Role-aware registration: Customer/Employee/Owner/Contractor/Sub-Con/Vendor

- New "Your role" options matching the portal roles
- Customer/Owner = self; Employee shows an Employee ID field;
  Contractor/Sub-Con/Vendor show their ID + property owner name
- Validation adapts per role

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/components/portal/data.ts

@@ -75,11 +75,12 @@ export const countryCodes: CountryCode[] = [
 ];
 
 export const relationshipOptions = [
-  "Homeowner",
+  "Customer",
+  "Employee",
+  "Owner",
   "Contractor",
-  "Property Manager",
-  "Tenant",
-  "Authorized Representative",
+  "Sub-Con",
+  "Vendor",
 ];
 
 export const sectors = [