Initial commit: POE2 automated trade bot

Monitors pathofexile.com/trade2 for new listings, travels to seller
hideouts, buys items from public stash tabs, and stores them.

Includes persistent C# OCR daemon for fast screen capture + Windows
native OCR, web dashboard for managing trade links and settings,
and full game automation via Win32 SendInput.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/config.ts

@@ -0,0 +1,38 @@
+import dotenv from 'dotenv';
+import type { Config } from './types.js';
+
+dotenv.config();
+
+function env(key: string, fallback?: string): string {
+  const val = process.env[key];
+  if (val !== undefined) return val;
+  if (fallback !== undefined) return fallback;
+  throw new Error(`Missing required environment variable: ${key}`);
+}
+
+function envInt(key: string, fallback: number): number {
+  const val = process.env[key];
+  return val ? parseInt(val, 10) : fallback;
+}
+
+export function loadConfig(cliUrls?: string[]): Config {
+  const envUrls = process.env['TRADE_URLS']
+    ? process.env['TRADE_URLS'].split(',').map((u) => u.trim())
+    : [];
+
+  const tradeUrls = cliUrls && cliUrls.length > 0 ? cliUrls : envUrls;
+
+  return {
+    tradeUrls,
+    poe2LogPath: env(
+      'POE2_LOG_PATH',
+      'C:\\Program Files (x86)\\Steam\\steamapps\\common\\Path of Exile 2\\logs\\Client.txt',
+    ),
+    poe2WindowTitle: env('POE2_WINDOW_TITLE', 'Path of Exile 2'),
+    browserUserDataDir: env('BROWSER_USER_DATA_DIR', './browser-data'),
+    travelTimeoutMs: envInt('TRAVEL_TIMEOUT_MS', 15000),
+    stashScanTimeoutMs: envInt('STASH_SCAN_TIMEOUT_MS', 10000),
+    waitForMoreItemsMs: envInt('WAIT_FOR_MORE_ITEMS_MS', 20000),
+    betweenTradesDelayMs: envInt('BETWEEN_TRADES_DELAY_MS', 5000),
+  };
+}