Let a bot's reply link to the files it saved

Both runners now pass the files a run wrote back into the reply, and a
computer file ref renders as a chip like a bot file ref does, so a
reply can point at what it produced instead of naming a path.

src/dict/bot-queue-dict.ts

@@ -79,6 +79,7 @@ export const JobStepToolLabels: Record<string, string> = {
     sandbox_write_file: "Writing a file",
     sandbox_file_operations: "Working with files",
     search_computers: "Searching the computers",
+    import_file: "Copying a file from the computer",
     ask_user_to_take_over: "Asking you to take over",
     start_task: "Starting a task",
     delegate_task: "Handing work to the crew",