Remove contract profile from navigation and retire its routes.

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

app.py

@@ -45,7 +45,6 @@ from fee_specs import (
     purge_non_ctp_fee_rates,
 )
 from nav_settings import NAV_TOGGLES, get_nav_items, nav_enabled, save_nav_items
-from contract_profile import get_contract_profile
 from stats_engine import STATS_VIEWS, load_stats_cache, refresh_stats_cache
 from kline_store import ensure_kline_tables
 from kline_stream import kline_hub, sse_format
@@ -1601,40 +1600,14 @@ def api_market_quote():
 
 @app.route("/contract")
 @login_required
-@require_nav("contract")
 def contract_profile_page():
-    symbol = request.args.get("symbol", "").strip()
-    profile = None
-    error = None
-    if symbol:
-        try:
-            profile = get_contract_profile(symbol)
-            if not profile:
-                error = "未查询到该合约简介，请检查合约代码"
-        except Exception as exc:
-            app.logger.warning("contract profile failed: %s", exc)
-            error = f"查询失败：{exc}"
-    return render_template(
-        "contract.html",
-        symbol=symbol,
-        profile=profile,
-        error=error,
-    )
+    return redirect(url_for("positions"))
 
 
 @app.route("/api/contract_profile")
 @login_required
 def api_contract_profile():
-    symbol = request.args.get("symbol", "").strip()
-    if not symbol:
-        return jsonify({"error": "请提供合约代码"}), 400
-    try:
-        profile = get_contract_profile(symbol)
-    except Exception as exc:
-        return jsonify({"error": str(exc)}), 500
-    if not profile:
-        return jsonify({"error": "未查询到合约简介"}), 404
-    return jsonify(profile)
+    return jsonify({"error": "品种简介功能已移除"}), 404
 
 
 @app.route("/fees", methods=["GET", "POST"])