diff --git a/nodejs/app.js b/nodejs/app.js
index d4c3143..faeb43a 100755
--- a/nodejs/app.js
+++ b/nodejs/app.js
@@ -61,6 +61,11 @@ app.set('trust proxy', 1);
 app.set('views', path.join(__dirname, 'views'));
 app.set('view engine', 'ejs');
 
+// Per-app values for the shared UI shell (views/top.ejs + views/bottom.ejs).
+// Set as an app local so every res.render has it, including routes that don't
+// spread the routers' `values` object.
+app.locals.ui = require('./utils/ui');
+
 // Have express server static content( images, CSS, browser JS) from the public
 // local folder. maxAge is short since this is the app's own JS/CSS, which
 // changes on every deploy and isn't cache-busted/fingerprinted.
diff --git a/nodejs/package-lock.json b/nodejs/package-lock.json
index 385b615..3a54984 100644
--- a/nodejs/package-lock.json
+++ b/nodejs/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "t42-sso-manager",
-  "version": "1.3.2",
+  "version": "1.4.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "t42-sso-manager",
-      "version": "1.3.2",
+      "version": "1.4.0",
       "license": "MIT",
       "dependencies": {
         "@fortawesome/fontawesome-free": "^7.3.0",
@@ -24,7 +24,7 @@
         "express-rate-limit": "^8.5.2",
         "extend": "^3.0.2",
         "jq-repeat": "^2.2.0",
-        "jquery": "^3.7.1",
+        "jquery": "^4.0.0",
         "jsonwebtoken": "^9.0.3",
         "ldapts": "^8.1.8",
         "lru-cache": "^11.5.1",
@@ -4853,9 +4853,9 @@
       }
     },
     "node_modules/jquery": {
-      "version": "3.7.1",
-      "resolved": "https://registry.npmjs.org/jquery/-/jquery-3.7.1.tgz",
-      "integrity": "sha512-m4avr8yL8kmFN8psrbFFFmB/If14iN5o9nw/NgnnM+kybDJpRsAynV2BsfpTYrTRysYUdADVD7CkUUizgkpLfg==",
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/jquery/-/jquery-4.0.0.tgz",
+      "integrity": "sha512-TXCHVR3Lb6TZdtw1l3RTLf8RBWVGexdxL6AC8/e0xZKEpBflBsjh9/8LXw+dkNFuOyW9B7iB3O1sP7hS0Kiacg==",
       "license": "MIT"
     },
     "node_modules/js-tokens": {
diff --git a/nodejs/package.json b/nodejs/package.json
index 948511f..7e0630f 100755
--- a/nodejs/package.json
+++ b/nodejs/package.json
@@ -36,7 +36,7 @@
     "express-rate-limit": "^8.5.2",
     "extend": "^3.0.2",
     "jq-repeat": "^2.2.0",
-    "jquery": "^3.7.1",
+    "jquery": "^4.0.0",
     "jsonwebtoken": "^9.0.3",
     "ldapts": "^8.1.8",
     "lru-cache": "^11.5.1",
diff --git a/nodejs/public/js/app.js b/nodejs/public/js/app.js
index c77cb04..97d7e3a 100755
--- a/nodejs/public/js/app.js
+++ b/nodejs/public/js/app.js
@@ -396,7 +396,7 @@ app.impersonate = (function(app){
 
 app.token = (function(app){
 	function list(name, callack){
-		if($.isFunction(name)){
+		if(typeof name === 'function'){
 			callack = name;
 			name = '';
 		}
diff --git a/nodejs/public/lib/js/app-base.js b/nodejs/public/lib/js/app-base.js
index 125717b..2b323a3 100644
--- a/nodejs/public/lib/js/app-base.js
+++ b/nodejs/public/lib/js/app-base.js
@@ -1,3 +1,12 @@
+// Shared client framework for the theta42 apps.
+//
+// This file is byte-identical across sso-manager-node, proxy and jump-host —
+// per-app behaviour comes from the server (the `ui` locals in views/top.ejs and
+// the /api/user/me response), never from edits to this file. Edit all three
+// copies together.
+//
+// jQuery 4 safe: no $.isFunction, no $.holdReady.
+
 var app = {};
 
 app.pubsub = (function(){
@@ -45,7 +54,7 @@ app.pubsub = (function(){
 app.socket = (function(app){
 	// $.getScript('/socket.io/socket.io.js')
 	// <script type="text/javascript" src="/socket.io/socket.io.js"></script>
-	
+
 	var socket;
 	$(document).ready(function(){
 		socket = io({
@@ -75,11 +84,17 @@ app.socket = (function(app){
 app.api = (function(app){
 	var baseURL = '/api/'
 
-	function post(url, data, callback){
-		if (!$.isFunction(callback)) {
-			return new Promise((resolve, reject) => {
+	// post/put/delete are dual-mode: pass a callback for the node-style
+	// (error, data, status) form, or omit it to get a Promise that resolves
+	// with the parsed body and rejects with the error body. get/options return
+	// the jqXHR, which is itself thenable, so `await app.api.get(...)` works.
+
+	function body(method, url, data, callback){
+		if(typeof callback !== 'function'){
+			return new Promise(function(resolve, reject){
 				$.ajax({
-					type: 'POST', url: baseURL+url,
+					type: method,
+					url: baseURL+url,
 					headers: { 'auth-token': app.auth.getToken() },
 					data: JSON.stringify(data),
 					contentType: 'application/json; charset=utf-8',
@@ -88,9 +103,11 @@ app.api = (function(app){
 			});
 		}
 		return $.ajax({
-			type: 'POST',
+			type: method,
 			url: baseURL+url,
-			headers:{ 'auth-token': app.auth.getToken() },
+			headers:{
+				'auth-token': app.auth.getToken()
+			},
 			data: JSON.stringify(data),
 			contentType: "application/json; charset=utf-8",
 			dataType: "json",
@@ -104,40 +121,20 @@ app.api = (function(app){
 		});
 	}
 
