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

actor/message.rs

@@ -159,7 +159,6 @@ pub enum GitNodeMessage {
     TriggerElection,
 
     // ── Raft consensus messages ──────────────────────────────
-
     /// AppendEntries RPC: Leader → Follower log replication.
     #[rpc]
     AppendEntries(AppendEntriesRequest, RpcReplyPort<AppendEntriesResponse>),
@@ -418,7 +417,16 @@ impl BytesConvertable for AppendEntriesRequest {
             });
         }
         let leader_commit = read_u64(&bytes, &mut offset);
-        Self { version, term, leader_id, leader_grpc_addr, prev_log_index, prev_log_term, entries, leader_commit }
+        Self {
+            version,
+            term,
+            leader_id,
+            leader_grpc_addr,
+            prev_log_index,
+            prev_log_term,
+            entries,
+            leader_commit,
+        }
     }
 }
 
@@ -457,7 +465,14 @@ impl BytesConvertable for AppendEntriesResponse {
         let match_index = read_u64(&bytes, &mut offset);
         let conflict_index = read_u64(&bytes, &mut offset);
         let conflict_term = read_u64(&bytes, &mut offset);
-        Self { version, term, success, match_index, conflict_index, conflict_term }
+        Self {
+            version,
+            term,
+            success,
+            match_index,
+            conflict_index,
+            conflict_term,
+        }
     }
 }
 
@@ -502,7 +517,11 @@ impl BytesConvertable for ReadIndexResponse {
         let commit_index = read_u64(&bytes, &mut offset);
         let leader_term = read_u64(&bytes, &mut offset);
         let is_leader = bytes.get(offset).copied().unwrap_or(0) == 1;
-        Self { commit_index, leader_term, is_leader }
+        Self {
+            commit_index,
+            leader_term,
+            is_leader,
+        }
     }
 }