phase-7: code restructure

server/services/index.ts

@@ -0,0 +1,10 @@
+// Barrel — re-exports every service so callers import from one path.
+export * from './BenchmarkProvider';
+export * from './CatalystAnalyst';
+export * from './DataMapper';
+export * from './LLMAnalyst';
+export * from './MarketRegime';
+export * from './PersonalFinanceAnalyzer';
+export * from './PortfolioAdvisor';
+export * from './RuleMerger';
+export * from './ScreenerEngine';