feat: added file handling for daytona sandboxes

- Added _TimeoutAwareSandbox class to handle per-command timeouts in DaytonaSandbox.
- Updated _find_or_create function to manage sandbox states and restart stopped/archived sandboxes.
- Enhanced get_or_create_sandbox to return the new sandbox class.
- Introduced file download functionality in the frontend, allowing users to download generated files from the sandbox.
- Updated system prompt to include guidelines for sharing generated files.

surfsense_backend/app/tasks/chat/stream_new_chat.py

@@ -862,11 +862,13 @@ async def _stream_agent_events(
                     exit_code = int(m.group(1))
                     om = re.search(r"\nOutput:\n([\s\S]*)", raw_text)
                     output_text = om.group(1) if om else ""
+                thread_id_str = config.get("configurable", {}).get("thread_id", "")
                 yield streaming_service.format_tool_output_available(
                     tool_call_id,
                     {
                         "exit_code": exit_code,
                         "output": output_text,
+                        "thread_id": thread_id_str,
                     },
                 )
             else: