feat(phase-c): resolve exception-handling phase-b TODOs

* Catch specific exception types instead of broad/placeholder handling.
* Drop the shim Countable trait.

1 files changed, 2 insertions, 4 deletions

diff --git a/crates/shirabe/src/repository/installed_repository.rs b/crates/shirabe/src/repository/installed_repository.rs
index 8b611ae..f6b9643 100644
--- a/crates/shirabe/src/repository/installed_repository.rs
+++ b/crates/shirabe/src/repository/installed_repository.rs
@@ -381,13 +381,11 @@ impl InstalledRepository {
     }
 }
 
-impl shirabe_php_shim::Countable for InstalledRepository {
-    fn count(&self) -> i64 {
+impl RepositoryInterface for InstalledRepository {
+    fn count(&self) -> anyhow::Result<usize> {
         self.inner.count()
     }
-}
 
-impl RepositoryInterface for InstalledRepository {
     fn get_repo_name(&self) -> String {
         let names: Vec<String> = self
             .inner