feat(shirabe): resolve phase-b TODOs with shared ownership

Replace TODO(phase-b) placeholders (todo!() and commented-out code)
with real implementations:

- Share JsonFile via Rc<RefCell<JsonFile>> so JsonConfigSource and the
  owning command can hold the same instance (base_config_command,
  config_command, repository_command, require_command, create_project,
  remove_command, factory)
- Change InstallerInterface methods (is_installed, download, prepare,
  cleanup, get_install_path) to &mut self so initialize_vendor_dir can
  run, propagated to all installer implementations
- Pass io/config/filesystem/process by clone instead of moving or
  stubbing (auth_helper, svn_driver, curl_downloader, library_installer)
- Make TransportException Clone and store it by value in VcsRepository
- Clone operations in Transaction sort, root_aliases/temporary_constraints
  in RepositorySet::create_pool, and share CompletePackage via handle in
  PlatformRepository
- Wire up set_option, set_requires/set_dev_requires, installation manager
  setters, BumpCommand::set_composer, and clean_backups/set_local_phar

1 files changed, 5 insertions, 7 deletions

diff --git a/crates/shirabe/src/plugin/plugin_manager.rs b/crates/shirabe/src/plugin/plugin_manager.rs
index d4c3113..9dcf754 100644
--- a/crates/shirabe/src/plugin/plugin_manager.rs
+++ b/crates/shirabe/src/plugin/plugin_manager.rs
@@ -126,19 +126,17 @@ impl PluginManager {
     pub fn load_installed_plugins(&mut self) -> anyhow::Result<()> {
         // TODO(plugin): plugin loading is part of the plugin API
         if !self.are_plugins_disabled("local") {
-            // TODO(phase-b): PHP returns a shared object reference; we clone the repository
-            // box here to side-step a borrow conflict between `&self.composer` and
-            // `&mut self`. The Rust port should eventually share via Rc<RefCell<_>>.
             let repo = self
                 .composer_full()
                 .borrow()
                 .get_repository_manager()
                 .borrow()
                 .get_local_repository();
-            let root_package = crate::package::RootPackageInterfaceHandle::dup(
-                self.composer_full().borrow().get_package(),
-            );
-            self.load_repository(&mut *repo.borrow_mut(), false, Some(root_package))?;
+            self.load_repository(
+                &mut *repo.borrow_mut(),
+                false,
+                Some(self.composer_full().borrow().get_package().clone()),
+            )?;
         }
 
         if self.global_composer.is_some() && !self.are_plugins_disabled("global") {