feat(php-rpc): implement phpinfo() capture over RPC

DiagnoseCommand::check_platform needed phpinfo() output but
shirabe-php-shim's ob_start()/phpinfo()/ob_get_clean() are unmodeled
todo!()s. Add a phpinfo dispatch entry to the PHP worker (capturing
output the same way extension_info already does) and a get_phpinfo()
wrapper, then switch check_platform to call it directly.

This unblocks the phpinfo-related panic in diagnose; the ignored
tests now hit a separate RefCell double-borrow bug in check_http, so
their ignore reasons are updated to point at that instead.

1 files changed, 5 insertions, 0 deletions

diff --git a/crates/shirabe-php-rpc/php/worker.php b/crates/shirabe-php-rpc/php/worker.php
index cb2bf48d..d7d8f251 100644
--- a/crates/shirabe-php-rpc/php/worker.php
+++ b/crates/shirabe-php-rpc/php/worker.php
@@ -22,6 +22,11 @@ $dispatch = [
         $re->info();
         return (string) ob_get_clean();
     },
+    'phpinfo' => static function ($what) {
+        ob_start();
+        phpinfo((int) $what);
+        return (string) ob_get_clean();
+    },
 ];
 $read_exact = static function ($conn, int $len): ?string {
     $buf = '';