Adds an 'Open ConPTY session' entry that fetches a task's launch spec and hosts
an embedded ConPTY terminal as a Mission Control pane, coexisting with the
streamed-log monitor panes (streaming stack untouched). Introduces IMissionControlPane
+ ConPtyPaneViewModel, a non-destructive Panes mirror (Monitors prefix + ConPtySessions
suffix) so unrelated monitor churn never tears down a live terminal, and a grid<->tabs
layout toggle. Launch failures surface via the footer error strip.
TaskMonitorViewModel gains IsInteractiveLive + ComposerDraft + SubmitComposer
(optimistic LogKind.User echo, then SendInteractiveMessageAsync) + StopInteractive,
driven by the InteractiveSessionStarted/Ended events. Since DetailsIslandViewModel
embeds this monitor, both task detail and Mission Control get the composer. Mission
Control auto-creates a monitor on InteractiveSessionStarted. Adds LogKind.User.
TaskMonitorViewModel surfaces a pending AskUser question (TaskQuestionAsked /
TaskQuestionResolved events) with an AnswerDraft + SubmitAnswerCommand that calls
the new IWorkerClient.AnswerTaskQuestionAsync; MonitorPaneView shows an accent
question banner with an input box above the terminal. Pending question is cleared
on answer/resolve/finish and re-hydrated on attach via GetPendingQuestionAsync.
en/de localization for missionControl.question.*; test fakes updated.
mika kuns