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/events/[event_id]/(badges)/badges/+page.svelte

@@ -31,8 +31,7 @@
     // import { Modal } from 'flowbite-svelte';
     // import Comp_badge_create_form from './ae_comp__badge_create_form.svelte';
     // import Comp_badge_upload_form from './ae_comp__badge_upload_form.svelte';
-    import { LoaderCircle } from 'lucide-svelte';
-
+    import { LoaderCircle } from '@lucide/svelte';
     // *** Initialization & Store Guard ***
     // Ensure all search fields are initialized to prevent circular undefined triggers
     if ($events_loc.badges) {