Fix no permission

updater/update.py

@@ -149,13 +149,20 @@ def month_add(year: int, month: int, delta: int) -> tuple[int, int]:
     m = (m % 12) + 1
     return y, m
 
-def atomic_write(path: str, content: str):
+def atomic_write(path: str, content: str, mode: int = 0o644):
     os.makedirs(os.path.dirname(path), exist_ok=True)
-    fd, tmp_path = tempfile.mkstemp(prefix=os.path.basename(path) + ".", dir=os.path.dirname(path))
+
+    fd, tmp_path = tempfile.mkstemp(
+        prefix=os.path.basename(path) + ".",
+        dir=os.path.dirname(path),
+    )
     try:
         with os.fdopen(fd, "w", encoding="utf-8", newline="") as f:
             f.write(content)
+
+        os.chmod(tmp_path, mode)
         os.replace(tmp_path, path)
+        os.chmod(path, mode)
     finally:
         try:
             if os.path.exists(tmp_path):