+	function post(url, data, callback){
+		return body('POST', url, data, callback);
+	}
+
 	function put(url, data, callback){
-		if (!$.isFunction(callback)) {
-			return new Promise((resolve, reject) => {
-				$.ajax({
-					type: 'PUT', url: baseURL+url,
-					headers: { 'auth-token': app.auth.getToken() },
-					data: JSON.stringify(data),
-					contentType: 'application/json; charset=utf-8',
-					dataType: 'json',
-				}).done(resolve).fail(function(xhr){ reject(xhr.responseJSON || {}); });
-			});
-		}
-		return $.ajax({
-			type: 'PUT',
-			url: baseURL+url,
-			headers:{ 'auth-token': app.auth.getToken() },
-			data: JSON.stringify(data),
-			contentType: "application/json; charset=utf-8",
-			dataType: "json",
-			complete: function(res, text){
-				callback(
-					text !== 'success' ? res.statusText : null,
-					JSON.parse(res.responseText),
-					res.status
-				);
-			}
-		});
+		return body('PUT', url, data, callback);
 	}
 
 	function remove(url, callback){
-		if (!$.isFunction(callback)) {
-			return new Promise((resolve, reject) => {
+		if(typeof callback !== 'function'){
+			return new Promise(function(resolve, reject){
 				$.ajax({
-					type: 'DELETE', url: baseURL+url,
+					type: 'DELETE',
+					url: baseURL+url,
 					headers: { 'auth-token': app.auth.getToken() },
 					contentType: 'application/json; charset=utf-8',
 					dataType: 'json',
@@ -147,7 +144,9 @@ app.api = (function(app){
 		return $.ajax({
 			type: 'DELETE',
 			url: baseURL+url,
-			headers:{ 'auth-token': app.auth.getToken() },
+			headers:{
+				'auth-token': app.auth.getToken()
+			},
 			contentType: "application/json; charset=utf-8",
 			dataType: "json",
 			complete: function(res, text){
@@ -202,7 +201,10 @@ app.api = (function(app){
 })(app)
 
 app.auth = (function(app){
-	var user = {};
+	// One in-flight/cached GET /api/user/me per page load. Every gating
+	// decision (nav items, per-view forceLogin, group-required elements) reads
+	// this same promise instead of re-fetching.
+	var userPromise = null;
 
 	function setToken(token){
 		localStorage.setItem('APIToken', token);
@@ -216,35 +218,70 @@ app.auth = (function(app){
 		try{
 			return await app.api.get('user/me');
 		}catch(error){
-			if(error?.status === 401) return null;
-			throw error
+			if(error && error.status === 401) return null;
+			throw error;
 		}
 	}
 
+	// Cached current user, or false when there's no token at all. Callers that
+	// need a fresh copy (after a login or a profile change) pass force.
+	function loadUser(force){
+		if(force || !userPromise){
+			userPromise = getToken() ? getUser() : Promise.resolve(null);
+			userPromise = userPromise.then(function(user){
+				app.auth.user = app.auth.perms = user || null;
+				return user;
+			});
+		}
+		return userPromise;
+	}
+
+	// The apps report group membership two ways: sso-manager-node returns LDAP
+	// DNs in `memberOf`, the OIDC clients return plain CNs in `groups`. Both
+	// normalise to a list of CNs. `isAdmin` (the clients' effective-rights flag)
+	// is exposed as a synthetic `admin` group so one gating model covers both.
+	function groupCNs(user){
+		var raw = (user && (user.memberOf || user.groups)) || [];
+		if(!Array.isArray(raw)) raw = [raw];
+		var names = raw.map(function(group){
+			return String(group).split(',')[0].replace(/^cn=/i, '');
+		});
+		if(user && user.isAdmin && names.indexOf('admin') === -1) names.push('admin');
+		return names;
+	}
+
 	async function memberOf(groupNameToFind, user){
-		try{
-			user = user || await app.auth.asyncUser;
-			groupNameToFind = Array.isArray(groupNameToFind) ? groupNameToFind : [groupNameToFind]
+		user = user || await loadUser();
+		if(!user) return false;
+		groupNameToFind = Array.isArray(groupNameToFind) ? groupNameToFind : [groupNameToFind];
 
-			for(let group of user.memberOf){
-				group = group.split(',ou=groups')[0].replace('cn=', '');
-				if(groupNameToFind.includes(group)) return true;
-			}
-
-			return false;
-
-		}catch(error){
-			throw(error);
-		}
+		return groupCNs(user).some(function(group){
+			return groupNameToFind.includes(group);
+		});
 	}
 
-	async function isLoggedIn(){
-		if(getToken()){
-			user = await app.auth.asyncUser;
-			return user;
-		}else{
-			return false;
+	// True when the logged-in user is a global admin (per user/me). Sync — only
+	// meaningful once isLoggedIn/forceLogin has resolved.
+	function isAdmin(){
+		return !!(app.auth.perms && app.auth.perms.isAdmin);
+	}
+
+	// Dual-mode: returns a Promise resolving to the user (or false), and calls
+	// an optional node-style callback with the same result.
+	function isLoggedIn(callback){
+		var promise = loadUser().then(function(user){
+			return user || false;
+		});
+
+		if(typeof callback === 'function'){
+			promise.then(function(user){
+				callback(null, user);
+			}, function(error){
+				callback(error, false);
+			});
 		}
+
+		return promise;
 	}
 
 	function logIn(args, callback){
@@ -252,62 +289,123 @@ app.auth = (function(app){
 			if(data.login){
 				setToken(data.token);
 			}
+			loadUser(true);
 			callback(error, !!data.token);
 		});
 	}
 
+	// Clears the session only — the caller decides where to go next (the nav's
+	// Log Out button uses ui.logoutRedirect).
 	function logOut(callback){
 		localStorage.removeItem('APIToken');
-		location.replace(`/login${location.href.replace(location.origin, '')}`);
-		callback();
+		userPromise = null;
+		app.auth.user = app.auth.perms = null;
+		if(typeof callback === 'function') callback();
 	}
 
