Extend POM Translate with public hooks

This reference covers pom_translate_* actions and filters intentionally available at integration boundaries. Preserve input types and existing array members, and avoid direct storage writes inside filters.

The supported groups are configuration, language resolution, request handling, parser extraction, rendered output, SEO, selectors, lifecycle invalidation, and WooCommerce.

Some topics have no dedicated hook. Their pages state the supported alternative rather than inventing an extension point.

Register callbacks in a custom plugin and document priority when ordering matters. A filter may execute several times per request, so callbacks must be deterministic and free of unbounded queries or remote calls.