v1.4.0-beta.5

What's Changed

• feat(ui): restore header bar for detached windows on macOS by @PaulHorn in #457
• feat(sidebar): restore left rail with 3 states + rail-to-rail view DnD by @PaulHorn in #458
• feat(ui): responsive canvas toolbar that collapses to a corner button by @PaulHorn in #460
• fix(browser): keep webview-backed tabs mounted so they don't reload on tab switch (#459) by @PaulHorn in #461
• feat(shortcuts): customizable next/previous workspace shortcuts by @PaulHorn in #462
• chore(release): bump version to 1.4.0-beta.5 by @PaulHorn in #463

Full Changelog: v1.4.0-beta.4...v1.4.0-beta.5