style: Apply Prettier formatting with 4-space indentation

Applied consistent code formatting across the project using Prettier, now configured to use 4-space indentation instead of tabs.

src/routes/events/[event_id]/(leads)/leads/+layout.svelte

@@ -1,7 +1,7 @@
 <script lang="ts">
-	// Basic layout for the leads module
+    // Basic layout for the leads module
 </script>
 
 <div class="leads-module">
-	<slot />
+    <slot />
 </div>

src/routes/events/[event_id]/(leads)/leads/+page.svelte

@@ -1,32 +1,32 @@
 <script lang="ts">
-	import { onMount } from 'svelte';
-	import { liveQuery } from 'dexie';
-	import { db_events } from '$lib/ae_events/db_events';
-	import { events_slct } from '$lib/stores/ae_events_stores';
-	import { page } from '$app/stores';
+    import { onMount } from 'svelte';
+    import { liveQuery } from 'dexie';
+    import { db_events } from '$lib/ae_events/db_events';
+    import { events_slct } from '$lib/stores/ae_events_stores';
+    import { page } from '$app/stores';
 
-	let event_exhibit_obj_li = liveQuery(() => {
-		const event_id = $page.params.event_id;
-		if (!event_id) return [];
-		return db_events.exhibit.where({ event_id_random: event_id }).sortBy('name');
-	});
+    let event_exhibit_obj_li = liveQuery(() => {
+        const event_id = $page.params.event_id;
+        if (!event_id) return [];
+        return db_events.exhibit.where({ event_id_random: event_id }).sortBy('name');
+    });
 </script>
 
 <section class="ae_events_leads_new h-full w-full flex flex-col items-center space-y-4">
-	<h1 class="h2">Exhibitor Leads</h1>
+    <h1 class="h2">Exhibitor Leads</h1>
 
-	{#if $event_exhibit_obj_li && $event_exhibit_obj_li.length > 0}
-		<h2 class="h3">Select your exhibit from the list</h2>
-		<ul class="list">
-			{#each $event_exhibit_obj_li as exhibit_obj}
-				<li>
-					<a href="/events/{$page.params.event_id}/leads/exhibit/{exhibit_obj.id_random}">
-						{exhibit_obj.name} (Booth #{exhibit_obj.code})
-					</a>
-				</li>
-			{/each}
-		</ul>
-	{:else}
-		<p>No exhibits found for this event.</p>
-	{/if}
-</section>
+    {#if $event_exhibit_obj_li && $event_exhibit_obj_li.length > 0}
+        <h2 class="h3">Select your exhibit from the list</h2>
+        <ul class="list">
+            {#each $event_exhibit_obj_li as exhibit_obj}
+                <li>
+                    <a href="/events/{$page.params.event_id}/leads/exhibit/{exhibit_obj.id_random}">
+                        {exhibit_obj.name} (Booth #{exhibit_obj.code})
+                    </a>
+                </li>
+            {/each}
+        </ul>
+    {:else}
+        <p>No exhibits found for this event.</p>
+    {/if}
+</section>

src/routes/events/[event_id]/(leads)/leads/[lead_id]/+page.svelte

@@ -1,5 +1,5 @@
 <script lang="ts">
-	// Page for viewing/editing a single lead
+    // Page for viewing/editing a single lead
 </script>
 
 <h1 class="h1">Lead Details</h1>

src/routes/events/[event_id]/(leads)/leads/exhibit/[exhibit_id]/+page.svelte

@@ -1,5 +1,5 @@
 <script lang="ts">
-	// Page for an exhibitor's leads
+    // Page for an exhibitor's leads
 </script>
 
 <h1 class="h1">Exhibitor Leads</h1>