fix(build): Typed git vars were unassigned

Author: in03

src/proxima/app/package.py

@@ -55,8 +55,8 @@ def __init__(self, package_name: str, package_path: str):
         self.package_name = package_name
         self.package_path = package_path
 
-        self.git_sha: str | None
-        self.git_url: str | None
+        self.git_sha: str | None = None
+        self.git_url: str | None = None
 
         try:
             self.repo = Repo(self.package_path, search_parent_directories=True)