Source: WordPress#3624

Status: open draft, conflicting, mergeStateStatus=DIRTY.

Findings:

• Adds a --wasm-wordpress-plugin descriptor that loads a PHP.wasm extension and generates an mu-plugin bootstrap for actions/filters.
• Generic PHP extension CLI support has partly landed in [CLI] Load custom PHP.wasm extensions WordPress/wordpress-playground#3616 and sidecar support in [PHP] Support extraFiles for custom PHP extensions WordPress/wordpress-playground#3580; the WordPress hook descriptor/bootstrap part is not on trunk.
• CI blocker: test-built-npm-packages failed in run 25928079075/job 76214608523.

Recommendation:
Keep only if the WordPress hook descriptor is still desired. Rebase onto current extension APIs and drop duplicated loader changes. Add focused CLI tests for descriptor resolution, bootstrap generation, hook registration, and local/URL manifests.