Initial scaffold: unified customer/insurance/utilities platform

Next.js + NestJS + Prisma (MySQL) monorepo replacing the legacy PHP
internal app. Includes a session-based auth module with Argon2 password
hashing and global input validation (replacing the old app's SQL
injection and plaintext password comparison), the full target Prisma
schema for customers/insurance/utilities/shared ledger/bank register,
Docker Compose + Dockerfiles, and an Access-to-staging migration
pipeline (migration/) already run against the real source databases.

See PLAN.md and RESUME.md for the full architecture and session history.

packages/database/package.json

@@ -0,0 +1,21 @@
+{
+  "name": "@jorgecuadros/database",
+  "version": "0.1.0",
+  "private": true,
+  "main": "generated/client/index.js",
+  "types": "generated/client/index.d.ts",
+  "scripts": {
+    "generate": "prisma generate",
+    "migrate:dev": "prisma migrate dev",
+    "migrate:deploy": "prisma migrate deploy",
+    "studio": "prisma studio",
+    "validate": "prisma validate",
+    "format": "prisma format"
+  },
+  "dependencies": {
+    "@prisma/client": "^5.20.0"
+  },
+  "devDependencies": {
+    "prisma": "^5.20.0"
+  }
+}