Remove deprecated one-shot scripts and update first-boot configuration for improved provisioning</message>

<message>Delete obsolete one-shot scripts for setting screen rotation and wallpaper, as well as related Python and shell scripts. Update the first-boot configuration to streamline the provisioning process by removing references to these scripts. This cleanup enhances maintainability and focuses on the essential steps required for the first boot experience, ensuring a more efficient setup for users.

emmc-provisioning/cloud-init/fileserver/steps/11-oneshots.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+# Step 11: Install one-shot and per-login scripts
+
+step_11_oneshots() {
+  # Rotation: install set-rotation-at-login (re-applies kanshi config every login)
+  if [[ -n "$DSI_ROTATE" ]]; then
+    log "Rotation $DSI_ROTATE set via cmdline"
+    if curl -fsSL "${FILE_SERVER}/set-rotation-at-login.sh" -o "$PI_HOME/set-rotation-at-login.sh" 2>/dev/null; then
+      chmod 755 "$PI_HOME/set-rotation-at-login.sh"
+      chown "$PI_USER:$PI_USER" "$PI_HOME/set-rotation-at-login.sh"
+      if curl -fsSL "${FILE_SERVER}/set-rotation-at-login.desktop" -o /tmp/sral.desktop 2>/dev/null; then
+        sed "s|/home/pi|$PI_HOME|g" /tmp/sral.desktop > "$AUTOSTART/set-rotation-at-login.desktop"
+        chown "$PI_USER:$PI_USER" "$AUTOSTART/set-rotation-at-login.desktop"
+        rm -f /tmp/sral.desktop
+        log "set-rotation-at-login installed"
+      fi
+    fi
+  fi
+
+  # Additional one-shots from config
+  if [[ -n "$ONESHOT_SCRIPTS" ]]; then
+    for _name in $ONESHOT_SCRIPTS; do
+      install_oneshot "$_name" || true
+    done
+  else
+    log "No additional one-shot scripts"
+  fi
+}