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

remote/mirror.rs

@@ -113,14 +113,14 @@ impl GitBare {
             ])
             .output();
 
-        if let Ok(out) = head_output {
-            if !out.status.success() {
-                tracing::warn!(
-                    repo = %self.bare_dir.display(),
-                    stderr = %String::from_utf8_lossy(&out.stderr).trim(),
-                    "failed to auto-set remote HEAD"
-                );
-            }
+        if let Ok(out) = head_output
+            && !out.status.success()
+        {
+            tracing::warn!(
+                repo = %self.bare_dir.display(),
+                stderr = %String::from_utf8_lossy(&out.stderr).trim(),
+                "failed to auto-set remote HEAD"
+            );
         }
 
         Ok(UpdateRemoteMirrorResponse {