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_display.user.user.compact.yml

@@ -0,0 +1,31 @@
+uuid: f026d5cd-58c6-437d-b2d8-ee48fec6a2a2
+langcode: en
+status: true
+dependencies:
+  config:
+    - core.entity_view_mode.user.compact
+    - field.field.user.user.user_picture
+    - image.style.thumbnail
+  module:
+    - image
+    - user
+_core:
+  default_config_hash: l0SHKaTcmotRxHn_b46mtoCaIHxqgnhaT3uFH8a3c-I
+id: user.user.compact
+targetEntityType: user
+bundle: user
+mode: compact
+content:
+  user_picture:
+    type: image
+    label: hidden
+    settings:
+      image_link: content
+      image_style: thumbnail
+      image_loading:
+        attribute: lazy
+    third_party_settings: {  }
+    weight: 0
+    region: content
+hidden:
+  member_for: true