fix: correct the divider for the memory, and check for the available memory

ui/utils.py

@@ -50,7 +50,12 @@ def _print_RAM_status() -> None:
     Print the current status of system RAM.
     """
     mem = psutil.virtual_memory()
+    gib = 1024 ** 3
     print(
-        f"[Info] System RAM: {mem.used / 1e9} / {mem.total / 1e9} GB ({mem.percent}%)"
+        (
+            "[Info] System RAM: "
+            f"Available {mem.available/gib:.2f} GB, "
+            f"{mem.used / gib:.2f} / {mem.total / gib:.2f} GB ({mem.percent}%)"
+        )
     )