Language: user __destruct() JIT/AOT invoke (#4013)

[PurHur]

Summary

• Implement native user __destruct() for JIT/AOT via __object__invoke_destructor (class-id dispatch, php-src zend_objects_destroy_object subset).
• Extend phpc_gc.c with destructor registry, phpc_gc_run_shutdown_destructors, and main-script deferral (phpc_destruct_set_allow_delref(0) so new D(); echo end; matches VM ordering).
• Wire Refcount delref to invoke destructors on scope release when allowed, and skip destroy while main script defers.

php-src reference: Zend/zend_objects.c — zend_objects_destroy_object

Verification

./script/docker-exec.sh -- bash -lc 'source script/php-env.sh && php bin/vm.php test/repro-maintainer/destruct_user_4013.php'
# end\nbye\n

./script/docker-exec.sh -- bash -lc 'source script/php-env.sh && vendor/bin/phpunit --filter destruct_user'
# VM: pass | JIT: exit -1 (harness) | AOT: bye runs but stdout has trailing binary garbage (not merge-ready)

Status

Not merge-ready — AOT post-shutdown heap corruption pollutes stdout after correct end/bye; JIT MCJIT needs harness investigation. VM path and destructor ordering for main script are correct.

Closes #4013 when follow-up fixes land.

Made with Cursor

[PurHur]

Maintainer triage: keeping open — body already documents AOT stdout corruption + JIT harness exit -1. VM repro ordering looks correct; merge after AOT/JIT compliance green on destruct_user filter.