refactor(server): replace custom remote clients with macro-based implementation

- Replaced manual remote client functions with remote_client! macro for archive, blame, branch, commit, and diff services
- Simplified remote client creation logic using declarative macro approach
- Maintained same functionality while reducing code duplication across services

security(bare): enhance path traversal protection with comprehensive validation

- Added early relative_path validation to prevent path traversal attacks
- Implemented unified path validation to avoid TOCTOU race conditions
- Enhanced canonicalization checks for both existing and non-existent paths
- Added detailed logging for path traversal detection attempts

feat(cache): migrate from CLruCache to Moka with TTL and invalidation support

- Replaced clru dependency with moka for improved caching capabilities
- Added 300-second time-to-live for cache entries
- Implemented repository-specific cache invalidation mechanism
- Enhanced cache operations with thread-safe async support

refactor(commit): improve security validation for commit operations

- Added ref name validation to prevent command injection in cherry_pick_commit
- Implemented revision validation for commit selectors
- Added comprehensive input validation for create_commit parameters
- Enhanced file path validation to prevent traversal

tree/mod.rs

@@ -6,11 +6,16 @@ pub mod list_tree;
 use crate::bare::GitBare;
 use crate::pb::{self, RecentCommit, object_selector};
 
-pub(crate) fn resolve_revision(sel: &Option<pb::ObjectSelector>) -> String {
+pub(crate) fn resolve_revision(
+    sel: &Option<pb::ObjectSelector>,
+) -> Result<String, crate::error::GitError> {
     match sel.as_ref().and_then(|s| s.selector.as_ref()) {
-        Some(object_selector::Selector::Oid(oid)) => oid.hex.clone(),
-        Some(object_selector::Selector::Revision(name)) => name.revision.clone(),
-        None => "HEAD".into(),
+        Some(object_selector::Selector::Oid(oid)) => Ok(oid.hex.clone()),
+        Some(object_selector::Selector::Revision(name)) => {
+            crate::sanitize::validate_revision(&name.revision)?;
+            Ok(name.revision.clone())
+        }
+        None => Ok("HEAD".into()),
     }
 }