spec(ifc-fides): address review; reframe action-metadata for SEP-2061 closure

ifc-fides (review by @JoannaaKL):
- confidentiality is public/private only on the wire; drop the reader-list
  (logins aren't uniform across servers, are themselves access-restricted,
  and reader sets can be huge)
- add Reader-set resolution section: two private markers aren't equal, the
  confidentiality join is the intersection and isn't computable from opaque
  wire markers, so hosts resolve to concrete reader sets at decision time
- integrity join is total/wire-computable; confidentiality join is not
- emitter MUST classify per resource, not per repository (public repos serve
  non-world-readable sub-resources), making github-mcp-server a real proof point

action-metadata / docs:
- SEP-2061 closed 2026-06-13 in favour of this extension; this draft is now the
  canonical home. Updated action-metadata.mdx, README, sep-disposition,
  related-work, and intent-comment status accordingly.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
This commit is contained in:
Sam Morrow 2026-06-15 23:29:44 +02:00
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# Intent comment (draft, pre-post review)
# Intent comments (posted)
This is the comment we plan to post on
[SEP-1913](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/1913),
with an abbreviated pointer version for
[SEP-2061](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2061).
Kept here so it can be reviewed and stays in sync with
[sep-disposition.md](./sep-disposition.md).
Both comments below have been **posted**. Kept here as the source of record,
in sync with [sep-disposition.md](./sep-disposition.md).
- **SEP-1913** umbrella comment — [posted 2026-06-10](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/1913#issuecomment-4675047154).
- **SEP-2061** coordination note — [posted 2026-06-10](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2061#issuecomment-4675049171);
@localden then **closed SEP-2061 on 2026-06-13** in favour of the
`action-metadata` extension.
---