feat(apps): 重构 UI 架构为 presentation 层并新增 l10n 国际化支持

apps/lib/features/auth/presentation/screens/auth_boot_screen.dart

@@ -0,0 +1,20 @@
+import 'package:flutter/material.dart';
+
+class AuthBootScreen extends StatelessWidget {
+  const AuthBootScreen({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      backgroundColor: const Color(0xFFEFF8FF),
+      body: SafeArea(
+        child: Center(
+          child: Image.asset(
+            'assets/branding/assistant_octopus_foreground.png',
+            width: 260,
+          ),
+        ),
+      ),
+    );
+  }
+}