Saves, restores session state including task progress, file changes, delegation history. Use when saving progress, resuming interrupted work, picking up where you left off, or checkpointing current work.
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81%
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| Trigger | Action |
|---|---|
| Before first delegation | After decomposition, before agents start |
| After each phase | When a parallel batch completes |
| Before risky work | DB migrations, large refactors, security changes |
| Session end | Any session with incomplete work |
| Context running low | Checkpoint immediately |
Phase boundaries that warrant a checkpoint: see decomposition.
.opencastle/SESSION-CHECKPOINT.md from the canonical CHECKPOINT-TEMPLATE.md.cat .opencastle/SESSION-CHECKPOINT.md; confirm listed files exist..opencastle/SESSION-CHECKPOINT.mdgit status, git branch — confirm you are on correct branchIf checkpoint missing or corrupt: Rebuild from git log --oneline -20, tracker state.
When all issues Done: archive to tracker; delete .opencastle/SESSION-CHECKPOINT.md.
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