chore: remove unused data_dir / DATA_DIR (Storage Bucket dependency)

fix(docker): remove HEALTHCHECK to let HF Spaces use its own mechanism

refactor(docker): remove in-container Neo4j, connect to external GCP Neo4j

fix(neo4j): move data dirs from /data (S3 FUSE) to /tmp (local)

debug(spaces): HEALTHCHECK + neo4j logs to stdout for HF health check diagnosis

fix(api): ensure health checks always return 200 for HF Spaces

refactor(extractor): migrate to Responses API (client.responses.create)

fix(extractor): max_tokens -> max_completion_tokens for gpt-5-mini, bump openai>=1.84.0

fix(deps): upgrade openai>=1.57.0 to fix httpx proxies incompatibility

refactor(extractor): remove heuristic fallback, require OpenAI API key

feat(ui): add drag-and-drop file upload to UploadPanel

feat(sample): switch Load Sample to Japanese supply chain text

feat(nlp): add Japanese language support

debug(api): pipe uvicorn stdout/stderr to container logs

fix(neo4j): use /data for persistent storage, chown fallback to chmod 777

refactor(docker): switch to python:3.11-slim base, install neo4j via APT

fix(api): run Neo4j init as background task so FastAPI responds immediately

fix(neo4j): bypass entrypoint, write neo4j.conf directly, start binary via supervisord

fix(neo4j): chown /data to neo4j in start.sh before supervisord starts neo4j

fix(docker): add git for HF Spaces build pipeline

fix(neo4j): redirect data dirs to /tmp to avoid HF Spaces /data permission issue

fix(supervisord): use /tmp for pidfile/logs, remove user directives for HF Spaces compat

fix(frontend): declare react-cytoscapejs module, add explicit any types

fix(deps): use networkx 3.2.1, last version supporting Python 3.9

fix(docker): upgrade pip before installing requirements

fix(deps): downgrade networkx to 3.3 for Python 3.9 compatibility

fix(docker): remove --break-system-packages unsupported by pip in base image

feat: implement CC-RAG prototype with Neo4j, FastAPI, React

initial commit