diff --git a/README.md b/README.md
index d107177..ccad001 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,41 @@ U-Navigator ist als Unraid-Plugin machbar. Empfohlen wird ein hybrider Aufbau au
 
 Naechster sinnvoller Schritt:
 
-Unraid-Plugin-Paketierung fuer die bestehende Web-App und das Backend.
+Go-Backend oder gebuendelte Runtime, damit das Plugin nicht mehr von einer vorhandenen Node.js-Installation abhaengt.
+
+## Unraid Plugin installieren
+
+Plugin-URL:
+
+```text
+https://git.casaderoll.de/michael/Unraid-Navigator/raw/branch/main/u-navigator.plg
+```
+
+Installation per Unraid Terminal:
+
+```sh
+installplg https://git.casaderoll.de/michael/Unraid-Navigator/raw/branch/main/u-navigator.plg
+```
+
+Oder im WebGUI:
+
+```text
+Plugins -> Install Plugin -> URL einfuegen -> Install
+```
+
+Danach starten:
+
+```sh
+rc.u-navigator start
+```
+
+Status pruefen:
+
+```sh
+rc.u-navigator status
+```
+
+Wichtig: Dieser erste Plugin-Spike benoetigt `node` auf dem Unraid-System. Falls `rc.u-navigator start` meldet, dass Node.js fehlt, muss als naechster Schritt das Backend als Go-Binary gebaut oder Node.js separat bereitgestellt werden.
 
