fix: resolve TS build errors - missing schema fields, types, and packages

- Add mustChangePassword field to User model in schema.prisma
- Add latitude/longitude fields to Client model (matching existing migration)
- Remove @nestjs/serve-static import from app.module (not in dependencies)
- Add @types/multer to devDependencies and type multer config explicitly
- Create migration for mustChangePassword column

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

packages/db/prisma/migrations/20260504100000_add_user_must_change_password/migration.sql

@@ -0,0 +1,2 @@
+-- AlterTable
+ALTER TABLE "users" ADD COLUMN "mustChangePassword" BOOLEAN NOT NULL DEFAULT false;