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, 3 insertions, 3 deletions

diff --git a/crates/shirabe/src/command/audit_command.rs b/crates/shirabe/src/command/audit_command.rs
index ec8b495..5868b15 100644
--- a/crates/shirabe/src/command/audit_command.rs
+++ b/crates/shirabe/src/command/audit_command.rs
@@ -3,7 +3,7 @@
 use crate::advisory::AuditConfig;
 use crate::advisory::Auditor;
 use crate::command::{BaseCommand, BaseCommandData, HasBaseCommandData};
-use crate::composer::PartialComposerHandle;
+use crate::composer::{AnyComposerHandle, Composer, PartialComposer};
 use crate::console::input::InputOption;
 use crate::io::IOInterface;
 use crate::io::IOInterfaceImmutable;
@@ -144,10 +144,10 @@ impl AuditCommand {
 
     fn get_packages(
         &self,
-        composer: &PartialComposerHandle,
+        composer: &AnyComposerHandle,
         input: &dyn InputInterface,
     ) -> Result<Vec<crate::package::PackageInterfaceHandle>> {
-        let mut composer = crate::command::composer_full_mut(composer);
+        let composer = crate::command::composer_full(composer);
         if input.get_option("locked").as_bool().unwrap_or(false) {
             let locker = composer.get_locker().clone();
             let mut locker = locker.borrow_mut();