feat(git): refactor Git commands to use async/await pattern

This update modifies several Git command functions to utilize the async/await
pattern, enhancing performance and responsiveness during operations. The changes
allow for non-blocking execution of commands, improving the overall user experience.

- Converted multiple Git command functions to async
- Added error handling for async operations
- Updated related tests to support async execution

.claude/settings.local.json

@@ -96,7 +96,10 @@
       "Bash(identify src-tauri/icons/GitCat.ico)",
       "Bash(python3 -c \"import PIL; print\\(PIL.__version__\\)\")",
       "Bash(python3 *)",
-      "Bash(xxd -l 16 src-tauri/icons/GitCat.ico)"
+      "Bash(xxd -l 16 src-tauri/icons/GitCat.ico)",
+      "Bash(pkg-config --exists openssl)",
+      "Bash(sudo apt-get install -y libssl-dev pkg-config)",
+      "Bash(dpkg -L libssl3t64)"
     ]
   }
 }