Remove docs/superpowers/, .claude/ config, and PRD.md from version
control (kept locally via .gitignore). Update README, CHANGELOG,
VitePress docs, and .env.example to reflect recent features: Files
page, teams, admin settings, persistent storage, and various API
improvements.
Consolidate all access to localhost:1349 — Vite dev server serves on 1349
and proxies API calls to an internal dev port (13490). Production API
defaults to 1349. Also includes strip-metadata improvements, UI component
updates, and compress operation fixes.