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/03-reterminal_drivers.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+# Step 03: Install reTerminal DM drivers (Seeed device-tree overlays)
+
+step_03_reterminal_drivers() {
+  if [[ -z "$RETERMINAL_REPO_URL" ]]; then
+    log "Skipping reTerminal drivers (RETERMINAL_REPO_URL not set)"
+    return 0
+  fi
+  local repo="/tmp/seeed-linux-dtoverlays"
+  log "Cloning seeed-linux-dtoverlays ..."
+  git clone --depth 1 "$RETERMINAL_REPO_URL" "$repo"
+  log "Running reTerminal.sh --device $RETERMINAL_DEVICE ..."
+  if ( cd "$repo" && "$repo/scripts/reTerminal.sh" --device "$RETERMINAL_DEVICE" ); then
+    log "reTerminal DM drivers installed (reboot will apply)"
+  else
+    log "WARNING: reTerminal.sh failed; display/touch may still work"
+  fi
+  rm -rf "$repo"
+}