diff --git a/packaging/DEBIAN/postinst b/packaging/DEBIAN/postinst
index 5eb3c16..1411ae1 100644
--- a/packaging/DEBIAN/postinst
+++ b/packaging/DEBIAN/postinst
@@ -1,11 +1,14 @@
 #!/bin/bash
 # postinst: freenas-proxmox v3.x install/upgrade script
-# Installs the TrueNAS custom storage plugin for Proxmox VE.
-# No patches, no internet access required.
+# Installs the TrueNAS custom storage plugin and UI panel for Proxmox VE.
+# No patches to PVE core files — only adds our own files and one <script> line.
 set -e
 
-PLUGIN_SRC="/usr/share/freenas-proxmox/TrueNAS.pm"
+INSTALL_DIR="/usr/share/freenas-proxmox"
 PLUGIN_DST="/usr/share/perl5/PVE/Storage/Custom/TrueNAS.pm"
+JS_DST="/usr/share/pve-manager/js/truenas-storage.js"
+TPL="/usr/share/pve-manager/index.html.tpl"
+SCRIPT_TAG='    <script type="text/javascript" src="/pve2/js/truenas-storage.js?ver=[% version %]"></script>'
 LOG_FILE="/var/log/freenas-proxmox-install.log"
 
 log() {
@@ -15,21 +18,34 @@ log() {
 install_plugin() {
     log "Installing ${PLUGIN_DST}"
     mkdir -p "$(dirname "$PLUGIN_DST")"
-    cp "$PLUGIN_SRC" "$PLUGIN_DST"
-    log "Plugin installed"
+    cp "${INSTALL_DIR}/TrueNAS.pm" "$PLUGIN_DST"
+}
+
+install_ui() {
+    log "Installing ${JS_DST}"
+    cp "${INSTALL_DIR}/truenas-storage.js" "$JS_DST"
+
+    if grep -qF 'truenas-storage.js' "$TPL" 2>/dev/null; then
+        log "index.html.tpl already has truenas-storage.js — skipping"
+        return 0
+    fi
+
+    log "Adding <script> tag to ${TPL}"
+    sed -i "/pvemanagerlib\.js/a\\${SCRIPT_TAG}" "$TPL"
 }
 
 restart_pve_services() {
     log "Restarting Proxmox VE services ..."
     pvedaemon restart && log "pvedaemon restarted"
     pveproxy restart  && log "pveproxy restarted"
-    log "Done. Refresh your Proxmox browser tab to load the updated UI."
+    log "Done. Refresh your Proxmox browser tab."
 }
 
 case "$1" in
     configure)
         log "Configuring freenas-proxmox (previous version: ${2:-none})"
         install_plugin
+        install_ui
         restart_pve_services
         ;;
     abort-upgrade|abort-remove|abort-deconfigure)
diff --git a/packaging/DEBIAN/postrm b/packaging/DEBIAN/postrm
index c0a2e1c..1ad352b 100644
--- a/packaging/DEBIAN/postrm
+++ b/packaging/DEBIAN/postrm
@@ -1,15 +1,25 @@
 #!/bin/bash
 # postrm: freenas-proxmox v3.x removal script
-# Removes the TrueNAS custom storage plugin for Proxmox VE.
 set -e
 
 PLUGIN_DST="/usr/share/perl5/PVE/Storage/Custom/TrueNAS.pm"
+JS_DST="/usr/share/pve-manager/js/truenas-storage.js"
+TPL="/usr/share/pve-manager/index.html.tpl"
 LOG_FILE="/var/log/freenas-proxmox-install.log"
 
