refactor: unify three-exchange instance UI with shared templates

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

tests/test_instance_embed_lib.py

@@ -1,7 +1,11 @@
 from lib.instance.instance_embed_lib import (
     EMBED_TABS,
+    embed_context_extras,
+    include_transfer_block,
     path_to_embed_tab,
     rewrite_embed_dest,
+    ui_open_guard_enabled,
+    ui_orphan_recovery_enabled,
 )
 
 
@@ -24,3 +28,15 @@ def test_embed_tabs_cover_main_nav():
     assert "trade" in EMBED_TABS
     assert "key_monitor" in EMBED_TABS
     assert "records" in EMBED_TABS
+
+
+def test_embed_context_extras_unified_ui_flags():
+    for ex in ("binance", "okx", "gate"):
+        assert include_transfer_block(ex) is True
+    assert ui_open_guard_enabled("okx") is True
+    assert ui_open_guard_enabled("binance") is False
+    assert ui_orphan_recovery_enabled("binance") is True
+    assert ui_orphan_recovery_enabled("gate") is False
+    ctx = embed_context_extras("gate")
+    assert ctx["order_rule_tips_tpl"] == "order_monitor_rule_tips_gate.html"
+    assert ctx["include_transfer_block"] is True