feat: intégration plugin Kirby SEO

- Ajout de tobimori/kirby-seo via Composer
- snippet('seo/head') dans header.php (remplace les meta manuels)
- snippet('seo/schemas') dans footer.php pour JSON-LD
- Onglet SEO ajouté dans site.yml et tous les blueprints de pages
- Configuration SEO dans config.php (sitemap, robots, canonicalBase TODO)

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

site/plugins/kirby-seo/config/options.php

@@ -0,0 +1,112 @@
+<?php
+
+use Kirby\Cms\App;
+use Kirby\Cms\Page;
+use Kirby\Data\Json;
+use tobimori\Seo\Meta;
+use tobimori\Seo\Seo;
+use tobimori\Seo\Ai;
+use tobimori\Seo\IndexNow;
+use tobimori\Seo\SchemaSingleton;
+use tobimori\Seo\GoogleSearchConsole;
+
+return [
+	// if you want to extend some of the built-in classes, you can overwrite them using the components config option
+	// and page methods or similar stuff will adapt. full customizability!
+	'components' => [
+		'meta' => Meta::class,
+		'ai' => Ai::class,
+		'indexnow' => IndexNow::class,
+		'schema' => SchemaSingleton::class,
+		'gsc' => GoogleSearchConsole::class,
+	],
+	'cache.searchConsole' => true,
+	'cache.indexnow' => true,
+	'cascade' => [
+		'fields',
+		'programmatic',
+		'parent',
+		'fallbackFields',
+		'site',
+		'options'
+	],
+	'default' => [ // default field values for metadata, format is [field => value]
+		'metaTitle' => fn (Page $page) => $page->title(),
+		'metaTemplate' => '{{ title }} - {{ site.title }}',
+		'ogTemplate' => '{{ title }}',
+		'ogSiteName' => fn (Page $page) => $page->site()->title(),
+		'ogType' => 'website',
+		'ogDescription' => fn (Page $page) => $page->metadata()->metaDescription(),
+		'cropOgImage' => true,
+		'locale' => fn (Page $page) => $page->kirby()->language()?->locale(LC_ALL) ?? Seo::option('locale', 'en_US'),
+		// default for robots: noIndex if global index configuration is set, otherwise fall back to page status
+		'robotsIndex' => function (Page $page) {
+			$index = Seo::option('robots.index');
+			if (!$index) {
+				return false;
+			}
+
+			return Seo::option('robots.followPageStatus') ? $page->isListed() : true;
+		},
+		'robotsFollow' => fn (Page $page) => $page->kirby()->option('tobimori.seo.default.robotsIndex')($page),
+		'robotsArchive' => fn (Page $page) => $page->kirby()->option('tobimori.seo.default.robotsIndex')($page),
+		'robotsImageindex' => fn (Page $page) => $page->kirby()->option('tobimori.seo.default.robotsIndex')($page),
+		'robotsSnippet' => fn (Page $page) => $page->kirby()->option('tobimori.seo.default.robotsIndex')($page),
+	],
+	'socialMedia' => [ // default fields for social media links, format is [field => placeholder]
+		'twitter' => 'https://twitter.com/my-company',
+		'facebook' => 'https://facebook.com/my-company',
+		'instagram' => 'https://instagram.com/my-company',
+		'youtube' => 'https://youtube.com/channel/my-company',
+		'linkedin' => 'https://linkedin.com/company/my-company',
+		'bluesky' => 'https://bsky.app/profile/example.bsky.social',
+		'mastodon' => 'https://mastodon.social/@example'
+	],
+	'previews' => [
+		'google',
+		'facebook',
+		'slack'
+	],
+	'robots' => [
+		'enabled' => true, // whether robots handling should be done by the plugin
+
+		// @deprecated - please use robots.enabled
+		'active' => fn () => Seo::option('sitemap.enabled'),
+		'followPageStatus' => true, // should unlisted pages be noindex by default?
+		'pageSettings' => true, // whether to have robots settings on each page
+		'index' => fn () => !App::instance()->option('debug'), // default site-wide robots setting
+		'sitemap' => null, // sets sitemap url, will be replaced by plugin sitemap in the future
+		'content' => [], // custom robots content
+		'types' => ['index', 'follow', 'archive', 'imageindex', 'snippet'] // available robots types
+	],
+	'sitemap' => [
+		'enabled' => true,
+		// @deprecated - please use sitemap.enabled
+		'active' => fn () => Seo::option('sitemap.enabled'),
+		'redirect' => true, // redirect /sitemap to /sitemap.xml
+		'locale' => 'en',
+		'generator' => require __DIR__ . '/options/sitemap.php',
+		'changefreq' => 'weekly',
+		'groupByTemplate' => false,
+		'excludeTemplates' => ['error'],
+		'priority' => fn (Page $page) => number_format(($page->isHomePage()) ? 1 : max(1 - 0.2 * $page->depth(), 0.2), 1),
+	],
+	'files' => [
+		'parent' => null,
+		'template' => null,
+	],
+	'canonical' => [
+		'base' => null, // base url for canonical links
+		'trailingSlash' => false, // whether to add trailing slashes to canonical URLs (except for files)
+	],
+	'ai' => require __DIR__ . '/options/ai.php',
+	'indexnow' => require __DIR__ . '/options/indexnow.php',
+	'searchConsole' => [
+		'enabled' => true,
+		'credentials' => null,
+		'tokenPath' => fn () => App::instance()->root('config') . '/.gsc-tokens.json'
+	],
+	'generateSchema' => true, // whether to generate default schema.org data
+	'locale' => 'en_US', // default locale, used for single-language sites
+	'dateFormat' => null, // custom date format
+];