feat(hg): implement Hg::new constructor

Take config and process as shared Rc<RefCell<..>> handles matching the
struct fields and Util\Git's constructor, assigning them directly. PHP
stores the same Config object reference, so sharing the Rc is faithful;
update the three call sites to pass cloned handles.

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

3 files changed, 13 insertions, 9 deletions

diff --git a/crates/shirabe/src/downloader/hg_downloader.rs b/crates/shirabe/src/downloader/hg_downloader.rs
index 59a4473..16a78a0 100644
--- a/crates/shirabe/src/downloader/hg_downloader.rs
+++ b/crates/shirabe/src/downloader/hg_downloader.rs
@@ -85,8 +85,8 @@ impl VcsDownloader for HgDownloader {
     ) -> Result<Option<PhpMixed>> {
         let hg_utils = HgUtils::new(
             self.inner.io.clone(),
-            &self.inner.config.borrow(),
-            &self.inner.process,
+            self.inner.config.clone(),
+            self.inner.process.clone(),
         );
 
         let path_clone = path.to_string();
@@ -140,8 +140,8 @@ impl VcsDownloader for HgDownloader {
     ) -> Result<Option<PhpMixed>> {
         let hg_utils = HgUtils::new(
             self.inner.io.clone(),
-            &self.inner.config.borrow(),
-            &self.inner.process,
+            self.inner.config.clone(),
+            self.inner.process.clone(),
         );
 
         let ref_ = target
diff --git a/crates/shirabe/src/repository/vcs/hg_driver.rs b/crates/shirabe/src/repository/vcs/hg_driver.rs
index 4a6188e..737443c 100644
--- a/crates/shirabe/src/repository/vcs/hg_driver.rs
+++ b/crates/shirabe/src/repository/vcs/hg_driver.rs
@@ -85,8 +85,8 @@ impl HgDriver {
 
             let hg_utils = HgUtils::new(
                 self.inner.io.clone(),
-                &self.inner.config.borrow(),
-                &self.inner.process,
+                self.inner.config.clone(),
+                self.inner.process.clone(),
             );
 
             if is_dir(&self.repo_dir)
diff --git a/crates/shirabe/src/util/hg.rs b/crates/shirabe/src/util/hg.rs
index d20cf16..7fbf125 100644
--- a/crates/shirabe/src/util/hg.rs
+++ b/crates/shirabe/src/util/hg.rs
@@ -22,10 +22,14 @@ pub struct Hg {
 impl Hg {
     pub fn new(
         io: std::rc::Rc<std::cell::RefCell<dyn IOInterface>>,
-        config: &Config,
-        process: &std::rc::Rc<std::cell::RefCell<ProcessExecutor>>,
+        config: std::rc::Rc<std::cell::RefCell<Config>>,
+        process: std::rc::Rc<std::cell::RefCell<ProcessExecutor>>,
     ) -> Self {
-        todo!()
+        Self {
+            io,
+            config,
+            process,
+        }
     }
 
     pub fn run_command(