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/file.settings.yml

@@ -0,0 +1,15 @@
+_core:
+  default_config_hash: 2bwjZB1IjEYbppgZT3g7YW_5h_LDZYNa3DaDEfWX82U
+description:
+  type: textfield
+  length: 128
+icon:
+  directory: core/modules/file/icons
+make_unused_managed_files_temporary: false
+filename_sanitization:
+  transliterate: false
+  replace_whitespace: false
+  replace_non_alphanumeric: false
+  deduplicate_separators: false
+  lowercase: false
+  replacement_character: '-'