auth: JWT valid until logout (drop 8h expiry)

Booth reality breaks a fixed clock (relief late/absent, forced double shifts),
and a shift is a separate explicit boundary. Drop expiresIn from the global jwt
config and from login; the token carries no exp. Cookie maxAge = 30 days so a
browser restart doesn't log out an active operator; logout still clears it.

apps/server/src/routes/auth.ts

@@ -2,7 +2,6 @@ import bcrypt from "bcrypt";
 import type { FastifyInstance } from "fastify";
 import { eq, users, type Db } from "@parking/db";
 import {
-  TOKEN_TTL,
   clearAuthCookies,
   newCsrfToken,
   requireRole,
@@ -34,10 +33,13 @@ export async function authRoutes(app: FastifyInstance, db: Db): Promise<void> {
     }
 
     const csrf = newCsrfToken();
-    const token = await reply.jwtSign(
-      { sub: user.id, username: user.username, role: user.role, csrf },
-      { expiresIn: TOKEN_TTL },
-    );
+    // No expiresIn: the token is valid until explicit logout (see auth.ts).
+    const token = await reply.jwtSign({
+      sub: user.id,
+      username: user.username,
+      role: user.role,
+      csrf,
+    });
     setAuthCookies(reply, token, csrf);
     return { id: user.id, username: user.username, role: user.role };
   });