feat(plugin): activate plugins through the PHP RPC worker

Implement the remainder of PluginManager::registerPackage: the plugin
autoload map is built by the ported createLoader/parseAutoloads and
served to the worker over the existing reverse-RPC autoloader, files
entries go through a composerRequire-equivalent glue call, and
already-defined classes take the upstream _composer_tmp rename/eval
path. Instantiation uses the new NewObject/CallPhpMethod lanes backed
by a P table in the worker; PhpPluginProxy adapts the resulting handle
to PluginInterface, with $composer/$io exposed to plugin callbacks via
an R table (unsupported methods stay explicit errors). Hand-written
proxy stubs cover Composer, PartialComposer and the IO hierarchy, and
the stub autoloader is re-prepended after loading the Composer PHP
runtime so its vendor autoloader cannot shadow proxied FQCNs.

FilesystemRepository::write now mirrors InstalledVersions::reload into
a running worker (class_exists-guarded, so an unloaded class keeps its
upstream lazy-load behavior), removing the previously undefined
observation window.

The installer pipeline passes the installed repository as a shared
handle instead of a long-lived `&mut dyn`: plugin registration runs
inside InstallationManager::execute and re-enters the same local
repository through the RepositoryManager, which would panic on the
RefCell re-borrow under the old shape.

PluginInterface lifecycle methods now take an owned ComposerHandle
(plugins retain $composer past the call) and return anyhow::Result
(PHP plugin code may throw); the plugin list uses shared ownership so
the identity comparison of removePlugin survives the dual storage in
registeredPlugins, matching PHP reference semantics.

Ports the activate/upgrade/uninstall tests of PluginInstallerTest,
serialized across the shared worker process whose persistent class
table is exactly what exercises the rename path.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

1 files changed, 29 insertions, 51 deletions

diff --git a/crates/shirabe/tests/installer/metapackage_installer_test.rs b/crates/shirabe/tests/installer/metapackage_installer_test.rs
index b87fdebd..8675c00e 100644
--- a/crates/shirabe/tests/installer/metapackage_installer_test.rs
+++ b/crates/shirabe/tests/installer/metapackage_installer_test.rs
@@ -8,7 +8,7 @@ use crate::test_case::get_package;
 use shirabe::installer::{InstallerInterface, MetapackageInstaller};
 use shirabe::io::IOInterface;
 use shirabe::io::null_io::NullIO;
-use shirabe::repository::{InstalledArrayRepository, RepositoryInterface};
+use shirabe::repository::{InstalledArrayRepository, InstalledRepositoryInterfaceHandle};
 
 fn installer() -> MetapackageInstaller {
     let io: std::rc::Rc<std::cell::RefCell<dyn IOInterface>> =
@@ -20,17 +20,13 @@ fn installer() -> MetapackageInstaller {
 fn test_install() {
     let package = get_package("test/pkg", "1.0.0");
     let installer = installer();
-    let mut repository = InstalledArrayRepository::new_with_packages(vec![]).unwrap();
+    let repository = InstalledRepositoryInterfaceHandle::new(
+        InstalledArrayRepository::new_with_packages(vec![]).unwrap(),
+    );
 
-    run(installer.install(
-        &std::cell::RefCell::new(
-            &mut repository as &mut dyn shirabe::repository::InstalledRepositoryInterface,
-        ),
-        package.clone(),
-    ))
-    .unwrap();
+    run(installer.install(&repository, package.clone())).unwrap();
 
-    assert!(repository.has_package(package).unwrap());
+    assert!(repository.borrow_mut().has_package(package).unwrap());
 }
 
 #[test]
@@ -38,59 +34,41 @@ fn test_update() {
     let initial = get_package("test/initial", "1.0.0");
     let target = get_package("test/target", "1.0.1");
     let installer = installer();
-    let mut repository =
-        InstalledArrayRepository::new_with_packages(vec![initial.clone()]).unwrap();
-
-    run(installer.update(
-        &std::cell::RefCell::new(
-            &mut repository as &mut dyn shirabe::repository::InstalledRepositoryInterface,
-        ),
-        initial.clone(),
-        target.clone(),
-    ))
-    .unwrap();
+    let repository = InstalledRepositoryInterfaceHandle::new(
+        InstalledArrayRepository::new_with_packages(vec![initial.clone()]).unwrap(),
+    );
 
-    assert!(!repository.has_package(initial.clone()).unwrap());
-    assert!(repository.has_package(target.clone()).unwrap());
+    run(installer.update(&repository, initial.clone(), target.clone())).unwrap();
 
-    // Updating again, with the initial package no longer installed, fails.
     assert!(
-        run(installer.update(
-            &std::cell::RefCell::new(
-                &mut repository as &mut dyn shirabe::repository::InstalledRepositoryInterface
-            ),
-            initial,
-            target
-        ))
-        .is_err()
+        !repository
+            .borrow_mut()
+            .has_package(initial.clone())
+            .unwrap()
     );
+    assert!(repository.borrow_mut().has_package(target.clone()).unwrap());
+
+    // Updating again, with the initial package no longer installed, fails.
+    assert!(run(installer.update(&repository, initial, target)).is_err());
 }
 
 #[test]
 fn test_uninstall() {
     let package = get_package("test/pkg", "1.0.0");
     let installer = installer();
-    let mut repository =
-        InstalledArrayRepository::new_with_packages(vec![package.clone()]).unwrap();
-
-    run(installer.uninstall(
-        &std::cell::RefCell::new(
-            &mut repository as &mut dyn shirabe::repository::InstalledRepositoryInterface,
-        ),
-        package.clone(),
-    ))
-    .unwrap();
+    let repository = InstalledRepositoryInterfaceHandle::new(
+        InstalledArrayRepository::new_with_packages(vec![package.clone()]).unwrap(),
+    );
 
-    assert!(!repository.has_package(package.clone()).unwrap());
+    run(installer.uninstall(&repository, package.clone())).unwrap();
 
-    // Uninstalling again, with the package no longer installed, fails.
     assert!(
-        run(installer.uninstall(
-            &std::cell::RefCell::new(
-                &mut repository as &mut dyn shirabe::repository::InstalledRepositoryInterface
-            ),
-            package
-        ))
-        .is_err()
+        !repository
+            .borrow_mut()
+            .has_package(package.clone())
+            .unwrap()
     );
+
+    // Uninstalling again, with the package no longer installed, fails.
+    assert!(run(installer.uninstall(&repository, package)).is_err());
 }