feat(insights): first isights impemetation

lib/features/insights/presentation/widgets/series_chips.dart

@@ -0,0 +1,76 @@
+import 'package:eatvio_app/features/insights/presentation/widgets/insights_colors.dart';
+import 'package:flutter/material.dart';
+
+class SeriesChipData {
+  const SeriesChipData({
+    required this.label,
+    required this.color,
+    required this.isVisible,
+  });
+
+  final String label;
+  final Color color;
+  final bool isVisible;
+}
+
+/// Чипы-переключатели серий под графиком.
+class SeriesChips extends StatelessWidget {
+  const SeriesChips({super.key, required this.chips, required this.onToggle});
+
+  final List<SeriesChipData> chips;
+  final ValueChanged<int> onToggle;
+
+  @override
+  Widget build(BuildContext context) {
+    return Wrap(
+      spacing: 8,
+      runSpacing: 8,
+      children: [
+        for (var i = 0; i < chips.length; i++)
+          Opacity(
+            opacity: chips[i].isVisible ? 1 : 0.45,
+            child: InkWell(
+              key: Key('insights_series_$i'),
+              borderRadius: BorderRadius.circular(999),
+              onTap: () => onToggle(i),
+              child: Container(
+                padding: const EdgeInsets.symmetric(
+                  horizontal: 14,
+                  vertical: 7,
+                ),
+                decoration: BoxDecoration(
+                  borderRadius: BorderRadius.circular(999),
+                  border: Border.all(color: InsightsColors.border, width: 1.5),
+                ),
+                child: Row(
+                  mainAxisSize: MainAxisSize.min,
+                  children: [
+                    Container(
+                      width: 10,
+                      height: 10,
+                      decoration: BoxDecoration(
+                        color: chips[i].color,
+                        shape: BoxShape.circle,
+                      ),
+                    ),
+                    const SizedBox(width: 8),
+                    Text(
+                      chips[i].label,
+                      style: TextStyle(
+                        fontSize: 13,
+                        fontWeight: FontWeight.w700,
+                        color: InsightsColors.title,
+                        decoration: chips[i].isVisible
+                            ? TextDecoration.none
+                            : TextDecoration.lineThrough,
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+            ),
+          ),
+      ],
+    );
+  }
+}