Fix Lead List filtering and resolve Svelte 5 subscription crash

- Refactored Lead List to use direct observable subscription for better reactivity.
- Implemented in-memory 'Hard Guard' filter to ensure licensee selection is strictly enforced.
- Fixed 'TypeError: s.subscribe is not a function' by removing legacy $ prefix from resolved props.
- Resolved TypeScript typing errors in Lead Detail and Search components.
- Migrated Badge Search icons to Lucide.

src/routes/events/[event_id]/(badges)/badges/ae_comp__badge_search.svelte

@@ -171,9 +171,9 @@
                     class="btn btn-lg preset-tonal-success border border-success-500 hover:preset-tonal-success text-2xl font-bold w-48 transition-all"
                 >
                     {#if $events_sess.badges.search_status === 'loading'}
-                        <span class="fas fa-spinner fa-spin mx-1"></span>
+                        <LoaderCircle class="animate-spin mx-1" />
                     {:else}
-                        <span class="fas fa-search mx-1"></span>
+                        <Search class="mx-1" />
                     {/if}
                     Search
                 </button>
@@ -222,7 +222,7 @@
                 }}
                 class="btn btn-sm preset-tonal-primary border border-primary-500"
             >
-                <span class="fas fa-qrcode mr-1"></span>
+                <QrCode size="1em" class="mr-1" />
                 QR Scan
             </button>
         {:else}
@@ -235,7 +235,7 @@
                 }}
                 class="btn btn-sm preset-tonal-primary border border-primary-500"
             >
-                <span class="fas fa-search mr-1"></span>
+                <Search size="1em" class="mr-1" />
                 Search
             </button>
         {/if}
@@ -250,9 +250,9 @@
             title="Toggle using the ID list or not."
         >
             {#if $events_loc.badges.use_id_li}
-                <span class="fas fa-toggle-on text-green-600 mr-1"></span>
+                <Check size="1.2em" class="text-green-600 mr-1" />
             {:else}
-                <span class="fas fa-toggle-off text-red-600 mr-1"></span>
+                <X size="1.2em" class="text-red-600 mr-1" />
             {/if}
             Use ID List
         </button>