feat(worker,data): persist interactive session id so a closed/aborted ConPTY session can be resumed

Generates the claude session id up front (--session-id <guid>) for a fresh interactive task
session and persists it to TaskEntity.InteractiveSessionId before launch, so an abort at any
point still leaves a resumable id. BuildForTaskAsync now resumes this task's own last
interactive session in preference to the latest autonomous run's session, but never across a
freshly (re)created worktree.

src/ClaudeDo.Data/Configuration/TaskEntityConfiguration.cs

@@ -95,6 +95,7 @@ public class TaskEntityConfiguration : IEntityTypeConfiguration<TaskEntity>
         builder.Property(t => t.SessionSkills).HasColumnName("session_skills");
         builder.Property(t => t.HandlerBaseCommit).HasColumnName("handler_base_commit");
         builder.Property(t => t.HandlerHeadCommit).HasColumnName("handler_head_commit");
+        builder.Property(t => t.InteractiveSessionId).HasColumnName("interactive_session_id");
 
         builder.Property(t => t.ParentTaskId).HasColumnName("parent_task_id");
         builder.Property(t => t.PlanningSessionId).HasColumnName("planning_session_id");