Give the user their .ssh directory back in the recovery script

Co-Authored-By: Claude Code <noreply@anthropic.com>

server/scripts/restore_ssh_access.cmd

@@ -2,6 +2,7 @@
 REM Puts the SSH access back that a deleted home directory took with it: the key the website logs in with, in the
 REM home of the root user and in the home of the Administrator. Run it as Administrator on the box, for example
 REM over RDP. The cleanup job puts the key back by itself from then on.
+setlocal EnableDelayedExpansion
 set KEY=ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJDweEH8bhZAHVaAedhTVDb2j/oMEn3vm97xCwCw9LC9 root@nowhere.wirs.ing cygwin-2222
 
 if not exist C:\msys2\home\root\.ssh mkdir C:\msys2\home\root\.ssh
@@ -10,4 +11,12 @@ if not exist C:\msys2\home\root\.ssh mkdir C:\msys2\home\root\.ssh
 if not exist C:\Users\Administrator\.ssh mkdir C:\Users\Administrator\.ssh
 >> C:\Users\Administrator\.ssh\authorized_keys echo %KEY%
 
+REM The user owns their .ssh, so that they can add keys of their own.
+for /f "tokens=5" %%i in ('findstr /b "root:" C:\msys2\etc\passwd') do set SID=%%i
+set SID=!SID:*,=!
+if defined SID (
+    icacls C:\msys2\home\root\.ssh /grant *!SID!:(OI)(CI)F /t
+    icacls C:\msys2\home\root\.ssh /setowner *!SID!
+)
+
 echo The SSH access is back.