Show okx_sim/okx_live and gate live API fields by matching mode.

In sim, hide LIVE/API keys and expose simulated fund settings in env UI.

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

app.py

@@ -5046,11 +5046,18 @@ def render_main_page(page="options", embed_mode=None):
     options_funding_usdt = None
     options_trading_usdt = None
     _sim_mode_for_header = False
+    _exchange_display_for_header = EXCHANGE_DISPLAY_NAME
     try:
+        from lib.sim.mode_lib import exchange_mode_label as _exchange_mode_label
         from lib.sim.mode_lib import is_sim_mode as _is_sim_mode_fn
+
         _sim_mode_for_header = bool(_is_sim_mode_fn(get_db))
+        _exchange_display_for_header = _exchange_mode_label(
+            is_sim=_sim_mode_for_header, exchange_key="okx"
+        )
     except Exception:
         _sim_mode_for_header = False
+        _exchange_display_for_header = EXCHANGE_DISPLAY_NAME
     if (
         OKX_OPTIONS_ENABLED
         and embed_mode != "fragment"
@@ -5258,7 +5265,7 @@ def render_main_page(page="options", embed_mode=None):
         key_rule_ctx=key_rule_ctx,
         funds_fmt=format_funds_u,
         options_funding_label=options_funding_label,
-        exchange_display=EXCHANGE_DISPLAY_NAME,
+        exchange_display=_exchange_display_for_header,
         options_enabled=OKX_OPTIONS_ENABLED,
         trading_mode=("sim" if _sim_mode_for_header else "live"),
         is_sim_mode=_sim_mode_for_header,
@@ -5532,10 +5539,18 @@ def api_account_snapshot():
         except Exception:
             options_unrealized_pnl = None
     _show_perp_funds = show_perp_funds_enabled(exchange_key="okx")
+    try:
+        from lib.sim.mode_lib import exchange_mode_label as _ex_mode_label
+        from lib.sim.mode_lib import is_sim_mode as _is_sim
+
+        _snapshot_mode_label = _ex_mode_label(is_sim=_is_sim(get_db), exchange_key="okx")
+    except Exception:
+        _snapshot_mode_label = EXCHANGE_DISPLAY_NAME
     return jsonify({
         "funding_usdt": funding_usdt,
         "current_capital": current_capital,
         "show_perp_funds": _show_perp_funds,
+        "exchange_mode_label": _snapshot_mode_label,
         "options_funding_usdc": options_funding_usdc,
         "options_funding_usdt": options_funding_usdt,
         "options_trading_usdc": options_trading_usdc,