Dress the admin pages in the site letterhead master
The /admin routes were unstyled system-ui defaults next to a landing page with a committed identity. A shared admin layout now carries the same letterhead: the airmail stripe, the paper/ink/accent palette in both color schemes, serif body with the mono uppercase system voice, a masthead nav with the current section marked, and one skin for inputs, buttons, links, notices, and code across every admin page. The pages shed their ad-hoc styles and hardcoded colors, keeping only their own structure. Redundant per-page back-links gave way to the masthead nav; destructive actions (Delete, Remove, Release, Sign out) wear a quiet outline instead of the primary accent; the hosting page's paused notice trades its side-stripe for a sunk paper panel. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>