Add hub iframe embed shell with tab fragment API.

Replace full-page soft nav with a persistent shell and /api/embed/page loads so tab switches in the hub iframe avoid document.write flicker.

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

crypto_monitor_gate/app.py

@@ -6702,7 +6702,7 @@ def sync_trade_records_from_exchange(conn, force=False):
 
 
 # ====================== 主页面 ======================
-def render_main_page(page="trade"):
+def render_main_page(page="trade", embed_mode=None):
     now = app_now()
     trading_day = get_trading_day(now)
     list_window = _list_window_from_request()
@@ -6726,7 +6726,10 @@ def render_main_page(page="trade"):
     for o in raw_order_list:
         order_list.append(enrich_order_item(row_to_dict(o), current_capital))
     exchange_pnl_sync = {}
-    if exchange_private_api_configured() and not request_is_hub_soft_nav():
+    if exchange_private_api_configured() and not request_is_hub_soft_nav() and embed_mode not in (
+        "fragment",
+        "shell",
+    ):
         try:
             exchange_pnl_sync = sync_trade_records_from_exchange(conn) or {}
         except Exception as e:
@@ -6786,8 +6789,9 @@ def render_main_page(page="trade"):
             trend_cfg=app.extensions.get("strategy_trend_cfg"),
         )
     conn.close()
-    return render_template(
-        "index.html",
+    from instance_embed_lib import embed_context_extras
+
+    template_ctx = dict(
         page=page,
         key=key_list,
         key_history=key_history,
@@ -6859,7 +6863,17 @@ def render_main_page(page="trade"):
         kline_timeframe=KLINE_TIMEFRAME,
         exchange_pnl_sync=exchange_pnl_sync,
         **strategy_extra,
+        **embed_context_extras("gate"),
     )
+    if embed_mode == "fragment":
+        return render_template("embed_page_fragment.html", **template_ctx)
+    if embed_mode == "shell":
+        return render_template(
+            "embed_shell.html",
+            initial_tab=page,
+            **template_ctx,
+        )
+    return render_template("index.html", **template_ctx)
 
 
 @app.route("/api/sync_exchange_pnl")
@@ -9321,6 +9335,8 @@ try:
         reconcile_hub_flat_fn=reconcile_hub_external_close,
         risk_status_fn=hub_account_risk_status,
         user_close_fn=hub_user_initiated_close,
+        render_main_page_fn=render_main_page,
+        login_required_fn=login_required,
     )
 except Exception as _hub_err:
     print(f"[hub_bridge] gate: {_hub_err}")