chore: add Coolify deployment scaffolding (Dockerfiles, prod compose, git hygiene)

- apps/api/Dockerfile: build NestJS, run prisma migrate deploy on start
- apps/web/Dockerfile + nginx.conf: build Vite, serve static, proxy /api -> api
- docker-compose.coolify.yml: full prod stack (postgres, redis, minio, keycloak, api, web)
- .dockerignore / .gitignore / .gitattributes

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

apps/api/i18n/en/translation.json

@@ -0,0 +1,15 @@
+{
+  "errors": {
+    "not_found": "Resource with id={id} not found",
+    "conflict_idnp": "IDNP {idnp} already exists in the system",
+    "idnp_invalid": "Invalid IDNP (13 digits, wrong check digit)",
+    "recomandare_sot": "Cannot select the employee's spouse as an internal recommendation",
+    "unauthorized": "Unauthorized",
+    "forbidden": "Insufficient permissions"
+  },
+  "validation": {
+    "required": "Required field",
+    "email": "Invalid email address",
+    "phone": "Invalid phone number"
+  }
+}