Scaffold Homelab Manager foundation

Monorepo (Express+TS+Drizzle/libSQL server, React+Vite+Tabler web) matching
the stack used by ScheduleTaskManager and Sloth Manager. Includes Authentik
OIDC login with local admin/operator/viewer roles (first user becomes admin),
a generalized audit log, encrypted-at-rest storage for future integration API
tokens, the DB schema for all planned modules, and the Tabler-styled app
shell/nav. Also ports the Secrets (expiry tracker) and IP Addresses (IPAM)
modules from Sloth Manager onto the new stack.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

web/src/pages/ComingSoon.tsx

@@ -0,0 +1,12 @@
+export default function ComingSoon({ title }: { title: string }) {
+  return (
+    <>
+      <h2 className="page-title mb-3">{title}</h2>
+      <div className="card">
+        <div className="card-body text-secondary">
+          This module hasn't been built yet — it's on the roadmap for a follow-up pass.
+        </div>
+      </div>
+    </>
+  );
+}