refactor(address): update address models and forms to use standardized fields

- Add preload relationships to address-related models
- Rename postalCode to postalCode_code for consistency
- Simplify location type handling with hidden fields
- Update validation schemas and form components
- Improve address display in patient preview

app/models/regency.ts

@@ -1,9 +1,12 @@
-import { type Base, genBase } from "./_base"
+import { type Base, genBase } from './_base'
+import type { Province } from './province'
 
 export interface Regency extends Base {
   code: string
   name: string
   province_code: string
+
+  province?: Province | null
 }
 
 export function genRegency(): Regency {