+	// Constrain a redirect target to a same-origin absolute path. Rejects
+	// absolute URLs (open redirect), protocol-relative "//host" and "/\host",
+	// and non-path schemes like "javascript:" (XSS). Falls back to "/".
+	function safeInternalPath(path){
+		if(typeof path !== 'string' || path.charAt(0) !== '/'
+				|| path.charAt(1) === '/' || path.charAt(1) === '\\'){
+			return '/';
+		}
+		return path;
+	}
+
+	// Consume an app token handed back by the OIDC callback via the URL
+	// fragment (#token=…&redirect=…). Stores it, strips the fragment, and
+	// forwards to the intended page. Returns true if a token was consumed.
+	function consumeTokenFragment(){
+		if(!location.hash) return false;
+		var params = new URLSearchParams(location.hash.replace(/^#/, ''));
+		var token = params.get('token');
+		if(!token) return false;
+
+		setToken(token);
+		// redirect comes from the URL fragment (attacker-controllable); only
+		// allow a same-origin path so it can't become an open redirect / XSS.
+		var redirect = safeInternalPath(params.get('redirect') || '/');
+		// Drop the token from the address bar before navigating on.
+		history.replaceState(null, '', location.pathname + location.search);
+		window.location.href = redirect;
+		return true;
+	}
+
+	// Page-level gate. jQuery 4 removed $.holdReady, so an unauthenticated or
+	// unauthorised user is kept off the page by a redirect / an error panel
+	// rather than by pausing document ready.
+	//
+	// `requiredGroups` is a group CN or an OR-list of them; the synthetic
+	// `admin` group covers the OIDC clients' isAdmin flag.
 	async function forceLogin(requiredGroups){
-		$.holdReady(true);
-		if(!await app.auth.isLoggedIn()) app.auth.logOut(function(){});
+		var user = await loadUser();
+
+		if(!user){
+			logOut(function(){});
+			location.replace('/login?redirect=' + encodeURIComponent(
+				location.pathname + location.search
+			));
+			return false;
+		}
 
 		if(user.onboardingRequired && location.pathname !== '/onboarding'){
 			location.replace('/onboarding');
+			return false;
 		}
 
-		if(requiredGroups){
-			if(!await memberOf(requiredGroups)){
-				console.log("Does not have permission!!!")
-				app.util.actionMessage(
-					`<h1>
-						<i class="fa-solid fa-triangle-exclamation"></i>
-						<b>You do not have permission to be here.</b>
-						<i class="fa-solid fa-triangle-exclamation"></i>
-					</h1>`,
-					$('#spa-shell'),
-					'danger',
-				);
-				throw new Error("User does not have permission");
-			}
+		if(requiredGroups && !await memberOf(requiredGroups, user)){
+			app.util.actionMessage(
+				`<h1>
+					<i class="fa-solid fa-triangle-exclamation"></i>
+					<b>You do not have permission to be here.</b>
+					<i class="fa-solid fa-triangle-exclamation"></i>
+				</h1>`,
+				$('#spa-shell'),
+				'danger',
+			);
+			throw new Error("User does not have permission");
 		}
 
-		$.holdReady(false);	
+		return user;
 	}
 
+	// Where to go after a successful login: the ?redirect= query param, or the
+	// legacy /login/<path> suffix form, constrained to a same-origin path.
 	function logInRedirect(){
-		window.location.href = location.href.replace(location.origin+'/login', '') || '/'
+		var params = new URLSearchParams(location.search);
+		var target = params.get('redirect')
+			|| location.href.replace(location.origin + '/login', '').split('?')[0]
+			|| '/';
+		window.location.href = safeInternalPath(target);
 	}
 
 	return {
 		getToken: getToken,
 		setToken: setToken,
+		getUser: getUser,
+		loadUser: loadUser,
+		groupCNs: groupCNs,
+		memberOf: memberOf,
+		isAdmin: isAdmin,
 		isLoggedIn: isLoggedIn,
+		safeInternalPath: safeInternalPath,
+		consumeTokenFragment: consumeTokenFragment,
+		user: null,
+		perms: null,
 		logIn: logIn,
 		logOut: logOut,
 		forceLogin,
 		logInRedirect,
-		getUser,
-		memberOf,
 	}
 
 })(app);
-app.auth.asyncUser = app.auth.getUser();
 
+// Back-compat alias for views that awaited the cached user directly.
+Object.defineProperty(app.auth, 'asyncUser', {
+	get: function(){ return app.auth.loadUser(); },
+});
 
 app.user = (function(app){
 	function list(callback){
@@ -338,6 +436,72 @@ app.user = (function(app){
 
 })(app);
 
+// Local (app-managed) permissions and groups. Only the OIDC-client apps serve
+// these endpoints; the calls are inert elsewhere.
+app.permission = (function(app){
+	function list(callback){
+		app.api.get('permission/', function(error, data){
+			callback(error, data);
+		});
+	}
+
+	function subjects(callback){
+		app.api.get('permission/subjects', function(error, data){
+			callback(error, data);
+		});
+	}
+
+	function add(args, callback){
+		app.api.post('permission/', args, function(error, data){
+			callback(error, data);
+		});
+	}
+
+	function remove(id, callback){
+		app.api.delete('permission/' + encodeURIComponent(id), function(error, data){
+			callback(error, data);
+		});
+	}
+
+	return {list, subjects, add, remove};
+
+})(app);
+
+app.group = (function(app){
+	function list(callback){
+		app.api.get('group/', function(error, data){
+			callback(error, data);
+		});
+	}
+
+	function add(args, callback){
+		app.api.post('group/', args, function(error, data){
+			callback(error, data);
+		});
+	}
+
+	function remove(name, callback){
+		app.api.delete('group/' + encodeURIComponent(name), function(error, data){
+			callback(error, data);
+		});
+	}
+
+	function addMember(name, username, callback){
+		app.api.post('group/' + encodeURIComponent(name) + '/members', {username}, function(error, data){
+			callback(error, data);
+		});
+	}
+
+	function removeMember(name, username, callback){
+		app.api.delete('group/' + encodeURIComponent(name) + '/members/' + encodeURIComponent(username), function(error, data){
+			callback(error, data);
+		});
+	}
+
+	return {list, add, remove, addMember, removeMember};
+
+})(app);
+
 app.util = (function(app){
 
 	function getUrlParameter(name){
@@ -370,7 +534,10 @@ app.util = (function(app){
 		}else{
 			if(type) $target.addClass('bg-' + type);
 
