Add self-service API tokens (PATs) — the UI had no way to create one

jump-host had zero API-token support: no model, no route, no UI, and
Auth.checkApiToken was explicitly absent from the createOidcClient() call
(per the comment it left behind). proxy and sso-manager-node both have
this; jump-host didn't.

Ports proxy's models/api_token.js + routes/api_token.js pattern (jmp_
prefix instead of prx_), wires checkApiToken into createOidcClient(), adds
Bearer-token support to middleware/auth.js, and adds a token management
card to dashboard.ejs (create/list/rotate/revoke) using app.modal/
app.messages.

Scope note: a jump-host token carries no group claims (unlike proxy's,
which snapshots the creator's groups), so it authenticates as its creator
for non-admin routes (e.g. GET /api/user/hosts) but can never pass
requireAdmin — a deliberate, conservative default rather than recomputing
live admin status per-request.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

nodejs/middleware/auth.js

@@ -9,6 +9,24 @@ const { Auth } = require('../models');
 
 async function auth(req, res, next){
 	try{
+		// API-only token: `Authorization: Bearer jmp_<id>_<secret>`. Carries no
+		// group claims (see models/api_token.js), so it authenticates as its
+		// creator but never passes requireAdmin below.
+		const authz = req.header('authorization') || '';
+		if(authz.slice(0, 7).toLowerCase() === 'bearer '){
+			const t = await Auth.checkApiToken(authz.slice(7));
+			req.token = {
+				user: {username: t.created_by},
+				created_by: t.created_by,
+				groupsArray: () => [],
+				check: () => true,
+				is_valid: true,
+			};
+			req.user = req.token.user;
+			req.groups = [];
+			return next();
+		}
+
 		req.token = await Auth.checkToken(req.header('auth-token'));
 		req.user = req.token.user;
 		req.groups = typeof req.token.groupsArray === 'function' ? req.token.groupsArray() : [];