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/lib/app_components/e_app_codemirror_v5.svelte

@@ -29,6 +29,7 @@
     let {
         content = 'test test test test',
         new_content = $bindable(''),
+        editorView = $bindable(), // Exposed for external control
         theme_mode = 'light',
         extensions = [],
         editable = true,