Add background embeding to module

src/lib/ChatScreens/BackgroundDom.svelte

@@ -1,7 +1,7 @@
 <script lang="ts">
     import { ParseMarkdown, risuChatParser } from "src/ts/parser";
     import { DataBase, type Database, type character, type groupChat } from "src/ts/storage/database";
-    import { CurrentVariablePointer, selectedCharID } from "src/ts/stores";
+    import { CurrentVariablePointer, moduleBackgroundEmbedding, selectedCharID } from "src/ts/stores";
     import { onDestroy } from "svelte";
 
     let backgroundHTML = ''
@@ -41,10 +41,10 @@
 </script>
 
 
-{#if backgroundHTML}
+{#if backgroundHTML || $moduleBackgroundEmbedding}
     {#key $CurrentVariablePointer}
         <div class="absolute top-0 left-0 w-full h-full">
-            {#await ParseMarkdown(risuChatParser(backgroundHTML, {chara:currentChar}), currentChar, 'back') then md} 
+            {#await ParseMarkdown(risuChatParser((backgroundHTML || '') + ($moduleBackgroundEmbedding || ''), {chara:currentChar}), currentChar, 'back') then md} 
                 {@html md}
             {/await}
         </div>