chore: 重构前基线 — 9 个 sync task 全部 ok + akshare 移除 + mairui 资金流接入

状态：
- 9 个 sync task（stock_basic / kline_daily / kline_index / kline_5min /
  moneyflow / industry_sector / sector_features / share_snapshot / market_regime）
- 数据源：baostock + mairui + 雪球(pysnowball) + 新浪（4 个）
- 项目级约束：永远不用 akshare（已落实）
- kline_5min 改用 DB 快照统一全量/增量逻辑
- 零后端 Chrome 扩展 xueqiu_sync（独立项目）

start.sh

@@ -0,0 +1,72 @@
+#!/bin/bash
+# market_data_sync 启动脚本
+# 用法：./start.sh         启动 API（默认端口 8100）
+#       ./start.sh worker  仅启动调度器 + 同步 worker（无 web）
+#       ./start.sh sync <task_id>  手动执行一次同步任务
+#       ./start.sh status  查看调度器 / 数据源 / 同步任务状态
+
+set -e
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+cd "$SCRIPT_DIR"
+
+# ---- venv ----
+VENV_DIR="$SCRIPT_DIR/.venv"
+if [ ! -d "$VENV_DIR" ]; then
+    echo "[market_data_sync] creating venv ..."
+    python3 -m venv "$VENV_DIR"
+fi
+source "$VENV_DIR/bin/activate"
+
+# ---- deps ----
+if [ ! -f "$VENV_DIR/.deps_installed" ] || [ requirements.txt -nt "$VENV_DIR/.deps_installed" ]; then
+    echo "[market_data_sync] installing deps ..."
+    pip install --upgrade pip -q
+    pip install -r requirements.txt -q
+    touch "$VENV_DIR/.deps_installed"
+fi
+
+# ---- .env ----
+if [ ! -f "$SCRIPT_DIR/.env" ]; then
+    echo "[market_data_sync] no .env found, copying .env.example"
+    cp "$SCRIPT_DIR/.env.example" "$SCRIPT_DIR/.env"
+    echo "[market_data_sync] ⚠️  please edit .env with your real MySQL credentials before continuing"
+fi
+
+# ---- export PYTHONPATH ----
+export PYTHONPATH="$SCRIPT_DIR${PYTHONPATH:+:$PYTHONPATH}"
+
+# ---- ensure logs dir ----
+mkdir -p "$SCRIPT_DIR/logs"
+
+# ---- dispatch ----
+MODE="${1:-api}"
+case "$MODE" in
+    api)
+        PORT="${API_PORT:-8100}"
+        HOST="${API_HOST:-0.0.0.0}"
+        echo "[market_data_sync] starting API on $HOST:$PORT"
+        exec uvicorn app.api.main:app --host "$HOST" --port "$PORT" --log-level info
+        ;;
+    worker)
+        echo "[market_data_sync] starting scheduler worker (no web)"
+        exec python -m app.entrypoints.worker
+        ;;
+    sync)
+        TASK_ID="${2:?usage: ./start.sh sync <task_id>}"
+        echo "[market_data_sync] manual sync: $TASK_ID"
+        exec python -m app.entrypoints.cli sync "$TASK_ID"
+        ;;
+    status)
+        exec python -m app.entrypoints.cli status
+        ;;
+    list)
+        exec python -m app.entrypoints.cli list
+        ;;
+    datasources)
+        exec python -m app.entrypoints.cli datasources
+        ;;
+    *)
+        echo "usage: $0 {api|worker|sync <task_id>|status|list|datasources}"
+        exit 1
+        ;;
+esac