wp-plugin-development

Complete WordPress plugin development workflow from architecture through security and release packaging. Use this skill for plugin work such as: If this is a full site repo, pick the specific plugin under wp-content/plugins/ or mu-plugins/ before changing code. Guidelines: See: Activation hooks are fragile; follow guardrails: See: Prefer Settings API for options: See: Before shipping: See: See: See: For canonical detail, consult the Plugin Handbook and security guidelines before inventing patterns. - Covers plugin structure, hooks/actions/filters, activation/deactivation/uninstall lifecycle, and Settings API for admin UI and options management - Includes mandatory security baseline: input validation/sanitization, nonces, capability checks, and parameterized SQL queries via $wpdb->prepare() - Supports data storage patterns, cron task setup with idempotency, and schema migrations with version tracking - Targets WordPress 6.9+ (PHP 7.2.24+); uses filesystem-based workflows with bash, Node, and optional WP-CLI for verification and debugging - creating or refactoring plugin structure (bootstrap, includes, namespaces/classes) - adding hooks/actions/filters - activation/deactivation/uninstall behavior and migrations - adding settings pages / options / admin UI (Settings API) - security fixes (nonces, capabilities, sanitization/escaping, SQL safety) - packaging a release (build...