Testing: ServeAotTest POST form submission via phpc serve --aot

[PurHur]

Problem

#248 adds VM phpc serve POST coverage, and #257 exercises dual REQUEST_BODY on a standalone AOT binary. There is still no integration test that:

1. Builds a tiny script with phpc build
2. Serves it with phpc serve --aot
3. Sends POST /form.php with application/x-www-form-urlencoded body
4. Asserts $_POST is populated per request

Without this, AOT-specific regressions in bin/serve-aot.php, ProjectManifest, or superglobals_refresh.c POST parsing will not fail local/Docker CI.

Goal

Mirror #248 in test/real/ServeAotTest.php once AOT runtime refresh for $_POST is reliable.

Scope

• Fixture form.php reading $_POST['name'] (same as Testing: ServeTest POST form submission via phpc serve #248)
• phpc build -o temp binary; phpc serve --aot against docroot
• httpPost() helper (share with Testing: ServeTest POST form submission via phpc serve #248 if landed first)
• Respect PHP_COMPILER_SKIP_SERVE_TESTS like other serve tests
• Optional second POST with different body on same process (pairs with AOT: RuntimeSuperglobalRefreshTest dual REQUEST_BODY on one binary #257)

Acceptance criteria

./script/ci-local.sh --filter ServeAotTest::testPost
# harness:
./script/docker-ci-local.sh --filter ServeAotTest::testPost

Test runs (not skipped) when LLVM + loopback bind available; skipped only when PHP_COMPILER_SKIP_SERVE_TESTS=1.

Verification (local only)

Do not require GitHub Actions. GHA may skip serve tests; Docker/local must not.

Dependencies

• Testing: ServeTest POST form submission via phpc serve #248 (VM POST serve test — reuse helper/fixture)
• AOT: RuntimeSuperglobalRefreshTest dual REQUEST_BODY on one binary #257 (dual REQUEST_BODY on binary — related AOT refresh)
• Web: Runtime-populated superglobals for JIT and AOT (per-request $_GET/$_POST) #49 / AOT: Per-request superglobal refresh in native binary (not compile-time bake) #201 runtime superglobals (POST slice)
• DevEx: phpc serve --aot runs precompiled CGI binary per project #213 phpc serve --aot (closed)

Links

• test/real/ServeAotTest.php, bin/serve-aot.php, lib/AOT/runtime/superglobals_refresh.c
• 🗺️ ROADMAP: Compile a small PHP web application (living document) #78 ROADMAP Phase 1