Feat: Livres blancs — nouveau template collection + livre blanc individuel

- Blueprints white-papers / white-paper (intro, cover, PDF, date)
- Templates PHP + JSON API (liste avec singleSlug, détail avec fileUrl)
- Route POST (:any)/(:any)/download pour le téléchargement gated
- Panel : entrée white-papers ajoutée au menu après blog
- collection.css : styles partagés extraits de Blog (collection-*)
- Blog.svelte : classes renommées blog-* → collection-*
- WhitePapers.svelte : vue liste, URLs dynamiques via data.uri
- WhitePaper.svelte : vue détail deux colonnes + formulaire de téléchargement
- i18n : clés white paper (label, form, consentement, statuts)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

site/blueprints/pages/white-paper.yml

@@ -0,0 +1,61 @@
+title: Livre blanc
+icon: file
+status:
+  draft:
+    label: Brouillon
+    text: Non visible
+  listed:
+    label: Publié
+    text: Visible publiquement
+tabs:
+  content:
+    label: Contenu
+    icon: text
+    columns:
+      main:
+        width: 2/3
+        sections:
+          header:
+            type: fields
+            fields:
+              intro:
+                label: Description courte
+                type: writer
+                nodes: false
+                marks:
+                  - bold
+                  - italic
+                  - link
+                maxlength: 200
+      sidebar:
+        width: 1/3
+        sections:
+          meta:
+            type: fields
+            fields:
+              published:
+                label: Date de publication
+                type: date
+                display: DD/MM/YYYY
+                required: true
+                default: today
+                translate: false
+              cover:
+                label: Image de couverture
+                type: files
+                layout: cards
+                max: 1
+                accept: image/*
+                translate: false
+                image:
+                  cover: true
+                  ratio: 3/4
+                uploads:
+                  template: image
+              downloadFile:
+                label: Fichier PDF
+                type: files
+                max: 1
+                accept: application/pdf
+                translate: false
+                help: Fichier téléchargé après soumission du formulaire

site/blueprints/pages/white-papers.yml

@@ -0,0 +1,43 @@
+title: Livres blancs
+icon: book
+status:
+  draft:
+    label: Brouillon
+    text: La page est accessible uniquement pour les éditeurs connectés
+  listed:
+    label: Public
+    text: La page est accessible par tout le monde
+tabs:
+  content:
+    label: Contenu
+    icon: text
+    sections:
+      content:
+        type: fields
+        fields:
+          intro:
+            type: writer
+            marks:
+              - bold
+              - italic
+              - green
+              - pixel
+              - underline
+              - strike
+              - clear
+              - link
+            nodes:
+              - heading
+            headings:
+              - 1
+            help: Section de texte centrée (optionnelle).
+      items:
+        label: Livres blancs
+        type: pages
+        layout: cards
+        sortBy: published desc
+        template: white-paper
+        image:
+          ratio: 3/4
+          cover: true
+        info: "{{ page.published.toDate('d/m/Y') }}"

site/config/config.php

@@ -11,4 +11,27 @@ return [
     ],
 
     'thumbs' => require __DIR__ . '/thumbs.php',
+
+    'routes' => [
+        [
+            'pattern' => ['(:any)/(:any)/download', 'en/(:any)/(:any)/download'],
+            'method'  => 'POST',
+            'action'  => function (string $parent, string $slug) {
+                $page = kirby()->page($parent . '/' . $slug);
+                if (!$page || $page->intendedTemplate()->name() !== 'white-paper') {
+                    http_response_code(404);
+                    header('Content-Type: application/json');
+                    echo json_encode(['error' => 'Not found']);
+                    exit;
+                }
+                // TODO: store/email form data ($kirby->request()->body())
+                header('Content-Type: application/json');
+                echo json_encode([
+                    'success' => true,
+                    'fileUrl' => $page->downloadFile()->toFile()?->url(),
+                ]);
+                exit;
+            }
+        ]
+    ],
 ];

site/config/menu.php

@@ -29,7 +29,8 @@ return [
     'portfolio' => menuItem('portfolio', 'Portfolio','images', 'pages/portfolio'),
     'jouer'     => menuItem('jouer',     'Jouer',    'play',   'pages/jouer'),
     'a-propos'  => menuItem('a-propos',  'À propos', 'users',  'pages/a-propos'),
-    'blog'      => menuItem('blog',      'Blog',     'text',   'pages/blog'),
+    'blog'         => menuItem('blog',         'Blog',          'text', 'pages/blog'),
+    'white-papers' => menuItem('livres-blancs', 'Livres blancs', 'book', 'pages/livres-blancs'),
     '-',
     'users',
     'system',

site/templates/white-paper.json.php

@@ -0,0 +1,13 @@
+<?php
+
+$specificData = [
+    'published'  => $page->published()->toDate('d/m/Y'),
+    'intro'      => $page->intro()->value(),
+    'cover'      => $page->cover()->toFile()?->url(),
+    'fileUrl'    => $page->downloadFile()->toFile()?->url(),
+];
+
+$pageData = array_merge($genericData, $specificData);
+
+header('Content-Type: application/json');
+echo json_encode($pageData);

site/templates/white-paper.php

@@ -0,0 +1,2 @@
+<?php snippet('header') ?>
+<?php snippet('footer') ?>

site/templates/white-papers.json.php

@@ -0,0 +1,26 @@
+<?php
+
+$items = $page->children()->listed()->sortBy('published', 'desc');
+
+$mapItem = function ($item) {
+    return [
+        'title'     => $item->title()->value(),
+        'slug'      => $item->slug(),
+        'published' => $item->published()->toDate('d/m/Y'),
+        'intro'     => $item->intro()->value(),
+        'cover'     => $item->cover()->toFile()?->url(),
+    ];
+};
+
+$singleSlug = $items->count() === 1 ? $items->first()->slug() : null;
+
+$specificData = [
+    'intro'      => $page->intro()->value(),
+    'items'      => $items->map($mapItem)->values(),
+    'singleSlug' => $singleSlug,
+];
+
+$pageData = array_merge($genericData, $specificData);
+
+header('Content-Type: application/json');
+echo json_encode($pageData);

site/templates/white-papers.php

@@ -0,0 +1,2 @@
+<?php snippet('header') ?>
+<?php snippet('footer') ?>