fix(cma): my-dashboard KPI period caliber (monthly period priority) + as-of/stale marks

my_dashboard picked the row with max calculated_at, so batch backfills made stale periods win (revenue/net-profit showed 2026-07, rebate rate 2026-04). Now prefer the latest monthly period, fall back to calculated_at. Frontend adds data-as-of label and stale tag; not deployed yet (push gated by another pending commit).

frontend/src/views/MyDashboard.vue

@@ -56,6 +56,7 @@
         <div class="section-header">
           <span class="section-icon">📊</span>
           <span class="section-title">我的KPI</span>
+          <span v-if="dataAsOf" class="section-asof">数据截至 {{ dataAsOf }}</span>
           <span class="section-action" @click="$router.push('/kpis')">查看全部 →</span>
         </div>
         <div v-if="kpis.length === 0" class="empty-card">
@@ -70,10 +71,12 @@
               <span class="kpi-tag" :class="'tag-' + k.level">{{ k.level === 'green' ? '达标' : k.level === 'yellow' ? '预警' : k.level === 'red' ? '危险' : '未评' }}</span>
             </div>
             <div class="kpi-value-row">
-              <div class="kpi-actual" :class="{ 'kpi-actual-empty': k.actual_value == null }">
+              <div class="kpi-actual" :class="{ 'kpi-actual-empty': k.actual_value == null, 'kpi-actual-stale': isStale(k) }">
                 {{ k.actual_value == null ? '暂无数据' : periodActual(k) }}
               </div>
-              <div class="kpi-target">{{ targetLabel(k) }} {{ k.target_value ?? '-' }}</div>
+              <div class="kpi-target">
+                <span v-if="isStale(k)" class="kpi-stale-tag">非当期</span>{{ targetLabel(k) }} {{ k.target_value ?? '-' }}
+              </div>
             </div>
             <el-progress
               :percentage="k.target_value ? Math.min(100, Math.round((k.actual_value || 0) / k.target_value * 100)) : 0"
@@ -174,6 +177,23 @@ function targetLabel(k: any) {
   return '目标(月)'
 }
 
+// 2026-09-18 口径小改（工作台期间缺口）：月期间正则 + 页面最新可得月
+const MONTH_PERIOD_RE = /^\d{4}-(0[1-9]|1[0-2])$/
+const latestMonth = computed(() => {
+  const months = kpis.value
+    .map((k: any) => String(k.period || ''))
+    .filter((p: string) => MONTH_PERIOD_RE.test(p))
+    .sort()
+  return months.length ? months[months.length - 1] : ''
+})
+// 页头「数据截至 X 月」= 本页各卡中最新的月期间（无月期间时不出该文案，不编造时点）
+const dataAsOf = computed(() => (latestMonth.value ? fmtPeriod(latestMonth.value) : ''))
+// 非当期 = 该卡的值期间早于页面最新可得月（仍保留原期间标签，只加灰标提示，不隐藏）
+function isStale(k: any): boolean {
+  const p = String(k.period || '')
+  return MONTH_PERIOD_RE.test(p) && !!latestMonth.value && p < latestMonth.value
+}
+
 function planIcon(p: any) {
   if (p.status === 'completed') return '✅'
   if (p.overdue) return '🔴'
@@ -262,6 +282,8 @@ onMounted(async () => {
 }
 .section-action { font-size: 13px; color: #409eff; cursor: pointer; }
 .section-action:hover { text-decoration: underline; }
+/* 数据截至 X 月（2026-09-18）：说明本页各卡的最新可得期间，不改渲染结构 */
+.section-asof { font-size: 12px; color: #999; margin-right: 10px; }
 .loading-wrap { padding: 40px; }
 
 /* ── 空状态 ── */
@@ -310,6 +332,12 @@ onMounted(async () => {
 .kpi-value-row { display: flex; align-items: baseline; gap: 8px; margin-bottom: 8px; }
 .kpi-actual { font-size: 24px; font-weight: 700; }
 .kpi-actual-empty { font-size: 15px; font-weight: 500; color: #999; }
+/* 非当期灰标（2026-09-18）：值期间落后于页面最新可得月时置灰，期间标签照旧显示 */
+.kpi-actual-stale { color: #999; }
+.kpi-stale-tag {
+  font-size: 11px; color: #999; background: #f0f0f0;
+  padding: 0 6px; border-radius: 4px; margin-right: 6px;
+}
 .kpi-target { font-size: 12px; color: #999; }
 
 /* ── 改善行动 ── */