feat: instance system settings page with risk docs, export and transfer

顶栏新增系统设置；风控说明读取 .env；数据导出与资金划转迁入三张卡片；顶栏移除导出条与手动划转。

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

crypto_monitor_gate/app.py

@@ -7033,6 +7033,7 @@ def render_main_page(page="trade", embed_mode=None):
         )
     conn.close()
     from lib.instance.instance_embed_lib import embed_context_extras
+    from lib.instance.instance_settings_lib import settings_page_context
 
     template_ctx = dict(
         page=page,
@@ -7118,6 +7119,14 @@ def render_main_page(page="trade", embed_mode=None):
             has_active_positions=bool(order_list),
         ),
         **embed_context_extras("gate"),
+        **settings_page_context(
+            page,
+            exchange_key="gate",
+            exchange_display=EXCHANGE_DISPLAY_NAME,
+            risk_status=risk_status,
+            trade_policy=TRADE_POLICY,
+            data_export_version=3,
+        ),
     )
     if embed_mode == "fragment":
         return render_template("embed_page_fragment.html", **template_ctx)
@@ -7173,6 +7182,12 @@ def stats_page():
     return render_main_page("stats")
 
 
+@app.route("/settings")
+@login_required
+def settings_page():
+    return render_main_page("settings")
+
+
 @app.route("/api/account_snapshot")
 @login_required
 def api_account_snapshot():
@@ -9487,7 +9502,7 @@ def manual_transfer():
         amount = float(request.form.get("amount", "0"))
     except Exception:
         flash("划转金额格式错误")
-        return redirect("/")
+        return redirect("/settings")
     from_account = (request.form.get("from_account") or AUTO_TRANSFER_FROM).strip()
     to_account = (request.form.get("to_account") or AUTO_TRANSFER_TO).strip()
     ok, msg, _ = execute_transfer_usdt(amount, from_account, to_account)
@@ -9502,7 +9517,7 @@ def manual_transfer():
         flash(f"手动划转成功：{amount}U {from_account}->{to_account}")
     else:
         flash(f"手动划转失败：{msg}")
-    return redirect(request.referrer or "/trade")
+    return redirect("/settings")
 
 
 def _journal_ai_chart_builder(row):