 log() {
     echo "[freenas-proxmox] $*" | tee -a "$LOG_FILE"
 }
 
+remove_ui() {
+    rm -f "$JS_DST" && log "Removed ${JS_DST}"
+
+    if [ -f "$TPL" ] && grep -qF 'truenas-storage.js' "$TPL"; then
+        log "Removing <script> tag from ${TPL}"
+        sed -i '/truenas-storage\.js/d' "$TPL"
+    fi
+}
+
 restart_pve_services() {
     log "Restarting Proxmox VE services ..."
     pvedaemon restart && log "pvedaemon restarted"
@@ -19,15 +29,15 @@ restart_pve_services() {
 case "$1" in
     remove)
         log "Removing freenas-proxmox ..."
-        rm -f "$PLUGIN_DST"
-        log "Plugin removed"
+        rm -f "$PLUGIN_DST" && log "Removed ${PLUGIN_DST}"
+        remove_ui
         restart_pve_services
         log "freenas-proxmox removed. Refresh your Proxmox browser tab."
         ;;
     purge)
         log "Purging freenas-proxmox ..."
-        rm -f "$PLUGIN_DST"
-        rm -f "$LOG_FILE"
+        rm -f "$PLUGIN_DST" "$JS_DST" "$LOG_FILE"
+        [ -f "$TPL" ] && sed -i '/truenas-storage\.js/d' "$TPL"
         ;;
     upgrade|failed-upgrade|disappear|abort-upgrade|abort-remove|abort-deconfigure)
         ;;
diff --git a/ui/truenas-storage.js b/ui/truenas-storage.js
new file mode 100644
index 0000000..fd89a4e
--- /dev/null
+++ b/ui/truenas-storage.js
@@ -0,0 +1,108 @@
+// TrueNAS Custom Storage Plugin — Proxmox VE UI
+//
+// Registers the 'truenas' storage type in PVE's UI schema and defines the
+// configuration panel shown when adding or editing TrueNAS storage.
+//
+// Loaded by index.html.tpl after pvemanagerlib.js, so PVE.Utils is available.
+
+// Register TrueNAS in the storage type dropdown
+PVE.Utils.storageSchema.truenas = {
+    name: 'TrueNAS (ZFS/iSCSI)',
+    ipanel: 'TrueNASInputPanel',
+    faIcon: 'database',
+    backups: false,
+};
+
+Ext.define('PVE.storage.TrueNASInputPanel', {
+    extend: 'PVE.panel.StorageBase',
+
+    initComponent: function () {
+        let me = this;
+
+        // Column 1 — identity and credentials (left side)
+        me.column1 = [
+            {
+                xtype: me.isCreate ? 'proxmoxtextfield' : 'displayfield',
+                fieldLabel: gettext('TrueNAS Host'),
+                name: 'truenas_host',
+                allowBlank: false,
+                emptyText: gettext('hostname or IP address'),
+            },
+            {
+                xtype: 'proxmoxtextfield',
+                fieldLabel: gettext('API Key'),
+                name: 'truenas_api_key',
+                inputType: 'password',
+                allowBlank: !me.isCreate,
+                emptyText: me.isCreate
+                    ? gettext('Paste API key from TrueNAS UI')
+                    : gettext('unchanged — paste new key to change'),
+                listeners: {
+                    // On edit: don't submit unless the user types a new value
+                    afterrender: function (field) {
+                        if (!me.isCreate) {
+                            field.submitValue = false;
+                        }
+                    },
+                    change: function (field, value) {
+                        if (!me.isCreate) {
+                            field.submitValue = (value && value.length > 0);
+                        }
+                    },
+                },
+            },
+            {
+                xtype: me.isCreate ? 'proxmoxtextfield' : 'displayfield',
+                fieldLabel: gettext('Pool'),
+                name: 'truenas_pool',
+                allowBlank: false,
+                emptyText: gettext('ZFS pool name (e.g. tank)'),
+            },
+            {
+                xtype: 'proxmoxtextfield',
+                fieldLabel: gettext('Dataset'),
+                name: 'truenas_dataset',
+                allowBlank: true,
+                emptyText: gettext('Optional (e.g. proxmox)'),
+                deleteEmpty: !me.isCreate,
+            },
+        ];
+
+        // Column 2 — connection options (right side)
+        // Note: Nodes selector and Enable checkbox are prepended by StorageBase
+        me.column2 = [
+            {
+                xtype: 'proxmoxcheckbox',
+                fieldLabel: gettext('Use SSL'),
+                name: 'truenas_ssl',
+                checked: true,
+                uncheckedValue: 0,
+            },
+            {
+                xtype: 'proxmoxcheckbox',
+                fieldLabel: gettext('Verify SSL Certificate'),
+                name: 'truenas_ssl_verify',
+                checked: false,
+                uncheckedValue: 0,
+            },
+            {
+                xtype: 'proxmoxtextfield',
+                fieldLabel: gettext('Portal IP'),
+                name: 'truenas_portal_ip',
+                allowBlank: true,
+                emptyText: gettext('Optional — defaults to TrueNAS host'),
+                deleteEmpty: !me.isCreate,
+            },
+            {
+                xtype: 'proxmoxtextfield',
+                fieldLabel: gettext('Target IQN'),
+                name: 'truenas_target',
+                allowBlank: true,
+                emptyText: gettext('Optional — auto-discovered if blank'),
+                deleteEmpty: !me.isCreate,
+            },
+        ];
+
+        me.callParent();
+    },
+});