ah-x5d [bug] ToolAskUser (mid-run channel) posts its question with no durable intent marker Lined Up

Found while fixing ah-1cx.10, and deliberately left alone there because its semantics differ.

ToolAskUser (internal/reconcile/tools.go) posts the question and moves the card with NO record flip and NO durable intent record. If MoveToBucket fails after the comment lands, the card stays in In Progress with a live sentinel and the agent polls GET /api/tool/answer forever — until its own --deadline (default 5m) expires, having burnt the wall clock for nothing.

The generalized park mechanism from ah-1cx.10 (parkKind + parkMarker + parkParent) now exists and is the obvious basis, but the mid-run park is NOT the same shape: there is no record flip to re-attempt (the run is still live) and no finalize to hang a re-park arm off, so it needs its own plan — probably a marker consulted by the reconcile tick while the run is in flight, rather than by finalize.

A failed MoveToBucket after the question comment leaves a durable record, and a later tick either completes the move or tells the agent the question could not be parked, instead of leaving it polling to its deadline.