inbox warning (#489)

* add inbox warning to the bottom of the chat history

* use getListTags

src/app/views/ChannelsDetail.svelte

@@ -61,7 +61,7 @@
           href={"/channels" + (isAccepted ? "" : "/requests")} />
         <PersonCircles {pubkeys} />
       </div>
-      <div class="flex flex-col items-start overflow-hidden pt-2">
+      <div class:h-16={pubkeys.length == 1} class="flex flex-col items-start overflow-hidden pt-2">
         <div>
           {#each pubkeys as pubkey, i (pubkey)}
             {#if i > 0}&bullet;{/if}

src/partials/Channel.svelte

@@ -4,7 +4,7 @@
   import {pluralize} from "hurdak"
   import {derived} from "svelte/store"
   import {sleep} from "@welshman/lib"
-  import type {TrustedEvent} from "@welshman/util"
+  import {getListTags, type TrustedEvent} from "@welshman/util"
   import {Nip46Signer} from "@welshman/signer"
   import {
     session,
@@ -64,7 +64,7 @@
   let groupedMessages = []
 
   const pubkeysWithoutInbox = derived(inboxRelaySelectionsByPubkey, $inboxRelayPoliciesByPubkey =>
-    pubkeys.filter(pubkey => !$inboxRelayPoliciesByPubkey.has(pubkey)),
+    pubkeys.filter(pubkey => !getListTags($inboxRelayPoliciesByPubkey.get(pubkey)).length),
   )
 
   onMount(() => {
@@ -176,6 +176,16 @@
         </div>
       {/if}
     </div>
+    {#if !userHasInbox}
+      <div class="m-auto max-w-96 py-20 text-center">
+        <div class="mb-4 text-lg text-accent">
+          <i class="fa fa-exclamation-triangle"></i> Your inbox is not configured.
+        </div>
+        In order to deliver messages, Coracle needs to know where to send them. Please visit your
+        <a class="cursor-pointer underline" href="/settings/relays"> relay settings page</a> and set
+        up your inbox relays.
+      </div>
+    {/if}
     {#each groupedMessages as message (message.id)}
       <div in:fly={{y: 20}} class="grid gap-2 py-1">
         <div