gilesb 45826138ca Store provenance on IPFS instead of local files ...

- Add add_json() to ipfs_client for storing JSON data
- Update render_effect task to store provenance on IPFS
- Update execute_dag task to store DAG provenance on IPFS
- Add provenance_cid field to RunStatus model
- Extract provenance_cid from task results

Provenance is now immutable and content-addressed, enabling:
- Cross-L2 verification
- Bitcoin timestamping for dispute resolution
- Complete audit trail on IPFS

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

2026-01-09 02:40:38 +00:00

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