refactor: PG-only 迁移 + 龙虎榜/tick/moneyflow 同步 + stock_code 统一 + mairui 编码修复

## 1. PG-only 重构
- 删 app/core/db/connection.py + schema.py (MySQL 路径)
- 新 app/core/db/{orm,models,pg_bootstrap}.py — SQLAlchemy 2.x ORM 一键建表
- 16 张业务表全在 market_data schema,原生 TIMESTAMPTZ / JSONB / Float / TEXT
- requirements.txt 删 PyMySQL 路径,加 psycopg2

## 2. 同步任务扩展(3 个新 task)
- **tick_trade** (mairui hsrl/zbjy):当天逐笔交易,21:00 发布
- **moneyflow** (mairui hsstock/history/transaction):个股资金流,21:30 发布
- **longhubang** (akshare):龙虎榜聚合层 + 席位层(2 张新表)
  - 长虎榜放宽 akshare 政策:仅"无替代源 + 烟测通过"场景允许
  - data_eastmoney 私有 API 不需要(akshare 烟测通过)
- 3-timer 设计:
  - 15:30 market-sync.service (8 base tasks via runall_once)
  - 21:05 market-sync-tick.service (tick_trade)
  - 21:35 market-sync-moneyflow.service (moneyflow)
  - 22:00 market-sync-lhb.service (longhubang,新加)
- bin/systemd/ 新增 tick / moneyflow / lhb 各 1 对 service+timer
- bin/market_sync_*_run.sh wrapper 脚本(不做法定节假日过滤,fail-open)

## 3. stock_code 统一为带 SH/SZ/BJ 前缀
- 历史 bug:stocks.code 用 SH600519,但 kline/moneyflow/tick_trade/kline_5min
  /stock_sector_map/industry 6 张表用纯 6 位 600519,跨表 JOIN 全部 0 行
- 新增 to_hermes() 工具:6位 / 9位(mairui `000001.SZ` 格式)→ 统一 SH000001
- 5 个 task 改写:用 to_hermes(code6) 写入 stock_code
- 一次性迁移 6 张表存量 154M 行(CASE WHEN 探测 + 去重 + 加前缀)
- ORM: stock_sector_map.stock_code / industry.code String(6)→String(10)

## 4. Bug 修复
- **share table stock_code 格式**:之前写 6 位不带前缀,与 stocks 不一致
  → 修 task_share_snapshot + 一次性 UPDATE 63,417 行加前缀
- **share_snapshot warning 状态错填 last_error**:
  → 加 mark_sync_warning() 走专用路径,不写 last_failure_at / last_error
- **schedule config lastRun 不同步**:
  → 加 update_job_status_for_dataset(),SyncTask.run() 完成后自动镜像
  → cli/runall 触发的 task 也能更新 schedule config

## 5. mairui UTF-8 编码修复
- 历史 bug:mairui.py:_fetch 用 latin-1 兜底解码,把所有 UTF-8 中文名
  double-encoded 写入 stocks.name(如 `歌华有线` 变成 `æ\xad\x8cå\x8d\x8e...`)
- 加 _decode_response():UTF-8 → GBK → latin-1 兜底
- 一次性修复 stocks.name 5,213 行:
  - 4,370 行 (encode('latin-1').decode('utf-8') 反向解码)
  - 616 行 (含 fullwidth Ａ,宽松 printable 检查)
  - 820 行 (mid-character 截断,重新从 mairui 拉)

## 6. 测试
- tests/test_smoke.py: TASKS 10→11, SYNC_DEFINITIONS 10→11
- tests/test_schema_models.py: 16→18 张表,新增 longhubang_daily/seat
- pytest 11/11 passed

## 验证
- 6 张表 0 残留无前缀行
- stocks JOIN kline_stock / kline_5min / moneyflow / tick_trade / stock_sector_map:88-100% 命中
- 5,213 stocks.name 全部正确 UTF-8 中文
- pytest 11/11 passed

scripts/run_all_sync.sh

@@ -57,6 +57,10 @@ case "${1:-all}" in
     4|kline_daily)        run_step "4_kline_daily" "kline_daily" "--workers 20" ;;
     5|share_snapshot)     run_step "5_share_snapshot" "share_snapshot" "--workers 10" ;;
     6|market_regime)      run_step "6_market_regime" "market_regime" ;;
+    7|kline_5min)         run_step "7_kline_5min" "kline_5min" "--workers 10" ;;
+    8|moneyflow)          run_step "8_moneyflow" "moneyflow" "--workers 10" ;;
+    9|sector_features)    run_step "9_sector_features" "sector_features" ;;
+    10|tick_trade)        run_step "10_tick_trade" "tick_trade" "--workers 5 --force" ;;
     all)
         run_step "1_stock_basic" "stock_basic" || exit 1
         run_step "2_industry_sector" "industry_sector" || exit 1
@@ -64,10 +68,14 @@ case "${1:-all}" in
         run_step "4_kline_daily" "kline_daily" "--workers 20" || exit 1
         run_step "5_share_snapshot" "share_snapshot" "--workers 10" || exit 1
         run_step "6_market_regime" "market_regime" || exit 1
-        echo "$LOG_PREFIX ✓ 全部 6 步完成" | tee -a "$RUN_LOG"
+        run_step "7_kline_5min" "kline_5min" "--workers 10" || exit 1
+        run_step "8_moneyflow" "moneyflow" "--workers 10" || exit 1
+        run_step "9_sector_features" "sector_features" || exit 1
+        run_step "10_tick_trade" "tick_trade" "--workers 5 --force" || exit 1
+        echo "$LOG_PREFIX ✓ 全部 10 步完成" | tee -a "$RUN_LOG"
         ;;
     *)
-        echo "usage: $0 [1|2|3|4|5|6|all]"
+        echo "usage: $0 [1|2|3|4|5|6|7|8|9|10|all]"
         exit 1
         ;;
 esac