Conflicts and how they were resolved:
- ui-agent-preset/AgentPresetSection.module.css: master replaced the icon-only
tooltip actions (`.iconButton`, `.iconDanger`, `.revealedPath`) with
`.cardHelp` + `.helpButton`, which deleted the one declaration this branch
edited. Took master's structure and re-applied the branch's change to the two
`.cardMain:focus-visible` rings, which master kept unchanged.
- ui-theme/README.md and README.zh.md: master documented the separately exported
`brand-font.css`; this branch documented `focus.css`. Kept both, with the
dynamic entry's sheet list at seven sheets including `focus.css`.
`README.i18n.yaml` re-recorded with `verify-translation-pairing --write`.