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, 4 insertions, 3 deletions

diff --git a/crates/shirabe/src/command/remove_command.rs b/crates/shirabe/src/command/remove_command.rs
index 9ea7329..2b90f80 100644
--- a/crates/shirabe/src/command/remove_command.rs
+++ b/crates/shirabe/src/command/remove_command.rs
@@ -9,6 +9,7 @@ use shirabe_php_shim::{PhpMixed, UnexpectedValueException, array_map, strtolower
 
 use crate::advisory::Auditor;
 use crate::command::{BaseCommand, BaseCommandData, HasBaseCommandData};
+use crate::composer::{Composer, PartialComposer};
 use crate::config::ConfigSourceInterface;
 use crate::config::JsonConfigSource;
 use crate::console::input::InputArgument;
@@ -184,7 +185,7 @@ impl RemoveCommand {
 
         if input.get_option("unused").as_bool().unwrap_or(false) {
             let composer = self.require_composer(None, None)?;
-            let mut composer = crate::command::composer_full_mut(&composer);
+            let composer = crate::command::composer_full(&composer);
             {
                 let locker = composer.get_locker().clone();
                 let mut locker = locker.borrow_mut();
@@ -430,7 +431,7 @@ impl RemoveCommand {
 
         // TODO(plugin): deactivate installed plugins
         if let Some(composer_opt) = self.try_composer(None, None) {
-            let mut composer_opt = crate::command::composer_full_mut(&composer_opt);
+            let composer_opt = crate::command::composer_full(&composer_opt);
             composer_opt
                 .get_plugin_manager()
                 .borrow_mut()
@@ -439,7 +440,7 @@ impl RemoveCommand {
 
         self.reset_composer();
         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 dry_run {
             // TODO(phase-b): composer.get_package() returns &dyn RootPackageInterface; set_requires/set_dev_requires need &mut self; needs shared-ownership refactor