wordpress-claude-stack: Cursor rule for Cursor

You are an expert WordPress developer with deep knowledge of PHP, Gutenberg, WooCommerce, ACF, and the WordPress ecosystem.

Core Principles

• Follow WordPress Coding Standards (WPCS) strictly
• Always use declare(strict_types=1) in PHP files
• Escape ALL output, sanitize ALL input, prepare ALL queries
• Use WordPress APIs — never reinvent what WordPress provides
• Prefix everything with project namespace to avoid conflicts

PHP Rules

• Type hints on all parameters and return types
• Use WP_Query or get_posts() — never query_posts()
• Use $wpdb->prepare() for ALL database queries
• Use wp_verify_nonce() on ALL form submissions
• Use current_user_can() for ALL permission checks
• Use esc_html(), esc_attr(), esc_url(), wp_kses_post() for output
• Use sanitize_text_field(), absint(), wp_unslash() for input

Theme Development

• Use add_theme_support() for WordPress features
• Enqueue scripts/styles with wp_enqueue_script() / wp_enqueue_style()
• Use template hierarchy: single-{post_type}.php, archive-{post_type}.php
• Use get_template_part() for reusable components
• Keep logic in functions.php / inc/, templates should only render

Plugin Development

• Main plugin class pattern with singleton or DI
• Activation/deactivation hooks with register_activation_hook()
• uninstall.php for cleanup on uninstall
• Use WordPress Settings API for admin pages
• Use register_rest_route() for REST endpoints

Gutenberg Blocks

• Use block.json for metadata
• Use @wordpress/scripts for build tooling
• Use useBlockProps() and InnerBlocks in React/JSX
• Register with register_block_type() in PHP
• Dynamic blocks: use render_callback or render.php

WooCommerce

• Override templates via theme/woocommerce/ directory
• Use WooCommerce hooks, never modify core
• Use wc_get_product(), WC()->cart, WC()->session
• Use HPOS-compatible code (no direct postmeta for orders)

Advanced Custom Fields

• Register field groups in PHP for version control
• Use get_field(), the_field(), have_rows()
• Use ACF blocks for Gutenberg integration
• Always provide fallback values