Circle

Build me a small private community site to replace Circle. Requirements: - Scope honestly: this is for a group of a few dozen people. If it needs payments or hundreds of members, self-host Discourse instead, and say so in the README. - Node + Express + better-sqlite3, server-rendered EJS plus htmx, no build step. - Spaces I create, threads with Markdown posts and replies (marked), newest-activity-first listing. - Magic-link auth: a member enters an email that must already be on my invite list and receives a login link via Resend (key in .env). No passwords, no self-signup. - Email notifications: reply-to-your-thread immediately, plus a daily digest of new threads, with per-member mute toggles. - Member profiles: name, avatar (resized with sharp), joined date, post count. - Moderation for me only: delete post, remove member. - Deploys on a $5 VPS behind Caddy; one SQLite file with a nightly dump. - Out of scope: payments and memberships, courses, live events, and mobile apps. Member operations at scale are the Circle product. - README: deploy steps and Resend setup.