Add separate kline.db and pre-seed small-account four-product K-lines on startup.

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

modules/market/routes.py

@@ -35,6 +35,7 @@ def register(deps) -> None:
     expire_old_plans = deps.expire_old_plans
     TZ = deps.tz
     DB_PATH = deps.db_path
+    KLINE_DB_PATH = deps.kline_db_path
     UPLOAD_DIR = deps.upload_dir
     OPEN_TYPES = deps.open_types
     EXIT_TRIGGERS = deps.exit_triggers
@@ -147,7 +148,7 @@ def register(deps) -> None:
             from modules.core.trading_context import get_trading_mode
 
             data = fetch_market_klines(
-                symbol, period, DB_PATH, prefer_ctp=False,
+                symbol, period, KLINE_DB_PATH, prefer_ctp=False,
             )
         except Exception as exc:
             app.logger.warning("kline api failed: %s", exc)
@@ -175,7 +176,7 @@ def register(deps) -> None:
             sub = kline_hub.subscribe(symbol, period, market_code, sina_code)
             try:
                 kline_data = fetch_market_klines(
-                    symbol, period, DB_PATH, prefer_ctp=False,
+                    symbol, period, KLINE_DB_PATH, prefer_ctp=False,
                 )
                 if kline_data.get("bars"):
                     yield sse_format("kline", kline_data)