcode: en
+status: true
+dependencies:
+  config:
+    - taxonomy.vocabulary.tags
+  module:
+    - contextual
+    - file
+    - navigation
+    - node
+    - path
+    - system
+    - taxonomy
+_core:
+  default_config_hash: og55Zu0F-q-X8zG0Ohrls49zws6IrmmosZS-30Es8vw
+id: content_editor
+label: 'Content editor'
+weight: 2
+is_admin: false
+permissions:
+  - 'access administration pages'
+  - 'access content overview'
+  - 'access contextual links'
+  - 'access files overview'
+  - 'access navigation'
+  - 'administer url aliases'
+  - 'create terms in tags'
+  - 'create url aliases'
+  - 'delete own files'
+  - 'edit terms in tags'
+  - 'revert all revisions'
+  - 'view all revisions'
+  - 'view own unpublished content'
+  - 'view the administration theme'