 ## Lokal starten
 
diff --git a/build-plugin.sh b/build-plugin.sh
new file mode 100755
index 0000000..06004de
--- /dev/null
+++ b/build-plugin.sh
@@ -0,0 +1,27 @@
+#!/bin/sh
+set -eu
+
+PLUGIN="u-navigator"
+VERSION="0.1.0"
+PKG_DIR="packages"
+WORK_DIR=".plugin-build"
+PKG_NAME="${PLUGIN}-${VERSION}.tgz"
+
+rm -rf "$WORK_DIR"
+mkdir -p "$WORK_DIR/usr/local/emhttp/plugins/${PLUGIN}/app" "$PKG_DIR"
+
+cp -R plugin-root/usr "$WORK_DIR/"
+cp package.json "$WORK_DIR/usr/local/emhttp/plugins/${PLUGIN}/app/"
+cp -R public "$WORK_DIR/usr/local/emhttp/plugins/${PLUGIN}/app/"
+cp -R server "$WORK_DIR/usr/local/emhttp/plugins/${PLUGIN}/app/"
+find "$WORK_DIR" -name "*.test.js" -delete
+chmod +x "$WORK_DIR/usr/local/emhttp/plugins/${PLUGIN}/scripts/rc.u-navigator"
+
+tar -czf "$PKG_DIR/$PKG_NAME" -C "$WORK_DIR" usr
+rm -rf "$WORK_DIR"
+
+MD5="$(md5 -q "$PKG_DIR/$PKG_NAME" 2>/dev/null || md5sum "$PKG_DIR/$PKG_NAME" | awk '{print $1}')"
+sed "s/__VERSION__/${VERSION}/g; s/__MD5__/${MD5}/g" u-navigator.plg.in > u-navigator.plg
+
+echo "Built $PKG_DIR/$PKG_NAME"
+echo "MD5 $MD5"
diff --git a/packages/u-navigator-0.1.0.tgz b/packages/u-navigator-0.1.0.tgz
new file mode 100644
index 0000000..963e76d
Binary files /dev/null and b/packages/u-navigator-0.1.0.tgz differ
diff --git a/plugin-root/usr/local/emhttp/plugins/u-navigator/U-Navigator.page b/plugin-root/usr/local/emhttp/plugins/u-navigator/U-Navigator.page
new file mode 100644
index 0000000..c4293d0
--- /dev/null
+++ b/plugin-root/usr/local/emhttp/plugins/u-navigator/U-Navigator.page
@@ -0,0 +1,39 @@
+Menu="Tools"
+Title="U-Navigator"
+Icon="folder-open"
+---
+<?PHP
+$port = 8088;
+?>
+<style>
+  .u-navigator-plugin {
+    display: grid;
+    gap: 12px;
+    min-height: calc(100vh - 170px);
+  }
+
+  .u-navigator-plugin iframe {
+    border: 1px solid var(--border-color, #d2d8df);
+    border-radius: 8px;
+    min-height: calc(100vh - 190px);
+    width: 100%;
+  }
+
+  .u-navigator-plugin .notice {
+    color: var(--text-muted, #677);
+    margin: 0;
+  }
+</style>
+<div class="u-navigator-plugin">
+  <p class="notice">
+    U-Navigator laeuft als lokaler Dienst auf Port <?=htmlspecialchars($port)?>.
+    Falls der Rahmen leer bleibt, pruefe den Dienst mit <code>rc.u-navigator status</code>.
+  </p>
+  <iframe id="u-navigator-frame" title="U-Navigator"></iframe>
+</div>
+<script>
+(() => {
+  const frame = document.getElementById('u-navigator-frame');
+  frame.src = `${window.location.protocol}//${window.location.hostname}:<?=htmlspecialchars($port)?>/`;
+})();
+</script>
diff --git a/plugin-root/usr/local/emhttp/plugins/u-navigator/scripts/rc.u-navigator b/plugin-root/usr/local/emhttp/plugins/u-navigator/scripts/rc.u-navigator
new file mode 100644
index 0000000..91996bd
--- /dev/null
+++ b/plugin-root/usr/local/emhttp/plugins/u-navigator/scripts/rc.u-navigator
@@ -0,0 +1,62 @@
+#!/bin/bash
+
+PLUGIN="u-navigator"
+APP_DIR="/usr/local/emhttp/plugins/${PLUGIN}/app"
+PID_FILE="/var/run/${PLUGIN}.pid"
+LOG_FILE="/var/log/${PLUGIN}.log"
+PORT="${U_NAV_PORT:-8088}"
+ROOTS="${U_NAV_ROOTS:-/mnt/user}"
+HOST="${U_NAV_HOST:-0.0.0.0}"
+
+is_running() {
+  [[ -f "$PID_FILE" ]] && kill -0 "$(cat "$PID_FILE")" 2>/dev/null
+}
+
+start() {
+  if is_running; then
+    echo "${PLUGIN} is already running with PID $(cat "$PID_FILE")"
+    return 0
+  fi
+
+  if ! command -v node >/dev/null 2>&1; then
+    echo "node is required but was not found. Install/provide Node.js before starting ${PLUGIN}."
+    return 1
+  fi
+
+  mkdir -p "$(dirname "$PID_FILE")"
+  U_NAV_ROOTS="$ROOTS" U_NAV_HOST="$HOST" PORT="$PORT" nohup node "${APP_DIR}/server/server.js" >>"$LOG_FILE" 2>&1 &
+  echo $! > "$PID_FILE"
+  echo "${PLUGIN} started on ${HOST}:${PORT} with roots ${ROOTS}"
+}
+
+stop() {
+  if ! is_running; then
+    rm -f "$PID_FILE"
+    echo "${PLUGIN} is not running"
+    return 0
+  fi
+
+  kill "$(cat "$PID_FILE")" 2>/dev/null || true
+  rm -f "$PID_FILE"
+  echo "${PLUGIN} stopped"
+}
+
+status() {
+  if is_running; then
+    echo "${PLUGIN} is running with PID $(cat "$PID_FILE")"
+  else
+    echo "${PLUGIN} is not running"
+    return 1
+  fi
+}
+
+case "$1" in
+  start) start ;;
+  stop) stop ;;
+  restart) stop; start ;;
+  status) status ;;
+  *)
+    echo "Usage: $0 {start|stop|restart|status}"
+    exit 2
+    ;;
+esac
diff --git a/server/server.js b/server/server.js
index 480db9b..6956997 100644
--- a/server/server.js
+++ b/server/server.js
@@ -226,9 +226,10 @@ function statusError(status, message) {
 
