[PurHur]

Summary

• Hoist DECLARE_CLASS / enum / interface opcodes before FUNCDEF in Compiler::compileOps so JIT/AOT compile member constants before function bodies that reference ClassName::CONST (MiniWebApp Router::DEFAULT_CONTACT_NAME_MAX pattern).
• Add compliance case test/compliance/cases/classes/class_const_fetch_user.phpt, AOT fixture, and ClassConstFetchVMTest for ci-fast --filter ClassConstFetch.

Problem

examples/003-MiniWebApp/src/Router.php declares a global helper above class Router with public const. VM worked (constants exist at call time), but JIT compiles FUNCDEF bodies eagerly and previously hit Undefined class constant when TYPE_DECLARE_CLASS ran later in the opcode stream.

Test plan

• php bin/vm.php Router-style snippet → 200
• ./phpc lint examples/003-MiniWebApp/src/Router.php (zero unsupported)
• vendor/bin/phpunit --filter ClassConstFetch (VM + AOT; 4 tests)
• Rebased on master (stdlib: uniqid() VM, LLVM JIT, and AOT (#2219) #2224 uniqid)

Closes #2215

[PurHur]

Runforge harness verification

• VM: Router-style `ClassName::CONST` from a function declared above the class returns `200`.
• Lint: `./phpc lint examples/003-MiniWebApp/src/Router.php` — no unsupported nodes.
• Opcode order: top-level `TYPE_DECLARE_CLASS` now precedes `TYPE_FUNCDEF` (see `bin/print.php`).

Not merged here: `./script/docker-ci-local.sh fast` stops on pre-existing `docs/capabilities.md` drift on `master` (before PHPUnit). JIT CLI also fails in this image during LLVM bitcode preload (`MemoryBuffer::parseBitcode`), unrelated to this diff.

Recommend merge after `make test-harness` (or full `ci-local.sh`) on a host with working LLVM 9.