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/update_command.rs b/crates/shirabe/src/command/update_command.rs
index f879283..c61e28a 100644
--- a/crates/shirabe/src/command/update_command.rs
+++ b/crates/shirabe/src/command/update_command.rs
@@ -18,7 +18,7 @@ use shirabe_semver::intervals::Intervals;
 use crate::advisory::Auditor;
 use crate::command::BumpCommand;
 use crate::command::{BaseCommand, BaseCommandData, HasBaseCommandData};
-use crate::composer::PartialComposerHandle;
+use crate::composer::{AnyComposerHandle, Composer, PartialComposer};
 use crate::console::input::InputArgument;
 use crate::console::input::InputOption;
 use crate::dependency_resolver::request::{self, Request, UpdateAllowTransitiveDeps};
@@ -460,7 +460,7 @@ impl UpdateCommand {
         io: &dyn IOInterface,
         input: &dyn InputInterface,
         output: &dyn OutputInterface,
-        composer: &PartialComposerHandle,
+        composer: &AnyComposerHandle,
         packages: Vec<String>,
     ) -> Result<Vec<String>> {
         if !input.is_interactive() {
@@ -618,7 +618,7 @@ impl UpdateCommand {
         .into())
     }
 
-    fn create_version_selector(&self, composer: &PartialComposerHandle) -> Result<VersionSelector> {
+    fn create_version_selector(&self, composer: &AnyComposerHandle) -> Result<VersionSelector> {
         let composer = crate::command::composer_full(composer);
         let mut repository_set = RepositorySet::new(
             &composer.get_package().get_minimum_stability(),