Restore agent tool panes and require explicit session resume

Persist direct-provider tool calls, results, display details, and turn identities so saved conversations rebuild individual panes. Keep restored runs dormant until explicitly resumed and bind queued shell commands to their actual execution blocks.

app/src/ai/blocklist/action_model/execute/shell_command.rs

@@ -277,8 +277,16 @@ impl ShellCommandExecutor {
                     move |result, ctx| {
                         // Remove the senders from the maps.
                         if let Some(handle) = handle.upgrade(ctx) {
-                            handle.update(ctx, |me, _| {
+                            handle.update(ctx, |me, ctx| {
                                 me.prune_closed_senders(&block_selector);
+                                if matches!(
+                                    result,
+                                    ActionResult::BlockNotFound | ActionResult::Cancelled
+                                ) {
+                                    ctx.emit(ShellCommandExecutorEvent::CancelExecution {
+                                        action_id: action_id.clone(),
+                                    });
+                                }
                             });
                         }
 
@@ -659,11 +667,9 @@ impl ShellCommandExecutor {
         };
         // Cancelling the wait future alone would report cancellation while the process keeps
         // running. Terminate the exact requested command before resolving the action as cancelled.
-        if requested_block_is_running {
-            ctx.emit(ShellCommandExecutorEvent::CancelExecution {
-                action_id: id.clone(),
-            });
-        }
+        ctx.emit(ShellCommandExecutorEvent::CancelExecution {
+            action_id: id.clone(),
+        });
         if !requested_block_is_running {
             self.block_finished_senders.remove(&selector);
             self.force_refresh_senders.remove(&selector);