Added Sign In with Apple

src/lib/components/AuthModal.svelte

@@ -73,7 +73,7 @@
 	}
 </script>
 
-<svelte:window on:keydown={handleKeydown} />
+<svelte:window onkeydown={handleKeydown} />
 
 {#if isOpen}
 	<div class="fixed inset-0 z-50 flex items-center justify-center p-4 bg-black/70 backdrop-blur-sm">
@@ -91,6 +91,25 @@
 				</h2>
 			</div>
 
+			<form method="POST" action="/auth/apple">
+				<input type="hidden" name="anonymousId" value={anonymousId} />
+				<button
+					type="submit"
+					class="w-full flex items-center justify-center gap-2 px-4 py-2.5 bg-white text-black rounded-md hover:bg-gray-100 transition-colors font-medium"
+				>
+					<svg class="w-5 h-5" viewBox="0 0 24 24" fill="currentColor">
+						<path d="M17.05 20.28c-.98.95-2.05.88-3.08.4-1.09-.5-2.08-.48-3.24 0-1.44.62-2.2.44-3.06-.4C2.79 15.25 3.51 7.59 9.05 7.31c1.35.07 2.29.74 3.08.8 1.18-.24 2.31-.93 3.57-.84 1.51.12 2.65.72 3.4 1.8-3.12 1.87-2.38 5.98.48 7.13-.57 1.5-1.31 2.99-2.54 4.09zM12.03 7.25c-.15-2.23 1.66-4.07 3.74-4.25.29 2.58-2.34 4.5-3.74 4.25z"/>
+					</svg>
+					Sign in with Apple
+				</button>
+			</form>
+
+			<div class="flex items-center my-4">
+				<div class="flex-1 border-t border-white/20"></div>
+				<span class="px-3 text-sm text-white/60">or</span>
+				<div class="flex-1 border-t border-white/20"></div>
+			</div>
+
 			<form
 				method="POST"
 				action={mode === 'signin' ? '/auth/signin' : '/auth/signup'}