feat(ui): strategy config form and backend endpoint

app.py

@@ -5,7 +5,7 @@ Provides mock metrics for PnL, drawdown, and win rate.
 """
 
 from flask import Flask, render_template, jsonify, request
-import random
+import os
 from datetime import datetime, timedelta
 from data.connectors import create_moomoo_client, Interval
 
@@ -14,6 +14,8 @@ app = Flask(__name__)
 # Initialize MoomooClient in mock mode (using our LLM scenario generator)
 client = create_moomoo_client(mock_mode=True)
 
+STRATEGY_CONFIG_PATH = os.path.join(os.path.dirname(__file__), 'data', 'strategy_configs.json')
+
 @app.route('/')
 def dashboard():
     """Serve the dashboard HTML page."""
@@ -91,6 +93,30 @@ def market_data(symbol):
     except Exception as e:
         return jsonify({'error': str(e)}), 500
 
+@app.route('/api/strategy-config', methods=['POST'])
+def save_strategy_config():
+    """Save strategy configuration to a JSON file (simple local persistence)."""
+    try:
+        data = request.get_json(force=True) or {}
+        os.makedirs(os.path.join(os.path.dirname(__file__), 'data'), exist_ok=True)
+        configs = []
+        if os.path.exists(STRATEGY_CONFIG_PATH):
+            import json as _json
+            with open(STRATEGY_CONFIG_PATH, 'r') as f:
+                try:
+                    configs = _json.load(f)
+                except Exception:
+                    configs = []
+        # Append with timestamp
+        data['savedAt'] = datetime.now().isoformat()
+        configs.append(data)
+        import json
+        with open(STRATEGY_CONFIG_PATH, 'w') as f:
+            json.dump(configs, f, indent=2)
+        return jsonify({'status': 'ok', 'count': len(configs)})
+    except Exception as e:
+        return jsonify({'status': 'error', 'error': str(e)}), 500
+
 @app.route('/health')
 def health():
     """Health check endpoint."""