Smoke-test Sprites

Use MCP only. Do not install the Sprites CLI, call the REST API, or register a second MCP server.

1. Confirm that Sprites tools are available; otherwise report the loading issue and stop.
2. Call list_sprites. An empty result is valid.
3. Create a short-lived name such as mcp-smoke-<shortid> when no token prefix is known. If creation reports a different required prefix, retry once with that prefix.
4. Call exec with a harmless command such as uname -a or echo smoke-ok.
5. Destroy the temporary sprite only when the user already requested teardown; otherwise ask before cleanup because destruction is irreversible.
6. Report:

Sprites smoke test
- list: OK (N sprites) | empty (OK)
- create: NAME — STATUS — URL
- exec: exit CODE — brief output
- destroy: destroyed | skipped (kept) | not requested
- prefix learned: PREFIX | full access/none | unknown

Do not install packages, start services, or change network policy during this test.