refactor(ui): add barrel exports for analytics and components root

- add analytics/index.ts aggregating chart components

- add components/index.ts as main entry point

ui/src/components/analytics/index.ts

@@ -0,0 +1,14 @@
+/**
+ * Analytics Components Barrel Export
+ */
+
+export { CacheEfficiencyCard } from './cache-efficiency-card';
+export { CliproxyStatsCard } from './cliproxy-stats-card';
+export { DateRangeFilter } from './date-range-filter';
+export { ModelBreakdownChart } from './model-breakdown-chart';
+export { ModelDetailsContent } from './model-details-content';
+export { SessionStatsCard } from './session-stats-card';
+export { TokenBreakdownChart } from './token-breakdown-chart';
+export { UsageInsightsCard } from './usage-insights-card';
+export { UsageSummaryCards } from './usage-summary-cards';
+export { UsageTrendChart } from './usage-trend-chart';

ui/src/components/index.ts

@@ -0,0 +1,18 @@
+/**
+ * Components Main Barrel Export
+ *
+ * Aggregates all component domain exports.
+ * Note: ui/ (shadcn) components are imported directly, not through this barrel.
+ */
+
+// Domain exports
+export * from './account';
+export * from './analytics';
+export * from './cliproxy';
+export * from './copilot';
+export * from './health';
+export * from './layout';
+export * from './monitoring';
+export * from './profiles';
+export * from './setup';
+export * from './shared';