feat: add logs to response for tool run

[carenthomas]

Please describe the purpose of this pull request.
Expose the stdout and stderr in FunctionReturn object so that it can be rendered in the UI

How to test
poetry run pytest -s -vv tests/test_server.py::test_tool_run

Have you tested this PR?

1
id='null' date=datetime.datetime(2024, 12, 10, 0, 15, 10, 578104, tzinfo=datetime.timezone.utc) message_type='function_return' function_return='Ingested message Hello, world!' status='success' function_call_id='null' stdout=[''] stderr=['']
2
id='null' date=datetime.datetime(2024, 12, 10, 0, 15, 10, 579356, tzinfo=datetime.timezone.utc) message_type='function_return' function_return='Ingested message Well well well' status='success' function_call_id='null' stdout=[''] stderr=['']
Letta.letta.services.tool_execution_sandbox - ERROR - Executing tool ingest has an unexpected error: ingest() missing 1 required positional argument: 'message'
Letta.letta.services.tool_execution_sandbox - ERROR - Logging out tool ingest auto-generated code for debugging: 

from typing import *
import pickle
import sys
import base64
agent_state = None


def ingest(message: str):
    """
    Ingest a message into the system.

    Args:
        message (str): The message to ingest into the system.

    Returns:
        str: The result of ingesting the message.
    """
    return f"Ingested message {message}"


result_ZQqiequkcFwRwwGQMqkt = {"results": ingest(), "agent_state": agent_state}
result_ZQqiequkcFwRwwGQMqkt = base64.b64encode(pickle.dumps(result_ZQqiequkcFwRwwGQMqkt)).decode('utf-8')
result_ZQqiequkcFwRwwGQMqkt

3
id='null' date=datetime.datetime(2024, 12, 10, 0, 15, 10, 580553, tzinfo=datetime.timezone.utc) message_type='function_return' function_return="Error executing tool ingest: ingest() missing 1 required positional argument: 'message'" status='error' function_call_id='null' stdout=[''] stderr=['Traceback (most recent call last):\n  File "https://accionvegana.org/accio/0ITbvNmLiVHa0l2Z6MHc0/Users/caren/letta/letta/server/server.py", line 1869, in run_tool_from_source\n    sandbox_run_result = ToolExecutionSandbox(tool.name, tool_args_dict, user_id, tool_object=tool).run(agent_state=agent_state)\n                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File "https://accionvegana.org/accio/0ITbvNmLiVHa0l2Z6MHc0/Users/caren/letta/letta/services/tool_execution_sandbox.py", line 79, in run\n    result = self.run_local_dir_sandbox(agent_state=agent_state)\n             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File "https://accionvegana.org/accio/0ITbvNmLiVHa0l2Z6MHc0/Users/caren/letta/letta/services/tool_execution_sandbox.py", line 139, in run_local_dir_sandbox\n    raise e\n  File "https://accionvegana.org/accio/0ITbvNmLiVHa0l2Z6MHc0/Users/caren/letta/letta/services/tool_execution_sandbox.py", line 135, in run_local_dir_sandbox\n    return self.run_local_dir_sandbox_runpy(sbx_config, env_vars, temp_file_path, old_stdout, old_stderr)\n           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File "https://accionvegana.org/accio/0ITbvNmLiVHa0l2Z6MHc0/Users/caren/letta/letta/services/tool_execution_sandbox.py", line 228, in run_local_dir_sandbox_runpy\n    result = runpy.run_path(temp_file_path, init_globals=env_vars)\n             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File "<frozen runpy>", line 286, in run_path\n  File "<frozen runpy>", line 98, in _run_module_code\n  File "<frozen runpy>", line 88, in _run_code\n  File "https://accionvegana.org/accio/0ITbvNmLiVHa0l2Z6MHc0/Users/caren/letta/letta/services/tool_sandbox_env/tmpw8z73e2g.py", line 21, in <module>\nTypeError: ingest() missing 1 required positional argument: \'message\'\n']
4
id='null' date=datetime.datetime(2024, 12, 10, 0, 15, 10, 582157, tzinfo=datetime.timezone.utc) message_type='function_return' function_return='Ingested message Well well well' status='success' function_call_id='null' stdout=["I'm a distractor\n"] stderr=['']
5
id='null' date=datetime.datetime(2024, 12, 10, 0, 15, 10, 583233, tzinfo=datetime.timezone.utc) message_type='function_return' function_return='Ingested message Well well well' status='success' function_call_id='null' stdout=["I'm a distractor\n"] stderr=['']
6
id='null' date=datetime.datetime(2024, 12, 10, 0, 15, 10, 584279, tzinfo=datetime.timezone.utc) message_type='function_return' function_return='None' status='success' function_call_id='null' stdout=["I'm a distractor\n"] stderr=['']
PASSED

