Add WebP support and update dependencies

[cedric07]

• Added imagemin-webp to package.json and updated yarn.lock.
• Configured WebP generation in webpack.common.js.
• Updated SCSS files to support WebP images.
• Removed obsolete logo SVG file.

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Sur la base de cette doc : https://webpack.js.org/plugins/image-minimizer-webpack-plugin/#loader-generator-example-for-imagemin

Par défaut webpack va garder également le fichier non converti dans le dossier compilé.

Pour l'appel au fichier dans le code, il faut lui passer l'option presetdu generator : ?as=webp

Exemple : background-image: url(../img/static/logo.jpg?as=webp) et Webpack viendra automatiquement convertir le fichier en webp et remplacer l'url : background-image: url(images/logo.webp)

Exemple : background-image: url(../img/static/logo.jpg) et Webpack ne fera pas la conversion et gardera le fichier jpg : background-image: url(images/logo.jpg)

La conversion se fait au yarn build

Si elle doit se faire aussi en mode dev, il faudrait déplacer le code au dessus :

module.exports = {
	entry: entries,
	output: { ... },
	plugins: [
		// 1. Le générateur va ici pour fonctionner en DEV et en PROD
		new ImageMinimizerPlugin({
			generator: [
				{
					preset: 'webp',
					implementation: ImageMinimizerPlugin.imageminGenerate,
					options: {
						plugins: ['imagemin-webp'],
					},
				},
			],
		}),
	],
	optimization: {
		minimizer: [
			// 2. La minification classique reste ici, elle ne tournera qu'en PROD
			new ImageMinimizerPlugin({ ... }),
		],
	},
}

---

Note

Medium Risk
Build pipeline now rewrites image URLs to generated WebP assets and changes how images are processed in dev vs prod, which could break asset paths or output if misconfigured. CI also changes yarn/node setup (Corepack + cached yarn), which can surface lockfile/packaging issues.

Overview
Adds WebP support by configuring ImageMinimizerPlugin as a webpack loader/generator so assets requested with ?as=webp are emitted as .webp (and keeps production-only minification in the same plugin instance).

Updates SCSS (background-static mixin and login logo) to request WebP variants via ?as=webp, adds the imagemin-webp dependency, and removes the now-unused logo-beapi.svg.

Modernizes GitHub Actions by enabling Corepack, upgrading actions/setup-node to v4, and enabling Yarn caching.

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[francoistibo]

forcer la transformation de toutes les images en WebP

[francoistibo]

tester composer cs pour fix les warnings

[cursor]

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