feat: pricing页面使用后台管理配置的会员套餐数据

- 从数据库MembershipPlanConfig读取动态配置
- 支持推荐标记、原价显示
- 按用户状态显示按钮

app.py

@@ -15,7 +15,7 @@ from werkzeug.utils import secure_filename
 from config import *
 from models import (db, User, Translation, TranslationCache, GuestTranslation, 
                    DataPackage, UserPackage, DynamicConfig, UserRecharge, UserRefund,
-                   MembershipPurchase, AccountTransaction)
+                   MembershipPurchase, AccountTransaction, MembershipPlanConfig, UserTypeConfig)
 from services import TranslationService, CacheService, TranslationTask
 from admin import admin_bp
 
@@ -208,7 +208,38 @@ def history():
 def pricing():
     """会员定价页"""
     user = get_current_user()
-    return render_template('pricing.html', plans=MEMBERSHIP_PLANS, user=user)
+    
+    # 从数据库读取动态配置的会员套餐
+    db_plans = MembershipPlanConfig.query.filter_by(is_active=True)\
+        .order_by(MembershipPlanConfig.sort_order).all()
+    
+    # 如果数据库没有配置，使用默认配置
+    if not db_plans:
+        plans = MEMBERSHIP_PLANS
+    else:
+        # 转换为字典格式供模板使用
+        plans = {}
+        for plan in db_plans:
+            plans[plan.plan_key] = {
+                'name': plan.display_name,
+                'price': plan.price,
+                'original_price': plan.original_price,
+                'period': plan.period,
+                'period_days': plan.period_days,
+                'description': plan.description,
+                'is_recommended': plan.is_recommended,
+                'user_type_key': plan.user_type_key,
+            }
+    
+    # 添加免费用户套餐（固定）
+    plans['free'] = {
+        'name': '免费用户',
+        'price': 0,
+        'period': 'forever',
+        'description': '基础翻译功能',
+    }
+    
+    return render_template('pricing.html', plans=plans, user=user, db_plans=db_plans)
 
 
 @app.route('/profile')