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, 5 insertions, 5 deletions

diff --git a/crates/shirabe/src/repository/composite_repository.rs b/crates/shirabe/src/repository/composite_repository.rs
index 9e5c9757..a9c55a0f 100644
--- a/crates/shirabe/src/repository/composite_repository.rs
+++ b/crates/shirabe/src/repository/composite_repository.rs
@@ -60,7 +60,7 @@ impl CompositeRepository {
 }
 
 impl RepositoryInterface for CompositeRepository {
-    fn count(&self) -> anyhow::Result<usize> {
+    fn count(&mut self) -> anyhow::Result<usize> {
         let mut total = 0;
         for repository in &self.repositories {
             total += repository.count()?;
@@ -78,13 +78,13 @@ impl RepositoryInterface for CompositeRepository {
         format!("composite repo ({})", names.join(", "))
     }
 
-    fn has_package(&self, package: PackageInterfaceHandle) -> bool {
+    fn has_package(&mut self, package: PackageInterfaceHandle) -> anyhow::Result<bool> {
         for repository in &self.repositories {
-            if repository.has_package(package.clone()) {
-                return true;
+            if repository.has_package(package.clone())? {
+                return Ok(true);
             }
         }
-        false
+        Ok(false)
     }
 
     fn find_package(