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>

server/src/types/express-session.d.ts

@@ -0,0 +1,16 @@
+import "express-session";
+
+declare module "express-session" {
+  interface SessionData {
+    user?: {
+      sub: string;
+      email?: string;
+      name?: string;
+      idToken?: string;
+    };
+    pendingAuth?: {
+      codeVerifier: string;
+      state: string;
+    };
+  }
+}