refactor(portal): partner-mode customer switcher on real tenants

Migrate the partner-mode customer switcher, in-customer banner, sidebar tile and the team invite/teammate panels off the data/customers fixture onto the real /api/partner/tenants list (shared key, gated to partner-staff so the global shell doesn't 403 for other users). Active customer resolves by tenant _id (the key the customers page already passes to partnerMode.enter); partner-identity labels now use the real partner name from useMe. Removes the now-unused customers + CustomerOrg-list fixture export and the dead setCustomer helper. Verified in UI: switcher + enter/exit show real Baslund Test / Baslund Research ApS.

apps/portal/components/PortalSidebar.vue

@@ -14,7 +14,7 @@
 // source design.
 
 import type { IconName } from './UiIcon.vue'
-import { customers as fixtureCustomers } from '~/data/customers'
+import type { PartnerTenantDoc } from '~/types/partner'
 
 interface NavItem {
   id: string
@@ -130,11 +130,6 @@ const currentId = computed(() => {
   return ''
 })
 
-// Customer currently being acted-as (partner-in-customer mode)
-const activeCustomer = computed(() =>
-  fixtureCustomers.find((c) => c.id === partnerMode.activeCustomerId.value) || null,
-)
-
 // Workspace-switcher content matches the URL section.
 type SwitcherKind = 'customer' | 'partner' | 'in-customer'
 const switcherKind = computed<SwitcherKind>(() => {
@@ -154,12 +149,18 @@ function exitCustomer() {
 // hitting a 403 against the partner-scoped endpoint. useFetch with a stable
 // key dedupes with the /partner/customers page's request.
 const { partner, isPartnerStaff } = useMe()
-const { data: partnerTenants } = await useFetch<unknown[]>('/api/partner/tenants', {
+const { data: partnerTenants } = await useFetch<PartnerTenantDoc[]>('/api/partner/tenants', {
   key: 'partner-tenants',
   default: () => [],
   immediate: isPartnerStaff.value,
 })
 const partnerCustomerCount = computed(() => partnerTenants.value?.length ?? 0)
+
+// Customer currently being acted-as (partner-in-customer mode), resolved from
+// the real tenant list by the _id stored in partner mode.
+const activeCustomer = computed(() =>
+  (partnerTenants.value ?? []).find((c) => c._id === partnerMode.activeCustomerId.value) || null,
+)
 </script>
 
 <template>
@@ -193,7 +194,7 @@ const partnerCustomerCount = computed(() => partnerTenants.value?.length ?? 0)
         <span class="ws-tile" :style="{ background: activeCustomer?.brandColor || '#0A0A0A' }" />
         <div v-if="!collapsed" class="ws-text">
           <div class="ws-name">{{ activeCustomer?.name }}</div>
-          <div class="ws-sub mono">via NordicMSP</div>
+          <div class="ws-sub mono">via {{ partner?.name ?? 'partner' }}</div>
         </div>
       </template>