False "Update available! Run: mise upgrade claude" when mise is already on latest

Installed Claude Code with mise (claude = "latest" in my global config, backend is aqua:anthropics/claude-code).

The bottom right keeps showing:

Update available! Run: mise upgrade claude

But running mise upgrade claude does nothing because I'm already on the newest version mise knows about:

$ claude --version
2.1.273 (Claude Code)

$ MISE_FETCH_REMOTE_VERSIONS_CACHE=0 mise latest claude
2.1.273

$ npm view @anthropic-ai/claude-code dist-tags.latest
2.1.274

So the check compares against the npm latest tag, while mise pulls from GitHub releases which show up a bit later. Since there's a new version almost every day, the notice is basically always there and the suggested command never fixes it.

Same kind of problem was reported for apt (#87197), Homebrew (#49590) and winget (#46550), but not for mise as far as I can tell.

Would be nice if the notice only showed up when the package manager actually has the newer version, or at least didn't suggest a command that can't work yet. For now I set DISABLE_AUTOUPDATER=1 to get rid of it.

Env: Arch Linux, Claude Code 2.1.273, mise 2026.9.1