Add instance data dashboard (default off).

Read-only overview of live orders, key monitors, and strategy; show options/hedge only when present. Toggle via system settings nav prefs.

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

lib/instance/instance_dashboard_register.py

@@ -0,0 +1,31 @@
+"""注册 GET /api/instance/dashboard(三所共用)."""
+from __future__ import annotations
+
+from typing import Any, Callable, Optional
+
+from flask import Flask, jsonify
+
+
+def register_instance_dashboard_routes(
+    app: Flask,
+    *,
+    login_required: Callable,
+    get_db: Callable,
+    fetch_options_positions: Optional[Callable[[], list[dict[str, Any]]]] = None,
+    hedge_enabled: bool = False,
+) -> None:
+    from lib.instance.instance_dashboard_lib import build_instance_dashboard_payload
+
+    @app.route("/api/instance/dashboard")
+    @login_required
+    def api_instance_dashboard():
+        conn = get_db()
+        try:
+            payload = build_instance_dashboard_payload(
+                conn,
+                fetch_options_positions=fetch_options_positions,
+                hedge_enabled=bool(hedge_enabled),
+            )
+            return jsonify(payload)
+        finally:
+            conn.close()