fix: re-resolve tenantId when org list is enriched by OrgResolver

TokenSync sets currentOrgId from fetchUserInfo (no tenantId).
OrgResolver later calls setOrganizations with enriched data including
tenantId. Now setOrganizations auto-resolves currentTenantId when
the org is already selected.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ui/src/auth/useOrganization.ts

@@ -26,6 +26,14 @@ export const useOrgStore = create<OrgState>((set, get) => ({
     const org = get().organizations.find((o) => o.id === orgId);
     set({ currentOrgId: orgId, currentTenantId: org?.tenantId ?? null });
   },
-  setOrganizations: (orgs) => set({ organizations: orgs }),
+  setOrganizations: (orgs) => {
+    const { currentOrgId } = get();
+    const match = currentOrgId ? orgs.find((o) => o.id === currentOrgId) : null;
+    set({
+      organizations: orgs,
+      // Re-resolve tenantId when org list is enriched (e.g., OrgResolver adds tenantId)
+      currentTenantId: match?.tenantId ?? get().currentTenantId,
+    });
+  },
   setIsPlatformAdmin: (value) => set({ isPlatformAdmin: value }),
 }));