style(ui): 폰트 크기 및 레이아웃 조정

- 전역 테마 폰트 크기 증가 (가독성 개선)
- 위젯 레이아웃 미세 조정

lib/src/app.dart

@@ -229,7 +229,7 @@ class _AskiiNeverDieAppState extends State<AskiiNeverDieApp> {
       ),
       titleSmall: TextStyle(
         fontFamily: 'PressStart2P',
-        fontSize: 8,
+        fontSize: 10,
         color: Color(0xFF1F1F28),
       ),
       bodyLarge: TextStyle(fontSize: 14, color: Color(0xFF1F1F28)),
@@ -237,17 +237,17 @@ class _AskiiNeverDieAppState extends State<AskiiNeverDieApp> {
       bodySmall: TextStyle(fontSize: 10, color: Color(0xFF1F1F28)),
       labelLarge: TextStyle(
         fontFamily: 'PressStart2P',
-        fontSize: 10,
+        fontSize: 11,
         color: Color(0xFF1F1F28),
       ),
       labelMedium: TextStyle(
         fontFamily: 'PressStart2P',
-        fontSize: 8,
+        fontSize: 10,
         color: Color(0xFF1F1F28),
       ),
       labelSmall: TextStyle(
         fontFamily: 'PressStart2P',
-        fontSize: 6,
+        fontSize: 8,
         color: Color(0xFF1F1F28),
       ),
     ),
@@ -256,7 +256,7 @@ class _AskiiNeverDieAppState extends State<AskiiNeverDieApp> {
       backgroundColor: Color(0xFFE8DDD0),
       labelStyle: TextStyle(
         fontFamily: 'PressStart2P',
-        fontSize: 8,
+        fontSize: 10,
         color: Color(0xFF1F1F28),
       ),
       side: BorderSide(color: Color(0xFF8B7355)),
@@ -363,7 +363,7 @@ class _AskiiNeverDieAppState extends State<AskiiNeverDieApp> {
       ),
       titleSmall: TextStyle(
         fontFamily: 'PressStart2P',
-        fontSize: 8,
+        fontSize: 10,
         color: Color(0xFFC0CAF5),
       ),
       bodyLarge: TextStyle(fontSize: 14, color: Color(0xFFC0CAF5)),
@@ -371,17 +371,17 @@ class _AskiiNeverDieAppState extends State<AskiiNeverDieApp> {
       bodySmall: TextStyle(fontSize: 10, color: Color(0xFFC0CAF5)),
       labelLarge: TextStyle(
         fontFamily: 'PressStart2P',
-        fontSize: 10,
+        fontSize: 11,
         color: Color(0xFFC0CAF5),
       ),
       labelMedium: TextStyle(
         fontFamily: 'PressStart2P',
-        fontSize: 8,
+        fontSize: 10,
         color: Color(0xFFC0CAF5),
       ),
       labelSmall: TextStyle(
         fontFamily: 'PressStart2P',
-        fontSize: 6,
+        fontSize: 8,
         color: Color(0xFFC0CAF5),
       ),
     ),
@@ -390,7 +390,7 @@ class _AskiiNeverDieAppState extends State<AskiiNeverDieApp> {
       backgroundColor: Color(0xFF2A2E3F),
       labelStyle: TextStyle(
         fontFamily: 'PressStart2P',
-        fontSize: 8,
+        fontSize: 10,
         color: Color(0xFFC0CAF5),
       ),
       side: BorderSide(color: Color(0xFF545C7E)),