-			if(!message.includes('<button')) message += `
+			// Messages that bring their own buttons (actionConfirm) are left
+			// alone; everything else gets the standard dismiss button.
+			if(!message.includes('<button')) message = `
+				<span class="align-middle">${message}</span>
 				<button class="action-close btn btn-sm btn-outline-dark float-end">
 					<i class="fa-solid fa-xmark"></i>
 				</button>
@@ -415,8 +582,11 @@ app.util = (function(app){
 		for (let {name, value} of $(this).serializeArray()) {
 			console.log(name, value)
 			if (obj[name] === undefined) {
-				if (!value 
+				if (!value
 					&& !$(this).parent().find(`[name="${name}"]`).attr('value')
+					// Keep empty <textarea>s so a cleared field is submitted (and
+					// can reset a list, e.g. the per-host IP/header controls).
+					&& !$(this).filter(`textarea[name="${name}"]`).length
 				){
 					continue;
 				}
@@ -466,21 +636,36 @@ app.util = (function(app){
 	}
 })(app);
 
-$( document ).ready(async function(){
+// Reveal every .group-required-<cn> element the current user's groups entitle
+// them to. Elements carrying .group-required start hidden (styles.css), so a
+// user who is in no groups — or who isn't logged in — simply never sees them.
+app.auth.applyGroupVisibility = function(user){
+	var groups = app.auth.groupCNs(user);
+	if(!groups.length) return;
 
-	// Show content if the user has the correct group
-	for(let group of (await app.auth.asyncUser)?.memberOf || []){
+	var style = document.getElementById('group-required-rules');
+	if(!style){
+		style = document.createElement('style');
+		style.id = 'group-required-rules';
+		document.head.appendChild(style);
+	}
+
+	for(var group of groups){
 		try{
-			group = group.split(',ou=groups')[0].replace('cn=', '');
-
-			const sheet = document.styleSheets[0];
-			const selector = `.group-required-${group}`;
-			const cssText = `${selector} { display: revert !important; }`;
-			sheet.insertRule(cssText, sheet.cssRules.length);
+			style.sheet.insertRule(
+				`.group-required-${CSS.escape(group)} { display: revert !important; }`,
+				style.sheet.cssRules.length
+			);
 		}catch(error){
-			
+			// A group whose CN isn't a usable CSS identifier just gates nothing.
 		}
 	}
+};
+
+$( document ).ready(async function(){
+
+	// Show content the user's groups entitle them to.
+	app.auth.applyGroupVisibility(await app.auth.loadUser());
 
 	$('div.row').fadeIn('slow'); //show the page
 
@@ -538,8 +723,8 @@ function formAJAX(btn){
 		app.util.actionMessage('Please fix the form errors.', $form, 'danger')
 		return false;
 	}
-	
-	app.util.actionMessage( 
+
+	app.util.actionMessage(
 		`<div class="spinner-border" role="status">
 			<span class="visually-hidden">Loading...</span>
 		</div>`,
@@ -567,4 +752,3 @@ function formAJAX(btn){
 		}
 	});
 }
-
diff --git a/nodejs/public/lib/js/val.js b/nodejs/public/lib/js/val.js
index b13923a..fd3da8f 100644
--- a/nodejs/public/lib/js/val.js
+++ b/nodejs/public/lib/js/val.js
@@ -61,7 +61,7 @@
 		//checks if empty to stop processing 
 		if(!isNaN(options) && value.length === 0) {
 		}else if(rule in settings.rule){
-			let message = settings.rule[rule].apply(this, [value, options]);
+			message = settings.rule[rule].apply(this, [value, options]);
 		}
 
 		this.validateMessage(message)
@@ -93,41 +93,109 @@
 
 }( jQuery ));
 
-$.validateSettings({
-	rule:{
-		ip: function( value ) {
-			value = value.split( '.' );
- 
-			if ( value.length != 4 ) {
-				return "Malformed IP";
-			}
- 
-			$.each( value, function( key, value ) {
-				if( value > 255 || value < 0 ) {
+// Host / target validation, mirrored from the backend (utils/hostname_validate.js):
+// a bare hostname or IPv4 address, no protocol / "/" / ":" / whitespace. The
+// incoming host may be a wildcard ("*.example.com"); the target may not.
+(function(){
+	var LABEL = /^[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?$/i;
+	// Either one bare label (Docker service names, /etc/hosts entries) or a
+	// dotted hostname with an alphabetic TLD.
+	var HOSTNAME = /^(?=.{1,253}$)(?:(?:[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?\.)+[a-z]{2,63}|[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?)$/i;
+	var FORBIDDEN = /[\s/:]/;
+
+	function isIPv4( value ) {
+		var parts = value.split( '.' );
+		if ( parts.length !== 4 ) return false;
+		return parts.every( function( p ) {
+			return /^(0|[1-9]\d{0,2})$/.test( p ) && Number( p ) <= 255;
+		});
+	}
+
+	// Incoming-host pattern: labels may be normal, "*" (one fragment), or "**"
+	// (any number of fragments, incl. a bare "**" global catch-all).
+	function isHostPattern( value ) {
+		if ( value.length > 253 ) return false;
+		return value.split( '.' ).every( function( l ) {
+			return l === '*' || l === '**' || LABEL.test( l );
+		});
+	}
+
+	function forbidden( value ) {
+		return FORBIDDEN.test( value ) || value.includes( '://' );
+	}
+
+	// Incoming host: IPv4 or a wildcard host pattern.
+	function checkHost( value ) {
+		if ( typeof value !== 'string' || value.length === 0 ) return "Required";
+		if ( forbidden( value ) ) return 'No protocol, "/", or ":"';
+		if ( isIPv4( value ) || isHostPattern( value ) ) return;
+		return "Enter a valid host or wildcard (*, **)";
+	}
+
+	// Downstream target: IPv4 or a strict hostname, no wildcard.
+	function checkTarget( value ) {
+		if ( typeof value !== 'string' || value.length === 0 ) return "Required";
+		if ( forbidden( value ) ) return 'No protocol, "/", or ":"';
+		if ( isIPv4( value ) || HOSTNAME.test( value ) ) return;
+		return "Enter a valid hostname or IP";
+	}
+
+	$.validateSettings({
+		rule:{
+			ip: function( value ) {
+				value = value.split( '.' );
+
+				if ( value.length != 4 ) {
 					return "Malformed IP";
 				}
-			});
-		},
 
