[MCP] move_task: parent rejects a task URL or #id that taskId accepts (400 names the wrong parameter)

In Quire MCP, move_task accepts a task URL for taskId, but the same kind of URL (or a #id) passed as parent fails with a 400 error that names a different parameter.

Steps to reproduce

1. Take two tasks A and B in the same project.
2. Call move_task with taskId: https://quire.io/w/<project>/<A> and parent: https://quire.io/w/<project>/<B> (with or without position: after).
3. Repeat with parent: "#<B>".

Expected: task A is moved under (or next to) task B, the same way taskId resolves the URL. Actual: 400: Task not found for the 'task' query parameter. Make sure it is a valid OID. Passing B's OID as parent works.

Notes

• Across our AI agent sessions from 17 to 30 Oct 2026 this failed 29 times (28 with a URL parent, 1 with #id), while 74 calls with an OID parent succeeded.
• The error mentions task, but the tool parameter is parent, so agents keep retrying the URL form instead of resolving the OID.
• bulk_move_tasks already accepts #<id> for its task anchor (verified with dryRun today), so single and bulk moves behave differently.

Request: let parent accept the same forms as taskId (OID and task URL, ideally also #id like bulk_move_tasks), or at least name parent in the error and say that a URL is not accepted there.