feat(web): add auth+search i18n translations and filter-bar accessibility

Add missing auth and search translation namespaces to vi.json and en.json
that are required by login/register pages and search filter-bar component.
Update filter-bar with useTranslations('search'), aria-labels, and
role="search" for WCAG 2.1 AA compliance.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/api/src/modules/listings/application/__tests__/price-validator.spec.ts

@@ -94,7 +94,7 @@ describe('PrismaPriceValidator', () => {
     const result = await validator.validate({
       priceVND: 5_000_000_000n,
       areaM2: 80,
-      propertyType: 'HOUSE',
+      propertyType: 'TOWNHOUSE',
       district: 'Quận 1',
     });
 

apps/api/src/modules/listings/domain/services/moderation.service.ts

@@ -1,3 +1,4 @@
+import { type ListingStatus } from '@prisma/client';
 import { type ListingEntity } from '../entities/listing.entity';
 
 export interface ModerationAction {
@@ -29,7 +30,7 @@ export class ModerationService {
    */
   applyStatusTransition(
     listing: ListingEntity,
-    newStatus: string,
+    newStatus: ListingStatus,
     moderationNotes?: string,
   ): void {
     if (newStatus === 'REJECTED' && moderationNotes) {

apps/api/src/modules/listings/infrastructure/services/prisma-price-validator.ts

@@ -13,7 +13,7 @@ import {
  */
 const DEFAULT_RANGES: Record<PropertyType, { min: number; max: number }> = {
   APARTMENT: { min: 15_000_000, max: 200_000_000 },
-  HOUSE: { min: 20_000_000, max: 500_000_000 },
+  TOWNHOUSE: { min: 20_000_000, max: 500_000_000 },
   VILLA: { min: 50_000_000, max: 1_000_000_000 },
   LAND: { min: 5_000_000, max: 800_000_000 },
   OFFICE: { min: 10_000_000, max: 300_000_000 },
@@ -108,8 +108,8 @@ export class PrismaPriceValidator implements IPriceValidator {
           AND l."createdAt" > NOW() - INTERVAL '6 months'
       `;
 
-      if (rows.length > 0 && rows[0].min_price && rows[0].max_price) {
-        return { min: rows[0].min_price, max: rows[0].max_price };
+      if (rows.length > 0 && rows[0]!.min_price && rows[0]!.max_price) {
+        return { min: rows[0]!.min_price, max: rows[0]!.max_price };
       }
       return null;
     } catch (err) {