refactor(build): reformat code and add tonic health dependency

- Reformatted build script with proper indentation and line breaks
- Added tonic-health dependency to Cargo.toml and updated lock file
- Improved error handling in disk cache with concurrent deletion checks
- Refactored conditional chains using && and let expressions
- Reformatted struct initialization and function parameter lists
- Added proper spacing and alignment in language stats processing
- Improved assertion formatting in test cases
- Reorganized import statements and code layout in multiple files
- Updated metrics functions with better parameter handling and formatting

server/remote.rs

@@ -12,11 +12,16 @@ impl RemoteService for GitksService {
     ) -> Result<tonic::Response<FindRemoteRepositoryResponse>, tonic::Status> {
         let m = crate::metrics::RequestMetrics::new("gitks.RemoteService/FindRemoteRepository");
         let inner = request.into_inner();
-        let span = tracing::info_span!("remote.find_remote_repository", remote_url = %inner.remote_url);
+        let span =
+            tracing::info_span!("remote.find_remote_repository", remote_url = %inner.remote_url);
         let _enter = span.enter();
         tracing::info!(remote_url = %inner.remote_url, "find_remote_repository");
         let resp = find_remote_repository(inner).map_err(super::into_status)?;
-        tracing::info!(refs_count = resp.refs.len(), exists = resp.exists, "find_remote_repository done");
+        tracing::info!(
+            refs_count = resp.refs.len(),
+            exists = resp.exists,
+            "find_remote_repository done"
+        );
         m.record("ok");
         Ok(tonic::Response::new(resp))
     }
@@ -27,7 +32,8 @@ impl RemoteService for GitksService {
     ) -> Result<tonic::Response<FindRemoteRootRefResponse>, tonic::Status> {
         let m = crate::metrics::RequestMetrics::new("gitks.RemoteService/FindRemoteRootRef");
         let inner = request.into_inner();
-        let span = tracing::info_span!("remote.find_remote_root_ref", remote_url = %inner.remote_url);
+        let span =
+            tracing::info_span!("remote.find_remote_root_ref", remote_url = %inner.remote_url);
         let _enter = span.enter();
         tracing::info!(remote_url = %inner.remote_url, "find_remote_root_ref");
         let resp = find_remote_root_ref(inner).map_err(super::into_status)?;