Closes#18718. Exposes the existing `workspace_kind` + `workspace_path`
fields (already accepted by POST /api/plugins/kanban/tasks) in the
dashboard's per-column inline-create form so users can create tasks
targeting a git worktree or an explicit directory without dropping
back to the CLI.
- Add a workspace-kind Select (scratch / worktree / dir) to
InlineCreate in plugins/kanban/dashboard/dist/index.js.
- Conditionally render a workspace_path Input next to the select when
kind != scratch; placeholder tells the user whether the path is
required (dir) or optional (worktree — derived from assignee when
blank).
- Submit wires `workspace_kind` / `workspace_path` into the POST body
only when they're non-default, keeping the request shape small and
interoperable with older dispatcher versions.
E2E verified in a dashboard pointed at the worktree: selecting dir +
typing /tmp/test-18718 produces a POST body with
{workspace_kind: 'dir', workspace_path: '/tmp/test-18718'} and the
task lands in sqlite with those fields set. 42/42 kanban dashboard
plugin tests pass.