Rebuild the hub on Bun: Elysia API, Better Auth, Drizzle, Next.js website

The hub becomes a Bun monorepo: apps/api (Elysia, Better Auth for accounts, roles, bans, proxy device
sign-in and JWT keys; tagline linking, presence and the console as before), packages/db (Drizzle; Postgres in
production, PGlite in development and tests), and the Next.js website from apps/web. Self-hostable with
docker compose; the website deploys to Vercel-style hosts, the API to any that runs Bun or containers. The
first version, in Go, is removed.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

packages/db/drizzle.config.ts

@@ -0,0 +1,3 @@
+import { defineConfig } from "drizzle-kit";
+
+export default defineConfig({ dialect: "postgresql", schema: "./src/schema.ts", out: "./drizzle" });