Refactor financial chart implementation

start.command

@@ -0,0 +1,27 @@
+#!/bin/zsh
+
+set -e
+
+PROJECT_DIR="$(cd "$(dirname "$0")" && pwd)"
+PORT=8899
+LOG_PATH="/tmp/smart-fin-chart-server.log"
+URL="http://localhost:${PORT}/"
+
+cd "$PROJECT_DIR"
+
+if ! command -v pnpm >/dev/null 2>&1; then
+  echo "未找到 pnpm，请先安装 pnpm 后重试。"
+  exit 1
+fi
+
+if lsof -n -P -iTCP:"$PORT" -sTCP:LISTEN >/dev/null 2>&1; then
+  echo "端口 ${PORT} 已有服务，直接打开现有页面。"
+else
+  nohup pnpm start >"$LOG_PATH" 2>&1 &
+  SERVER_PID=$!
+  echo "服务已启动（PID: ${SERVER_PID}），日志：${LOG_PATH}"
+  sleep 1
+fi
+
+open "$URL"
+echo "已打开：${URL}"