Polishing first-boot UX: better splash placement + post-bootstrap notification.

Splash:
  Shifted the logo + text block up by half a logo-height.  GRUB's menu
  renders centred over the splash; the previous placement put the icon
  directly behind the menu entries.

First-boot summary:
  wrolpi-bootstrap.sh now accumulates a short list of notable actions
  (partition created, Postgres cluster set up, DB initialised) and
  writes them to /tmp/wrolpi-firstboot-summary.txt.  A new XDG autostart
  (wrolpi-firstboot-notify) reads that file once XFCE comes up and shows
  a zenity dialog telling the user what just happened — answering the
  "wait, what did this thing just do to my USB drive?" question.

Subsequent boots where the bootstrap is a no-op write no summary file,
so the dialog only appears the boot it actually matters.  /tmp is tmpfs,
so the file is also naturally per-boot.

Adds zenity to the package list (not pulled by --apt-recommends false).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

debian-live-config/config/includes.chroot/etc/xdg/autostart/wrolpi-firstboot-notify.desktop

@@ -0,0 +1,7 @@
+[Desktop Entry]
+Type=Application
+Name=WROLPi First-Boot Notification
+Comment=Show a summary of what WROLPi bootstrap did on first boot
+Exec=/usr/local/bin/wrolpi-firstboot-notify
+StartupNotify=false
+NoDisplay=true

debian-live-config/config/includes.chroot/usr/local/bin/wrolpi-firstboot-notify

@@ -0,0 +1,23 @@
+#!/bin/sh
+# Surface the first-boot bootstrap summary as a zenity dialog once the
+# XFCE session is up.
+#
+# wrolpi-bootstrap.service writes /tmp/wrolpi-firstboot-summary.txt when
+# it does notable work (creates the persistence partition, initialises
+# the Postgres cluster, runs the DB schema migration).  This script —
+# autostarted via /etc/xdg/autostart/wrolpi-firstboot-notify.desktop —
+# reads it, shows the contents to the user, and removes the file.
+#
+# /tmp is tmpfs, so the file is naturally per-boot.  Uneventful boots
+# (where bootstrap was a no-op) leave nothing to display.
+
+F=/tmp/wrolpi-firstboot-summary.txt
+[ -f "$F" ] || exit 0
+
+if command -v zenity >/dev/null 2>&1; then
+  zenity --info --width=520 --title="Welcome to WROLPi" --text="$(cat "$F")"
+elif command -v notify-send >/dev/null 2>&1; then
+  notify-send -t 30000 "WROLPi setup complete" "$(cat "$F")"
+fi
+
+rm -f "$F"

debian-live-config/config/includes.chroot/usr/local/sbin/wrolpi-bootstrap.sh

@@ -36,6 +36,17 @@ progress() {
   log "$1"
 }
 
+# Accumulate human-readable notes about anything non-trivial we did this
+# boot.  If anything ends up in $SUMMARY by end-of-run we write it to a
+# file under /tmp/ that the wrolpi user's XFCE autostart picks up to show
+# a zenity dialog (see /usr/local/bin/wrolpi-firstboot-notify).  /tmp is
+# tmpfs so the file is naturally per-boot; subsequent uneventful boots
+# show no dialog.
+SUMMARY=""
+SUMMARY_FILE=/tmp/wrolpi-firstboot-summary.txt
+note_action() { SUMMARY="${SUMMARY}- $1
+"; }
+
 progress "Preparing WROLPi..."
 
 # --- Detect Live vs Installed -------------------------------------------
@@ -105,6 +116,8 @@ if [ -n "$BOOT_DRIVE" ]; then
     fi
     progress "Formatting $PERSIST_PART as ext4..."
     mkfs.ext4 -L persistence -F "$PERSIST_PART"
+    PERSIST_SIZE=$(lsblk -bno SIZE "$PERSIST_PART" 2>/dev/null | numfmt --to=iec --suffix=B || echo "?")
+    note_action "Created persistence partition ${PERSIST_PART} (${PERSIST_SIZE}) on ${BOOT_DRIVE}"
   fi
 
   # Mount the persistence partition + lay out the on-disk structure.
@@ -183,6 +196,7 @@ fi
 if ! pg_lsclusters -h | awk '{print $1,$2}' | grep -q "^${PG_VERSION} main$"; then
   progress "Setting up Postgres cluster..."
   pg_createcluster "${PG_VERSION}" main
+  note_action "Set up PostgreSQL ${PG_VERSION} cluster at /media/wrolpi/config/postgresql/"
 fi
 progress "Starting Postgres..."
 systemctl start "postgresql@${PG_VERSION}-main.service"
@@ -192,6 +206,7 @@ systemctl start "postgresql@${PG_VERSION}-main.service"
 if ! sudo -iu postgres psql -lqt | cut -d \| -f 1 | grep -qw wrolpi; then
   progress "Initializing WROLPi database (this can take a minute)..."
   /opt/wrolpi/scripts/initialize_api_db.sh
+  note_action "Initialized the WROLPi database"
 fi
 
 # --- Certificates -------------------------------------------------------
@@ -227,5 +242,19 @@ progress "Starting WROLPi services..."
 systemctl enable wrolpi-api.service wrolpi-app.service wrolpi-kiwix.service
 systemctl start --no-block wrolpi-api.service wrolpi-app.service wrolpi-kiwix.service
 
+# If we did anything notable, leave a summary for the XFCE autostart to
+# show as a zenity dialog once the user lands on the desktop.
+if [ -n "$SUMMARY" ]; then
+  cat > "$SUMMARY_FILE" <<EOF
+WROLPi finished setting itself up:
+
+$SUMMARY
+These persist between reboots:
+  /media/wrolpi          — your library (videos, archives, zims, ...)
+  /media/wrolpi/config   — configuration + Postgres data
+EOF
+  chmod 0644 "$SUMMARY_FILE"
+fi
+
 progress "WROLPi is ready."
 log "bootstrap complete"

debian-live-config/config/package-lists/wrolpi.list.chroot

@@ -90,5 +90,6 @@ vim
 vlc
 wget
 wpasupplicant
+zenity
 zim-tools
 zlib1g-dev