fix(git-bitbucket-driver): match PHP exception/fallibility semantics for fallback paths

VcsDriverInterface::get_source/get_dist were made fallible in the Rust
port even though PHP's are infallible, forcing GitBitbucketDriver's
fallback delegation to silently swallow errors via
unwrap_or_default()/ok().flatten(). Make the trait infallible to match
PHP, updating the mechanical Ok(...) wrapping in all implementors.

Also narrow attempt_clone_fallback's cleanup to only trigger on
RuntimeException, mirroring PHP's catch (\RuntimeException $e), using
the same downcast pattern already used by has_composer_file for
TransportException.

1 files changed, 2 insertions, 2 deletions

diff --git a/crates/shirabe/src/repository/vcs/vcs_driver_interface.rs b/crates/shirabe/src/repository/vcs/vcs_driver_interface.rs
index 5d2be04..fb10d0f 100644
--- a/crates/shirabe/src/repository/vcs/vcs_driver_interface.rs
+++ b/crates/shirabe/src/repository/vcs/vcs_driver_interface.rs
@@ -29,9 +29,9 @@ pub trait VcsDriverInterface: std::fmt::Debug {
 
     fn get_tags(&mut self) -> anyhow::Result<IndexMap<String, String>>;
 
-    fn get_dist(&self, identifier: &str) -> anyhow::Result<Option<IndexMap<String, String>>>;
+    fn get_dist(&self, identifier: &str) -> Option<IndexMap<String, String>>;
 
-    fn get_source(&self, identifier: &str) -> anyhow::Result<IndexMap<String, String>>;
+    fn get_source(&self, identifier: &str) -> IndexMap<String, String>;
 
     fn get_url(&self) -> String;