Use SCRIPT_DIR, add sshpass and auto-mount workspaces, update flakes

bin/qvm-ssh

@@ -85,12 +85,15 @@ main() {
     local port
     port=$(get_ssh_port)
     
-    # Build SSH command
+    # Build SSH command with sshpass for automated password auth
     local ssh_cmd=(
+        sshpass -p root
         ssh
         -o StrictHostKeyChecking=no
         -o UserKnownHostsFile=/dev/null
         -o LogLevel=ERROR  # Suppress host key warnings
+        -o PubkeyAuthentication=no  # Use password auth (password: root)
+        -o PasswordAuthentication=yes
         -p "$port"
         root@localhost
     )