Panic compiling `static::X` class constant access

[nahime0]

Description

static::X inside a static method should resolve via late static binding, but the current compiler panics during codegen instead of compiling the program or producing a diagnostic.

Minimal reproduction

<?php
class A { const X = 'A'; public static function show() { echo static::X; } }
class B extends A { const X = 'B'; }
B::show();

Steps to reproduce

1. Save the program as main.php.
2. Run php main.php.
3. Compile with elephc: target/debug/elephc main.php.

Expected behavior

PHP 8.4 prints:

B

Elephc should either match PHP or emit a normal unsupported-feature diagnostic. It should not panic.

Actual behavior

Compilation aborts with a Rust panic:

thread 'main' panicked at src/codegen/expr/objects.rs:480:10:
ScopedConstantAccess on `static` not supported yet

Environment

• elephc 0.23.5
• PHP 8.4.19
• macOS arm64
• reproduced on 2026-06-05

Notes

This is a compiler crash, not just a semantic mismatch.

[nahime0]

Closed by #433 (merged).