Listen for new threads, add reply/quote button to channels and chats, better quote handling

src/app/components/ChannelCompose.svelte

@@ -1,19 +1,24 @@
 <script lang="ts">
   import {onMount} from "svelte"
-  import type {Readable} from "svelte/store"
-  import {createEditor, type Editor, EditorContent} from "svelte-tiptap"
+  import {createEditor, EditorContent} from "svelte-tiptap"
   import {isMobile} from "@lib/html"
   import Icon from "@lib/components/Icon.svelte"
   import Button from "@lib/components/Button.svelte"
   import {getEditorOptions, getEditorTags} from "@lib/editor"
   import {getPubkeyHints} from "@app/commands"
 
-  export let onSubmit
+  export let onSubmit: any
   export let content = ""
+  export let editor = createEditor(
+    getEditorOptions({
+      submit,
+      getPubkeyHints,
+      submitOnEnter: true,
+      autofocus: !isMobile,
+    }),
+  )
 
-  let editor: Readable<Editor>
-
-  const submit = () => {
+  function submit() {
     if ($loading) return
 
     onSubmit({
@@ -27,15 +32,6 @@
   $: loading = $editor?.storage.fileUpload.loading
 
   onMount(() => {
-    editor = createEditor(
-      getEditorOptions({
-        submit,
-        getPubkeyHints,
-        submitOnEnter: true,
-        autofocus: !isMobile,
-      }),
-    )
-
     $editor.commands.setContent(content)
   })
 </script>