v1.1.0

Changes

• Customer group filtering: Sales disable can now target specific customer groups via multiselect in admin config. Leave empty for backward-compatible "all groups" behavior.
• Show Only After Login: New checkbox for banner and modal — only displays to logged-in customers whose group is restricted. Prevents confusing guests who may belong to unrestricted groups.
• Guest special case: When "Not Logged In" group is restricted, add-to-cart button stays visible but server blocks the action with an error message (since we can't identify the customer before login).
• All 4 server-side plugins (Cart Add, Quote AddProduct, API CartItemRepository, Checkout) now check customer group.
• New JS component (disable-sales-group-filter.js) handles client-side visibility via Magento customerData for FPC compatibility.
• New CustomerGroup source model for admin multiselect.
• Added Magento_Customer module dependency.
• Spanish translations for new config fields.