-		host: function( value ) {
-			var reg = /^(?=.{1,255}$)[0-9A-Za-z](?:(?:[0-9A-Za-z]|-){0,61}[0-9A-Za-z])?(?:\.[0-9A-Za-z](?:(?:[0-9A-Za-z]|-){0,61}[0-9A-Za-z])?)*\.?$/;
-			if ( reg.test( value ) === false ) {
-				return "Invalid";
-			}
-		},
+				$.each( value, function( key, value ) {
+					if( value > 255 || value < 0 ) {
+						return "Malformed IP";
+					}
+				});
+			},
 
-		user: function( value ) {
-			var reg = /^[a-z0-9\_\-\@\.]{1,32}$/;
-			if ( reg.test( value ) === false ) {
-				return "Invalid";
-			}
-		},
- 
-		password: function( value ) {
-			var reg = /^(?=[^\d_].*?\d)\w(\w|[!@#$%]){1,48}/;
-			if ( reg.test( value ) === false ) {
-				return "Weak password, Try again";
+			// Incoming host name — hostname, IPv4, or wildcard pattern (*, **).
+			host: function( value ) {
+				return checkHost( value );
+			},
+
+			// Downstream target — hostname or IPv4, no wildcard.
+			target: function( value ) {
+				return checkTarget( value );
+			},
+
+			// Back-compat alias (no wildcard).
+			hostname: function( value ) {
+				return checkTarget( value );
+			},
+
+			user: function( value ) {
+				var reg = /^[a-z0-9\_\-\@\.]{1,32}$/;
+				if ( reg.test( value ) === false ) {
+					return "Invalid";
+				}
+			},
+
+			// Mirrors utils/password_policy.js: >= 8 chars, and either 12+ chars
+			// or at least 3 of {lowercase, uppercase, number, symbol}.
+			password: function( value ) {
+				if ( typeof value !== 'string' || value.length < 8 ) {
+					return "Password must be at least 8 characters";
+				}
+				if ( value.length >= 12 ) return;
+
+				var classes = 0;
+				if ( /[a-z]/.test( value ) ) classes++;
+				if ( /[A-Z]/.test( value ) ) classes++;
+				if ( /[0-9]/.test( value ) ) classes++;
+				if ( /[^A-Za-z0-9]/.test( value ) ) classes++;
+
+				if ( classes < 3 ) {
+					return "Use 3 of: lowercase, uppercase, number, symbol (or 12+ chars)";
+				}
 			}
 		}
-	}
-});
+	});
+})();
\ No newline at end of file
diff --git a/nodejs/routes/user.js b/nodejs/routes/user.js
index 663e348..c03dc3f 100755
--- a/nodejs/routes/user.js
+++ b/nodejs/routes/user.js
@@ -74,7 +74,17 @@ router.delete('/:uid', async function(req, res, next){
 
 router.get('/me', async function(req, res, next){
 	try{
-		return res.json(await User.get({uid: req.user.uid}));
+		const user = JSON.parse(JSON.stringify(await User.get({uid: req.user.uid})));
+
+		// The shared client framework gates the UI on a single effective-rights
+		// flag (the OIDC-client apps send the same key). Here "admin" means
+		// membership in app_sso_admin; group-level gating still reads memberOf.
+		const groups = (user.memberOf || []).map(function(dn){
+			return String(dn).split(',')[0].replace(/^cn=/i, '');
+		});
+		user.isAdmin = groups.includes('app_sso_admin');
+
+		return res.json(user);
 	}catch(error){
 		next(error);
 	}
diff --git a/nodejs/utils/ui.js b/nodejs/utils/ui.js
new file mode 100644
index 0000000..de8ebc2
--- /dev/null
+++ b/nodejs/utils/ui.js
@@ -0,0 +1,46 @@
+'use strict';
+
+// Per-app values for the shared UI shell (views/top.ejs + views/bottom.ejs).
+//
+// Those two partials are byte-identical across sso-manager-node, proxy and
+// jump-host — everything that differs between the apps lives here and is
+// exposed to every render as `ui` via app.locals (see app.js). Keep the key set
+// in sync across the three apps; a missing key is a render-time ReferenceError,
+// not a silent fallback.
+
+const conf = require('@simpleworkjs/conf');
+
+module.exports = {
+	// --- footer -------------------------------------------------------------
+	repoUrl: 'https://github.com/theta42/sso-manager-node',
+	licenseUrl: 'https://github.com/theta42/sso-manager-node/blob/master/LICENSE',
+	// In-app docs route (routes/docs.js). Apps without one point at the
+	// published docs site and set docsExternal.
+	docsUrl: '/docs',
+	docsExternal: false,
+	// Only sso-manager-node serves a Terms of Service page; null hides the link.
+	tosUrl: '/tos',
+
+	// --- header / nav -------------------------------------------------------
+	faviconUrl: conf.logo,
+	// Where the current-user chip links. null renders it as a plain span (for
+	// apps with no profile page).
+	profileUrl: '/profile',
+	// Where "Log Out" lands.
+	logoutRedirect: '/',
+	// Admin-only "a newer release is available" banner, backed by
+	// GET /api/update-check. Apps without that endpoint set false.
+	updateCheck: true,
+	updateLabel: 'SSO Manager',
+
+	// Nav items, in order. `groups` is an OR-list of group CNs that may see the
+	// item; an empty list means "always visible". Gating is done client-side by
+	// app-base.js, which reveals .group-required-<cn> for each group the user is
+	// in (plus the synthetic `admin` group when user/me reports isAdmin).
+	nav: [
+		{href: '/users', icon: 'fa-solid fa-users', label: 'Users', groups: ['app_sso_admin']},
+		{href: '/groups', icon: 'fa-solid fa-users-viewfinder', label: 'Groups', groups: ['app_sso_admin']},
+		{href: '/directory', icon: 'fa-solid fa-server', label: 'Directory', groups: ['app_sso_admin', 'app_sso_directory_admin']},
+		{href: '/executive', icon: 'fa-solid fa-gauge-high', label: 'Executive', groups: ['app_sso_admin']},
+	],
+};
diff --git a/nodejs/views/bottom.ejs b/nodejs/views/bottom.ejs
index 05dd604..a2dadd8 100755
--- a/nodejs/views/bottom.ejs
+++ b/nodejs/views/bottom.ejs
@@ -1,5 +1,8 @@
 		</div><!-- end spa-shell -->
 
