Use lists for room memberships

src/app/routes.ts

@@ -1,6 +1,6 @@
 import {nip19} from "nostr-tools"
 import type {Page} from "@sveltejs/kit"
-import {userMembership, makeChatId, decodeNRelay} from "@app/state"
+import {userMembership, makeChatId, decodeNRelay, getMembershipUrls} from "@app/state"
 
 export const makeSpacePath = (url: string, extra = "") => {
   let path = `/spaces/${nip19.nrelayEncode(url)}`
@@ -17,7 +17,7 @@ export const makeChatPath = (pubkeys: string[]) => `/home/${makeChatId(pubkeys)}
 export const getPrimaryNavItem = ($page: Page) => $page.route?.id?.split("/")[1]
 
 export const getPrimaryNavItemIndex = ($page: Page) => {
-  const urls = Array.from(userMembership.get()?.roomsByUrl.keys() || [])
+  const urls = getMembershipUrls(userMembership.get())
 
   switch (getPrimaryNavItem($page)) {
     case "discover":