v6.10.0

Premium workspace redesign and interaction-quality release. Rebuilds the desktop first-run experience, collection pulse, contextual actions, and assistant rail; hardens live themes, focus behavior, WCAG contrast, and non-activating visual verification; and aligns the browser extension with the Studio design system and clearer recovery states. Verified locally with 502 tests, 4 subtests, 15 rendered visual surfaces, accessibility contracts, dependency vulnerability audit, benchmark gate, and executable smoke test.