Revoke scoped credential policies before package downgrade

source/docs/framebridge.1

@@ -25,7 +25,7 @@ sudo apt install ./framebridge\-expanded_0.3.2~compat.20261027.1_amd64.deb
 fb connect
 .fi
 .SS Updating and removal
-Install an official update through the normal package manager when that update has been published. Normal removal stops package\-owned managed processes and can retain the user profile and encrypted connection material; it is not a credential\-forgetting operation. On systemd 255, package removal also revokes the administrative boot\-credential grant. After reinstalling, run fb connect interactively to provision that grant again; retained files alone do not restore startup. Use the explicit credentials forget action first when that is your intended outcome. Do not assume purge erases user\-profile data.
+Install an official update through the normal package manager when that update has been published. Normal removal stops package\-owned managed processes and can retain the user profile and encrypted connection material; it is not a credential\-forgetting operation. On systemd 255, package removal also revokes the administrative boot\-credential grant. After reinstalling, run fb connect interactively to provision that grant again; retained files alone do not restore startup. Use the explicit credentials forget action first when that is your intended outcome. Do not assume purge erases user\-profile data. An explicit downgrade also revokes administrative helper grants before the older package files replace the helper. Helper\-backed profiles require a new interactive connect with a compatible package before managed startup can be restored.
 .PP
 .nf
 sudo dpkg \-\-remove framebridge\-original\-expanded