Redesign the UI after the fitness reference and replace the logo

Light sage-to-cream ambient backdrop, frosted glass controls and painted
SceneArt landscapes in place of photography. Home becomes a dashboard with a
two-tone greeting, a frosted summary ring, category portraits, an up-next rail
of image-led cards and a floating glass tab bar. The routine library gets an
image header and painted cards; the player gets a scene stage, steps on an
arc, a dotted clock and a night pill with a lime spark. Goals become painted
cards in their own colour.

New logo: a lime sun resting on a ground line under two arcs. The splash
raises the sun and lights the arcs; launcher icons and native splash are
regenerated to match.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KhQh614DMeYoQEH9SoMRUw

frontend/lib/Grounded/designs/GlassSurface.dart

@@ -0,0 +1,104 @@
+import 'dart:ui';
+
+import 'package:flutter/material.dart';
+
+import '../utils/Colors.dart';
+
+/// Frosted glass: the background blurred through a translucent white panel
+/// with a bright hairline edge. Controls and floating chrome are built from it.
+class GlassSurface extends StatelessWidget {
+  final Widget child;
+
+  final BorderRadius radius;
+
+  final EdgeInsets padding;
+
+  final Color? tint;
+
+  /// Over a dark or coloured stage the panel goes smoky instead of milky.
+  final bool onDark;
+
+  final double blur;
+
+  const GlassSurface({
+    super.key,
+    required this.child,
+    this.radius = const BorderRadius.all(Radius.circular(20)),
+    this.padding = EdgeInsets.zero,
+    this.tint,
+    this.onDark = false,
+    this.blur = 18,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return ClipRRect(
+      borderRadius: radius,
+      child: BackdropFilter(
+        filter: ImageFilter.blur(sigmaX: blur, sigmaY: blur),
+        child: Container(
+          padding: padding,
+          decoration: BoxDecoration(
+            color: tint ??
+                (onDark ? colorWhite.withValues(alpha: 0.16) : colorGlass),
+            borderRadius: radius,
+            border: Border.all(
+              color: onDark
+                  ? colorWhite.withValues(alpha: 0.22)
+                  : colorGlassBorder,
+              width: 1,
+            ),
+          ),
+          child: child,
+        ),
+      ),
+    );
+  }
+}
+
+/// A round frosted control — back, close, bell, more.
+Widget glassCircle(
+  IconData icon,
+  VoidCallback onTap, {
+  double size = 42,
+  bool onDark = false,
+  bool dotted = false,
+  Color? dotColor,
+}) {
+  return GestureDetector(
+    onTap: onTap,
+    behavior: HitTestBehavior.opaque,
+    child: Stack(
+      clipBehavior: Clip.none,
+      children: [
+        GlassSurface(
+          onDark: onDark,
+          radius: BorderRadius.circular(size),
+          child: SizedBox(
+            width: size,
+            height: size,
+            child: Icon(
+              icon,
+              size: size * 0.42,
+              color: onDark ? colorWhite : colorInk,
+            ),
+          ),
+        ),
+        if (dotted)
+          Positioned(
+            top: 2,
+            right: 2,
+            child: Container(
+              width: 10,
+              height: 10,
+              decoration: BoxDecoration(
+                color: dotColor ?? colorAccent,
+                shape: BoxShape.circle,
+                border: Border.all(color: colorWhite, width: 1.5),
+              ),
+            ),
+          ),
+      ],
+    ),
+  );
+}