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

repository/search_files.rs

@@ -67,7 +67,6 @@ impl GitBare {
         let mut results = Vec::new();
 
         for line in stdout.lines() {
-            // Format: path:line:col:matched_text
             if let Some((path_and_rest, matched)) = line.rsplit_once(':') {
                 let prefix_parts: Vec<&str> = path_and_rest.rsplitn(3, ':').collect();
                 if prefix_parts.len() >= 3
@@ -144,7 +143,6 @@ impl GitBare {
                 continue;
             }
 
-            // Simple substring/case-insensitive matching for file names
             let query = &request.query;
             let matched = if query.is_empty() {
                 true