For agentic workers: REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task.
Goal: Ship a bilingual developer marketing landing at anonymous /, keeping authenticated / as the admin console.
Architecture: Vite third entry landing builds static HTML/CSS/JS; server.js splits root by session and marks HTML Cache-Control: private, no-store.
Tech Stack: Vite, vanilla TS/JS + CSS, Node server static serving
Spec: docs/superpowers/specs/2026-07-09-mailhub-landing-page-design.md