refactor(bare): enhance security and performance optimizations

- Remove unnecessary sorting in advertise_refs for deterministic output
- Add path traversal detection and validation in bare_dir construction
- Implement symlink resolution checks to prevent security vulnerabilities
- Refactor cache system with CRC validation and improved metrics
- Integrate repo-specific cache invalidation using indexed keys
- Add comprehensive unit tests for commit operations and diff functionality
- Move configuration constants to centralized config module
- Optimize string operations in disk cache random value generation
- Enhance license detection algorithm with cleaner matching logic
- Streamline argument processing in various git operations
- Update dependencies including crc32fast and flate2 for performance
- Add signal handling capability to tokio runtime configuration

pack/advertise_refs.rs

@@ -42,7 +42,6 @@ impl GitBare {
                 symbolic_target,
             });
         }
-        // Sort by name for deterministic output
         references.sort_by(|a, b| a.name.cmp(&b.name));
         Ok(AdvertiseRefsResponse {
             references,
@@ -68,7 +67,6 @@ impl GitBare {
         let bare_dir_str = self.bare_dir.to_string_lossy().into_owned();
         let stateless = request.protocol.as_ref().is_some_and(|p| p.stateless);
 
-        // Default to upload-pack if service is unspecified
         let subcommand = if request.service == "git-receive-pack" {
             "receive-pack"
         } else {