feat(industrial): update TypeScript types for Float→Decimal USD field migration (GOO-27)

Migration SQL (20260422120000_industrial_usd_to_decimal) and Prisma schema already
reflected Decimal(18,4). This commit completes the TypeScript / frontend layer.

API changes:
- Domain repo interfaces (IndustrialListingListItem, IndustrialListingDetailData,
  IndustrialParkListItem, IndustrialParkDetailData, IndustrialMarketData): USD money
  fields changed from number|null → string|null (PostgreSQL numeric serialises
  as string in raw query results)
- Raw DB interface types in Prisma repositories updated to string|null for
  Decimal columns
- toDomain() mappers: parseFloat() added where entity props require number|null
  for business-logic arithmetic
- estimate-industrial-rent handler: Number() cast on Prisma ORM Decimal objects
  before arithmetic and comparisons

Web changes:
- khu-cong-nghiep-api.ts: IndustrialParkListItem, IndustrialParkDetail,
  IndustrialListingItem, IndustrialMarketData USD fields → string|null with JSDoc
- listing-card.tsx: parseFloat() wrapping for priceUsdM2/totalLeasePrice display
- park-compare-client.tsx: parseFloat() for landRentUsdM2Year in radar score

Note: pre-existing test failures in filter-bar/login/search specs are unrelated
to this migration (confirmed present on branch before this change).

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/web/components/khu-cong-nghiep/listing-card.tsx

@@ -15,9 +15,9 @@ interface ListingCardProps {
 
 export function IndustrialListingCard({ listing }: ListingCardProps) {
   const priceText = listing.priceUsdM2
-    ? `$${listing.priceUsdM2}/${listing.pricingUnit ?? 'm²/tháng'}`
+    ? `$${parseFloat(listing.priceUsdM2)}/${listing.pricingUnit ?? 'm²/tháng'}`
     : listing.totalLeasePrice
-      ? `$${listing.totalLeasePrice.toLocaleString()}`
+      ? `$${parseFloat(listing.totalLeasePrice).toLocaleString()}`
       : 'Liên hệ';
 
   const leaseTermText =

apps/web/components/khu-cong-nghiep/park-compare-client.tsx

@@ -45,7 +45,7 @@ function normalizeScore(park: IndustrialParkDetail, metric: string): number {
     case 'area':
       return Math.min((park.totalAreaHa / 1000) * 100, 100);
     case 'rent': {
-      const rent = park.landRentUsdM2Year ?? 0;
+      const rent = park.landRentUsdM2Year != null ? parseFloat(park.landRentUsdM2Year) : 0;
       return rent > 0 ? Math.min((rent / 150) * 100, 100) : 0;
     }
     case 'infrastructure': {

apps/web/lib/khu-cong-nghiep-api.ts

@@ -23,9 +23,12 @@ export interface IndustrialParkListItem {
   occupancyRate: number;
   remainingAreaHa: number;
   tenantCount: number;
-  landRentUsdM2Year: number | null;
-  rbfRentUsdM2Month: number | null;
-  rbwRentUsdM2Month: number | null;
+  /** Decimal(18,4) serialised as string. Use parseFloat() for arithmetic. */
+  landRentUsdM2Year: string | null;
+  /** Decimal(18,4) serialised as string. Use parseFloat() for arithmetic. */
+  rbfRentUsdM2Month: string | null;
+  /** Decimal(18,4) serialised as string. Use parseFloat() for arithmetic. */
+  rbwRentUsdM2Month: string | null;
   targetIndustries: string[];
   latitude: number;
   longitude: number;
@@ -51,10 +54,14 @@ export interface IndustrialParkDetail {
   remainingAreaHa: number;
   tenantCount: number;
   establishedYear: number | null;
-  landRentUsdM2Year: number | null;
-  rbfRentUsdM2Month: number | null;
-  rbwRentUsdM2Month: number | null;
-  managementFeeUsd: number | null;
+  /** Decimal(18,4) serialised as string. Use parseFloat() for arithmetic. */
+  landRentUsdM2Year: string | null;
+  /** Decimal(18,4) serialised as string. Use parseFloat() for arithmetic. */
+  rbfRentUsdM2Month: string | null;
+  /** Decimal(18,4) serialised as string. Use parseFloat() for arithmetic. */
+  rbwRentUsdM2Month: string | null;
+  /** Decimal(18,4) serialised as string. Use parseFloat() for arithmetic. */
+  managementFeeUsd: string | null;
   infrastructure: Record<string, string> | null;
   connectivity: Record<string, { name: string; distanceKm: number }> | null;
   incentives: Record<string, unknown> | null;
@@ -84,10 +91,12 @@ export interface IndustrialParkStats {
 export interface IndustrialMarketData {
   totalParks: number;
   avgOccupancyRate: number;
-  avgLandRentUsdM2: number | null;
-  avgRbfRentUsdM2: number | null;
-  rentByRegion: { region: string; avgLandRent: number | null; avgRbfRent: number | null; parkCount: number }[];
-  rentByProvince: { province: string; avgLandRent: number | null; avgRbfRent: number | null; parkCount: number }[];
+  /** AVG(numeric) serialised as string by PostgreSQL. */
+  avgLandRentUsdM2: string | null;
+  /** AVG(numeric) serialised as string by PostgreSQL. */
+  avgRbfRentUsdM2: string | null;
+  rentByRegion: { region: string; avgLandRent: string | null; avgRbfRent: string | null; parkCount: number }[];
+  rentByProvince: { province: string; avgLandRent: string | null; avgRbfRent: string | null; parkCount: number }[];
 }
 
 // ─── Industrial Listing Types ───────────────────────────
@@ -125,9 +134,11 @@ export interface IndustrialListingItem {
   description: string | null;
   areaM2: number;
   ceilingHeightM: number | null;
-  priceUsdM2: number | null;
+  /** Decimal(18,4) serialised as string. Use parseFloat() for arithmetic. */
+  priceUsdM2: string | null;
   pricingUnit: string | null;
-  totalLeasePrice: number | null;
+  /** Decimal(18,4) serialised as string. Use parseFloat() for arithmetic. */
+  totalLeasePrice: string | null;
   minLeaseYears: number | null;
   maxLeaseYears: number | null;
   availableFrom: string | null;