The usage progress bar only matched claude-sonnet-4-5 and
claude-opus-4-5-thinking. After upgrading to 4.6, the backend returns
claude-sonnet-4-6/claude-opus-4-6-thinking which didn't match,
causing the Claude usage bar to not display.
- Add claude-sonnet-4-6 and claude-opus-4-6-thinking to the match list
- Rename label from "C4.5" to "Claude" for future-proofing