feat(diagnose-command): query the real PHP runtime in one RPC call

diagnose used to read hardcoded shim stubs, so it described a fictional
runtime: OPENSSL_VERSION_NUMBER was always 0 and tripped the TLSv1.1/1.2
check, PHP_BINARY and OPENSSL_VERSION_TEXT were empty, and the extension,
function and ini probes answered from a fixed table.

The PHP worker gained a `diagnose` entry that returns every fact the
command needs as one PHP array, cached in a OnceLock so the several call
sites share a single round trip. Reading it back needed array support in
the serialize() parser, which in turn lets get_loaded_extensions and
get_all_ini_files return real lists instead of comma-joined strings.

Also fixes the openssl_version message, which dropped strstr()'s
before_needle argument during the port, and check_connectivity's
allow_url_fopen test, which did not follow PHP string truthiness.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

1 files changed, 6 insertions, 5 deletions

diff --git a/crates/shirabe/tests/command/diagnose_command_test.rs b/crates/shirabe/tests/command/diagnose_command_test.rs
index f1bb2ef5..71f3aa07 100644
--- a/crates/shirabe/tests/command/diagnose_command_test.rs
+++ b/crates/shirabe/tests/command/diagnose_command_test.rs
@@ -46,11 +46,12 @@ Checking github.com rate limit: "
 
 #[test]
 #[serial]
-#[ignore = "shirabe_php_shim::OPENSSL_VERSION_NUMBER is a hardcoded stub (0), which always trips \
-            check_platform's `< 0x1000100f` TLSv1.1/1.2 support check regardless of the real \
-            linked OpenSSL, forcing a non-zero exit code; diagnose also checks live http/https \
-            connectivity to packagist and the github.com rate limit (as the PHP original does), \
-            so the test additionally requires real network access"]
+#[ignore = "check_composer_audit locates Composer's own vendor/composer/installed.json through a \
+            literal relative path standing in for PHP's __DIR__, so it is never found from the \
+            temporary working directory this test runs in; diagnose then reports a warning and \
+            exits non-zero. diagnose also checks live http/https connectivity to packagist and \
+            the github.com rate limit (as the PHP original does), so the test additionally \
+            requires real network access"]
 fn test_cmd_success() {
     let tear_down = init_temp_composer(
         Some(&serde_json::json!({