run as root for USB access, chmod cleanup for Jenkins

USB device access requires root. Use reuseNode to share the parent
workspace, and chmod 777 in post-always to ensure Jenkins can clean
up root-owned build artifacts.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: adeebshihadeh

Jenkinsfile

@@ -74,20 +74,22 @@ pipeline {
           agent {
             docker {
               image 'python:3.12'
-              args '--privileged --volume /dev/bus/usb:/dev/bus/usb --volume /var/run/dbus:/var/run/dbus --net host'
+              args '--user=root --privileged --volume /dev/bus/usb:/dev/bus/usb --volume /var/run/dbus:/var/run/dbus --net host'
               reuseNode true
             }
           }
-          environment {
-            HOME = "${env.WORKSPACE}"
-          }
           steps {
             timeout(time: 10, unit: 'MINUTES') {
               retry (3) {
                 sh './setup.sh && . .venv/bin/activate && export PYTHONWARNINGS=error && scons && python3 ./tests/hitl/reset_jungles.py'
               }
             }
           }
+          post {
+            always {
+              sh 'chmod -R 777 . || true'
+            }
+          }
         }
 
         stage('parallel tests') {
@@ -121,16 +123,18 @@ pipeline {
               agent {
                 docker {
                   image 'python:3.12'
-                  args '--privileged --volume /dev/bus/usb:/dev/bus/usb --volume /var/run/dbus:/var/run/dbus --net host'
+                  args '--user=root --privileged --volume /dev/bus/usb:/dev/bus/usb --volume /var/run/dbus:/var/run/dbus --net host'
                   reuseNode true
                 }
               }
-              environment {
-                HOME = "${env.WORKSPACE}"
-              }
               steps {
                 sh './setup.sh && . .venv/bin/activate && export PYTHONWARNINGS=error && pytest ./tests/som/test_bootkick.py'
               }
+              post {
+                always {
+                  sh 'chmod -R 777 . || true'
+                }
+              }
             }
             */
           }