Initial monorepo scaffold

Turborepo + pnpm monorepo for k3s homelab cluster on Intel NUCs.

- Apps: Next.js web frontend, Express API (TypeScript, Dockerfiles, k8s manifests)
- Packages: shared UI, ESLint config, TypeScript config, Drizzle DB schemas
- Infra/Ansible: bare-metal provisioning with roles for common, k3s-server, k3s-agent, hardening
- Infra/Kubernetes: ArgoCD GitOps (app-of-apps + ApplicationSets), platform components
  (cert-manager, Traefik, CloudNativePG, Valkey, Longhorn, Sealed Secrets), namespaces
- Observability: kube-prometheus-stack, Loki, Promtail as ArgoCD Applications
- CI/CD: GitHub Actions for PR builds, preview deploys, production deploys
- DX: Taskfile, utility scripts, copier templates, Ubiquiti network docs

packages/db/src/client.ts

@@ -0,0 +1,8 @@
+import { drizzle } from "drizzle-orm/postgres-js";
+import postgres from "postgres";
+import * as schema from "./schema";
+
+const connectionString = process.env.DATABASE_URL!;
+const client = postgres(connectionString);
+
+export const db = drizzle(client, { schema });

packages/db/src/index.ts

@@ -0,0 +1,2 @@
+export * from "./schema";
+export * from "./client";

packages/db/src/schema.ts

@@ -0,0 +1,9 @@
+import { pgTable, serial, text, timestamp } from "drizzle-orm/pg-core";
+
+export const users = pgTable("users", {
+  id: serial("id").primaryKey(),
+  email: text("email").notNull().unique(),
+  name: text("name"),
+  createdAt: timestamp("created_at").defaultNow().notNull(),
+  updatedAt: timestamp("updated_at").defaultNow().notNull(),
+});