feat(StockDataService): Add unified StockDataService and BaseProviderService with new stockdata interfaces, provider integrations, tests and README updates

ts/stocks/interfaces/stockdata.ts

@@ -0,0 +1,65 @@
+import type { IStockPrice } from './stockprice.js';
+import type { IStockFundamentals } from './fundamentals.js';
+
+/**
+ * Combined stock data with price and fundamentals
+ * All calculated metrics (market cap, P/E, P/B) are automatically included
+ */
+export interface IStockData {
+  /** Stock ticker symbol */
+  ticker: string;
+
+  /** Price information */
+  price: IStockPrice;
+
+  /** Fundamental data (optional - may not be available for all stocks) */
+  fundamentals?: IStockFundamentals;
+
+  /** When this combined data was fetched */
+  fetchedAt: Date;
+}
+
+/**
+ * Configuration for StockDataService
+ */
+export interface IStockDataServiceConfig {
+  /** Cache configuration */
+  cache?: {
+    /** TTL for price data (default: 24 hours) */
+    priceTTL?: number;
+    /** TTL for fundamentals data (default: 90 days) */
+    fundamentalsTTL?: number;
+    /** Max cache entries (default: 10000) */
+    maxEntries?: number;
+  };
+
+  /** Provider timeouts */
+  timeout?: {
+    /** Timeout for price providers (default: 10000ms) */
+    price?: number;
+    /** Timeout for fundamentals providers (default: 30000ms) */
+    fundamentals?: number;
+  };
+}
+
+/**
+ * Request type for getting complete stock data
+ */
+export interface ICompleteStockDataRequest {
+  ticker: string;
+  /** Whether to include fundamentals (default: true) */
+  includeFundamentals?: boolean;
+  /** Whether to enrich fundamentals with price calculations (default: true) */
+  enrichFundamentals?: boolean;
+}
+
+/**
+ * Batch request for multiple stocks
+ */
+export interface ICompleteStockDataBatchRequest {
+  tickers: string[];
+  /** Whether to include fundamentals (default: true) */
+  includeFundamentals?: boolean;
+  /** Whether to enrich fundamentals with price calculations (default: true) */
+  enrichFundamentals?: boolean;
+}