chore: migrate all FA icons to Lucide (@lucide/svelte)

- Replaced all active FontAwesome <span class="fas fa-*"> icons with
  Lucide components across 145 files (excluding /idaa/ which is intentional)
- Fixed merge script bug: consolidated lucide-svelte imports into @lucide/svelte
- Replaced dynamic toggle patterns (fa-toggle-on/off) with ToggleRight/ToggleLeft
- Replaced fa-eye/fa-eye-slash with Eye/EyeOff
- Replaced fa-bug/fa-bug-slash with Bug/BugOff
- Replaced fa-sync fa-spin with RefreshCw + animate-spin
- Replaced fa-microchip with Cpu
- Fixed {@const} placement in element_manage_event_file_li.svelte
- Removed obsolete CSS hover rules for .unlock_icon/.lock_icon
- svelte-check: 0 errors, 0 warnings

src/routes/journals/+page.svelte

@@ -8,15 +8,7 @@
     import { goto } from '$app/navigation';
 
     // *** Icons
-    import {
-        BookPlus,
-        SquareLibrary,
-        Wrench,
-        FileUp,
-        LoaderCircle,
-        Sparkles
-    } from 'lucide-svelte';
-
+    import { BookPlus, FileUp, LoaderCircle, Sparkles, SquareLibrary, Wrench } from '@lucide/svelte';
     // *** Libraries & Stores
     import { liveQuery } from 'dexie';
     import { Modal } from 'flowbite-svelte';