+	<!-- Shared UI shell — byte-identical across sso-manager-node, proxy and
+	     jump-host. Everything per-app comes from `ui` (utils/ui.js, exposed via
+	     app.locals in app.js). Edit all three copies together. -->
 	<footer class="py-2 bg-dark text-light mt-4">
 		<div class="container-fluid d-flex flex-wrap justify-content-between align-items-center small gap-2">
 			<span class="d-flex align-items-center gap-2">
@@ -7,19 +10,21 @@
 					<img width="64" src="/static/img/theta42.svg"/>
 				</a>
 				&copy; <%- buildYear %> theta42 &middot;
-				<a href="https://github.com/theta42/sso-manager-node/blob/master/LICENSE" target="_blank" class="text-light">MIT License</a>
+				<a href="<%- ui.licenseUrl %>" target="_blank" class="text-light">MIT License</a>
 			</span>
 			<span class="d-flex align-items-center gap-3">
-				<a href="/docs" class="text-light text-decoration-none">
+				<a href="<%- ui.docsUrl %>"<%- ui.docsExternal ? ' target="_blank"' : '' %> class="text-light text-decoration-none">
 					<i class="fa-solid fa-book"></i> Docs
 				</a>
-				<a href="https://github.com/theta42/sso-manager-node" target="_blank" class="text-light text-decoration-none">
+				<a href="<%- ui.repoUrl %>" target="_blank" class="text-light text-decoration-none">
 					<i class="fa-brands fa-github"></i> GitHub
 				</a>
-				<a href="/tos" class="text-light text-decoration-none">Terms of Service</a>
+				<% if(ui.tosUrl){ %>
+				<a href="<%- ui.tosUrl %>" class="text-light text-decoration-none">Terms of Service</a>
+				<% } %>
 			</span>
 			<span>v<%- buildVersion %> (<%- buildHash %>)</span>
 		</div>
 	</footer>
-    </body>
+	</body>
 </html>
diff --git a/nodejs/views/top.ejs b/nodejs/views/top.ejs
index b9f94c4..cc3c1cf 100755
--- a/nodejs/views/top.ejs
+++ b/nodejs/views/top.ejs
@@ -1,138 +1,149 @@
 <!doctype html>
 <html lang="en">
-  <head>
-    <meta charset="utf-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
-    <title><%- name %> <%- title %></title>
-    <!-- Favicon -->
-    <link rel="icon" type="image/svg+xml" href="<%- logo %>">
-    <!-- CSS are placed here -->
-    <link rel="stylesheet" href="/static-modules/bootstrap/dist/css/bootstrap.min.css">
-    <link rel="stylesheet" href="/static-modules/@fortawesome/fontawesome-free/css/all.min.css">
+	<head>
+		<meta charset="utf-8">
+		<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+		<title><%- name %> <%- title %></title>
+		<!-- Shared UI shell — byte-identical across sso-manager-node, proxy and
+		     jump-host. Everything per-app comes from `ui` (utils/ui.js, exposed
+		     via app.locals in app.js). Edit all three copies together. -->
+		<!-- Favicon -->
+		<link rel="icon" type="image/svg+xml" href="<%- ui.faviconUrl %>">
+		<!-- CSS are placed here -->
+		<link rel="stylesheet" href="/static-modules/bootstrap/dist/css/bootstrap.min.css">
+		<link rel="stylesheet" href="/static-modules/@fortawesome/fontawesome-free/css/all.min.css">
 
