refactor(package): point ComposerMirror to crate::util, drop external stub

ComposerMirror is part of Composer itself (Util/ComposerMirror.php),
not an external package, so its stub belongs in the shirabe crate's
util module rather than shirabe-external-packages.

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

4 files changed, 2 insertions, 47 deletions

diff --git a/crates/shirabe-external-packages/src/composer/mod.rs b/crates/shirabe-external-packages/src/composer/mod.rs
index c70fa2a..907f985 100644
--- a/crates/shirabe-external-packages/src/composer/mod.rs
+++ b/crates/shirabe-external-packages/src/composer/mod.rs
@@ -1,9 +1,7 @@
 pub mod ca_bundle;
 pub mod pcre;
-pub mod util;
 pub mod xdebug_handler;
 
 pub use ca_bundle::*;
 pub use pcre::*;
-pub use util::*;
 pub use xdebug_handler::*;
diff --git a/crates/shirabe-external-packages/src/composer/util/composer_mirror.rs b/crates/shirabe-external-packages/src/composer/util/composer_mirror.rs
deleted file mode 100644
index e9e5193..0000000
--- a/crates/shirabe-external-packages/src/composer/util/composer_mirror.rs
+++ /dev/null
@@ -1,35 +0,0 @@
-//! ref: composer/src/Composer/Util/ComposerMirror.php
-
-#[derive(Debug)]
-pub struct ComposerMirror;
-
-impl ComposerMirror {
-    pub fn process_url(
-        _mirror_url: &str,
-        _package_name: &str,
-        _version: &str,
-        _reference: Option<&str>,
-        _r_type: Option<&str>,
-        _pretty_version: Option<&str>,
-    ) -> String {
-        todo!()
-    }
-
-    pub fn process_git_url(
-        _mirror: &str,
-        _package_name: &str,
-        _url: &str,
-        _extension: &str,
-    ) -> String {
-        todo!()
-    }
-
-    pub fn process_hg_url(
-        _mirror: &str,
-        _package_name: &str,
-        _url: &str,
-        _extension: &str,
-    ) -> String {
-        todo!()
-    }
-}
diff --git a/crates/shirabe-external-packages/src/composer/util/mod.rs b/crates/shirabe-external-packages/src/composer/util/mod.rs
deleted file mode 100644
index 02c41b6..0000000
--- a/crates/shirabe-external-packages/src/composer/util/mod.rs
+++ /dev/null
@@ -1,3 +0,0 @@
-pub mod composer_mirror;
-
-pub use composer_mirror::*;
diff --git a/crates/shirabe/src/package/package.rs b/crates/shirabe/src/package/package.rs
index a579baa..e2f1f1a 100644
--- a/crates/shirabe/src/package/package.rs
+++ b/crates/shirabe/src/package/package.rs
@@ -6,7 +6,6 @@ use chrono::{DateTime, Utc};
 use indexmap::{IndexMap, IndexSet};
 
 use shirabe_external_packages::composer::pcre::Preg;
-use shirabe_external_packages::composer::util::ComposerMirror;
 use shirabe_php_shim::{E_USER_DEPRECATED, LogicException, PhpMixed, strpos, trigger_error};
 
 use crate::package::BasePackage;
@@ -16,6 +15,7 @@ use crate::package::PackageInterface;
 use crate::package::version::VersionParser;
 use crate::repository::RepositoryInterfaceHandle;
 use crate::repository::RepositoryInterfaceWeakHandle;
+use crate::util::ComposerMirror;
 
 /// Mirror entry, e.g. `['url' => 'https://...', 'preferred' => true]`.
 #[derive(Debug, Clone)]
@@ -484,12 +484,7 @@ impl Package {
                         Some(self.pretty_version.as_str()),
                     )
                 } else if url_type == "source" && r#type == Some("git") {
-                    ComposerMirror::process_git_url(
-                        &mirror.url,
-                        &self.name,
-                        &url,
-                        r#type.unwrap_or(""),
-                    )
+                    ComposerMirror::process_git_url(&mirror.url, &self.name, &url, r#type)
                 } else if url_type == "source" && r#type == Some("hg") {
                     ComposerMirror::process_hg_url(
                         &mirror.url,