fix(repository): run lazy initialization in count/has_package

PHP's ArrayRepository::count()/hasPackage() call $this->initialize(),
which late-binds to the concrete repository class and lazily loads its
packages. The Rust pass-throughs skipped that: they ran ArrayRepository's
stub initialize instead, returning 0/false and marking the repository
initialized with an empty package list, which made ensure_initialized()
skip the real initialization forever after.

Take &mut self in RepositoryInterface::count/has_package so the lazy
repositories (Filesystem, Platform, Composer) can guard with their real
initialize, and return Result from has_package since that initialization
can fail (PHP propagates the exception). InstallerInterface::is_installed
and InstallationManager::is_package_installed/mark_alias_installed
propagate the same way, which also resolves the TODO(phase-d) markers on
Package/Path/Artifact/Vcs repositories about initialization errors being
swallowed.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

1 files changed, 6 insertions, 6 deletions

diff --git a/crates/shirabe/tests/repository/composite_repository_test.rs b/crates/shirabe/tests/repository/composite_repository_test.rs
index 5fa0fb8d..60408b5d 100644
--- a/crates/shirabe/tests/repository/composite_repository_test.rs
+++ b/crates/shirabe/tests/repository/composite_repository_test.rs
@@ -13,16 +13,16 @@ fn array_repo(packages: Vec<PackageInterfaceHandle>) -> RepositoryInterfaceHandl
 
 #[test]
 fn test_has_package() {
-    let repo = CompositeRepository::new(vec![
+    let mut repo = CompositeRepository::new(vec![
         array_repo(vec![get_package("foo", "1")]),
         array_repo(vec![get_package("bar", "1")]),
     ]);
 
-    assert!(repo.has_package(get_package("foo", "1")));
-    assert!(repo.has_package(get_package("bar", "1")));
+    assert!(repo.has_package(get_package("foo", "1")).unwrap());
+    assert!(repo.has_package(get_package("bar", "1")).unwrap());
 
-    assert!(!repo.has_package(get_package("foo", "2")));
-    assert!(!repo.has_package(get_package("bar", "2")));
+    assert!(!repo.has_package(get_package("foo", "2")).unwrap());
+    assert!(!repo.has_package(get_package("bar", "2")).unwrap());
 }
 
 #[test]
@@ -111,7 +111,7 @@ fn test_add_repository() {
 
 #[test]
 fn test_count() {
-    let repo = CompositeRepository::new(vec![
+    let mut repo = CompositeRepository::new(vec![
         array_repo(vec![get_package("foo", "1")]),
         array_repo(vec![get_package("bar", "1")]),
     ]);