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

refs/find_refs.rs

@@ -69,7 +69,7 @@ impl GitBare {
         // Sort direction
         let sort_prefix = match SortDirection::try_from(request.sort_direction) {
             Ok(SortDirection::Asc) => "",
-            Ok(SortDirection::Desc) | _ => "-",
+            _ => "-",
         };
         args.push(format!("--sort={sort_prefix}refname"));
 

refs/update_refs.rs

@@ -53,12 +53,13 @@ impl GitBare {
             })?;
         }
         drop(child.stdin.take());
-        let output = child.wait_with_output().map_err(|e| {
-            crate::error::GitError::CommandFailed {
-                status_code: None,
-                stderr: e.to_string(),
-            }
-        })?;
+        let output =
+            child
+                .wait_with_output()
+                .map_err(|e| crate::error::GitError::CommandFailed {
+                    status_code: None,
+                    stderr: e.to_string(),
+                })?;
 
         let stderr = String::from_utf8_lossy(&output.stderr).into_owned();
         if !output.status.success() {