fix(claude-do): fix(worker): Interaktive Session auf einem Nicht-Repo-Workin

Eine interaktive ("Quick") Session soll auf Pfaden, die kein Git-Repo sind, keinen Worktree erzwingen, sondern direkt im ausgewählten Ordner starten. Der User hat entschieden: BEIDE Einstiegspunkte prüfen — den task-gebundenen Pfad fixen, den Ad-hoc-Pfad verifizieren.

## Pfad 1 (der eigentliche Fix) — task-gebundene Session

- Einstieg: Kontextmenü der Task-Zeile "Open interactive session" — src/

ClaudeDo-Task: 15e126d564874973be2a5bbe7d796646

src/ClaudeDo.Worker/Hub/WorkerHub.cs

@@ -838,10 +838,11 @@ public sealed class WorkerHub : Microsoft.AspNetCore.SignalR.Hub
     }
 
     // Builds the launch spec an embedded ConPTY terminal (UI process) needs to open an
-    // interactive Claude session in a task's worktree -- same worktree prep as an
-    // autonomous run (session-skills seeding, run env vars), --resume if the task has a
-    // persisted session or a fresh-start spec otherwise. Guards: no running/queued task,
-    // and (once a worktree exists) it must be live on disk.
+    // interactive Claude session for a task -- same worktree prep as an autonomous run when
+    // the task's list points at a git repo (session-skills seeding, run env vars), or a
+    // worktree-less spec opening directly in the list's WorkingDir when it isn't a repo.
+    // --resume if the task has a persisted session or a fresh-start spec otherwise. Guards:
+    // no running/queued task, and (once a worktree exists) it must be live on disk.
     public Task<LaunchSpec> GetInteractiveLaunchSpec(string taskId) => HubGuard(() =>
     {
         if (_interactiveLaunchSpec is null)