refactor(interactive): remove streaming interactive stack (superseded by ConPTY)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.Worker/Runner/Interfaces/IClaudeStreamTransport.cs

@@ -1,11 +0,0 @@
-namespace ClaudeDo.Worker.Runner.Interfaces;
-
-public interface IClaudeStreamTransport : IAsyncDisposable
-{
-    Task StartAsync(IReadOnlyList<string> args, string workingDirectory, CancellationToken ct);
-    Task WriteLineAsync(string jsonLine, CancellationToken ct);
-    event Func<string, Task>? LineReceived;
-    event Func<string, Task>? StderrReceived;
-    void Kill();
-    Task WaitForExitAsync();
-}

src/ClaudeDo.Worker/Runner/Interfaces/ILiveSession.cs

@@ -1,10 +0,0 @@
-namespace ClaudeDo.Worker.Runner.Interfaces;
-
-public interface ILiveSession : IAsyncDisposable
-{
-    bool IsTurnInFlight { get; }
-    Task SendUserMessageAsync(string text, CancellationToken ct);
-    Task RemoveQueuedAsync(string text, CancellationToken ct);
-    Task InterruptAsync(CancellationToken ct);
-    Task StopAsync();
-}