- Each user gets a Linux + Samba account and home dir at /nas/home/<username>/
- Web UI file browsing scoped to per-user directories
- Creating/deleting users from web UI also manages system + Samba accounts
- Replaced hardcoded [data] SMB share with [homes] (per-user automatic shares)
- Removed hardcoded alexz user from entrypoint — server.js handles all user management
- Removed storage quotas from backend and frontend
- Existing users get home directories auto-created on startup (migration)
