feat(plugin): carry Http\Response across as a materialized value

A response is built for one request and the graph never retains it, so there
is no entity for a handle to point at. The child holds a real instance
instead, revived from the object record the wire carries, and collect() frees
the copy each world holds — which is what that method is for. The
value-object rule rejects the class only because collect() assigns to $this,
so the category comes from an overrides.list entry.

HttpDownloader::get() and copy() answer with one.

Two gaps stay: decodeJson() reaches Composer\Json\JsonFile, which a guard
shadows, and Composer answers a curl request with the CurlResponse subclass
where this port flattens the value into a Response.

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

1 files changed, 2 insertions, 0 deletions

diff --git a/crates/shirabe-php-rpc/php/runtime/Shirabe/MaterializedValue.php b/crates/shirabe-php-rpc/php/runtime/Shirabe/MaterializedValue.php
index c16b4e18..73a12033 100644
--- a/crates/shirabe-php-rpc/php/runtime/Shirabe/MaterializedValue.php
+++ b/crates/shirabe-php-rpc/php/runtime/Shirabe/MaterializedValue.php
@@ -17,6 +17,7 @@ use Composer\Semver\Constraint\Constraint;
 use Composer\Semver\Constraint\MatchAllConstraint;
 use Composer\Semver\Constraint\MatchNoneConstraint;
 use Composer\Semver\Constraint\MultiConstraint;
+use Composer\Util\Http\Response;
 
 final class MaterializedValue
 {
@@ -26,6 +27,7 @@ final class MaterializedValue
         MultiConstraint::class,
         MatchAllConstraint::class,
         MatchNoneConstraint::class,
+        Response::class,
         \DateTimeImmutable::class,
         \DateTime::class,
     ];