fix: skip Feishu notification when no diff is found

Removes the Feishu notification step when there are no code changes to review. The process now simply prints a skip message and exits to reduce unnecessary notifications.

ai_review/main.py

@@ -48,18 +48,7 @@ def main():
     diff_elapsed = time.time() - t_diff
     print(f"   ⏱️ 阶段耗时 - 获取Diff: {format_duration(diff_elapsed)}")
     if not diff.strip():
-        print("没有需要审查的代码变更，跳过。")
-        t_feishu = time.time()
-        send_feishu(
-            f"🤖 代码审查 - {project_name}/{branch}",
-            [
-                f"提交者: {committer}",
-                f"提交: {commit_sha_short} {commit_msg}",
-                "",
-                "✅ 没有需要审查的代码变更。",
-            ]
-        )
-        print(f"   ⏱️ 阶段耗时 - 飞书通知: {format_duration(time.time() - t_feishu)}")
+        print("没有需要审查的代码变更，跳过通知。")
         print(f"   ⏱️ 总耗时: {format_duration(time.time() - total_start)}")
         return