Refactor Journals UI and enhance CodeMirror editor

- Added formatting toolbar to journal entry editor with support for bold, italic, headers, and lists.
- Standardized iconography to Lucide across Journals module, removing legacy FontAwesome.
- Improved responsiveness and dark mode compatibility in layout and list views.
- Refactored CodeMirror component to support external control via editorView binding.
- Hardened security by removing unnecessary @html tags in journal names.

src/routes/journals/+page.svelte

@@ -8,7 +8,7 @@
     import { goto } from '$app/navigation';
 
     // *** Import other supporting libraries
-    import { BookPlus, FolderPlus, Library, SquareLibrary, Wrench } from '@lucide/svelte';
+    import { BookPlus, FolderPlus, Library, Loader, SquareLibrary, Wrench } from '@lucide/svelte';
     import { liveQuery } from 'dexie';
     import { Modal } from 'flowbite-svelte';
 
@@ -243,7 +243,7 @@
 
     {#await ae_acct.slct.journal_obj_li}
         <div class="flex flex-col items-center justify-center p-8">
-            <span class="fas fa-spinner fa-spin text-4xl text-primary-500 mb-4"></span>
+            <Loader size="2em" class="animate-spin text-primary-500 mb-4" />
             <span class="text-lg text-gray-600 dark:text-gray-400">Loading journals...</span>
         </div>
     {:then}