hyperhive#2922: the inline-answer slot (pendingAskBinds/reconcileAskBinds/
buildAnswerForm) depended on a since-removed /api/loose-ends endpoint
and had been silently non-functional the whole time — nothing ever
reassigned lastLooseEnds, so the reconciler always no-op'd.
Per mara's call on the issue (ask/answer is deprecated per #2850, only
the main dashboard UI needs to work, remove the broken per-agent inline
view): ripped out the dead JS (binding + form + CSS) rather than
restoring the endpoint. An ask tool call now renders like any other
tool call, no inline answer affordance; the operator answers via the
dashboard's own question surfacing.
Also fixed adjacent doc staleness this same removal made newly
contradictory (docs/web-ui/agent.md, docs/terminal-rendering.md):
the doc already described the loose-ends/bash-tasks flyouts and the
ask-binding as recently dead, but the endpoint reference table and a
header-pills bullet list still described them as live.