AOT: Per-request superglobal refresh in native binary (not compile-time bake)

[PurHur]

Problem

lib/JIT/SuperglobalInit.php bakes $_GET/$_POST at compile time from -q / QUERY_STRING. A deployed AOT binary cannot serve multiple users without recompiling.

This is the AOT-specific slice of #49.

Goal

Native binary reads CGI env or FastCGI params each request and rebuilds superglobal hashtables before user code runs.

Tasks

• Split compile-time init vs runtime __superglobals__refresh() entry hook
• Call refresh from CGI driver (Web: CGI/1.1 request driver (stdin/stdout, env, Status line) #50) and FastCGI loop (Web: FastCGI request loop adapter (nginx / php-fpm compatible) #173)
• Keep -q bake mode for static pages (002-StaticWeb) via flag
• PHPT AOT: two requests, different QUERY_STRING, same binary
• Document in README AOT deployment section

Acceptance criteria

php bin/compile.php -o app examples/001-SimpleWeb/example.php
QUERY_STRING='name=A' ./app
QUERY_STRING='name=B' ./app
# prints different names

Dependencies

• Web: Runtime-populated superglobals for JIT and AOT (per-request $_GET/$_POST) #49 (parent tracking)
• Web: CGI/1.1 request driver (stdin/stdout, env, Status line) #50 CGI driver
• Infrastructure: LLVM 9 → 14+ upgrade and CI matrix #174 LLVM upgrade (linking stability)

Files

• lib/JIT/SuperglobalInit.php, lib/AOT/, bin/compile.php