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/app_components/e_app_theme.svelte

@@ -1,6 +1,5 @@
 <script lang="ts">
-    import { Moon, Sun } from '@lucide/svelte';
-
+    import { Minimize2, Moon, Sun } from '@lucide/svelte';
     import { ae_loc, ae_sess, ae_api, slct, slct_trigger } from '$lib/stores/ae_stores';
 
     interface Props {
@@ -131,7 +130,7 @@ if ($ae_loc.app_cfg.theme_mode == 'light') {
                 title="Hide Theme Options"
             >
                 <!-- <span class="fas fa-compress-alt"></span> -->
-                <span class="fas fa-compress-arrows-alt m-1"></span>
+                <Minimize2 size="1em" class="m-1" />
                 <span
                     class="
                     hidden