{"id": "c830", "title": "C830 — Write the restart checkpoint", "filename": "C830.md", "role": "Research action", "step": 830, "sha256": "e94dfee0cfe4f0920ec3050aa6fab58a5884ff837b28f6deed721d1268697e2b", "bytes": 1087, "origins": ["C480–C1634/Research_Cycles/C0732_C0831/journal.json#C830"], "download": "/sources/e94dfee0cfe4f0920ec3050aa6fab58a5884ff837b28f6deed721d1268697e2b.md", "format": "md", "derived": true, "tags": [], "excerpt": "What must the next continuation retain without repeating this cycle?", "content": "# C830 — Write the restart checkpoint\n\n## Question\n\nWhat must the next continuation retain without repeating this cycle?\n\n## Inputs\n\n```json\n{}\n```\n\n## Sources\n\n```json\n[\n  \"C731 predecessor; C732–829\"\n]\n```\n\n## Opened utc\n\n2026-09-28T02:20:32.073379+00:00\n\n## Results\n\n```json\n{\n  \"restart_checkpoint\": {\n    \"path\": \"deliverables/490d_Chronological_Families_Checkpoint_After_C831.md\",\n    \"sha256\": \"b1b1d3312abd1a25cc155dccacbc0ed241b18396d68d3b79c46d69fdb63b8943\",\n    \"bytes\": 5620\n  },\n  \"next_unused_step\": 832\n}\n```\n\n## Finding\n\nThe continuation state now preserves the full explanatory model, exact new fields, source tensions, and scope controls. It is ready for the closing100-step seal.\n\n## Reassessment\n\nSeal C732–C831, run final verification, and save the final artifacts.\n\n## Checks\n\n```json\n{\n  \"next832\": true,\n  \"primary_pin_present\": true\n}\n```\n\n## Closed utc\n\n2026-09-28T02:20:32.073741+00:00\n\n## Record provenance\n\nExact record hash: `ac45f2e4c03482fa000c6321c3e56741dc94cc17b37cd2a280d48a626ffc7d70`\n\nSource journal: `Research_Cycles/C0732_C0831/journal.json`", "journalDownload": "/sources/8ea2b882289fbcea5cf11177923617f0c1d1ad7e6eaa3bffb174c6f89699d97d.json", "evidenceLinks": [{"id": "d-b1b1d3312abd1a25", "title": "deliverables/490d_Chronological_Families_Checkpoint_After_C831.md"}]}