============================================== warnings summary ===============================================
../Library/Caches/pypoetry/virtualenvs/letta-DRP4JjWO-py3.12/lib/python3.12/site-packages/pydantic/fields.py:826
../Library/Caches/pypoetry/virtualenvs/letta-DRP4JjWO-py3.12/lib/python3.12/site-packages/pydantic/fields.py:826
  /Users/caren/Library/Caches/pypoetry/virtualenvs/letta-DRP4JjWO-py3.12/lib/python3.12/site-packages/pydantic/fields.py:826: PydanticDeprecatedSince20: Using extra keyword arguments on `Field` is deprecated and will be removed. Use `json_schema_extra` instead. (Extra keys: 'env'). Deprecated in Pydantic V2.0 to be removed in V3.0. See Pydantic V2 Migration Guide at https://errors.pydantic.dev/2.9/migration/
    warn(

../Library/Caches/pypoetry/virtualenvs/letta-DRP4JjWO-py3.12/lib/python3.12/site-packages/pydantic/_internal/_config.py:291
../Library/Caches/pypoetry/virtualenvs/letta-DRP4JjWO-py3.12/lib/python3.12/site-packages/pydantic/_internal/_config.py:291
../Library/Caches/pypoetry/virtualenvs/letta-DRP4JjWO-py3.12/lib/python3.12/site-packages/pydantic/_internal/_config.py:291
../Library/Caches/pypoetry/virtualenvs/letta-DRP4JjWO-py3.12/lib/python3.12/site-packages/pydantic/_internal/_config.py:291
../Library/Caches/pypoetry/virtualenvs/letta-DRP4JjWO-py3.12/lib/python3.12/site-packages/pydantic/_internal/_config.py:291
../Library/Caches/pypoetry/virtualenvs/letta-DRP4JjWO-py3.12/lib/python3.12/site-packages/pydantic/_internal/_config.py:291
  /Users/caren/Library/Caches/pypoetry/virtualenvs/letta-DRP4JjWO-py3.12/lib/python3.12/site-packages/pydantic/_internal/_config.py:291: PydanticDeprecatedSince20: Support for class-based `config` is deprecated, use ConfigDict instead. Deprecated in Pydantic V2.0 to be removed in V3.0. See Pydantic V2 Migration Guide at https://errors.pydantic.dev/2.9/migration/
    warnings.warn(DEPRECATION_MESSAGE, DeprecationWarning)

letta/schemas/llm_config.py:51
  /Users/caren/letta/letta/schemas/llm_config.py:51: PydanticDeprecatedSince20: Pydantic V1 style `@root_validator` validators are deprecated. You should migrate to Pydantic V2 style `@model_validator` validators, see the migration guide for more details. Deprecated in Pydantic V2.0 to be removed in V3.0. See Pydantic V2 Migration Guide at https://errors.pydantic.dev/2.9/migration/
    @root_validator(pre=True)

../Library/Caches/pypoetry/virtualenvs/letta-DRP4JjWO-py3.12/lib/python3.12/site-packages/pydantic/_internal/_generate_schema.py:312
../Library/Caches/pypoetry/virtualenvs/letta-DRP4JjWO-py3.12/lib/python3.12/site-packages/pydantic/_internal/_generate_schema.py:312
  /Users/caren/Library/Caches/pypoetry/virtualenvs/letta-DRP4JjWO-py3.12/lib/python3.12/site-packages/pydantic/_internal/_generate_schema.py:312: PydanticDeprecatedSince20: `json_encoders` is deprecated. See https://docs.pydantic.dev/2.9/concepts/serialization/#custom-serializers for alternatives. Deprecated in Pydantic V2.0 to be removed in V3.0. See Pydantic V2 Migration Guide at https://errors.pydantic.dev/2.9/migration/
    warnings.warn(

<frozen importlib._bootstrap>:488
  <frozen importlib._bootstrap>:488: DeprecationWarning: Type google._upb._message.MessageMapContainer uses PyType_Spec with a metaclass that has custom tp_new. This is deprecated and will no longer be allowed in Python 3.14.

<frozen importlib._bootstrap>:488
  <frozen importlib._bootstrap>:488: DeprecationWarning: Type google._upb._message.ScalarMapContainer uses PyType_Spec with a metaclass that has custom tp_new. This is deprecated and will no longer be allowed in Python 3.14.

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
======================================= 1 passed, 13 warnings in 0.61s ========================================

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[sarahwooders]

This looks good! I'm pretty sure this will pass in main (Ollama is unrelated and just fails sometimes)