/api/v1/here names the changelog among what an anonymous visitor can do #8357

Once an agent can read the changelog, here says so.

Done:

• [ ] src/actions/here.ts adds { do: "see what went live", http: "GET /api/v1/changelog", mcp: <the kind #8325 adds>, account: false }.
• [ ] test/here-manifest.test.ts asserts it.

Files: src/actions/here.ts, test/here-manifest.test.ts. Risk: none.