mcptoon v0.7.14

What's new

• serve now publishes three tools of its own. mcptoon_manifest,
  mcptoon_servers and mcptoon_health answer from state the bridge already holds:
  no upstream servers, no API keys, no subprocesses, all three declared readOnlyHint.
  Until now tools/list carried only what configured servers exposed, so a gateway
  started with an empty config — every first run, and every registry that introspects
  us — looked like a tool-less server. An upstream tool that claims one of these names
  still wins.

Verified after release: 14 tools captured by the Glama directory listing within minutes
(previously: none, across three releases).

Footprint (re-measured, not remembered)

Full history: CHANGELOG.md