-    <link rel='stylesheet' href='/static/css/styles.css' />
-    <!-- Scripts are placed here -->
-    <script type="text/javascript" src="/socket.io/socket.io.js"></script>
-    <script type="text/javascript" src='/static-modules/jquery/dist/jquery.js'></script>
-    <!-- <script type="text/javascript" src="/static/lib/js/popper-1.16.0.min.js"></script> -->
-    <!-- <script type="text/javascript" src="/static-modules/bootstrap/dist/js/bootstrap.min.js"></script> -->
-    <script type="text/javascript" src="/static-modules/bootstrap/dist/js/bootstrap.bundle.min.js"></script>
-    <script type="text/javascript" src="/static-modules/@fortawesome/fontawesome-free/js/all.min.js"></script>
-    <script type="text/javascript" src='/static-modules/mustache/mustache.min.js'></script>
-    <script type="text/javascript" src='/static-modules/jq-repeat/dist/js/jq-repeat.js'></script>
-    <script type="text/javascript" src='/static/lib/js/val.js'></script>
-    <script type="text/javascript" src="/static-modules/moment/moment.js"></script>
-    <script type="text/javascript" src="/static/lib/js/app-base.js"></script>
-    <script type="text/javascript" src="/static/js/app.js"></script>
-  </head>
-  <body>
+		<link rel='stylesheet' href='/static/css/styles.css' />
+		<!-- Scripts are placed here -->
+		<script type="text/javascript" src="/socket.io/socket.io.js"></script>
+		<script type="text/javascript" src='/static-modules/jquery/dist/jquery.js'></script>
+		<script type="text/javascript" src="/static-modules/bootstrap/dist/js/bootstrap.bundle.min.js"></script>
+		<script type="text/javascript" src="/static-modules/@fortawesome/fontawesome-free/js/all.min.js"></script>
+		<script type="text/javascript" src='/static-modules/mustache/mustache.min.js'></script>
+		<script type="text/javascript" src='/static-modules/jq-repeat/dist/js/jq-repeat.js'></script>
+		<script type="text/javascript" src='/static/lib/js/val.js'></script>
+		<script type="text/javascript" src="/static-modules/moment/moment.js"></script>
+		<script type="text/javascript" src="/static/lib/js/app-base.js"></script>
+		<script type="text/javascript" src="/static/js/app.js"></script>
+	</head>
+	<body>
 
-  	<nav class="navbar navbar-expand-md navbar-dark fixed-top bg-dark">
-  	  <a class="navbar-brand" href="/"><img src="<%- logo %>" height="28" class="me-2" alt=""><%- name %> <%- titleIcon %></a>
-  	  <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
-  	    <span class="navbar-toggler-icon"></span>
-  	  </button>
-  	  <div class="collapse navbar-collapse justify-content-end" id="navbarSupportedContent">
-  	    <ul class="navbar-nav top-nav">
-  	      <li class="nav-item group-required group-required-app_sso_admin">
-  	        <a class="nav-link" href="/users"><i class="fa-solid fa-users"></i>
-  	          Users
-  	        </a>
-  	      </li>
-  	      <li class="nav-item group-required group-required-app_sso_admin">
-  	        <a class="nav-link" href="/groups"><i class="fa-solid fa-users-viewfinder"></i>
-  	          Groups
-  	        </a>
-  	      </li>
-  	      <li class="nav-item group-required group-required-app_sso_admin group-required-app_sso_directory_admin">
-  	        <a class="nav-link" href="/directory"><i class="fa-solid fa-server"></i>
-  	          Directory
-  	        </a>
-  	      </li>
+		<nav class="navbar navbar-expand-md navbar-dark fixed-top bg-dark">
+			<a class="navbar-brand" href="/"><img src="<%- logo %>" height="28" class="me-2" alt=""><%- name %> <%- titleIcon %></a>
+			<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
+				<span class="navbar-toggler-icon"></span>
+			</button>
+			<div class="collapse navbar-collapse justify-content-end" id="navbarSupportedContent">
+				<ul class="navbar-nav top-nav">
+					<%# Items gated on a group start hidden (.group-required) and are
+					    revealed by app-base.js for the groups the user is in. %>
+					<% for(const item of ui.nav){ %>
+					<li class="nav-item<%- item.groups.length ? ' group-required' : '' %><%- item.groups.map(group => ' group-required-' + group).join('') %>">
+						<a class="nav-link" href="<%- item.href %>"><i class="<%- item.icon %>"></i>
+							<%- item.label %>
+						</a>
+					</li>
+					<% } %>
+				</ul>
+				<div class="form-inline mt-2 mt-md-0">
+					<% if(ui.profileUrl){ %>
+					<a id="cl-username" class="navbar-text text-light me-3" href="<%- ui.profileUrl %>" style="display: none;">
+						<i class="fa-solid fa-user me-1"></i><span id="cl-username-text"></span>
+					</a>
+					<% } else { %>
+					<span id="cl-username" class="navbar-text text-light me-3" style="display: none;">
+						<i class="fa-solid fa-user me-1"></i><span id="cl-username-text"></span>
+					</span>
+					<% } %>
+					<a id="cl-login-button" class="btn btn-outline-danger my-2 my-sm-0" onclick="app.auth.forceLogin()" style="display: none;">
+						<i class="fas fa-sign-in"></i>
+						Login
+					</a>
+
+					<button id="cl-logout-button" class="btn btn-outline-danger my-2 my-sm-0" onclick="app.auth.logOut(function(){ window.location.href = '<%- ui.logoutRedirect %>'; })" style="display: none;">
+						<i class="fas fa-sign-out"></i>
+						Log Out
+					</button>
+				</div>
+			</div>
+		</nav>
+
+		<% if(ui.updateCheck){ %>
+		<!-- Admin-only "a newer release is available" notice (services/update_check.js).
+		     Dismissal is per-browser-session only (sessionStorage), not persisted server-side.
+		     Fixed-positioned below the fixed navbar (a plain in-flow div here would render
+		     UNDER the nav, since fixed elements are taken out of document flow) -- shown/hidden
+		     dynamically, so #spa-shell's margin-top is adjusted in JS to make room for it. -->
+		<div id="update-banner" class="alert alert-info alert-dismissible mb-0 rounded-0 text-center" style="display:none; position:fixed; left:0; right:0; z-index:1029;">
+			<span id="update-banner-text"></span>
+			<button type="button" class="btn-close" onclick="dismissUpdateBanner()"></button>
+		</div>
+
+		<script type="text/javascript">
+			function showUpdateBanner(){
+				let $nav = $('nav.fixed-top');
+				let $banner = $('#update-banner');
+				$banner.css('top', $nav.outerHeight() + 'px').show();
+				$('#spa-shell').css('margin-top', ($nav.outerHeight() + $banner.outerHeight()) + 'px');
+			}
+
+			function dismissUpdateBanner(){
+				$('#update-banner').hide();
+				$('#spa-shell').css('margin-top', '');
+				sessionStorage.setItem('update-banner-dismissed', '1');
+			}
+
+			function checkForUpdate(){
+				if(sessionStorage.getItem('update-banner-dismissed')) return;
+				app.api.get('update-check', function(error, info){
+					if(error || !info || !info.updateAvailable) return;
+					$('#update-banner-text').html(
+						'A newer version of <%- ui.updateLabel %> is available: <b>v' + info.latestVersion + '</b> ' +
+						'(running v' + info.currentVersion + ') — ' +
+						'<a href="' + info.releaseUrl + '" target="_blank" class="alert-link">see what changed</a>.'
+					);
+					showUpdateBanner();
+				});
+			}
+		</script>
+		<% } %>
+
+		<script type="text/javascript">
+			$(document).ready(function(){
+
+				// Set the correct link to active in the top nav bar
+				$('.top-nav a').each(function(index){
+					let $this = $(this);
+					$this.removeClass('active');
+					if($this.attr('href').toLocaleLowerCase() === window.location.pathname.toLocaleLowerCase()){
+						$this.addClass('active')
+					}
+				})
+
+				// Set the correct login/logout button, and reveal the current user's
+				// name once we know who they are. Group-gated nav items are revealed
+				// by app-base.js off the same cached user/me.
+				app.auth.isLoggedIn(function(error, me){
+					if(me){
+						$('#cl-logout-button').show();
+						let username = me.uid || me.username;
+						if(username){
+							$('#cl-username-text').text(username);
+							$('#cl-username').css('display', '');
+						}
+
+						<% if(ui.updateCheck){ %>
+						if(me.isAdmin) checkForUpdate();
+						<% } %>
+					}else{
+						$('#cl-login-button').show();
+					}
+				});
+
+			});
+		</script>
 
