initial commit with charts and assistant chat

web/src/stores/chart.ts

@@ -0,0 +1,20 @@
+import { defineStore } from 'pinia'
+import { ref } from 'vue'
+
+export interface ChartState {
+  symbol: string
+  start_time: number | null
+  end_time: number | null
+  interval: string
+}
+
+export const useChartStore = defineStore('ChartStore', () => {
+  const chart_state = ref<ChartState>({
+    symbol: 'BINANCE:BTC/USDT',
+    start_time: null,
+    end_time: null,
+    interval: '15'
+  })
+
+  return { chart_state }
+})