fix(ui): preserve card radius in MUI sx

docs/material-you-maintenance.md

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+# Material You fork maintenance
+
+This branch keeps Suwayomi behavior upstream-compatible and confines the visual fork to theme services, navigation components, manga presentation, and reader chrome.
+
+## Update from upstream
+
+```sh
+git fetch origin
+git switch codex/material-you
+git rebase origin/master
+pnpm test:material-you
+pnpm format:check
+pnpm lint
+pnpm tsc
+pnpm build
+```
+
+Resolve upstream conflicts by preserving server requests, GraphQL types, routing, reader state, and settings behavior. Material You additions should remain presentation-only.
+
+## Build
+
+Use Node 24 or newer and pnpm 11.1.2 or newer:
+
+```sh
+pnpm setup
+pnpm build
+```
+
+The deployable static application is written to `build/`.
+
+## NAS deployment
+
+Suwayomi uses the custom WebUI directory:
+
+```text
+/vol4/1000/docker-software/manga-stack/suwayomi/webUI
+```
+
+Before each release, copy `server.conf` and the complete live `webUI/` directory into a timestamped directory below:
+
+```text
+/vol4/1000/docker-software/.integration-backups/
+```
+
+Upload `build/` to a sibling staging directory, compare file counts and hashes, then rename the staging directory to `webUI` in one operation. Keep `webUI.flavor=CUSTOM` and the automatic WebUI update interval at `0`. Recreate only the `suwayomi` service and force-refresh browser/PWA caches.
+
+## Rollback
+
+Stop or recreate only Suwayomi, move the failed live `webUI/` aside, restore the backed-up `webUI/` and `server.conf`, then recreate Suwayomi. Verify HTTP 200, the GraphQL `{ __typename }` query, hashed assets, and container logs before closing the rollback.