Add app source and tests

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

lib/Peach/designs/StatCard.dart

@@ -0,0 +1,99 @@
+import 'package:flutter/material.dart';
+
+import '../about/internal/application/TextType.dart';
+import '../utils/Colors.dart';
+import 'text/Text.dart';
+
+/// A horizontal metric card: icon chip on the left, big value + label on the
+/// right, with an optional trailing accent (e.g. a mini ring or delta).
+class StatCard extends StatelessWidget {
+  final IconData icon;
+  final String label;
+  final String value;
+  final Color color;
+  final String? sub;
+  final Widget? trailing;
+
+  const StatCard({
+    super.key,
+    required this.icon,
+    required this.label,
+    required this.value,
+    required this.color,
+    this.sub,
+    this.trailing,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    final jp = context.jp;
+    return Container(
+      padding: const EdgeInsets.all(16),
+      decoration: PeachTheme.panel(context, glowColor: color, radius: 18),
+      child: Row(
+        children: [
+          Container(
+            width: 46,
+            height: 46,
+            decoration: BoxDecoration(
+              gradient: LinearGradient(
+                begin: Alignment.topLeft,
+                end: Alignment.bottomRight,
+                colors: [
+                  color.withValues(alpha: 0.32),
+                  color.withValues(alpha: 0.14),
+                ],
+              ),
+              borderRadius: BorderRadius.circular(13),
+              border: Border.all(color: color.withValues(alpha: 0.40)),
+              boxShadow: PeachTheme.glow(color, opacity: 0.22, blur: 16),
+            ),
+            child: Icon(icon, color: color, size: 22),
+          ),
+          const SizedBox(width: 14),
+          Expanded(
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                text(
+                  value,
+                  25,
+                  TextType.Bold,
+                  color: jp.text,
+                  maxLines: 1,
+                  overflow: TextOverflow.ellipsis,
+                  letterSpacing: -0.6,
+                  height: 1.05,
+                  weight: FontWeight.w800,
+                ),
+                const SizedBox(height: 2),
+                text(
+                  label.toUpperCase(),
+                  10.5,
+                  TextType.Regular,
+                  color: jp.textFaint,
+                  maxLines: 1,
+                  overflow: TextOverflow.ellipsis,
+                  letterSpacing: 0.8,
+                  weight: FontWeight.w700,
+                ),
+                if (sub != null)
+                  text(
+                    sub!,
+                    11,
+                    TextType.Regular,
+                    weight: FontWeight.w400,
+                    color: jp.textDim,
+                    maxLines: 1,
+                    overflow: TextOverflow.ellipsis,
+                  ),
+              ],
+            ),
+          ),
+          if (trailing != null) ...[const SizedBox(width: 8), trailing!],
+        ],
+      ),
+    );
+  }
+}