refactor(interactive): remove streaming interactive stack (superseded by ConPTY)

The embedded ConPTY terminal replaced the in-app streaming interactive session, so
delete the dead stack: StreamingClaudeSession, InteractiveSessionService,
ProcessClaudeStreamTransport, IClaudeStreamTransport, ILiveSession, LiveSessionRegistry,
IdleSessionReaper (+ WorkerConfig.InteractiveIdleTimeoutMinutes), the WorkerHub
interactive methods + HubBroadcaster events, IWorkerClient interactive members, the
TaskMonitorViewModel composer + SessionTerminalView composer markup, and the old
'Run interactively' entry. AskUser/PendingQuestionRegistry, the autonomous path,
planning, ResumeTaskInTerminal, and all ConPTY code are kept. Localization pruned.

src/ClaudeDo.Ui/Views/Islands/TaskRowView.axaml

@@ -49,8 +49,6 @@
               <MenuItem Header="{loc:Tr tasks.ctxMarkCancelled}" Tag="Cancelled" Click="OnSetStatusClick"/>
             </MenuItem>
             <Separator/>
-            <MenuItem Header="{loc:Tr tasks.ctxRunInteractively}"
-                      Click="OnRunInteractivelyClick"/>
             <MenuItem Header="{loc:Tr tasks.ctxOpenConPtySession}"
                       Click="OnOpenConPtySessionClick"/>
             <MenuItem Header="{loc:Tr tasks.ctxPickUpInTerminal}"