K线本地缓存、图表交互优化与交易记录表格修复

新增 kline_store 优先读本地库；修复加载中遮挡、支持缩放与交易时段刷新；修复交易记录操作列被裁切。

Co-authored-by: Cursor <cursoragent@cursor.com>

app.py

@@ -30,6 +30,7 @@ from fee_specs import (
 from fee_sync import sync_fees_from_akshare
 from contract_profile import get_contract_profile
 from stats_engine import STATS_VIEWS, load_stats_cache, refresh_stats_cache
+from kline_store import ensure_kline_tables
 from kline_chart import generate_review_kline_chart, fetch_market_klines, MARKET_PERIODS
 from market import get_price as market_get_price, set_ths_refresh_token, get_quote_source_label
 
@@ -303,6 +304,7 @@ def init_db():
                  (key TEXT PRIMARY KEY,
                   data_json TEXT NOT NULL,
                   updated_at TEXT NOT NULL)''')
+    ensure_kline_tables(conn)
     conn.commit()
     conn.close()
 
@@ -1321,7 +1323,7 @@ def api_kline():
     if not symbol:
         return jsonify({"error": "请提供合约代码"}), 400
     try:
-        data = fetch_market_klines(symbol, period)
+        data = fetch_market_klines(symbol, period, DB_PATH)
     except Exception as exc:
         app.logger.warning("kline api failed: %s", exc)
         return jsonify({"error": str(exc)}), 500