 if (import.meta.url === `file://${process.argv[1]}`) {
   const port = Number(process.env.PORT || 8088);
+  const host = process.env.U_NAV_HOST || process.env.HOST || '127.0.0.1';
   createApp({ env: process.env }).then((app) => {
-    http.createServer(app).listen(port, '127.0.0.1', () => {
-      console.log(`U-Navigator listening on http://127.0.0.1:${port}`);
+    http.createServer(app).listen(port, host, () => {
+      console.log(`U-Navigator listening on http://${host}:${port}`);
     });
   }).catch((error) => {
     console.error(error.message);
diff --git a/u-navigator.plg b/u-navigator.plg
new file mode 100644
index 0000000..0a71860
--- /dev/null
+++ b/u-navigator.plg
@@ -0,0 +1,51 @@
+<!DOCTYPE PLUGIN [
+<!ENTITY name "u-navigator">
+<!ENTITY author "michael">
+<!ENTITY version "0.1.0">
+<!ENTITY package "&name;-&version;.tgz">
+]>
+<PLUGIN name="&name;" author="&author;" version="&version;" pluginURL="https://git.casaderoll.de/michael/Unraid-Navigator/raw/branch/main/u-navigator.plg">
+
+<CHANGES>
+### &version;
+- Initial U-Navigator plugin spike.
+- Installs WebGUI page, Node.js prototype backend, in-app window manager and drag-and-drop file navigator.
+</CHANGES>
+
+<FILE Name="/boot/config/plugins/&name;/&package;">
+<URL>https://git.casaderoll.de/michael/Unraid-Navigator/raw/branch/main/packages/&package;</URL>
+<MD5>9d6e248cb70c803f04bf491b06520764</MD5>
+</FILE>
+
+<FILE Run="/bin/bash">
+<INLINE>
+mkdir -p /boot/config/plugins/&name;
+tar -xzf /boot/config/plugins/&name;/&package; -C /
+chmod +x /usr/local/emhttp/plugins/&name;/scripts/rc.u-navigator
+ln -sf /usr/local/emhttp/plugins/&name;/scripts/rc.u-navigator /usr/local/sbin/rc.u-navigator
+echo ""
+echo "-----------------------------------------------------------"
+echo " &name; &version; has been installed."
+echo ""
+echo " Start:  rc.u-navigator start"
+echo " Stop:   rc.u-navigator stop"
+echo " Status: rc.u-navigator status"
+echo ""
+echo " Note: This prototype requires Node.js to be available on Unraid."
+echo "-----------------------------------------------------------"
+echo ""
+</INLINE>
+</FILE>
+
+<FILE Run="/bin/bash" Method="remove">
+<INLINE>
+rc.u-navigator stop 2>/dev/null || true
+rm -f /usr/local/sbin/rc.u-navigator
+rm -rf /usr/local/emhttp/plugins/&name;
+rm -rf /boot/config/plugins/&name;
+rm -f /var/run/&name;.pid
+echo "&name; has been removed."
+</INLINE>
+</FILE>
+
+</PLUGIN>
diff --git a/u-navigator.plg.in b/u-navigator.plg.in
new file mode 100644
index 0000000..bf3dce8
--- /dev/null
+++ b/u-navigator.plg.in
@@ -0,0 +1,51 @@
+<!DOCTYPE PLUGIN [
+<!ENTITY name "u-navigator">
+<!ENTITY author "michael">
+<!ENTITY version "__VERSION__">
+<!ENTITY package "&name;-&version;.tgz">
+]>
+<PLUGIN name="&name;" author="&author;" version="&version;" pluginURL="https://git.casaderoll.de/michael/Unraid-Navigator/raw/branch/main/u-navigator.plg">
+
+<CHANGES>
+### &version;
+- Initial U-Navigator plugin spike.
+- Installs WebGUI page, Node.js prototype backend, in-app window manager and drag-and-drop file navigator.
+</CHANGES>
+
+<FILE Name="/boot/config/plugins/&name;/&package;">
+<URL>https://git.casaderoll.de/michael/Unraid-Navigator/raw/branch/main/packages/&package;</URL>
+<MD5>__MD5__</MD5>
+</FILE>
+
+<FILE Run="/bin/bash">
+<INLINE>
+mkdir -p /boot/config/plugins/&name;
+tar -xzf /boot/config/plugins/&name;/&package; -C /
+chmod +x /usr/local/emhttp/plugins/&name;/scripts/rc.u-navigator
+ln -sf /usr/local/emhttp/plugins/&name;/scripts/rc.u-navigator /usr/local/sbin/rc.u-navigator
+echo ""
+echo "-----------------------------------------------------------"
+echo " &name; &version; has been installed."
+echo ""
+echo " Start:  rc.u-navigator start"
+echo " Stop:   rc.u-navigator stop"
+echo " Status: rc.u-navigator status"
+echo ""
+echo " Note: This prototype requires Node.js to be available on Unraid."
+echo "-----------------------------------------------------------"
+echo ""
+</INLINE>
+</FILE>
+
+<FILE Run="/bin/bash" Method="remove">
+<INLINE>
+rc.u-navigator stop 2>/dev/null || true
+rm -f /usr/local/sbin/rc.u-navigator
+rm -rf /usr/local/emhttp/plugins/&name;
+rm -rf /boot/config/plugins/&name;
+rm -f /var/run/&name;.pid
+echo "&name; has been removed."
+</INLINE>
+</FILE>
+
+</PLUGIN>