Added methods for unlocking and relocking rootfs to the ed module

app/ed.py

@@ -1,10 +1,17 @@
 # A simple line-oriented text editor for MicroPython/CircuitPython
 # implementing the POSIX 'ed' subset
-# Usage: from app.ed import edit
+# Usage: from app.ed import edit, unlock_rootfs, lock_rootfs
 # Created by Luxferre in 2025, released into public domain
 
 from deck.input import input
 
+MCU_STORAGE = False
+try:
+  import storage
+  MCU_STORAGE = True
+except:
+  pass
+
 class Ed:
   def __init__(self, filename=None):
     self.filename = filename
@@ -196,6 +203,14 @@ class Ed:
       except Exception as e:
         print(f"Exception occurred: {e}")
 
+def unlock_rootfs():
+  if MCU_STORAGE:
+    storage.remount("/", readonly=False)
+
+def lock_rootfs():
+  if MCU_STORAGE:
+    storage.remount("/", readonly=True)
+
 def edit(fname):
   editor = Ed(fname)
   editor.run()