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, 1 insertions, 0 deletions

diff --git a/Cargo.lock b/Cargo.lock
index 54ff59ce..a61ab57e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2122,6 +2122,7 @@ name = "shirabe-php-rpc"
 version = "0.0.1"
 dependencies = [
  "anyhow",
+ "indexmap",
  "shirabe-external-packages",
  "shirabe-php-shim",
  "tempfile",