fix(options): speed up chain refresh with fast path and non-blocking UI

Skip full REST tickers when WS is warm, seed subscriptions off-request, and keep the old chain visible while refreshing.

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

lib/options/options_register.py

@@ -374,6 +374,24 @@ def register_options_routes(app: Flask, cfg: dict[str, Any]) -> None:
         u = (request.args.get("underlying") or cfg["default_underly"]).upper()
         # 热更新:链展示天数每次读 env,保存后刷新链即可
         chain_max_dte = _env_float("OKX_OPTIONS_CHAIN_MAX_DTE_DAYS", float(cfg.get("chain_max_dte_days") or 14))
+        fast = (request.args.get("fast") or "").strip().lower() in ("1", "true", "yes")
+        force_tickers = (request.args.get("force_tickers") or "").strip().lower() in ("1", "true", "yes")
+        watch_exp = (request.args.get("exp_time") or "").strip() or None
+        live_index = None
+        live_tickers = None
+        ws_fresh = False
+        try:
+            from lib.options.options_quote_live_lib import options_quote_live
+
+            ws_fresh = options_quote_live.is_ws_fresh()
+            live_index = options_quote_live.index_px_for(u)
+            live_tickers = options_quote_live.as_okx_tickers(u) or None
+        except Exception:
+            pass
+        # fast: WS 已热则跳过整家族 REST tickers(最慢的一步),用 WS 缓存覆盖
+        fetch_tickers = True
+        if fast and ws_fresh and not force_tickers:
+            fetch_tickers = False
         try:
             chain = cfg["build_option_chain"](
                 ex,
@@ -381,6 +399,10 @@ def register_options_routes(app: Flask, cfg: dict[str, Any]) -> None:
                 max_dte_days=chain_max_dte,
                 itm_only=False,
                 itm_max_dist_usd=cfg["itm_max_dist"],
+                index_px=live_index,
+                tickers_override=live_tickers,
+                fetch_tickers=fetch_tickers,
+                force_tickers=force_tickers,
             )
         except Exception as e:
             return jsonify({"ok": False, "msg": f"加载期权链失败: {e}"})
@@ -393,8 +415,7 @@ def register_options_routes(app: Flask, cfg: dict[str, Any]) -> None:
             try:
                 from lib.options.options_quote_live_lib import options_quote_live
 
-                watch_exp = (request.args.get("exp_time") or "").strip() or None
-                options_quote_live.seed_from_chain(chain, exp_time=watch_exp)
+                options_quote_live.schedule_seed_from_chain(chain, exp_time=watch_exp)
             except Exception:
                 pass
         if not expiries:
@@ -407,6 +428,8 @@ def register_options_routes(app: Flask, cfg: dict[str, Any]) -> None:
                     "ask_liq_filter_enabled": ask_liq_filter,
                     "budget_buffer": budget_buffer,
                     "trade_budget": cfg["trade_budget"],
+                    "chain_fast": fast,
+                    "ws_fresh": ws_fresh,
                 }
             )
         return jsonify(
@@ -418,6 +441,9 @@ def register_options_routes(app: Flask, cfg: dict[str, Any]) -> None:
                 "budget_buffer": budget_buffer,
                 "trade_budget": cfg["trade_budget"],
                 "quote_live": True,
+                "chain_fast": fast,
+                "ws_fresh": ws_fresh,
+                "tickers_fetched": fetch_tickers,
             }
         )