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.extension.yml

@@ -0,0 +1,53 @@
+_core:
+  default_config_hash: 4GIX5Esnc_umpXUBj4IIocRX7Mt5fPhm4AgXfE3E56E
+module:
+  announcements_feed: 0
+  automated_cron: 0
+  big_pipe: 0
+  block: 0
+  block_content: 0
+  breakpoint: 0
+  ckeditor5: 0
+  config: 0
+  contextual: 0
+  datetime: 0
+  dblog: 0
+  dynamic_page_cache: 0
+  editor: 0
+  entity_reference_revisions: 0
+  field: 0
+  field_ui: 0
+  figli_compta_ledger: 0
+  file: 0
+  filter: 0
+  gin_toolbar: 0
+  help: 0
+  image: 0
+  jsonapi: 0
+  layout_builder: 0
+  layout_discovery: 0
+  link: 0
+  menu_link_content: 0
+  menu_ui: 0
+  mysql: 0
+  navigation: 0
+  node: 0
+  options: 0
+  page_cache: 0
+  path: 0
+  path_alias: 0
+  serialization: 0
+  system: 0
+  taxonomy: 0
+  text: 0
+  update: 0
+  user: 0
+  views_ui: 0
+  views: 10
+  paragraphs: 11
+  standard: 1000
+theme:
+  olivero: 0
+  claro: 0
+  gin: 0
+profile: standard