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, 5 insertions, 5 deletions

diff --git a/crates/shirabe/src/installer/package_event.rs b/crates/shirabe/src/installer/package_event.rs
index 342732d..17f9113 100644
--- a/crates/shirabe/src/installer/package_event.rs
+++ b/crates/shirabe/src/installer/package_event.rs
@@ -14,8 +14,8 @@ pub struct PackageEvent {
     io: std::rc::Rc<std::cell::RefCell<dyn IOInterface>>,
     dev_mode: bool,
     local_repo: Box<dyn RepositoryInterface>,
-    operations: Vec<Box<dyn OperationInterface>>,
-    operation: Box<dyn OperationInterface>,
+    operations: Vec<std::rc::Rc<dyn OperationInterface>>,
+    operation: std::rc::Rc<dyn OperationInterface>,
 }
 
 impl PackageEvent {
@@ -25,8 +25,8 @@ impl PackageEvent {
         io: std::rc::Rc<std::cell::RefCell<dyn IOInterface>>,
         dev_mode: bool,
         local_repo: Box<dyn RepositoryInterface>,
-        operations: Vec<Box<dyn OperationInterface>>,
-        operation: Box<dyn OperationInterface>,
+        operations: Vec<std::rc::Rc<dyn OperationInterface>>,
+        operation: std::rc::Rc<dyn OperationInterface>,
     ) -> Self {
         Self {
             inner: Event::new(event_name, vec![], IndexMap::new()),
@@ -59,7 +59,7 @@ impl PackageEvent {
         self.local_repo.as_ref()
     }
 
-    pub fn get_operations(&self) -> &Vec<Box<dyn OperationInterface>> {
+    pub fn get_operations(&self) -> &Vec<std::rc::Rc<dyn OperationInterface>> {
         &self.operations
     }