feat: upgrade major dependencies to latest versions

- Prisma 6.19 → 7.7 (driver adapter pattern, prisma.config.ts)
- TypeScript 5.9 → 6.0 (ignoreDeprecations, CSS type declarations)
- Vitest 3.2 → 4.1
- Pino 9.14 → 10.3
- @types/node 22.x → 25.x

All 307 tests pass, typecheck clean, build succeeds.

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

prisma/seed.ts

@@ -1,3 +1,4 @@
+import { PrismaPg } from '@prisma/adapter-pg';
 import {
   PrismaClient,
   UserRole,
@@ -6,11 +7,14 @@ import {
   ListingStatus,
   Direction,
 } from '@prisma/client';
+import pg from 'pg';
 import { importMarketData } from '../scripts/import-market-data';
 import { HCM_DISTRICTS, HANOI_DISTRICTS, DANANG_DISTRICTS, CITY_COORDINATES } from '../scripts/seed-districts';
 import { PLANS, seedPlans } from '../scripts/seed-plans';
 
-const prisma = new PrismaClient();
+const pool = new pg.Pool({ connectionString: process.env['DATABASE_URL'] });
+const adapter = new PrismaPg(pool);
+const prisma = new PrismaClient({ adapter });
 
 // =============================================================================
 // Sample coordinates for HCM districts