chore: add AGENTS.md with build, lint, test commands and style guidelines

js/core/constants.js

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+export const INTERVALS = ['1m', '3m', '5m', '15m', '30m', '37m', '144m', '1h', '2h', '4h', '8h', '12h', '1d', '3d', '1w', '1M'];
+
+export const COLORS = {
+    tvBg: '#131722',
+    tvPanelBg: '#1e222d',
+    tvBorder: '#2a2e39',
+    tvText: '#d1d4dc',
+    tvTextSecondary: '#787b86',
+    tvGreen: '#26a69a',
+    tvRed: '#ef5350',
+    tvBlue: '#2962ff',
+    tvHover: '#2a2e39'
+};
+
+export const API_BASE = window.APP_CONFIG?.API_BASE_URL || '/api/v1';

js/core/index.js

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+export { INTERVALS, COLORS, API_BASE } from './constants.js';