feat(journals): implement Quick Add and unified Append/Prepend shared component

- Created AeCompJournalEntryQuickAdd for high-velocity note creation
- Extracted robust append/prepend logic from List View into AeCompModalJournalEntryAppend
- Unified List and Detail views to use the shared modal for content manipulation
- Added explicit Append/Prepend actions to Journal Entry settings menu
- Updated TODO.md and Journals module documentation

src/routes/journals/+page.svelte

@@ -32,6 +32,7 @@
 
     import Modal_journals_cfg from './modal_journals_config.svelte';
     import Journal_obj_li from './ae_comp__journal_obj_li.svelte';
+    import AeCompJournalEntryQuickAdd from './ae_comp__journal_entry_quick_add.svelte';
 
     // import Element_data_store from '$lib/element_data_store_v2.svelte';
 
@@ -175,6 +176,11 @@
         {$ae_loc.person.given_name ? `- ${$ae_loc.person.given_name}` : ''}
     </h1>
 
+    <!-- Quick Add Section -->
+    <div class="w-full max-w-2xl mx-auto px-4 pb-4">
+        <AeCompJournalEntryQuickAdd class="shadow-lg" />
+    </div>
+
     <div
         class="flex flex-row flex-wrap gap-1 items-center justify-center w-full border-gray-200 border-y-2 py-2"
         class:hidden={!$ae_loc.edit_mode}