refactor(actor): implement Raft consensus algorithm for cluster leader election

- Add voting mechanism with term tracking and vote persistence
- Implement election triggering logic with majority vote counting
- Add primary/replica role transition handling with state management
- Integrate health check failure detection for automatic elections
- Refactor actor messaging system for distributed coordination
- Update repository registration to query cluster for existing primary
- Add broadcast mechanism for role change notifications
- Implement proper term comparison and duplicate request filtering
- Upgrade dependency versions including tokio-util for async utilities
- Optimize code formatting and line wrapping for improved readability
- Remove redundant blank lines and improve code structure consistency
- Enhance error logging and trace information for debugging purposes

refs/find_refs.rs

@@ -5,7 +5,10 @@ use crate::pb::*;
 
 impl GitBare {
     /// Find all refs pointing to a given OID.
-    pub fn find_refs_by_oid(&self, request: FindRefsByOidRequest) -> GitResult<FindRefsByOidResponse> {
+    pub fn find_refs_by_oid(
+        &self,
+        request: FindRefsByOidRequest,
+    ) -> GitResult<FindRefsByOidResponse> {
         crate::sanitize::validate_revision(&request.oid)?;
 
         let mut args = vec![
@@ -138,7 +141,8 @@ fn simple_glob_match(pattern: &str, name: &str) -> bool {
             star_pi = Some(pi);
             star_ni = ni;
             pi += 1;
-        } else if pi < pat_bytes.len() && ni < name_bytes.len()
+        } else if pi < pat_bytes.len()
+            && ni < name_bytes.len()
             && (pat_bytes[pi] == b'?' || pat_bytes[pi] == name_bytes[ni])
         {
             pi += 1;