refactor(repository): make read methods fallible and take &mut self

Change RepositoryInterface and WritableRepositoryInterface read methods
(find_package, find_packages, get_packages, load_packages, search,
get_providers, get_canonical_packages) to take &mut self and return
anyhow::Result, so lazy-loading repositories such as ComposerRepository
can perform fallible I/O and mutate internal state on access. Update all
implementors and call sites to propagate the Result and pass mutable
references.

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

1 files changed, 20 insertions, 10 deletions

diff --git a/crates/shirabe/src/repository/installed_array_repository.rs b/crates/shirabe/src/repository/installed_array_repository.rs
index 1520497..2d3965b 100644
--- a/crates/shirabe/src/repository/installed_array_repository.rs
+++ b/crates/shirabe/src/repository/installed_array_repository.rs
@@ -68,7 +68,9 @@ impl WritableRepositoryInterface for InstalledArrayRepository {
         todo!()
     }
 
-    fn get_canonical_packages(&self) -> Vec<crate::package::PackageInterfaceHandle> {
+    fn get_canonical_packages(
+        &mut self,
+    ) -> anyhow::Result<Vec<crate::package::PackageInterfaceHandle>> {
         todo!()
     }
 
@@ -96,35 +98,43 @@ impl RepositoryInterface for InstalledArrayRepository {
         todo!()
     }
     fn find_package(
-        &self,
+        &mut self,
         _name: &str,
         _constraint: FindPackageConstraint,
-    ) -> Option<BasePackageHandle> {
+    ) -> anyhow::Result<Option<BasePackageHandle>> {
         todo!()
     }
     fn find_packages(
-        &self,
+        &mut self,
         _name: &str,
         _constraint: Option<FindPackageConstraint>,
-    ) -> Vec<BasePackageHandle> {
+    ) -> anyhow::Result<Vec<BasePackageHandle>> {
         todo!()
     }
-    fn get_packages(&self) -> Vec<BasePackageHandle> {
+    fn get_packages(&mut self) -> anyhow::Result<Vec<BasePackageHandle>> {
         todo!()
     }
     fn load_packages(
-        &self,
+        &mut self,
         _package_name_map: IndexMap<String, Option<AnyConstraint>>,
         _acceptable_stabilities: IndexMap<String, i64>,
         _stability_flags: IndexMap<String, i64>,
         _already_loaded: IndexMap<String, IndexMap<String, PackageInterfaceHandle>>,
-    ) -> LoadPackagesResult {
+    ) -> anyhow::Result<LoadPackagesResult> {
         todo!()
     }
-    fn search(&self, _query: String, _mode: i64, _type: Option<String>) -> Vec<SearchResult> {
+    fn search(
+        &mut self,
+        _query: String,
+        _mode: i64,
+        _type: Option<String>,
+    ) -> anyhow::Result<Vec<SearchResult>> {
         todo!()
     }
-    fn get_providers(&self, _package_name: String) -> IndexMap<String, ProviderInfo> {
+    fn get_providers(
+        &mut self,
+        _package_name: String,
+    ) -> anyhow::Result<IndexMap<String, ProviderInfo>> {
         todo!()
     }
     fn get_repo_name(&self) -> String {