fix: avoid Binance /trade hang when exchange API is unreachable.

Add a short ccxt timeout and isolate orphan live-position loading so page render can fail soft.

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

crypto_monitor_binance/app.py

@@ -483,6 +483,7 @@ app.config["UPLOAD_FOLDER"] = UPLOAD_FOLDER
 # Binance USDT 本位永续(ccxt unified: defaultType=swap)
 exchange = ccxt.binance({
     "enableRateLimit": True,
+    "timeout": 5000,
     "options": {
         "defaultType": "swap",
         "defaultMarginMode": _BINANCE_DEFAULT_MARGIN_MODE,
@@ -7315,7 +7316,10 @@ def render_main_page(page="trade", embed_mode=None):
         )
     orphan_live_positions = []
     if plan.orphan_live and not order_list and exchange_private_api_configured():
-        orphan_live_positions = list_orphan_live_positions(conn)
+        try:
+            orphan_live_positions = list_orphan_live_positions(conn)
+        except Exception:
+            orphan_live_positions = []
     conn.close()
     from lib.instance.instance_embed_lib import embed_context_extras
     from lib.instance.instance_settings_lib import settings_page_context