add Licence and Readme

LICENSE

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+MIT License
+
+Copyright (c) 2026 Skynet Skin Jimmy GALLAND
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+---
+
+This software includes a login page template for Roundcube Webmail
+(https://roundcube.net), which is licensed under the GNU General Public
+License version 3 or later (GPLv3+).
+
+The Skynet name and logo are trademarks of their respective owners and are
+used here for illustrative/personal purposes only. This project is not
+affiliated with or endorsed by the creators of the Terminator franchise.

README.md

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+# ?? Skynet Skin ? Roundcube Webmail
+
+> Thème de connexion sci-fi pour Roundcube, inspiré du réseau de défense Skynet (Terminator).  
+> Fond animé, particules, data streams, palette bleu nuit / bleu science-fiction.
+
+Aidé par Claude AI
+
+![Version](https://img.shields.io/badge/Roundcube-1.6.x-blue)
+![License](https://img.shields.io/badge/license-MIT-green)
+![Skin base](https://img.shields.io/badge/base-elastic-informational)
+
+---
+
+## Aperçu
+
+- Page de connexion full-screen avec animations canvas (particules + data streams)
+- Indicateur de niveau de menace, ticker défilant
+- Logo Skynet avec effet de lueur bleue pulsante
+- Détection et affichage des erreurs d'authentification Roundcube
+- Responsive mobile (viewport adaptatif, anti-zoom iOS)
+
+---
+
+## Prérequis
+
+- Testé avec Roundcube **1.6.x**
+- Skin **elastic** présent dans `/var/www/html/skins/elastic/` (utilisé comme base)
+- Accès en écriture au répertoire `/var/www/html/skins/`
+
+---
+
+## Installation
+
+### 1. Copier le skin elastic comme base
+
+Le skin Skynet ne remplace que la page de login. Toutes les autres vues (messagerie, contacts, paramètres) héritent du skin **elastic**.
+
+```bash
+cp -r /var/www/html/skins/elastic/. /var/www/html/skins/skynet/
+```
+
+### 2. Déposer le template de login
+
+```bash
+cp login.html /var/www/html/skins/skynet/templates/login.html
+```
+
+### 3. Activer le skin dans la configuration Roundcube
+
+Dans votre fichier `config.inc.php` :
+
+```php
+$config['skin'] = 'skynet';
+```
+
+### 4. Vérifier les permissions
+
+```bash
+chown -R www-data:www-data /var/www/html/skins/skynet/
+chmod -R 755 /var/www/html/skins/skynet/
+```
+
+---
+
+## Installation via Docker
+
+Si Roundcube tourne dans un container Docker, montez le skin en volume dans votre `docker-compose.yml` :
+
+```yaml
+services:
+  roundcube:
+    image: roundcube/roundcubemail:latest
+    volumes:
+      - ./skins/skynet:/var/www/html/skins/skynet
+    environment:
+      - ROUNDCUBEMAIL_SKIN=skynet
+```
+
+Puis copiez le skin elastic depuis le container comme base :
+
+```bash
+# Extraire le skin elastic du container
+docker cp roundcube:/var/www/html/skins/elastic ./skins/skynet
+
+cp login.html ./skins/skynet/templates/login.html
+cp logo-skynet.png ./skins/skynet/images/logo-skynet.png
+
+# Inject le skin skynet dans le container
+docker cp ./skins/skynet roundcube:/var/www/html/skins
+```
+
+---
+
+## Compatibilité avec les plugins
+
+Certains plugins Roundcube incluent leur propre partie skin (templates, styles).  
+Lors de la copie d'elastic, ces fichiers sont automatiquement inclus, mais vérifiez les répertoires suivants après installation :
+
+### Plugins courants et leurs fichiers de skin
+
+| Plugin                    | Répertoire skin à vérifier  |
+| ------------------------- | --------------------------- |
+| `managesieve`             | `skins/skynet/managesieve/` |
+| `enigma`                  | `skins/skynet/enigma/`      |
+| `calendar` _(Kolab/Bimi)_ | `skins/skynet/calendar/`    |
+
+Pour vérifier que pour chaque plugin actif il y a un répertoire skins/
+
+```bash
+bash# Pour chaque plugin actif qui a un répertoire skins/
+for plugin in managesieve enigma zipdownload archive; do
+  if [ -d "/var/www/html/plugins/$plugin/skins/elastic" ]; then
+    cp -r /var/www/html/plugins/$plugin/skins/elastic \
+          /var/www/html/plugins/$plugin/skins/skynet
+    echo "? $plugin"
+  fi
+done
+```
+
+---
+
+## Licence
+
+Ce projet est distribué sous licence **MIT**. Voir le fichier [LICENSE](./LICENSE).

meta.json

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+{
+  "name": "Skynet",
+  "author": "Jimmy Galland",
+  "license": "MIT License",
+  "license-url": "https://www.debian.org/legal/licenses/mit.en.html",
+  "config": {
+    "supported_layouts": ["widescreen"],
+    "jquery_ui_colors_theme": "bootstrap",
+    "embed_css_location": "/styles/embed.css",
+    "editor_css_location": "/styles/embed.css",
+    "dark_mode_support": true,
+    "media_browser_css_location": "none",
+    "additional_logo_types": ["dark", "small", "small-dark"]
+  },
+  "meta": {
+    "viewport": "width=device-width, initial-scale=1.0, shrink-to-fit=no, maximum-scale=1.0",
+    "theme-color": "#f4f4f4",
+    "msapplication-navbutton-color": "#f4f4f4"
+  }
+}