refactor(portal): delete data/customers.ts fixture entirely

Replace the last two holdouts: the dashboard partner-identity fallback now uses the real useMe().partner name, and the decorative MRR sparkline (dashboard + reports) moves to a generated useMrrTrendline() — deterministic, clearly placeholder-only, until a daily MRR-snapshot job exists. Removes the dead sparkLast/sparkTrendPct vars. The data/customers.ts fixture module is now fully deleted; the partner portal carries no mock business data.

apps/portal/pages/partner/index.vue

@@ -6,18 +6,16 @@
 
 
 
-import { partnerMrrSparkline, partner as fixturePartner } from '~/data/customers'
 import type { CustomerOrg } from '~/types/partner'
 
 const toast = useToast()
 const router = useRouter()
 const partnerMode = usePartnerMode()
 
-// Real partner identity from /api/me; falls back to the fixture if the user
-// somehow lands here without partner data (middleware should've redirected
-// them, but defending the read keeps the page from crashing).
+// Real partner identity from /api/me. Middleware redirects non-partner users
+// away, but we default the name defensively so the header never crashes.
 const { partner: realPartner } = useMe()
-const partner = computed(() => realPartner.value ?? fixturePartner)
+const partnerName = computed(() => realPartner.value?.name ?? 'Partner')
 
 const wizardOpen = ref(false)
 const entryCustomer = ref<CustomerOrg | null>(null)
@@ -102,12 +100,9 @@ const newUsers30d = computed(
 const customersDelta = computed(() => (newCustomers30d.value > 0 ? `+${newCustomers30d.value} / 30d` : ''))
 const usersDelta = computed(() => (newUsers30d.value > 0 ? `+${newUsers30d.value} / 30d` : ''))
 
-// Sparkline is still fixture-driven — historical MRR isn't stored yet, so
-// the chart shape is decorative. Keep it for the design until we wire a
-// daily MRR snapshot job.
-const sparkline = partnerMrrSparkline
-const sparkLast = sparkline[sparkline.length - 1]
-const sparkTrendPct = '18.2' // matches source label
+// Decorative MRR sparkline shape — historical MRR isn't stored yet (see
+// useMrrTrendline). Purely visual until a daily MRR-snapshot job exists.
+const sparkline = useMrrTrendline()
 
 // Attention list — derived from real tenant state (no fixtures). Surfaces
 // suspended customers, provisioning errors, seat pressure, and pending/trial
@@ -270,7 +265,7 @@ function provisioned() {
 <template>
   <div>
     <PageHeader
-      :eyebrow="`${partner.name} · Partner console`"
+      :eyebrow="`${partnerName} · Partner console`"
       title="Portfolio overview"
       :subtitle="`${totalCustomers} customer organizations · ${totalUsers} end users · ${totalsLine} MRR${hasCustomPriced ? ' (+ custom-priced)' : ''}`"
     >