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, 4 insertions, 4 deletions

diff --git a/crates/shirabe/src/repository/vcs/forgejo_driver.rs b/crates/shirabe/src/repository/vcs/forgejo_driver.rs
index 35497d9..0c7e201 100644
--- a/crates/shirabe/src/repository/vcs/forgejo_driver.rs
+++ b/crates/shirabe/src/repository/vcs/forgejo_driver.rs
@@ -718,12 +718,12 @@ impl crate::repository::vcs::VcsDriverInterface for ForgejoDriver {
         ForgejoDriver::get_tags(self)
     }
 
-    fn get_dist(&self, identifier: &str) -> anyhow::Result<Option<IndexMap<String, String>>> {
-        Ok(ForgejoDriver::get_dist(self, identifier))
+    fn get_dist(&self, identifier: &str) -> Option<IndexMap<String, String>> {
+        ForgejoDriver::get_dist(self, identifier)
     }
 
-    fn get_source(&self, identifier: &str) -> anyhow::Result<IndexMap<String, String>> {
-        Ok(ForgejoDriver::get_source(self, identifier))
+    fn get_source(&self, identifier: &str) -> IndexMap<String, String> {
+        ForgejoDriver::get_source(self, identifier)
     }
 
     fn get_url(&self) -> String {