feat(reports): partner and platform analytics

Partner reports — health cohorts, revenue-by-plan, top customers, signup/churn cohorts, plus saved custom reports (create/list/delete). Operator platform-wide reports (MRR, revenue by plan, top tenants, growth). Replaces the reports fixtures in both apps.

apps/portal/components/partner/NewCustomReportModal.vue

@@ -4,7 +4,22 @@
 // recipients + format + live summary.
 
 defineProps<{ open: boolean }>()
-const emit = defineEmits<{ close: []; created: [name: string] }>()
+const emit = defineEmits<{
+  close: []
+  created: [
+    payload: {
+      name: string
+      description: string
+      metrics: string[]
+      filterPlan: string
+      filterStatus: string
+      groupBy: string
+      schedule: string
+      recipients: string[]
+      format: string
+    },
+  ]
+}>()
 
 const METRICS = [
   { id: 'mrr', label: 'MRR', group: 'Revenue' },
@@ -42,7 +57,7 @@ const grouped = computed(() => {
   const out: Record<string, typeof METRICS[number][]> = {}
   for (const m of METRICS) {
     out[m.group] = out[m.group] || []
-    out[m.group].push(m)
+    out[m.group]!.push(m)
   }
   return out
 })
@@ -184,7 +199,7 @@ function toggle(id: string) {
       <UiButton
         variant="primary"
         :disabled="!name || metrics.length === 0"
-        @click="emit('created', name); emit('close')"
+        @click="emit('created', { name, description, metrics, filterPlan, filterStatus, groupBy, schedule, recipients: recipients.split(',').map((r) => r.trim()).filter(Boolean), format }); emit('close')"
       >
         <template #leading><UiIcon name="check" :size="14" /></template>
         Create report