refactor: 移除未使用的代码和注释掉的辅助函数

src/git/mod.rs

@@ -642,12 +642,16 @@ impl GitRepo {
                     name: name.to_string(),
                     target: oid.to_string(),
                     message: commit.message().unwrap_or("").to_string(),
+                    time: commit.time().seconds(),
                 });
             }
 
             true
         })?;
 
+        // Sort tags by time (newest first)
+        tags.sort_by(|a, b| b.time.cmp(&a.time));
+
         Ok(tags)
     }
 
@@ -832,6 +836,7 @@ pub struct TagInfo {
     pub name: String,
     pub target: String,
     pub message: String,
+    pub time: i64,
 }
 
 /// Repository status summary