[sybohy]

The supported-device embed mixes dark rows with a white document canvas and low-contrast logos. Device rows are also hard to scan: identifiers crowd the name, feature badges jump to a separate column, and generic compatibility prose repeats the same accessory requirements.

Match the hosted document’s color scheme to the docs theme and use a white tile for manufacturer logos, since monochrome catalog assets are not necessarily dark-mode variants. Present device name/type, a consistent feature list with support icons, and grouped requirement notes with bridge/keypad icons and affected features. Move all model identifiers/provider information into keyboard-accessible Model details while keeping it searchable. Suppress known boilerplate while preserving specific constraints and conditional/beta support. Remove the duplicate catalog footer inside iframes; standalone visits retain it and docs retain their existing fallback link.

Validation:

• All 75 tests, typecheck, lint, library/examples builds, and bundle-size check pass (Ecosystem 67.18 kB gzip, budget 80 kB).
• Built embed tested inside real August and KeyInCode production guides using real Ecosystem data: 7/13 devices, dark→light→dark with light OS preference, no white canvas, readable logo, 390px layout without overflow, keyboard details disclosure, and grouped requirements without generic repeated text.
• Added regression coverage for hidden identifiers and requirement extraction that retains specific constraints while removing boilerplate/cycles.
• Reviewed original custom-device-db-web support/requirement UI for visual patterns. No Strapi, backend/data, or docs source changes.
• Deployed preview react-olh6xwmp7.seam.vc (head 9d89911) verified in Chrome 149: actual docs theme menu, dark→light→dark, desktop/390px screenshots, exact requirement grouping, hidden model identifiers, keyboard disclosure, no duplicate footer; standalone auto theme follows system preference. Real Ecosystem data, no mocked API responses or disabled browser security. All checks green. Production 5.2.2 is deployed; repeated all browser checks on unchanged live August and KeyInCode guides with the actual docs theme menu, desktop/mobile layouts and standalone auto theme. No page errors. All release checks green after retrying one unrelated fake-server port collision.

Fixes DEVDB-464.