Two real gaps: the Skills Hub had no way to create a new skill (with
a SKILL.md) at all - the only 'Install' flow was the Plugin registry,
which just records a name in a JSON file, not an actual skill folder.
And the Context Files panel was read-only, just listing filenames
with no way to view, edit, add, or delete their contents.
Adds POST /api/skills (create, with SKILL.md content), PUT
/api/skills/{name} (edit SKILL.md), and GET/PUT/DELETE
/api/skills/{name}/context/{filename} for context files - all
validated through the same regex-allowlist + resolved-path
containment pattern already used for kanban tasks. Dashboard gets a
'+ New Skill' button, an editable SKILL.md view, and per-file
edit/delete plus 'Add File' in the Context Files panel.
d36785c7ee