feat(dependency-resolver): share operations via Rc, drop clone_box

OperationInterface::clone_box (a todo!() trait-object clone stub) is
removed in favor of Rc<dyn OperationInterface> shared ownership. All its
methods are &self, so operations are immutable value objects that Rc can
share; pushing the same operation into multiple lists (installer's
install/uninstall splits) becomes a cheap Rc clone instead of clone_box.

Box<dyn OperationInterface> is replaced with Rc<dyn ...> across
Transaction (and its Lock/LocalRepo wrappers), Installer, PackageEvent,
InstallationManager and EventDispatcher; Box::new operation constructions
become Rc::new.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/crates/shirabe/src/dependency_resolver/lock_transaction.rs b/crates/shirabe/src/dependency_resolver/lock_transaction.rs
index aa7ae25..61f5b39 100644
--- a/crates/shirabe/src/dependency_resolver/lock_transaction.rs
+++ b/crates/shirabe/src/dependency_resolver/lock_transaction.rs
@@ -209,7 +209,7 @@ impl LockTransaction {
 
     pub fn get_operations(
         &self,
-    ) -> &Vec<Box<dyn crate::dependency_resolver::operation::OperationInterface>> {
+    ) -> &Vec<std::rc::Rc<dyn crate::dependency_resolver::operation::OperationInterface>> {
         self.inner.get_operations()
     }
 }