 
-  	      <li class="nav-item group-required group-required-app_sso_admin">
-  	        <a class="nav-link" href="/executive">
-  	          <i class="fa-solid fa-gauge-high"></i>
-  	          Executive
-  	        </a>
-  	      </li>
-  	    </ul>
-  	    <div class="form-inline mt-2 mt-md-0">
-  	      <a id="cl-username" class="navbar-text text-light me-3" href="/profile" style="display: none;">
-  	        <i class="fa-solid fa-user me-1"></i><span id="cl-username-text"></span>
-  	      </a>
-  	      <a id="cl-login-button" class="btn btn-outline-danger my-2 my-sm-0" onclick="app.auth.forceLogin()" style="display: none;">
-  	        <i class="fas fa-sign-out"></i>
-  	        Login
-  	      </a>
-
-  	      <button id="cl-logout-button" class="btn btn-outline-danger my-2 my-sm-0" onclick="app.auth.logOut(e => window.location.href='/')" style="display: none;">
-  	        <i class="fas fa-sign-out"></i>
-  	        Log Out
-  	      </button>
-  	    </div>
-  	  </div>
-  	</nav>
-
-  	<div id="update-banner" class="alert alert-info alert-dismissible mb-0 rounded-0 text-center" style="display:none; position:fixed; left:0; right:0; z-index:1029;">
-  	  <span id="update-banner-text"></span>
-  	  <button type="button" class="btn-close" onclick="dismissUpdateBanner()"></button>
-  	</div>
-
-  	<script type="text/javascript">
-  	  function showUpdateBanner(){
-  	    let $nav = $('nav.fixed-top');
-  	    let $banner = $('#update-banner');
-  	    $banner.css('top', $nav.outerHeight() + 'px').show();
-  	    $('#spa-shell').css('margin-top', ($nav.outerHeight() + $banner.outerHeight()) + 'px');
-  	  }
-  	  function dismissUpdateBanner(){
-  	    $('#update-banner').hide();
-  	    $('#spa-shell').css('margin-top', '');
-  	    sessionStorage.setItem('update-banner-dismissed', '1');
-  	  }
-
-  	  $(document).ready(async function(){
-
-  	    // Set the correct link to active in the top nav bar
-  	    $('.top-nav a').each(function(index){
-  	      let $this = $(this);
-  	      $this.removeClass('active');
-  	      if($this.attr('href').toLocaleLowerCase() === window.location.pathname.toLocaleLowerCase()){
-  	        $this.addClass('active')
-  	      }
-  	    })
-
-  	    // Set the correct login/logout button, and reveal the current user's
-  	    // name (linking to their profile) once we know who they are.
-  	    var me = await app.auth.isLoggedIn();
-  	    if(me){
-  	      $('#cl-logout-button').show();
-  	      if(me.uid){
-  	        $('#cl-username-text').text(me.uid);
-  	        $('#cl-username').css('display', '');
-  	      }
-
-  	      if(await app.auth.memberOf('app_sso_admin', me) && !sessionStorage.getItem('update-banner-dismissed')){
-  	        app.api.get('update-check', function(error, info){
-  	          if(error || !info || !info.updateAvailable) return;
-  	          $('#update-banner-text').html(
-  	            'A newer version of SSO Manager is available: <b>v' + info.latestVersion + '</b> ' +
-  	            '(running v' + info.currentVersion + ') — ' +
-  	            '<a href="' + info.releaseUrl + '" target="_blank" class="alert-link">see what changed</a>.'
-  	          );
-  	          showUpdateBanner();
-  	        });
-  	      }
-  	    }else{
-  	      $('#cl-login-button').show();
-  	    }
-
-  	  });
-  	</script>
-
-
-  	<!-- Container -->
-  	<div id="spa-shell" class="container-fluid">
-      <div class="actionMessage" style="display:none;"></div>
+		<!-- Container -->
+		<div id="spa-shell" class="container-fluid">
+			<div class="actionMessage" style="display:none;"></div>