chore: integrate firestore for particles (#32)

* plumb for firestore

* chore: cleanup orion api to only include essentials

* setup boilerplate for data and rendering

This includes zod types creation for API response validation, and
exploration of path based resolution of rendering particles.

* chore: structure container particles for rendering children

* wire firestore crud for particles

* integrate visibility to particles

* docs: explain particle view resolver

js/src/lib/utils.ts

@@ -4,3 +4,8 @@ import { twMerge } from "tailwind-merge"
 export function cn(...inputs: ClassValue[]) {
   return twMerge(clsx(inputs))
 }
+
+export function getInitials(email: string): string {
+  const prefix = email.split("@")[0] ?? "";
+  return prefix.slice(0, 2).toUpperCase();
+}