Bump version to 1.0.2+4, implement native state restoration, and clean up UI

lib/components/clock_display.dart

@@ -22,31 +22,6 @@ class ClockDisplay extends StatelessWidget {
           child: Stack(
             alignment: Alignment.center,
             children: [
-              // Background quota track ring
-              const CustomPaint(
-                size: Size(200, 200),
-                painter: _ArcPainter(
-                  progress: 1.0,
-                  color: Color.fromRGBO(74, 85, 104, 0.2),
-                  strokeWidth: 4,
-                ),
-              ),
-
-              // Live quota progress ring
-              TweenAnimationBuilder<double>(
-                tween: Tween(begin: 0, end: timer.progress),
-                duration: const Duration(milliseconds: 400),
-                builder: (context, value, _) => CustomPaint(
-                  size: const Size(200, 200),
-                  painter: _ArcPainter(
-                    progress: value,
-                    color: _cyanGlow,
-                    strokeWidth: 4,
-                    glow: true,
-                  ),
-                ),
-              ),
-
               // Center content: countdown + speed
               Column(
                 mainAxisSize: MainAxisSize.min,
@@ -94,45 +69,3 @@ class ClockDisplay extends StatelessWidget {
     );
   }
 }
-
-class _ArcPainter extends CustomPainter {
-  final double progress;
-  final Color color;
-  final double strokeWidth;
-  final bool glow;
-
-  const _ArcPainter({
-    required this.progress,
-    required this.color,
-    this.strokeWidth = 4,
-    this.glow = false,
-  });
-
-  @override
-  void paint(Canvas canvas, Size size) {
-    final rect = Rect.fromLTWH(0, 0, size.width, size.height)
-        .deflate(strokeWidth / 2);
-
-    if (glow) {
-      final glowPaint = Paint()
-        ..color = const Color.fromRGBO(0, 229, 255, 0.15)
-        ..style = PaintingStyle.stroke
-        ..strokeWidth = strokeWidth + 8
-        ..strokeCap = StrokeCap.round
-        ..maskFilter = const MaskFilter.blur(BlurStyle.normal, 8);
-      canvas.drawArc(rect, -pi / 2, 2 * pi * progress, false, glowPaint);
-    }
-
-    final paint = Paint()
-      ..color = color
-      ..style = PaintingStyle.stroke
-      ..strokeWidth = strokeWidth
-      ..strokeCap = StrokeCap.round;
-
-    canvas.drawArc(rect, -pi / 2, 2 * pi * progress, false, paint);
-  }
-
-  @override
-  bool shouldRepaint(covariant _ArcPainter old) =>
-      old.progress != progress || old.color != color;
-}