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)/templates/+page.svelte

@@ -1,12 +1,11 @@
 <script lang="ts">
     import { liveQuery } from 'dexie';
-    import { Pencil, Trash2 } from '@lucide/svelte';
+    import { Pencil, Plus, Trash2 } from '@lucide/svelte';
     import { events_func } from '$lib/ae_events_functions';
     import { ae_api } from '$lib/stores/ae_stores';
     import { events_slct } from '$lib/stores/ae_events_stores';
     import { Modal } from 'flowbite-svelte';
     import Comp_badge_template_form from './ae_comp__badge_template_form.svelte';
-    import { Plus } from 'lucide-svelte';
 
     interface Props {
         data: any; // PageData from SvelteKit