Update first-boot scripts and documentation to change display rotation from Right to Left for reTerminal DM. Enhance Plymouth theme configuration to ensure a single [Daemon] section is used. Update logging messages for clarity regarding boot order changes on Pi 5. Adjust README to reflect new rotation settings for one-shot scripts.

chromium-setup/emmc-provisioning/cloud-init/set-rotation-once.sh

@@ -1,6 +1,7 @@
 #!/bin/bash
-# One-shot: set reTerminal DM (labwc/Wayland) rotation to Right via wlr-randr, then remove self.
-# Runs as user pi at first login. Logs to /var/log/first-boot.log.
+# One-shot: set reTerminal DM (labwc/Wayland) rotation to Left via wlr-randr, then remove self.
+# Runs once as user pi at first login; deletes its autostart and this script so it never runs again.
+# Logs to /var/log/first-boot.log.
 FIRST_BOOT_LOG="/var/log/first-boot.log"
 log() { echo "[$(date -Iseconds)] [set-rotation-once] $*" >> "$FIRST_BOOT_LOG" 2>/dev/null || true; }
 
@@ -18,8 +19,8 @@ if [[ -z "$OUTPUT" ]]; then
 fi
 
 if [[ -n "$OUTPUT" ]] && command -v wlr-randr &>/dev/null; then
-  log "applying rotation right (transform 90) on $OUTPUT"
-  wlr-randr --output "$OUTPUT" --transform 90 2>&1 | while read -r line; do log "$line"; done
+  log "applying rotation left (transform 270) on $OUTPUT"
+  wlr-randr --output "$OUTPUT" --transform 270 2>&1 | while read -r line; do log "$line"; done
 else
   log "WARNING: wlr-randr not found or no output"
 fi