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/lib/elements/element_input_files_tbl.svelte

@@ -8,7 +8,7 @@
     // import { api } from '$lib/api';
     import { check_hosted_file_obj_w_hash } from '$lib/ae_core/core__check_hosted_file_obj_w_hash';
     import { ae_loc, ae_sess, ae_api, ae_trig, slct, slct_trigger } from '$lib/stores/ae_stores';
-
+    import { LoaderCircle, Minus } from '@lucide/svelte';
     interface Props {
         // export let element_id = 'svelte_input_file_element';
         container_class_li?: string[];
@@ -335,7 +335,7 @@
         <div
             class="file_list_status ae_warning preset-tonal-warning border border-warning-500 p-1 m-1"
         >
-            <span class="fas fa-spinner fa-spin m-1"></span> Processing selected file list...
+            <LoaderCircle size="1em" class="m-1 animate-spin" /> Processing selected file list...
         </div>
     {/if}
 
@@ -366,7 +366,7 @@
                                 class="btn btn-md preset-tonal-warning hover:preset-filled-secondary-500 m-1"
                                 title="Remove file from upload list"
                             >
-                                <span class="fas fa-minus"></span>
+                                <Minus size="1em" />
                                 <span class="hidden">Remove</span>
                             </button>
                         </td>