feat: 波士顿产品矩阵 — 四象限分析(明星/现金牛/问题/瘦狗)

- 数据层: product_sales表+导入脚本(93条, 酣客1-8月商品销售排行榜)
- 后端: GET /api/cma/products/matrix?entity_id&months
  横轴=销售趋势(线性回归), 纵轴=加权毛利率, 气泡=销售额
- 前端: ProductMatrix.vue ECharts散点图+象限卡片+明细表, 支持酣客/博海切换
- 验证: API四象限分类正确, 数据联动, 前端路由200, 全部通过

frontend/src/router/index.ts

@@ -28,6 +28,7 @@ const routes = [
       { path: 'cost', name: 'CostDashboard', component: () => import('@/views/CostDashboard.vue'), meta: { title: '成本分析', roles: ['ceo', 'finance', 'it'] } },
       { path: 'predict', name: 'PredictDashboard', component: () => import('@/views/PredictDashboard.vue'), meta: { title: '预测模拟', roles: ['ceo', 'finance', 'it'] } },
       { path: 'predict/accuracy', name: 'PredictAccuracy', component: () => import('@/views/PredictAccuracy.vue'), meta: { title: '预测准确率', roles: ['ceo', 'finance', 'it'] } },
+      { path: 'predict/cost-intelligence', name: 'CostIntelligence', component: () => import('@/views/CostIntelligence.vue'), meta: { title: '预测性成本智能', roles: ['ceo', 'finance', 'it'] } },
       { path: 'real-options', name: 'RealOptions', component: () => import('@/views/RealOptions.vue'), meta: { title: '实物期权计算器', roles: ['ceo', 'finance'] } },
       { path: 'action-plans', name: 'ActionPlans', component: () => import('@/views/ActionPlanLibrary.vue'), meta: { title: '改善行动', roles: ['ceo', 'finance', 'business', 'it'], editable: true } },
       { path: 'reports', name: 'ReportCenter', component: () => import('@/views/ReportCenter.vue'), meta: { title: '管理报表', roles: ['ceo', 'finance', 'business'] } },
@@ -45,6 +46,7 @@ const routes = [
       { path: 'cash-plan', name: 'CashPlan', component: () => import('@/views/CashPlan.vue'), meta: { title: '收付款计划', roles: ['ceo', 'finance', 'business', 'it'], editable: true } },
       { path: 'receivables', name: 'Receivables', component: () => import('@/views/Receivables.vue'), meta: { title: '应收款催收', roles: ['ceo', 'finance', 'business'] } },
       { path: 'growth-quality', name: 'GrowthQuality', component: () => import('@/views/GrowthQuality.vue'), meta: { title: '增长质量诊断', roles: ['ceo', 'finance', 'business', 'it'] } },
+      { path: 'product-matrix', name: 'ProductMatrix', component: () => import('@/views/ProductMatrix.vue'), meta: { title: '波士顿产品矩阵', roles: ['ceo', 'finance', 'business', 'it'] } },
       { path: 'tax-compliance', name: 'TaxCompliance', component: () => import('@/views/TaxCompliance.vue'), meta: { title: '税务合规', roles: ['ceo', 'finance', 'business', 'it'], editable: true } },
     ]
   },