feat(web): redesign public evidence workspace

[ChelseaKR]

What changed

• redesigns the public home, Studio, dossier, and Atlas surfaces as a connected evidence workspace
• adds the shared web/interface.css visual layer and includes it in the public build allowlist
• updates the release verifier so the deployed stylesheet must match the repository byte-for-byte
• refreshes build tests, release notes, and page metadata for the new interface

Why

The previous UI treated the public tools as separate pages and obscured the core source → boundary → claim → action workflow. This release makes that chain visible, strengthens hierarchy and interaction states, and brings the desktop and mobile experiences into one coherent system.

User impact

Users get a clearer review path, more legible evidence artifacts, stronger responsive behavior, and consistent navigation across all public tools. Business logic and evidence boundaries are unchanged.

Validation

• make verify — 1,792 tests, 90.25% coverage, lint, format, strict typing, accessibility, security, i18n, claims, and conformance all green
• npm run contract
• npm run axe
• npm run rtl
• deployable public build generated 43 hashed files, including web/interface.css
• browser review at 1440×1000 and 390×844
• end-to-end Studio → dossier workflow and Atlas 2024/Spanish state verified

Rollback

Revert bc339a8 and redeploy the previous main commit if the public stylesheet or any primary workflow fails production verification.