chore(copyright): add copyright headers to all source files

diff/changed_paths.rs

@@ -1,3 +1,5 @@
+//! Copyright (c) 2022-2026 GitDataAi All rights reserved.
+
 use crate::bare::GitBare;
 use crate::error::GitResult;
 use crate::pb::*;

diff/get_commit_diff.rs

@@ -1,3 +1,5 @@
+//! Copyright (c) 2022-2026 GitDataAi All rights reserved.
+
 use crate::bare::GitBare;
 use crate::error::{GitError, GitResult};
 use crate::pb::{GetCommitDiffRequest, GetDiffRequest, GetDiffResponse};

diff/get_diff.rs

@@ -1,3 +1,5 @@
+//! Copyright (c) 2022-2026 GitDataAi All rights reserved.
+
 use std::collections::HashMap;
 
 use crate::bare::GitBare;

diff/get_diff_stats.rs

@@ -1,3 +1,5 @@
+//! Copyright (c) 2022-2026 GitDataAi All rights reserved.
+
 use crate::bare::GitBare;
 use crate::error::{GitError, GitResult};
 use crate::pb::GetDiffStatsRequest;

diff/get_patch.rs

@@ -1,3 +1,5 @@
+//! Copyright (c) 2022-2026 GitDataAi All rights reserved.
+
 use crate::bare::GitBare;
 use crate::error::{GitError, GitResult};
 use crate::pb::{GetPatchRequest, GetPatchResponse};

diff/mod.rs

@@ -1,3 +1,5 @@
+//! Copyright (c) 2022-2026 GitDataAi All rights reserved.
+
 pub mod changed_paths;
 pub mod get_commit_diff;
 pub mod get_diff;

diff/raw.rs

@@ -1,3 +1,5 @@
+//! Copyright (c) 2022-2026 GitDataAi All rights reserved.
+
 use crate::bare::GitBare;
 use crate::error::GitResult;
 use crate::pb::*;