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>

kline_chart.py

@@ -3,6 +3,7 @@ import json
 import logging
 import os
 import re
+import sqlite3
 from datetime import datetime
 from typing import Optional
 from zoneinfo import ZoneInfo
@@ -10,6 +11,7 @@ from zoneinfo import ZoneInfo
 import requests
 
 from symbols import ths_to_codes
+from kline_store import ensure_kline_tables, get_cached_entry, save_bars
 
 logger = logging.getLogger(__name__)
 TZ = ZoneInfo("Asia/Shanghai")
@@ -213,14 +215,60 @@ def bars_to_api(bars: list) -> list[dict]:
     return result
 
 
-def fetch_market_klines(symbol: str, period: str) -> dict:
+def fetch_market_klines(symbol: str, period: str, db_path: Optional[str] = None) -> dict:
     chart_sym = ths_to_sina_chart_symbol(symbol)
     p = (period or "15m").lower()
     if p == "timeshare":
         chart_type = "line"
     else:
         chart_type = "candle"
-    bars = fetch_sina_klines(symbol, p)
+
+    bars: list = []
+    source = "remote"
+    cached_at = None
+
+    if db_path and chart_sym:
+        try:
+            conn = sqlite3.connect(db_path)
+            cached = get_cached_entry(conn, chart_sym, p)
+            conn.close()
+            if cached and cached.get("fresh"):
+                bars = cached["bars"]
+                source = "local"
+                cached_at = cached.get("updated_at")
+        except Exception as exc:
+            logger.warning("kline cache read failed %s %s: %s", chart_sym, p, exc)
+
+    if not bars:
+        remote_bars = fetch_sina_klines(symbol, p)
+        if remote_bars:
+            bars = remote_bars
+            source = "remote"
+            if db_path and chart_sym:
+                try:
+                    conn = sqlite3.connect(db_path)
+                    ensure_kline_tables(conn)
+                    save_bars(conn, chart_sym, p, remote_bars)
+                    meta = conn.execute(
+                        "SELECT updated_at FROM kline_meta WHERE chart_symbol=? AND period=?",
+                        (chart_sym, p),
+                    ).fetchone()
+                    conn.close()
+                    cached_at = meta[0] if meta else None
+                except Exception as exc:
+                    logger.warning("kline cache write failed %s %s: %s", chart_sym, p, exc)
+        elif db_path and chart_sym:
+            try:
+                conn = sqlite3.connect(db_path)
+                cached = get_cached_entry(conn, chart_sym, p)
+                conn.close()
+                if cached and cached.get("bars"):
+                    bars = cached["bars"]
+                    source = "local"
+                    cached_at = cached.get("updated_at")
+            except Exception as exc:
+                logger.warning("kline cache fallback failed %s %s: %s", chart_sym, p, exc)
+
     return {
         "symbol": symbol,
         "chart_symbol": chart_sym,
@@ -228,6 +276,8 @@ def fetch_market_klines(symbol: str, period: str) -> dict:
         "chart_type": chart_type,
         "count": len(bars),
         "bars": bars_to_api(bars),
+        "source": source,
+        "cached_at": cached_at,
     }