Fix: champs camelCase + anglais, contact data, nettoyage debug

- Blueprint site.yml : renommage en camelCase (contactEmail, contactAddress, socialLinks, legalNotices)
- Controller site.php : mentionsLegales() → legalNotices(), fix (string) casts pour la sérialisation JSON
- state/site.svelte.js : ajout champ contact
- Menu.svelte : nouveau composant dialog pour le menu overlay
- Header.svelte : intégration Menu, animation hamburger CSS
- router/index.js : suppression des console.log de debug

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

site/blueprints/site.yml

@@ -14,19 +14,19 @@ columns:
         status: listed
   - width: 1/2
     fields:
-      contact_email:
+      contactEmail:
         label: Email
         type: email
         width: 1/2
         translate: false
-      contact_address:
+      contactAddress:
         label: Adresse
         type: writer
         buttons: false
         nodes: false
         width: 1/2
         placeholder: 33 rue Jean Dupont
-      social_links:
+      socialLinks:
         label: Liens réseaux sociaux
         type: structure
         translate: false
@@ -55,7 +55,7 @@ columns:
       contact:
         type: fields
         fields:
-          mentions_legales:
+          legalNotices:
             label: Mentions légales (PDF)
             type: files
             max: 1

site/controllers/site.php

@@ -24,6 +24,18 @@ return function ($page, $kirby, $site) {
           'name' => $l->name()
         ];
       })->values(),
+      'contact' => [
+        'email'       => (string)$site->contactEmail()->value(),
+        'address'     => (string)$site->contactAddress()->value(),
+        'socials'     => $site->socialLinks()->toStructure()->map(function($item) {
+          return [
+            'label' => (string)$item->label()->value(),
+            'url'   => (string)$item->url()->value(),
+            'picto' => (string)$item->picto()->value(),
+          ];
+        })->values(),
+        'legalNotice' => $site->legalNotices()->toFile()?->url(),
+      ],
       'navigation' => $navPages->map(function($p) use ($kirby) {
         $titles = [];
         foreach ($kirby->languages() as $lang) {