How do I keep my work and personal apps separate in Spanbox, like workspaces?

Separation is built in, because every account runs in its own isolated session. Add your work Gmail/Slack/WhatsApp and your personal ones as separate entries and they never mix, no shared cookies, no accidental cross-posting. It's the same clean split you'd get from two browser profiles, without juggling two browsers. Name each one and you always know which is which.