feat(strategy-map): A3 三维切片（时间/门店/产品）——切片重算 + 显式空态 + entity 隔离

- 新增 /api/cma/maps/{id}/dimension-options 与 /{id}/slice（只读）
- 时间：kpi_values.period 月/季/年；flow 求和、ratio 均值、balance/status 取最新
- 产品：product_sales + 逐月源一致性闸门（偏差>1% 不切片）
- 门店：库内无门店级事实 ⇒ available=false + reason，绝不回退总额
- 前端 MapDimensionFilter 挂到 MapCanvas，切换即 emit 切片，清除恢复 /review

frontend/src/views/MapCanvas.vue

@@ -25,6 +25,9 @@
       @toggle-chain-mode="toggleChainMode"
     />
 
+    <!-- A3 三维切片（时间/门店/产品）：切换即重算；空态显式，不回退总额 -->
+    <MapDimensionFilter :map-id="selectedMap" @slice="onDimensionSlice" />
+
     <!-- 因果链查看模式提示 -->
     <div v-if="chainMode" class="chain-mode-bar">
       <span>🔍 因果链查看模式 — 点击节点聚焦其相关因果链（再次点击取消），其余节点自动变淡</span>
@@ -202,6 +205,7 @@ import { sanitizeKrName } from "../utils/krName"
 import StrategyLayer from "../components/strategy-map/StrategyLayer.vue"
 import ConnectionLines from "../components/strategy/ConnectionLines.vue"
 import MapCanvasToolbar from "../components/map-canvas/MapCanvasToolbar.vue"
+import MapDimensionFilter from "../components/map-canvas/MapDimensionFilter.vue"
 import MapCanvasDialogs from "../components/map-canvas/MapCanvasDialogs.vue"
 import ConnectionManagerDialog from "../components/map-canvas/ConnectionManagerDialog.vue"
 import MyDialog from "../components/MyDialog.vue"
@@ -329,6 +333,44 @@ interface KpiProgressItem {
 }
 const kpiProgressMap = reactive<Record<string, KpiProgressItem>>({})
 
+// ── A3 维度切片（时间/门店/产品）──────────────────────────────
+// 切片激活时用它覆盖 objectiveLevels / kpiProgressMap 的展示值：
+// - available=false 的 KPI 一律 null，不用总额或其它期间冒充
+const dimSlice = ref<any | null>(null)
+
+/** 切片结果 → 节点键（dimKey-index）；按 目标名 对齐 map_objectives 与本地 dimensions */
+const sliceByKey = computed<Record<string, any>>(() => {
+  const out: Record<string, any> = {}
+  const payload = dimSlice.value
+  if (!payload || !Array.isArray(payload.objectives)) return out
+  for (const o of payload.objectives) {
+    const dim = dimensions.find((d: any) => d.key === o.dimension_key)
+    if (!dim) continue
+    const idx = (dim.objectives || []).findIndex((x: any) => x.name === o.name)
+    if (idx < 0) continue
+    const kpis = (o.kpis || []).map((k: any) => ({
+      code: k.kpi_code, name: k.kpi_name, actual: k.actual_value, target: k.target_value,
+      unit: k.unit, available: k.available, reason: k.reason,
+    }))
+    const ratios = (o.kpis || [])
+      .filter((k: any) => k.available && k.achievement_pct != null)
+      .map((k: any) => Number(k.achievement_pct))
+    out[`${o.dimension_key}-${idx}`] = {
+      ratio: ratios.length ? Math.round(ratios.reduce((a: number, b: number) => a + b, 0) / ratios.length) : 0,
+      level: o.has_data ? (o.level || 'gray') : 'gray',
+      kpiList: kpis,
+      slice: true,
+    }
+  }
+  return out
+})
+
+function onDimensionSlice(payload: any | null) {
+  dimSlice.value = payload
+  // 切回全景（payload=null）时恢复 /review 的原始状态
+  if (!payload) loadObjectiveLevels()
+}
+
 // 弹窗
 const showNodeDialog = ref(false)
 const editingNodeData = ref<any>(null)
@@ -429,9 +471,20 @@ function setLayerRef(key: string, el: any) {
 }
 
 function getNodeLevel(key: string): string {
+  if (dimSlice.value) return sliceByKey.value[key]?.level || 'gray'
   return objectiveLevels[key] || 'gray'
 }
 function getNodeProgress(key: string): any {
+  if (dimSlice.value) {
+    const s = sliceByKey.value[key]
+    return {
+      ratio: s?.ratio ?? 0,
+      level: s?.level || 'gray',
+      kpiList: s?.kpiList || [],
+      planSummary: kpiProgressMap[key]?.planSummary ?? null,
+      slice: true,
+    }
+  }
   return kpiProgressMap[key] || null
 }