feat: resolve TODOs unblocked by package handle get_repository

PackageInterfaceHandle::get_repository and handle upcasts have been
available since the recent Rc<RefCell<_>> handle refactors; wire them
at sites still carrying TODO(phase-c) markers.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

1 files changed, 8 insertions, 4 deletions

diff --git a/crates/shirabe/src/command/package_discovery_trait.rs b/crates/shirabe/src/command/package_discovery_trait.rs
index d656d83..f036103 100644
--- a/crates/shirabe/src/command/package_discovery_trait.rs
+++ b/crates/shirabe/src/command/package_discovery_trait.rs
@@ -614,10 +614,14 @@ pub trait PackageDiscoveryTrait {
                         message: format!(
                             "Package {} exists in {} and {} which has a higher repository priority. The packages from the higher priority repository do not match your minimum-stability and are therefore not installable. That repository is canonical so the lower priority repo's packages are not installable. See https://getcomposer.org/repoprio for details and assistance.",
                             name,
-                            // TODO(phase-c): the originating repository names need the handle's
-                            // repository back-reference (phase-c handoff item #1).
-                            "a higher priority repository",
-                            "a lower priority repository",
+                            all_repos_package
+                                .get_repository()
+                                .map(|r| r.get_repo_name())
+                                .unwrap_or_default(),
+                            package
+                                .get_repository()
+                                .map(|r| r.get_repo_name())
+                                .unwrap_or_default(),
                         ),
                         code: 0,
                     }