* Add specification/stable/skills.mdx for SEP-2640
Spec-format rendering of the Skills extension (io.modelcontextprotocol/skills),
following the layout used by ext-tasks' specification/draft/tasks.md.
Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Sure6Sknngow87Q6TkzTfL
* skills.mdx: list normative requirements as bullets
Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Sure6Sknngow87Q6TkzTfL
* skills.mdx: plain punctuation, drop em-dashes and rhetorical phrasing
Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Sure6Sknngow87Q6TkzTfL
* skills.mdx: remove Implementation Considerations section
Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Sure6Sknngow87Q6TkzTfL
---------
Co-authored-by: Claude <noreply@anthropic.com>
