refactor(composer): represent composer via trait-based handlesrefactor/composer-handles

Replace the PartialComposer/Composer structs and the single
Rc<RefCell<PartialOrFullComposer>> enum with PartialComposer and
Composer traits (Composer: PartialComposer), InnerPartialComposer /
InnerFullComposer data structs, and the handle types FullComposerHandle
(impl Composer) and AnyComposerHandle (polymorphic enum, impl
PartialComposer), plus their weak variants.

Factory builds the full and partial graphs via separate Rc::new_cyclic
branches that share a build_composer_base helper. Call sites now use
trait methods that encapsulate borrowing instead of borrow_partial() /
composer_full*().

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/crates/shirabe/src/command/install_command.rs b/crates/shirabe/src/command/install_command.rs
index 4c869f4..29c8aa1 100644
--- a/crates/shirabe/src/command/install_command.rs
+++ b/crates/shirabe/src/command/install_command.rs
@@ -7,6 +7,7 @@ use shirabe_php_shim::PhpMixed;
 
 use crate::advisory::Auditor;
 use crate::command::{BaseCommand, BaseCommandData, HasBaseCommandData};
+use crate::composer::{Composer, PartialComposer};
 use crate::console::input::InputArgument;
 use crate::console::input::InputOption;
 use crate::installer::Installer;
@@ -102,7 +103,7 @@ impl InstallCommand {
         }
 
         let composer_handle = self.require_composer(None, None)?;
-        let mut composer = crate::command::composer_full_mut(&composer_handle);
+        let composer = crate::command::composer_full(&composer_handle);
 
         if !composer.get_locker().borrow_mut().is_locked() && !HttpDownloader::is_curl_enabled() {
             io.write_error("<warning>Composer is operating significantly slower than normal because you do not have the PHP curl extension enabled.</warning>");